Rachel Smith
Bioethics Thesis
28 April 2003
Human Embryonic Stem Cell Ethics
Recent advances in human stem cell research have generated boundless enthusiasm
on the part of researchers as well as igniting a debate over the morality
of the research. The ethical discussion concerning stem cell research is
rarely simple. Like most moral quandaries, it is fraught with many layers
of complexity, encompassing divergent ethics, faiths, and cultural backgrounds.
Dr. Chris MacDonald, of the Dalhousie Bioethics Department writes, “Ethics,
as a discipline, is about careful consideration of issues that matter to
human well-being and to human freedom. The debate over stem cell research
sits squarely within this domain. In practical terms, ethics requires arriving
at courses of action that seem reasonable – if not always ideal –
to one’s neighbors” (1).
All agree that research on human stem cells has amazing potential. The moral
conflict arises because in the creation of embryonic stem cell lines, or
colonies, potentially viable embryos are destroyed. There are four sources
of fetal stem cells, and all of them have complex ethical issues surrounding
their use in research.
In examining the controversy surrounding the practice of research on fetal
stem cells, it is important to note that there are four very different ways
of obtaining stem cells. The first method involves obtaining discarded embryos
from fertility treatments at In Vitro Fertilization (IVF) Clinics; the second
involves researchers combining donated eggs and sperm in the laboratory
to create embryos on which to do research; the third are embryos created
through SCNT, or somatic cell nuclear transfer, a device that allows fertilization
of an egg without the use of sperm; and the fourth method entails deriving
tissue for research from aborted fetuses to get embryonic germ cells. Each
of these four methods is morally problematic in its own way.
(1) The moral argument regarding the use of embryonic stem cells obtained
from surplus embryos created during fertilization therapy is possibly the
most simplistic. Many who otherwise do not condone fetal stem cell research
support the scientific use of discarded IVF embryos, believing that to use
them in research respects the dignity of the embryo more than humanely disposing
of it does. Even some of the sources that President Bush drew on to make
an educated choice about the future for federal funding of human embryonic
stem cell research support the work. The American Association for the Advancement
of Science, whose paper “Stem Cell Research and Applications: Monitoring
the Frontiers of Biomedical Research” was instrumental to President
Bush’s decision, believes that fetal stem cell research on IVF embryos
is appropriate. They write, “The most ethical source of human primordial
stem cells is embryos produced for the process of in vitro fertilization
whose progenitors have decided not to implant them” (8).
Surplus embryos exist because multiple embryos are created through the process
of aiding a woman or couple in conceiving a child. An ova donor can provide
up to 30 eggs in a single cycle. While the procedure has been significantly
refined in the thirty years since it was first successfully performed, completely
successful fertilizations still rare enough statistically that all of the
eggs that have matured are harvested. In a majority of the cases, up to
50% of the resulting embryos are not viable. It often takes several attempts
at implantation before an embryo or embryos successfully embed in the endometrium,
making it important to try to fertilize all of the ova (Schmidt). Robert
Edwards, a scientist who was part of the first successful birth of an embryo
implanted through IVF, writes that “it is also clear now that the
chances of success, i.e. of establishing a clinical pregnancy, have not
improved greatly . . .the chance of a single embryo implanting [today] is
not much greater than 15%” (46). However, in most cases, between one
and twenty viable embryos are not implanted. Recently, some have chosen
to donate these embryos to science.
Louis Guenin, Professor of Ethics at Harvard Medical School believes that
because discarded IVF embryos have no chance to be actualized, “it
seems difficult to deny that relieving widespread suffering is morally better
than destroying embryos at no gain” (27). Guenin makes a case for
research on IVF embryos by arguing that doing research on them has the potential
to help the human race, while euthanizing them helps nothing. Because he
admits only two potential ends for the embryos, he is able to easily conclude
that doing research on IVF embryos is the morally superior treatment. But
this argument alone is not enough to determine the morality of research
on IVF embryos.
First, if it is to be concluded that the embryos otherwise have an intrinsic
right to develop into conscious and reasoning persons, consenting to the
research would be, by definition, immoral. An immoral act resulting in a
potential good cannot be considered moral (Knight). Second, the argument
cannot be based on the idea that doing research on surplus embryos is a
more dignified end because otherwise they would simply be euthanized. While
the concept of sacrificing a minority to benefit the greater human race
is widely utilized, it should be emphasized that all excess embryos are
not destroyed. Women or couples undergoing fertility treatments may pay
up to $20,000 to a young woman who agrees to donate eggs in addition to
the medical costs incurred for both the ova retrieval and the embryo implantation
procedures. The prohibitive cost deters many from looking into IVF as a
viable option, but another alternative exists. More and more people are
choosing to adopt embryos. Thus, arguing that research on IVF embryos is
moral because embryos have no other potential end is not an acceptable argument.
Some disagree vehemently with the use of discarded IVF embryos as part of
research. They argue that such embryos should be adopted just as orphaned
or abandoned children are adopted. Subsequently, they regard the embryos
as not only possessing all the genetic material that makes them human but
also deserving all of the rights fundamental to human persons. Dr. Pellegrino
avers, “I oppose any system of research that is based on destruction
of living human embryos. They are members of the human species from conception
and therefore have special moral status. To set a cutoff point of 14 days,
prior to which an embryo may be used for research, is totally arbitrary”
(1). Some argue that while they would not otherwise support human embryonic
research, because extra IVF embryos generally end up being euthanized, research
is a better end. Dr. Pellegrino disputes that argument, for “you can’t
do something that is intrinsically wrong even if good may come of it”
(1). His argument is sound so long as one accepts the premise that utilizing
human embryos for research is fundamentally wrong. Similarly, his assertion
that the fourteen-day restriction on research on embryos is totally arbitrary
is not totally accurate. The fourteen-day benchmark after which no research
can be conducted on embryos refers to the differentiation occurring within
the embryo. Fourteen days after fertilization, it is growing rapidly, and
on day 16, appearance of the primitive streak signals the beginning of gastrulation.
While the embryo changes and matures in very important ways during every
day post-fertilization, the occurrence of the primitive streak is considered
an important developmental event, and an appropriate time to halt embryonic
research (Warnock Committee).
Yet some of those most vehemently against fetal stem cell research argue
the use of embryos at any stage of development is tantamount to destroying
a human life. The Center for Bioethics and Human Dignity, in their essay
“On Human Embryos and Stem Cell Research: An Appeal for Legally and
Ethically Responsible Science and Public Policy” write “Human
embryos are not mere biological tissues or clusters of cells; they are the
tiniest of human beings” (4) and they quote the 1995 Ramsey Colloquium
statement on embryo research which reminds the reader that:
The [embryo] is human; it will not articulate itself into some other kind
of animal. Any being that is human is a human being. If it is objected that,
at five days or fifteen days, the embryo does not look like a human being,
it must be pointed out that this is precisely what a human being looks like—and
what each of us looked like—at five or fifteen days of development.
(qtd. in Center for Bioethics and Human Dignity 2)
Both sides of the debate argue that without legislation regarding IVF embryo
donation, unethical publicly owned companies would finance such experimentation.
Dr. Edmund Pellegrino, Director of the Center for Clinical Bioethics and
an opponent of human embryonic research, writes that so long as there are
no federal sanctions on the research, “There is a coalition of scientists
eager to do the research, and there are biotechnology companies eager to
profit from it” (1). Dr. Myron Genel, Chairman of the AMA’s
Council on Scientific Affairs, and an advocate of human embryonic research
writes, “Pluripotent stem-cell research is so promising that it will
inevitably take place in the private sector. Federal funding would ensure
scientifically rigorous research. More important, federal oversight would
provide assurances that the acquisition of discarded embryos takes place
with respect and donor consent” (1).
Though the argument for adoption of surplus embryos rather than research
is very strong, it should also be noted that approximately 100,000 embryos
currently exist frozen in nitrogen gas. As IVF has only recently become
affordable for middle-class women and couples, it seems likely that in the
next decades the number of embryos frozen in stasis will rise sharply. Even
if all of the people interested in adopting embryos were able to adopt,
it seems unlikely that all of the surplus embryos would be utilized. Thus
if policy-makers choose to make embryonic research illegal, the majority
of the surplus embryos will eventually be discarded due to the lack of enough
adoptive families. While federal guidelines still allow privately funded
IVF research, one state has chosen to take an unequivocal stand on this
specific issue. Louisiana has prohibited any research on IVF embryos.
(2) The morality of embryos created purely for research by soliciting the
donation of an ovum and a spermatozoon is questionable. Though some see
little difference between embryos created during fertility treatments and
embryos created for the express purpose of research, most ethicists disagree.
Margaret Somerville, of the McGill University’s Center for Medicine,
Ethics and Law, says “To transmit human life for no purpose other
than its intentional destruction, we have to ask, Are we ethically justified
in doing that?” (7).
Many religions that support embryonic stem cell research do not advocate
the creation of embryos purely for research. Though he admits it is a hotly
debated question in the Islamic world, Abdulaziz Sachedina, Professor of
Islamic studies in the religious studies department at the University of
Virginia in Charlottesville says “The consensus among Muslims does
not hold treat the embryo in first twelve days, that is before implantation,
as a living being, although it does have a pulse . . . However, it is not
permissible to fertilize an embryo simply in order to create a cell line
for research purposes” (2). Similarly, Courtney Campbell, Director
of the Program for Ethics, Science, and the Environment at Oregon State
University said Mormons believe that “human embryos are a developing
form of human life and as such command special moral respect. Procuring
embryos from infertility clinics is consistent with such respect. Creating
embryos solely for research purposes reduces the human embryo merely to
a resource and violates moral respect” (1). Further, many who disagree
with the practice of creating embryos for research argue that there are
sufficient IVF embryos currently in existence to fill the need for research.
This makes the creation of more embryos an excessive act and inconsistent
with respect for human embryos.
Some scientists argue that by creating embryos in the lab with the intension
of using them for research, they have more control over the experiment.
For example, while they might receive a surplus IVF embryo, they know little
to nothing about the heredity of the embryo, and it is more difficult to
do specialized tests on it. Most IVF embryos come from extremely healthy
ova donors and generally healthy spermatozoa donors. With donated ova and
spermatozoa, researchers can approach people with specific characteristics
that they’d like to study. Sean Tipton, spokesman for the American
Society of Reproductive Medicine says, “At one level, it's cleaner
than using leftover embryos” (3). Further, the single embryo is often
a limiting factor. One of the most important parts of scientific research
is providing results that can be verified through repeating the research
protocol. With individual embryos of unique unidentified genetic background,
it might be impossible to reliably repeat some experiments.
The discussion about the creation of embryos for research purposes is not
merely a theoretical debate. Over the years, several privately funded research
studies have been conducted and publicized after soliciting the donation
or sale of ova and spermatozoa from young people. The institutions that
ran the studies included the Eastern Virginia Medical School and the Jones
Institute for Reproductive Medicine, among others. Conceivably, many more
privately funded studies have occurred whose findings have not been brought
to the attention of the media.
In the end, while it is true that allowing scientists to create embryos
strictly for research purposes would allow them more latitude in scientific
innovation, it is a weak argument for the unnecessary creation of embryos
for experimentation. Were hundreds of thousands of surplus embryos not currently
in existence in the United States and throughout the world as a result of
the boom in IVF treatments, it would be a relevant argument. The Nuffield
Council on Bioethics writes “As long as there are sufficient and appropriate
donated embryos from IVF treatments for use in research, the Council takes
the view that there are no compelling reasons to allow additional embryos
to be created merely to increase the number of embryos available for ES
cell research or therapy” (1). In 1997, researchers at Eastern Virginia
Medical School paid young women between $1,125 and $3,500 to donate ova
for research. This also raises the question of exploitation of donors, since
there is some medical risk associated with donating ova. Allowing researchers
to be directly involved in soliciting donations of genetic material greatly
increases the potential for influencing donors. Offering any sort of incentive,
monetary or otherwise, to incite donation of ova for research has stopped
for the time being in the wake of the very negative response of ethicists.
With a lack of funding for such private research, few are undertaking stem
cell research done on embryos created strictly for research and none are
publicizing such endeavors.
(3) Embryos created through somatic cell nuclear transfer (SCNT) present
a unique research opportunity and challenge. SCNT embryos are created through
the combination of a donated ovum whose nucleus is removed with an adult
cell’s gene-containing nucleus. The resultant cell can be caused to
divide and to form an early embryo whose stem cells can be harvested. This
procedure is the basis of cloning. The American Association of Medical Colleges
says “Somatic Cell Nuclear Transfer (SCNT) or therapeutic cloning
involves removing the nucleus of an unfertilized egg cell, replacing it
with the material from the nucleus of a `somatic cell' (a skin, heart, or
nerve cell, for example), and stimulating this cell to begin dividing”
(“Somatic Cell Nuclear Transfer (Therapeutic Cloning),” 1).
Potentially, this therapy could mean stem cells that have complete immunological
compatibility with the donor, because the ova are fertilized with the patient’s
own genetic material.
Cloning has been a hotly contested issue since English author Aldous Huxley
published Brave New World in 1932. Research on embryos created through SCNT
is approached warily because many consider cloning technology tantamount
to cloning an actual human person itself. While the creation of an embryo
through SCNT is considered biological cloning, all embryos created through
SCNT for research are intended not to develop beyond 14 days, distinctly
different than the purpose of reproductive cloning. The Nuffield Council
on Bioethics, a traditionally liberal English institution, writes:
We consider that research into SCNT and other forms of reprogramming the
nuclei of human somatic cells may potentially offer very significant medical
benefits. Where such research falls within the remit of the HFE Act . .
. [we would support] such research to be licensed. We understand that a
possible objection to this is that it could prepare the ground for reproductive
cloning. However, reproductive cloning (which has the intention of producing
a new individual who is genetically identical to the nuclear donor) is not
permissible under UK law; the purpose of this proposed use of SCNT, by contrast,
is to allow research into means of producing stem cells for cell and tissue
therapy. (“Stem Cells,” 2)
Though legislation has been passed completely banning all forms of cloning
in the United States, California Senator Feinstein along with Orrin Hatch
has already introduced a bill that would revise the legislation to only
ban reproductive cloning, allowing research currently being done in her
state to continue unchecked.
The first research institution to take advantage of a new California state
policy allowing stem cell research has been Stanford University, in Palo
Alto. After receiving a substantial anonymous grant, in December Dr. Irving
Weissman, Director of the Institute for Cancer/Stem Cell Biology and Medicine
announced that Stanford would be doing research using embryos created through
SCNT. Stanford released a statement that read “Creating human stem
cell lines is not equivalent to reproductive cloning . . . in creating a
stem cell line, cells are removed from the developing cluster. These cells
can go on to form many types of tissue, but cannot on their own develop
into a human” (“Stem Cell Information and Resources,”
1).
Research on embryos created through SCNT has ethical problems similar to
those posed by embryos created for research. By definition, research cannot
be done on spare IVF embryos, and many proposed embryonic research protocols
require the use of SCNT to obtain a stem cell line appropriate to the experiment.
Thus the argument expressed by the Nuffield Council for Bioethics against
the creation of more embryos for research is not applicable for embryos
created through SCNT. Similarly, a large supply of ova must be available
to be combined with the adult stem cells, creating supply problems if ova
donations remain uncompensated and creating ethical problems if donors are
compensated. While some, like most conservative Christians, unequivocally
believe that creating SCNT embryos for research is wrong; other ethicists
find the issue more ambiguous. As recently as December of 2000, the Vatican’s
weekly newspaper L’Osservatore Romano editorialized SCNT, saying that
it was an “extremely positive element” of modern science (“SCNT
Editorials,” 1). Just a week later, a responding editorial from top
Bishops concluded that it was too soon to tell whether SCNT was licit because
they weren’t sure if the product of SCNT is human life (“SCNT
Editorials,” 1). Another objection is that the use and refinement
of SCNT may assist human reproductive cloning in the future.
While California state law has allowed and even encouraged Stanford’s
new research program, research on embryos created through SCNT is illegal
in Iowa, Michigan, and arguably Virginia. Four other states have enacted
laws controlling the SCNT technology, but their legislation is aimed at
prohibiting cloning aimed at beginning a pregnancy only. Despite vigorous
protests, however, ultimately the research at Stanford is ongoing, leaving
both secular and religious ethical questions regarding the authenticity
of the research unanswered.
(4) The final means of deriving tissue for fetal stem cell research comes
in the form of germ cells. Embryonic germ cells are tissue derived from
the unformed reproductive organs of 5 to 10 week old fetuses. While they
cannot differentiate into as many specialized cell types as embryonic stem
cells, embryonic germ cells are still considered primordial cells whose
potential to differentiate is far greater than other sources such as adult
stem cells. Germ cells are obtained through elective abortions, raising
unique ethical issues.
Groups on both sides of the abortion debate condemn the use of aborted fetuses
in research. The United Methodist Church, a traditionally liberal institution
that advocates a woman’s right to choose abortion, condemns the use
of aborted fetuses for research (“Church official lauds Bush's stem
cell research decision,” 1). President Bush, who in late 2002 supported
a ban of certain types of abortions, took an early stand on the issue of
research on aborted embryos on January 26, 2001, stating in a public speech,
“I believe we can find stem cells from fetuses that died a natural
death, but I do not support research from aborted fetuses.” At first
it might seem surprising that such divergent groups would both oppose the
use of aborted fetal tissue in research. Yet many individuals and groups
who advocate the opportunity to choose abortion do so because they support
free choice, not because they believe that abortion is inherently right.
Princeton President and Chair of the National Bioethics Advisory Commission
Harold Shapiro writes, “by using aborted fetuses for important scientific
and clinical research, [some groups believe that] you provide indirect support
for the decision to abort by lending that act some moral worth” (1).
In opposing germ cell research, groups that support an individual’s
right to make an unbiased choice without indirectly lending moral credence
to the act of abortion. Ultimately, few openly support the use of germ stem
cells in research.
In the end, some groups condemn all four means of obtaining embryonic or
germ tissue for research. They propose that rather than using any sort of
embryo in research, adult stem cells should be harvested for experimentation.
They argue that adult stem cells have just as great a potential as embryonic
stem cells. While embryonic stem cells are able to proliferate a year or
more in a laboratory, most adult stem cells cannot proliferate for extended
periods of time, making it difficult to obtain the infinite supply of cells
needed for transplants. Discovered among differentiated stem cells in tissue
or organs, adult stem cells can only differentiate to yield the major specialized
cell types of the tissue or organ. Embryonic stem cells, on the other hand,
have the potential to differentiate into virtually any specialized cell
type. Groups opposing all human embryonic stem cell research believe that
using adult stem cells would eliminate the moral problem inherent in the
creation of fetal stem cell lines, because adult stem cells can be harvested
without harming the cell source.
THE ETHICS
The ethics of the embryonic stem cell research are at once complex and multi-faceted.
In this presentation of the ethics underlying the research debate, I will
discuss some of the major ethical positions both supporting and opposing
human embryonic research. My paper will by no means comprise a complete
survey of the ethical positions regarding embryonic research; that would
be the work of hundreds of pages rather than an undergraduate thesis. Instead
I will focus on more mainstream arguments.
At this time in history, like perhaps no other, our society faces immense
ethical dilemmas compounded by the speed at which new technology is being
invented and scientific breakthroughs are being achieved. These amazing
new techniques promise to change science and medicine as we know them, both
altering current procedures as well as the way we think about those procedures.
In the last two decades, many have increasingly warned that we are getting
ahead of ourselves, utilizing new discoveries in science and medicine before
their ramifications are fully explored. Dr. Thomas Shannon, a Professor
of Religion and Social Ethics at Worchester Polytechnic Institute, writes
in An Introduction to Bioethics “the record of technology is certainly
a mixed one. Clearly technology has brought benefits . . . other technologies
have fairly negative consequences” (11).
One such technology, many argue, comes in the case of human pluripotent
stem cells. Isolating and culturing human embryonic stem cells has only
been possible since late 1998, but by 1999 scientists were already beginning
research using embryonic stem cells. But is the use of human embryonic stem
cells in research ethically acceptable? These issues bear very careful review
and consideration. In studying embryonic stem cell research, this survey
of ethical systems will concentrate on ethical positions that are frequently
used in conjunction to this particular issue.
One of the fruits of the development of modern society is that we consider
all human life precious, regardless of race, social standing, or intelligence.
Human life is considered sacred either traditionally as a gift from God
or because the person “is an inherent center of value [in and of themselves]”
(Shannon 46). This paper will primarily address western religious conceptions
of embryonic stem cell research. It is important to remember, however, that
religions centered in countries that have no legislative or scientific response
to the stem cell debate offer unique and important additions to the human
embryonic research question. For example, Damien Keown, Editor of the online
Journal of Buddhist Ethics writes, “Buddhism teaches that individual
human life begins at conception. By virtue of its distinctive belief in
rebirth, moreover, it regards the new conceptus as the bearer of the karmic
identify of a recently deceased individual, and therefore as entitled to
the same moral respect as an adult human being” (1). These views,
however, do not represent a large number of people currently making decisions
about embryonic research. Of the western religious traditions, Christianity,
Islam, and Judaism are predominant, and deserve special consideration.
The Christian argument regarding human embryonic experimentation is complex
and ongoing. The Christian denominations and groups that support the research
are greatly outnumbered by those who oppose it. The argument against human
embryonic research can be broken down into those denominations that oppose
research because they believe in life as a basic good, those that believe
research is wrong on the basis of their interpretation of the Christian
narrative, and those that oppose research because God has instructed them
through the Bible that embryos are human persons.
The Catholic Church was an early opponent of human embryonic research, and
continues to act as a religious leader opposing any sort of embryonic stem
cell research. Life, Catholicism holds, is an intrinsic good, something
we have a moral responsibility to protect. The Vatican dealt with the question
of personhood swiftly and absolutely in 1997 with Evangelium Vitae, later
writing in the Declaration on the Production and Scientific and Therapeutic
Use of Human Embryonic Stem Cells:
The living human embryo is - from the moment of the union of the gametes
- a human subject with a well defined identity . . . [it] has the right
to its own life; and therefore every intervention which is not in favor
of the embryo is an act which violates that right . . . [creating a stem
cell line is] a gravely immoral act and consequently is gravely illicit.
(6)
Indeed, Pope John Paul II spoke out against stem cell research during his
2001 World Day for Peace speech, saying “Human life cannot be seen
as an object to do with as we please . . . There can be no peace when this
most basic good is not protected.... To [the list of world injustices] we
must add . . .use of human embryos for research” (7).
Catholic ethicists Ronald Lawler, Joseph M. Boyle, Jr., and William E. May
define the human good as that which perfects and completes human nature
in their book Catholic Sexual Ethics: A Summary, Explanation, & Defense.
They refine this definition in their treatment of basic goods, things that
are pursued by people of all cultures. One such basic good, they opine,
is life. By making choices that are compatible with the love of God and
people, Catholics affirm basic goods. Actions that faith absolutely forbids
are always wrong “because acts such as these are incompatible with
the goods of persons which God calls us to love and absolutely respect”
(Lawler, Boyle, and May 90). While they do not directly address the question
of human embryonic stem cell research, it is clear that their position follows
that of the Church, absolutely opposing such an action, arguing that it
is incompatible with the basic good of life. Through affirming the basic
worth of human life, the Catholic Church is absolute in its rejection of
embryonic research as a practice.
The Protestant view of embryonic stem cell research is more complex. In
addition to being fundamentally pluralistic in nature, there are many organizations
that claim to speak the will of Protestant denominations, but none that
actually appear to have the right to that authority. Protestants rely on
the importance of individual reflection on matters of ethics, and many Protestant
ethicists have responded to the problem of embryonic stem cell research
with their own unique conclusions. Reverend Terry Hamilton, the Chaplin
of Queens College in North Carolina declared in a sermon:
According to the Presbyterian Church's Book of Order, when a person is baptized,
the congregation answers this question: 'Do you, the members of this congregation,
in the name of the whole Church of Christ, undertake the responsibility
for the continued Christian nurture of this person, promising to be an example
of the new life in Christ and to pray for him or her in this new life?'
. . . no child belongs to his or her parents, but that every person is a
child of God . . . every young one is our child, the church's child to care
for. This is not an option. It is a responsibility. (qtd. in Hauerwas 1)
This sense of personal responsibility is common to many Protestant theologians
and congregations, such as Episcopal and United Church of Christ churches
(Robinson 1). A leading Protestant theologian is Stanley Hauerwas. Hauerwas,
a United Methodist Professor of Theological Ethics at Duke University and
author of numerous titles on Christian Ethics, has also been named “America’s
Best Theologian” by Time magazine. Hauerwas concurs with Reverend
Hamilton that the Protestant Church as a body has a responsibility to every
person, particularly children and the unborn. Hauerwas argues that it is
precisely this responsibility, given by God, and reiterated in Protestant
teaching, that should lead Protestants to oppose abortion and subsequently
embryonic stem cell research. Hauerwas writes that rather than considering
life sacred in and of itself, we should recognize the special nature of
life as a gift. If we consider it sacred, we imply that we must preserve
life at all costs, and “Christians believe there is much worth dying
for” (2). Instead, Hauerwas writes, “As part of the giftedness
of life, we believe that we ought to live in a profound awe of the other's
existence, knowing in the other we find God” (3). Second, responding
to the question of when life begins, Hauerwas reminds his readers that Christians
shouldn’t spend time deciding when life begins, but rather hoping
that it has. “Having children, [then,] is an extraordinary act of
faith and hope. But as Christians we can have a hope in God that urges us
to welcome children” (3). Protestants should oppose human embryonic
research, then, because as Christians they feel drawn to live in hope that
the new life will enrich the existing community of believers. Terminating
the pregnancy runs counter to the message of hospitality for the unborn
and awe in the rich way human life can express itself. Hauerwas concludes
that Christians should be known as “those peculiar people who don’t
kill their [unborn] babies or their old people [through euthanasia]”
(Time).
Many Protestants do adopt this view, opposing stem cell research as well
as abortion, yet there are still conspicuous differences between Protestant
groups. At least one denomination, the United Church of Christ, has chosen
to support limited human embryonic research, and Presbyterian Church USA
has issued statements espousing the research, but Evangelical Christians
have a strikingly different view.
Evangelical Christians believe that they should be directed by the commands
of God as revealed through the Bible, utilizing a form of moral values known
as divine command ethics. The Evangelical Church has come out in strict
opposition of using human embryos for research, basing their argument on
Biblical references, and arguing that life is sacred from the moment of
conception. Divine command theory, or the belief that “religion tells
us how to act” (Hinman) is a form of theism, that is, the belief in
a personal God who is the creator and ruler of the world. Evangelical denominations
utilize divine command ethics, embracing the Bible as divinely inspired
and utterly without error, “the final authority for all Christian
faith and life” (“Official Creed of the Evangelical Free Church
of America,” 1). One way that Christian denominations fit divine command
ethics into their daily lives comes in the form of deontological ethics.
Knowing from scripture what God directs them to do; Christians are bound
to obey what they know as their duty absolutely.
Deontological ethics, or duty-based ethics, directs people to be guided
by their principles. Dr. Shannon writes that an example of deontological
ethics is “the Ten Commandments of the Judeo-Christian tradition.
The Ten Commandments are basically a set of moral duties that tell what
to do or not to do” (6). Practicing deontology can be enticing, because
it includes a simple way to discriminate between possible actions. It is
logical, and tends to be possible to make a solid decision quickly. It also
has its drawbacks. Because it is based on a solid set of principles, there
is very little room in deontological reasoning for individual reflection
on a particular issue. Similarly, it doesn’t take into account the
circumstances in which an individual might find oneself. Deontological ethics,
Dr. Shannon opines, “typically neglects the outcome of an act and
is inattentive to substantive differences in the outcome of our actions
or the way an unnuanced act can affect individuals or society” (6).
A Christian’s divine command practitioner’s deontological duty
can discovered through study of the Bible.
The Bible describes in detail how precious the human creation is. Indeed
their very image mirrors that of their Creator (King James Bible, Gen. 1:27-28).
Yet when does this life begin? The embryo is endowed at the moment of its
conception with its full complement of genetic material. This literally
shapes what sort of person the fetus will become, so long as the pregnancy
runs its term. At least five passages in the Bible explicitly refer to the
unborn, including Job 31:15, Psa. 139:13-16, Isa. 49:1, Jer.1:5, and Gal.
1:15. From a literalist reading of these passages, it would appear that
embryos from the moment of conception are known, cared for, and protected
by God. Further, God warns “Whoso sheddeth man's blood, by man shall
his blood be shed: for in the image of God made he man” (King James
Bible Gen. 9:6). Despite the differences in their creeds, all Christian
denominations that oppose human embryonic research utilize Biblical arguments
in their arguments. Dennis P. Hollinger writes for the Center for Bioethics
and Human Dignity, an Evangelical association that deeply opposes human
embryonic research. Hollinger equates doing research on human embryonic
stem cells with the research done in Nazi Germany. “We must not sacrifice
one class of human beings”, he chides, “to benefit another.
Scripture resoundingly rejects the temptation to do evil that good may result”
(4). Thus, many Christians heatedly oppose fetal stem cell research, arguing
that scientists should not commit evil even if a great good might come of
it. Yet many other Christian denominations support embryonic stem cell research.
The Presbyterian Church USA, the Latter Day Saints Church and the General
Synods of the United Church of Christ support limited embryonic research.
While the United Church of Christ has not come out with an official statement
unequivocally supporting embryonic research, they have produced a General
Synod resolution supporting the idea that, given an appropriate public discussion
of the issue, strictly regulated embryonic research of all types may be
undertaken (Buford 2). Similarly, the Science and Religion Information Service
(SRIS) informed the public through a press release in 2001 that the 213th
General Assembly of the Presbyterian Church USA “affirms the use of
fetal tissue and embryonic tissue for vital research” (1). Yet, they
write that respect for the embryos must be shown, and the research must
be carefully regulated. These Christian viewpoints apply a more liberal
examination of the Bible to the problem of human embryonic stem cell research
and discern their duty from critical reflection. While they do believe that
large parts of the Bible reflect the will of an omniscient and benevolent
God, they reject some parts of the Bible as being contradictory to the will
of God. Because they do not rely on the Bible for exact moral directions,
their stance is not overtly deontological. Rather, it is a combination of
using deontological ethics to judge the authority of possible acts and consequentialist
ethics to take into account the complex ethical and moral realities that
are part of modern life” (Melton). Though they have not issued an
official statement in favor of embryonic stem cell research, it is the Church
of Jesus Christ of Latter-day Saints (LDS) that has had the most impact
supporting human embryonic stem cell research.
The LDS church has had a quiet, yet very important role in the U.S. struggle
over legalizing embryonic stem cell research. In July 2001, the LDS church
issued a cautious statement, allowing that embryonic research “merits
cautious scrutiny” (“LDS Press Release” 1). Five members
of the LDS serve in the Senate: Senators Orrin Hatch, Gordon Smith, Robert
Bennett, Mike Crapo, and Harry Reid, all of whom have come out supporting
governmental funding for the research. The Mormon position is based on their
doctrinal stance that “each person lived as a spirit child of God
prior to being born and receiving a physical body on Earth” (Clark
2). The spirit and flesh are joined when or after implantation in the uterus,
making the usage of embryonic tissue in research far more acceptable. In
an open letter to President Bush in 2001, Orrin Hatch wrote “To me
a frozen embryo is more akin to a frozen unfertilized egg or frozen sperm
than to a fetus naturally developing in the body of a mother.” While
Mormons unequivocally oppose abortion, on the grounds that while it is not
murder, it is nearly as bad as murder, they believe the unimplanted embryos
are empty of the human spirit. In speaking to the Senate, Republican Senator
Smith of Oregon said that stem cells were “the dust of the earth —they
are essential to life, but standing alone, will never constitute life”
(qtd. in Clark 3).
An important difference between the Judeo-Christian and the Islamic traditions
is that while the Judeo-Christian exhorts its followers to follow the laws
of their countries, Islamic law covers all forms of life. Lawrence M. Hinman,
author of Ethics: A Pluralistic Approach to Moral Theory writes “Muslim
religious law covers virtually all areas of human behavior . . .this movement
establishes a religious state under which all citizens are subject to a
religiously based civil law” (90). The widely divergent ideas held
by Islamic ulama (clergy) about embryonic stem cell research are marked
by differing interpretations of the Surahs.
While most mainstream Muslim ulama believe that embryonic stem cell research
is appropriate, and supported by Qu’ranic law, other members of the
clergy believe that the Qu’ran explicitly forbids embryonic research.
Those who believe that the Qu’ran forbids experimentation on embryos
cite passages in which the creation of the embryo is described in detail,
such as 23:12-14, and include God’s admonition that infants (a word
that some Islamic scholars argue is meant to describe both babies and the
unborn fetuses) should not be killed out of fear or poverty (Holy Qu'ran
81:7-10). Yet while some individuals espouse this view, no mainstream Islamic
organizations are willing to support a ban on embryonic research.
Abdulaziz Sachedina, professor of religious studies at the University of
Virginia, says the true debate instead exists between those who believe
ensoulment, or the endowment of the fetus with a soul, occurs either at
40 or 120 days. Mainstream Islamic ethicists concur that stem cell research
is both acceptable and desirable before the fetus is 40 days in development.
Sachedina concluded that it is because of it therapeutic benefits that stem
cell research is acceptable in Islamic law.
Most Orthodox and Reform Jewish groups support embryonic stem cell research,
including the Union of Orthodox Jewish Congregations, the Orthodox Union,
the Reform movement’s Department of Family Concerns, the Rabbinical
Council of America, the National Council of Jewish Women, Hadassah, and
the Religious Action Center of Reform Judaism openly support fetal stem
cell research, so long as the goals of the research are unattainable by
any other means. Richard Address, director of family concerns for the Union
of American Hebrew Congregations, says Jewish tradition holds that "a
fetus less than 40 days old is not considered a human being” (2).
God, Jews believe, has given humanity the ability to create such technologies
in order that we might help to alleviate suffering. In an open July 26,
2001 letter to President Bush, Orthodox officials wrote: “Moreover,
our rabbinic authorities inform us that an isolated fertilized egg does
not enjoy the full status of person-hood and its attendant protections.
Thus, if embryonic stem cell research can help us preserve and help humans
with greater success, and does not require or encourage the destruction
of life in the process, it ought to be pursued” (qtd. by Address 5).
The main difference between the conservative Christian and the predominant
Jewish belief about the morality of using embryonic stem cells for research
is certainly personhood. Unlike the Catholic Church, Jews believe that a
fertilized embryo holds no special moral significance. Rabbi Elliot Dorff,
bioethicist and philosophy Professor at the University of Judaism in Los
Angeles writes “Genetic materials outside the uterus have no legal
status in Jewish law, for they are not even a part of a human being until
implanted in a woman’s womb, and even then, during the first 40 days
of gestation, their status is ‘as if they were simply water’”
(3). Before implantation, the embryos have no distinctive status, and their
utility to potentially alleviate suffering of actualized human persons makes
research appropriate.
The question that concerns secular ethicists is somewhat simpler than those
facing religious ethicists. They seek to answer, who is a person? Daniel
Callahan, author of Abortion: Law, Choice and Morality, and Robert N. Wennberg,
author of Life in the Balance; Exploring the Abortion Controversy, argue
that the unborn increases in value as it matures physically. Callahan describes
three schools of thought regarding personhood: “the genetic school,
the developmental school, and the school of social consequences” (378).
The genetic school believes that anyone who posses human genetic code is
a human person. Personhood is conferred at the moment of conception, because
the unicellular zygote created from the union of ovum and spermatozoa contains
all of its genetic code. One potential problem with the genetic school of
thought is that “it identifies the person with the genetic code and
is open to the charge of genetic determinism” (Shannon 48). Those
who are part of the genetic school would not condone any sort of human embryonic
research. Lord Kennet, an early opponent of stem cell research argues, “Licensing
embryo research would be the beginning of a very slippery slope indeed.
It is the threshold. After the first license to experiment on the undeniably
human, the door is open” (“7 December 1989 House of Lords Transcript,”
cols. 1027-1028). Some of the most aggressive opponents of the legalization
of research on fetal stem cells are those who believe in the genetic school,
arguing that at the moment of fertilization, the zygote accrues all the
right belonging to an independent human being. The slippery slope argument
has found significant popularity with those who believe that any sort of
moral or legal legitimation of the concept of doing research on embryos
will ultimately “corrupt and degrade our basic beliefs about what
it is to be human” (Mulkay 68).
The developmental school concurs that the fertilization of the egg marks
a point in which the embryo has the potential to develop under the right
conditions as ordained by its genetic code. Yet, they argue that some degree
of development and interaction with the environment around them is necessary
for personhood. Rational interaction is the way that the developmental school
defines personhood. Semantics are very important in interacting with this
debate. Robert N. Wennberg suggests that:
It is helpful to maintain a distinction between the terms person and human
. . . A fetus growing in a woman’s womb is human, which is to say
it is not canine, feline, or anything other than human. And a dead corpse
is still a human corpse even though it is no longer a person, its capacity
for rationally activity having been irrevocably terminated. (34-35)
Which, the authors ask, has a greater right to life: the human with potential
personhood or the human with acknowledged personhood in the form of self-aware
and rational activity? Ultimately, Wennberg concludes, “We rightly
acknowledge a fetus to be a potential person” (35). Yet there are
problems with this method of thought as well. While both Wennberg and Callahan
try to explicitly define the non-biological dimension of personhood, it
is not a dimension easily quantified. In fact, Wennberg discusses one of
the developmental school’s largest problems in being accepted by mainstream
society, namely that by his more-than-biological logic, a newborn infant
would still be considered a potential person.
The third philosophy is the school of social consequences. Rather than concentrating
on either biological or developmental determinants for personhood, the school
of social consequences focuses on the traits that society values in people.
This effectually negates the value of the biological or developmental aspects
of personhood, replacing them with those that a particular society deems
relevant. As Dr. Shannon writes, “The desires of society, expressed
in public policy, take precedence over the biological or developmental aspects”
(48). In some societies, at certain stages of development, this might appear
to be a very positive means of determining personhood. Yet, as Dr. Shannon
points out, the potential negative consequences of this school are obvious:
throughout history, societies have meted out very negative consequences
for those who do not fit the criteria for social acceptability. This orientation
closely resembles Jeremy Bentham’s conception of utilitarianism, e.g.
the idea that government is based on making the most people happy. Unlike
Kantian ethics, which value the action rather than the result, this utilitarianism
values the results rather than the actions. Thus, if treating a non-person
poorly would result in having a society comprised only of human “people”,
the action would be counted as good because the end result was desirable.
The drawbacks to this form of reasoning are obvious. Like consequentialism,
in utilitarianism it is almost impossible to identify all of the possible
effects a potential action could cause. Calculating the various results
of a particular action would take so much time that by the time the utilitarian
ethicist has made a decision, the situation will have likely shifted, prompting
the process to begin anew. Similarly, a particular person or government
is never entirely in control of a particular situation, the probability
of a particular end either occurring or not occurring. Utilitarianism is
an inefficient gauge by which to judge the morality of potential actions.
John Stuart Mill assumed that the person would eventually seek the greatest
pleasure, forgoing the pleasures of the flesh for an afternoon of scholarly
investigation. Thus, in seeking the greater pleasure of the society, Mill
assumed that the society would seek logical, academic, and moral pleasures
rather than more hedonistic, excessive pleasures. The assumption that an
entire society might be based on such a principle is faulty, and ultimately,
inappropriate.
The debate over the ethical treatment of embryos is complex and ongoing.
Many groups that feel it appropriate to support one aspect of the research
completely disagree with the methods behind another aspect of embryonic
research. Ultimately, though, it seems that the issue comes down to what
exactly the respect and dignity human persons deserve is, and further, what
exactly is a human person? Clearly, if embryos have the status of a person,
they cannot be treated as a means to even the most humanitarian end.
THE SCIENCE
While stem cell research itself is a relatively new concept dating back
only three decades, humans have been curious about the source of fertility
and pregnancy for thousands of years, and exploring the way embryos develop
since Aristotle. To understand the significance of their discoveries, it
is important to have a basic working knowledge of some scientific language.
The history of embryology is rich and interesting. For several hundred years,
questions about embryos were theoretical in nature until roughly the seventeenth
century, when scientists such as William Harvey and Regnier de Graaf dissected
female animals, eventually discovering evidence that refuted Aristotle’s
theory that conception was the result of the mingling of menstrual blood
and spermatozoa. Such animal experimentation persisted throughout the next
hundred years, eventually leading to a more modern idea of how female reproductive
organs work to produce ova and nourish embryos.
The morality of doing research on human embryos is currently a hotly debated
issue, yet it is not an issue that has only recently become relevant. Edward
Yoxen writes, “research procedures (involving thousands of human embryos
and fetuses assembled into collections of specimens) have been followed
for at least a hundred years, which raise serious moral questions”
(27). In the nineteenth and early twentieth century, research on human embryos
was limited to embryos aborted or surgically removed. It was difficult for
scientists to, in effect, compare results, as their specimens were scattered
throughout the world, and research progressed slowly.
It took scientists until November 1998 to successfully isolate and culture
human embryonic stem cells, a feat that had eluded them for more than twenty
years after embryonic mouse cells had been isolated and cultured. Embryos
are a unique source of tissue for research because embryonic stem cells,
considered precursor cells, are able to differentiate into literally hundreds
of kinds of tissue in the human body. Adult stem cells, or even germ cells,
derived from aborted fetuses have a more limited ability to differentiate.
A human embryo is defined by the American Heritage Dictionary of the English
Language as the prefetal product of conception from implantation through
the 8th week of development. For the purposes of considering developmental
stages individually, we can describe an embryo as the multi-cellular product
of the fertilization of an ovum by a spermatozoon. The fertilized ovum that
has not undergone mitotic cell division, or cleavage, is described as a
zygote. Embryonic research is generally limited to embryos less than two
weeks in development. This benchmark is legal in nature only in the United
Kingdom. Elsewhere in the world, it is a moral limit customarily adopted
by most scientists such as those currently working at Stanford. This limit
has physical as well as moral meaning, for on the fifteenth day, gastrulation,
or the formation of gut begins. Gastrulation is literally the creation of
a three-layer sac that will eventually become organs.
Before the gastrula appears in the third week, the embryo exists in the
form of the blastula, or blastosphere, consisting of globular cell layer
that encircles a fluid-filled cavity. After fertilization, the zygote begins
to undergo mitotic division. By the second day post-fertilization, the embryo
has divided once, becoming a two-cell stage embryo, and has reached the
size of .15 mm, a size that it retains throughout early cleavage. Division
continues, causing the resultant cells, or blastomeres, to grow smaller
and smaller for the embryo to remain only .15 mm in size. By the fifth day,
the embryo resembles a closely packed ball of cells, and is described as
the morula. The morula undergoes the first differentiation, in which the
tightly packed cells are compacted, resulting in the inside and the outside
cells. The embryo is now referred to as the blastula. The inside cells will
become the embryo itself, while the outside cells will become the placenta
and membranes surrounding the embryo. Three structures make up the inside
group of cells: the trophoblast, which is the layer of cells that surrounds
the blastula, the blastocoel, which is the hollow cavity inside the blastula;
and the inner cell mass, which is a group of approximately 30 cells at one
end of the blastocoel.
As gastrulation continues, cells migrate towards the center of the cavity,
forming a second spherical layer of cells. These are the mesoderm and the
endoderm. The endoderm will eventually become the lungs and the gastrointestinal
tract, while the mesoderm will eventually become connective tissue, muscle,
bone, and the urogenital and circular systems. After the endoderm and the
mesoderm appear, the ectoderm grows rapidly over the embryo. The ectoderm
will eventually comprise the epidermis, all of the sense organs, and the
nervous tissue. While the embryo changes and matures in very important ways
during every day post-fertilization, the occurrence of the primitive streak
is considered an important developmental event, and an appropriate time
to halt embryonic research.
Ultimately it was research in human developmental biology that discovered,
isolated, and cultured human embryonic stem cells. Human embryonic stem
cells appear roughly five days into the development of the embryo, after
the first differentiation occurs. It is from the inner cell mass that stem
cells arise, the cells that, if the embryo continues development, would
become all the tissues of the body.
Stem cells are isolated in the laboratory by moving the inner cell mass,
which comprises approximately 30 cells from the embryo into a plastic Petri
dish, which has been spread with a culture medium. The culture medium is
a form of nutrient broth, and the transferred cells divide and extend across
the dish, proliferating until they begin to crowd the culture dish. Typically,
the inside of the Petri dish has been coated with a layer of mouse embryonic
skin cells that are pre-treated to prevent them dividing. This cell layer
provides a sticky surface for the inner cell mass to attach to, as well
as a nutrient source for the dividing cells. When the crowding begins to
occur, the cells are gently plated into several culture dishes, a process
that is repeated many times over many months. Plating involves suspending
cells in a medium, then distributing them evenly over a pre-coated Petri
dish by gently shaking them from side to side. The process of replating
the cells is called subculturing. The original 30 cells that the inner cell
mass of the embryo may yield literally millions of embryonic stem cells.
After a period of more than six months, embryonic stem cells that have proliferated
without differentiating can be referred to as an embryonic stem cell line.
To be described as an embryonic stem cell line, the stem cells must be pluripotent
and appear genetically normal.
The potential for human embryonic stem cells are enormous. While there are
many technical problems to overcome before embryonic stem cells can be a
viable source of medical and scientific data, many steps have already been
taken. Human embryonic stem cells have been successfully isolated and cultured,
and stem cells have been caused to differentiate. Yet with a dirth of federal
funding, little research is able to go on. Stanford’s eleven million
dollar anonymous grant remains the exception, rather than the rule. In the
future, researchers project that they may be able to learn how undifferentiated
stem cells become differentiated (“Stem Cells: A Primer,” 2).
This understanding might mean that scientists would be able to understand
how diseases arise, and formulate more effective ways to respond to them.
New medications might be able to be tested on stem cell lines, rather than
on human subjects. The most amazing potential technology comes in the form
of the differentiated tissue. Research done on mouse stem cell colonies
would suggest that it is possible to reliably proliferate and transplant
differentiated stem cells, leading to high hopes for human embryonic research.
Currently, donated organs and tissue replace damaged tissue in humans, but
if researchers are able to cause stem cell lines to differentiate reproducibly,
stem cell lines might become a renewable source of cells and tissue to treat
such diseases as heart disease, Parkinson’s disease, and diabetes.
After obtaining embryonic stem cell lines, researchers can begin to prepare
differentiated stem cell lines, that is, cells that exhibit the properties
of different advanced tissues such as muscle, epithelial, germinal, and
others. By differentiating the cells, scientists may be able to generate
specialized cells needed for various therapies. For example, many theorize
that in the future embryonic stem cells may be the basis for treating Parkinson’s
disease. Parkinson’s is a very common neurodegenerative disease. More
than 2% of people more than 60 years old have some form of Parkinson’s.
Parkinson’s is likely to be an appropriate application of stem cell
treatments because researchers already know so much about the disease. Specifically,
scientists know that it is dopamine-producing (DA) neurons that are needed
to treat Parkinson’s, and have already proposed several protocols
to create and culture DA neurons from embryonic stem cell lines in the laboratory.
If researchers are able to generate a great quantity of DA neurons for transplantation
into human subjects, the transplantation procedure should be able to become
available to the general public suffering from Parkinson’s.
POLICY
President Bush in his August 11, 2001 speech about stem cell research laid
out a policy that was meant to keep from alienating any of the parties involved
in the issue. Declaring that “We do not end some lives for the medical
benefit of others” in the 8/11/2001 edition of the New York times,
the President made it clear that he thought it was a moral issue that had
already been decided. Since some 60 stem cell lines or “colonies”
were already in existence, he allowed limited research to be conducted on
them while halting federal funding for any further creation of new lines.
This was a decision that satisfied no one.
Groups opposed to human fetal stem cell research felt that it encouraged
others in the further creation of new stem cell lines, and those in favor
of the research said that allowing scientists access to a very limited amount
of lines would hinder progress. Even then, questions existed as to the viability
of some of the stem cell lines. Months later, scientists would confirm that
as many as 80% of the colonies were unusable.
In the intervening seventeen months since Bush’s decision on stem
cell research, while it has disappeared from the President’s agenda,
other lawmakers are not ignoring the debate. Senator Sam Brownback, a Republican
from Kansas has lobbied strongly for more stringent restrictions on the
research. Last year, Brownback declared, “New advances in adult stem-cell
research, being reported almost weekly, show more promise than destructive
embryo research”. As of March 2003, a bill is in progress in the House
that would criminalize the use of fetal stem cells. State responses to the
issue of human embryonic stem cell research range from California’s
endorsement of research to South Dakota’s wholesale ban on any sort
of embryonic research, regardless of the source. In all, 28 states have
introduced legislation that in some way affects embryonic research. A California
state law enacted in 2002 ignored the federal policy on stem cell research
and welcomed fetal stem cell researchers. At least one institution has already
taken advantage of the new policy. On 12/11/2002, as a result of an anonymous
grant, Stanford began a stem cell research program.
Directed by Dr. Irving Weissman, a Stanford professor, the new research
program will concentrate on nuclear transfer technology. Interestingly,
Stanford will be creating embryos through SCNT, transferring the nucleus
from diseased adult cells into donated ova. While California pioneered the
idea, Oregon, New Mexico, and Texas are considered similar legislation,
and New Jersey passed an identical bill in December of 2002.
Of all of the countries involved in the fetal stem cell research debate,
England established itself early as a leader in stem cell research. With
the creation of the 1990 Human Fertilization and Embryology, which allowed
for strictly regulated research involving embryos, the United Kingdom laid
the groundwork for consenting to human fetal stem cell research in 1999.
On December 20, 2000, a majority of 366 Parliament members voted to legalize
the creation of human fetal stem cell lines (174 voted against the action).
The UK, like other countries, requires full consent of potential donors.
The regulatory agency in the UK is the Human Fertilization and Embryology
Agency, and they are directed to be absolutely sure that no other option
exists before approving individual research.
Meanwhile, 15 European countries, including Croatia, the Czech Republic,
Denmark, Estonia, Georgia, Greece, Hungary, Lithuania, Moldova, Portugal,
Romania, San Marino, Slovakia, Slovenia, and Spain signed and ratified the
1997 European Convention on Human Rights and Biomedicine, of which Article
18:2 states “The creation of human embryos for research purposes is
prohibited” (“Convention for the Protection of Human Rights”
2). Additionally, 16 other European countries are signatories to the Convention,
but did not ratify it.
Canadian scientists are renowned for their contributions to the science
that made it possible to explore the potential of human fetal stem cells.
As early as the 1960’s, J. Till, E.A. McCullouch, and C.P. Leblond
discovered some of the main precepts that govern stem cell biology. Researchers
are however currently prevented from doing research directly on human fetal
stem cells because of a lack of clear guidelines or any sort of regulation
governing the research in Canada. The Canadian Institute of Health Research
admits that its guidelines are vague and do not clearly state if funding
is provided for fetal stem cell research. The most informative statement
available for researchers exists in the form of the 1998 Tri-Met Policy
Statement, a document created by the three Canadian federal research funding
bodies. Currently, this statement creates small groups of five individuals
called Research Ethics Boards (REBs) that make final ethical decisions regarding
federal funding for research, but it directs the REBs to consider the following:
No research may be done on any genetic material obtained from cadavers,
obtained through any sort of transaction, or acquired through any sort of
chicanery. Additionally, embryos may not be created specifically for the
purpose of research, there can be no manipulation of the genetic material
in the embryos, and all research must be completed by the 14th day after
the creation of the gametes. While at first these guidelines may seem overly
restrictive, it is instructive to note that each REB pod gets to make decisions
independently and each REB is required to only have one member that is not
a member of the research institution. Currently, Bill C-13 has been tabled
twice by the Canadian House of Commons, mostly recently in October of 2002.
C-13 roughly translates the Tri-Met’s policy into law, creating the
Assisted Human Reproduction Agency of Canada that would take over governance
and regulation of all research from the individual REBs. Canadian researchers
are currently reporting the same problems that American researchers complain
of; despite the apparent opportunity to work with fetal or embryonic stem
cells, the large amount of their work is done with adult stem cells. If
C-13 is passed, enacting even more stringent rules regarding the use of
fetal stem cell lines, it seems likely that most future work will continue
to be done on adult stem cells.
In recent months, China has chosen to legislate the creation of a state-run
embryonic stem cell bank in Tianjin, and several weeks ago, South Korea
passed a law that would, if enacted, forbid cloning and certain types of
human research. It is becoming increasingly apparent that countries, even
or perhaps especially those less technologically advanced than European
and North America powers, must pass legislation governing research, for
allowing for a lack in legislation might allow less scrupulous scientists
from other countries to travel to their country to do research.
Conclusions
Human embryonic research has not yet proven itself equal to its fantastic
promise, but it is a technology that has been available just over five years,
a period in which few human stem cell colonies have been created, and fewer
researchers have been able to take part in the research. Groups and individuals
opposed to human embryonic research have claimed that adult stem cells are
a far more productive and humane means of research, citing the scientific
advances researchers have already made using adult stem cells, derived without
harming the donor, while research on embryos has discovered little. Scientists
believe that adult stem cells may even be exploitable for cell therapies,
and have succeeded in causing certain adult stem cells to differentiate
into a limited number of specialized tissues. This progress is not reflected
in human embryonic research. It is true: human embryonic research has yielded
little. Yet while researchers on human stem cell colonies have encountered
unexpected problems in the researchers, potential applications for the technology
have expanded. With this research, scientists will be able to learn vital
information about how stem cells begin to differentiate, and what makes
these precursor cells different than specialized cell types. Specifically,
they want to know why embryonic stem cells can proliferate in a laboratory
for a year or more without differentiating, while adult stem cells cannot,
and what are the factors within an individual organism that normally direct
stem cell proliferation and renewal? With this information, and the ability
to create an unlimited supply of specialized cells with which to treat patients
with Parkinson’s, diabetes, and other diseases. Further, scientists
believe that with a greater understanding of human embryonic stem cells,
they may be able to use the unique properties of the stem cell colonies
to test new drugs without potentially harming subjects, and even learn more
about birth defects. These medical treatments will not be possible if experimenting
on human embryos is forbidden.
Clearly the viewpoints of religious groups are important to the ethical
debate, whether one is religious or agnostic. Their opinions, reflected
in the large groups of the faithful around the world, change public policy
and affect the ongoing debate. But do they really reflect the numbers of
people in each denomination? In polls, a majority of Catholics responded
that they supported some form of limited stem cell research (Green), far
outnumbering the smaller percentile that supported the Vatican’s position.
Similar trends seem to abound in the last two decades. It seems possible
that while churchgoers listen and respect their church’s input on
lifestyle, government, and ethical decisions, ultimately they come to their
own conclusion, not necessarily one that reflects their church’s official
stance. Thus, while this conclusion will take into account arguments made
by religious groups, whether they reflect the feelings of the members of
religious groups is questionable.
Unlike the arguments made by many Jewish and Islamic groups, it seems impossible
to view the conceptus as anything other than fully human; even the most
elementary study of biology makes it clear that the unicellular zygote possesses,
at the moment of its creation, a full complement of human genes.
The Christian viewpoints regarding human embryonic research are numerous
and complex, but ethicist and theologian Stanley Hauerwas, in his Protestant
critique of human embryonic stem cell research, presents a compelling case
opposing the research. While Hauerwas does not speak for Christianity, much
less even for a single congregation, his argument is suitable for a critique
of the main-stream Christian opposition of embryonic research. Hauerwas
argues that the Church- every church- bears a heavy responsibility to care
for and love every person, especially the children. Hauerwas speaks of legalistic
Americans who consider every issue as an issue of rights. Christians, Hauerwas
avers, “do not believe that we have a right to do with our bodies
whatever we want” (3). Directed to live a life of love and hope, Hauerwas
believes Christians must not do things prohibited by God, or else they “are
no longer a member of us [the church]” (3). He considers abortion
and embryonic research examples of things Christians may not do. While it
may be true that a Christian is forbidden from doing certain things, Hauerwas
provides limited scriptural and generalized evidence for his argument. Instead,
he writes that abortion is inhospitable, and isn’t congruent with
the life of love and hope that he believes Christians are lead to live.
Christians might respond to this argument that it is precisely because they
have been directed to live a life of love and hope that they must support
some form of human embryonic research. Numerous scriptural references concern
care for the needy or sick; information derived from human embryonic stem
cell research has the potential of helping both classes. It is only by discovering
the means of producing large quantities of cells for cell therapies that
it will be available to help people suffering from debilitating diseases.
Similarly, the moral quandary of involving rationing and self-aware humans
in researching testing pharmaceuticals would be unnecessary, if we can cause
stem cells to proliferate in great enough abundance.
Yet one more issue must be resolved, however. What, finally, constitutes
personhood? Biologically, the conceptus is fully human from the moment of
fertilization, but the secular developmental school’s argument for
progressive personhood is the most persuasive. Robert Wennberg writes, “A
person is in a strict sense a being who posses the developed capacity to
engage in acts of intellect . . . acts of emotion . . . and acts of will”
(34). Human fetuses and human infants alike are genetically human, but not
yet human persons. Thus, a genetically human being that does not yet possess
personal qualities does not have as great a right to life as a biological
human being that also has personal qualities in the form of rational thought.
This conclusion neither meshes with my church nor with the laws of my country,
for just as the United Methodists have silently opposed human embryonic
research; the United States considers infanticide murder.
Ultimately, the use of human fetal tissue in research is justified, so long
as the methods of procurement of cell colonies are very carefully regulated.
A clear distinction should be drawn between the four means of producing
embryos for research, however. Creating embryos for research, especially
after offering women large sums of money for donating ova, cannot be so
easily condoned. While scientists are correct that without restrictions
on embryo creation, they might be able to do even more important research,
that does not necessarily imply that they should be allowed free reign.
Human embryos are developing human life, and as such, they deserve respect.
Using surplus embryos from fertility clinics is consistent with this respect.
Creating embryos solely for research purposes, however, reduces the human
embryo merely to a resource and violates moral respect.
Yet this argument does not necessarily prevent researchers from using SCNT
to create embryos for research. While, strictly, these are embryos created
for research, there is no great stockpile of extraneous SCNT embryos currently
in existence. Instead, there are very real problems that may be able to
be solved by the use of SCNT embryos in research. For example, cell therapies
potentially could be created that are genetically identical to a particular
patient, nearly eliminating the chance that the transplant could be rejected.
The argument could be made that the utilization of surplus IVF embryos for
research, like the creation of embryos for research, shows a lack of respect
for the human embryo. Yet the utilization of surplus embryos for research
shows a fulfillments rather than a lapse in the treating of human embryos
with respect. Research done on IVF embryos, would, in the best of situations,
be regulated to an extent that the scientists would have utterly no contact
with either the IVF clinics or the progenitors of the embryos. When they
proposed embryonic research, their protocol would involve embryos that already
existed were considered superfluous. Rather than creating embryos strictly
for the purpose of research, these embryos had been originally created because
a woman or couple had hoped to have a child or children. Were they not to
be used for research, these embryos would eventually become humanely euthanized.
Thus, the use of them for research that, regulations would insist, benefited
the human race in a manner unobtainable by any other means, would be far
better than destroying the embryos at utterly no gain. Some would argue
that these extraneous embryos could be adopted. The surplus of IVF embryos
currently in existence defy claims that, should the research stop, all could
be “adopted”, thus this is an illogical argument.. The use of
IVF embryos in research is a respectful way for human embryos to help alleviate
human suffering rather than simply be disposed of.
The use of tissue harvested from aborted fetuses remains a questionable
issue. Informed consent would insist that the woman undergoing the abortion
procedure be completely educated in the potential use of the germ cells
before agreeing to their use by researchers. This could lend moral justification
to the act of abortion, for there would be a potential good coming out of
the act. Yet, through careful regulation, this problem could be surpassed.
Perhaps patients could be told about the opportunity to donate the fetal
tissue for research only after the procedure had taken place. This regulation
would remove the element of moral justification from the act of abortion,
as well as ensure that no patients felt pressured in any fashion. Moreover,
the firm guidelines that must be set in place that would both regulate the
research to which was very important, and determine which protocols absolutely
had to be done on embryonic or germ stem cells. Finally, this technology
should be set aside until conclusive legislation is set in place governing
it. As it is, there are many groups whose actions may be unethical, directly
purchasing parts of fetuses from abortion clinics and actually advertising
“healthy, perfect, fresh” tissue and specific body parts to
research facilities. Thus, ending the research for the time being seems
appropriate.
Carefully legislated human embryonic stem cell research should be allowed
for two reasons. First, the unborn conceptus has less of a right to life
than reasoning human persons. Second, the religious ideal promulgated by
Judaism as well as some Protestant congregations to ameliorate suffering
and increase scientific knowledge that may one day help the sick. It is,
then, the utility of the research makes the use- and subsequent end of the
potential human persons- acceptable.
Works Cited
“7 December 1989 House of Lords Transcript.” 7 December 1989.
Address, Richard. Interview, 28 December 2002.
“America’s Best Theologian.” Time. 17 September 2001.
American Association for the Advancement of Science. “Stem Cell Research
and Applications: Monitoring the Frontiers of Biomedical Research.”
<http://www.aaas.org/spp/sfrl/projects/stem/report.pdf>
Aristotle. The History of Animals. Trans. D’arcy Thompson. <http://classics.mit.edu/Aristotle/history_anim.7.vii.html>
Bailey, Ronald. “Getting On With It.” Reason Online. 24 August
2000.
Berke, Richard L. “The President’s Decision: The Constituencies;
Bush Appears to have Straddled a Divide.” New York Times 11 August
2001.
Bible, The. King James Version. New York: Macmillan, 2001.
Boyle, Joseph, May, William E., and Ronald D. Lawler. Catholic Sexual Ethics:
A Summary, Explanation, and Defense. New York, Our Sunday Visitor, 1998.
Broadway, Bill. “Faith Is a Force On Both Sides of Stem Cell Debate:
Religious Communities Split Sharply On Permitting Embryonic Research.”
Washington Post 4 August 2001.
Buford, Ron. “Testimony of Ronald Cole-Turner to the National Bioethics
Advisory Commission (NBAC).” <http://www.ucc.org/justice/stemcell/paper.htm>
Callahan, Daniel. Abortion: Law, Choice and Morality. New York: Macmillan,
1970.
Callahan, D. and L.R. Kass. “Cloning's Big Test.” The New Republic.
6 August 2001. http://www.thenewrepublic.com/080601/kass080601.html
Campbell, Courtney, Associate professor and director of the Program for
Ethics, Science, and the Environment at Oregon State University in Corvallis,
and a member of the Mormon faith. <http://www.science-spirit.org/webextras/courtney.html>
Canadian Institute of Health Research. 19 January 2003. CIHR. 28 February
2003. <http://www.cihr-irsc.gc.ca/index_e.shtml>
Caplan A., and G. McGee. “The Ethics and Politics of Small Sacrifices
in Stem Cell Research.” Kennedy Institute of Ethics Journal. 1999.
151-158.
Center for Bioethics and Human Dignity. “On Human Embryos and Stem
Cell Research: An Appeal for Legally and Ethically Responsible Science and
Public Policy.” 1 July, 1999. <http://www.stemcellresearch.org/statement/statement.htm>
“Church official lauds Bush's stem cell research decision.”
10 August 2001. http://umns.umc.org/01/aug/346.htm
Clark, Drew. “The Mormon Stem-Cell Choir.” 3 August 2001. <http://slate.msn.com/id/112974/>
Cole-Turner, Ronald. “Testimony of Ronald Cole-Turner to the National
Bioethics Advisory Commission (NBAC)” United Church of Christ. http://www.ucc.org/justice/stemcell/paper.htm
Congregation for the Doctrine of the Faith. “Instruction on Respect
for human life in its origins and on the dignity of Procreation: Donum Vitae.”
Congregation for the Doctrine of the Faith Special Issues. “Ethics
and the Cloning of Human Embryos” Kennedy Institute of Ethics Journal
1994. 187-282.
“Convention for the Protection of Human Rights and Dignity of the
Human Being with regard to the Application of Biology and Medicine: Convention
on Human Rights and Biomedicine.” <http://conventions.coe.int/Treaty/en/Treaties/Html/164.htm>
Dorff, Elliot. <http://web.mit.edu/jsheffi/www/stemcell.htm#_ftnref14>
Dyson, Anthony, and John Harris, eds. Experiments on Embryos. New York:
Routledge, 1990.
Edwards, Robert. “Ethics and embryology: the case for experimentation.”
Experiments on Embryos. New York: Routledge, 1990.
Elias, Paul. “Stanford to Develop Human Stem Cells.” December
2002. <http://story.news.yahoo.com/news?>
Englehart, H. Tristam. Foundations of Bioethics. Oxford: Oxford University
Press, 1996.
“Ethical Issues in Stem Cell Research.” The National Bioethics
Advisory Commision. September 1999. <http://bioethics.gov>
Fletcher, J.C., and J.D. Schulman. “Fetal Research: The State of the
Question.” Hastings Center Report 15 April 1985. 6-12.
Genel, Myron, M.D. “Should federal funds be used in research on discarded
embryos?” Physicians Weekly 4 October 1999. <http://www.physweekly.com/archive/99/10_04_99/pc.html>
Green, Ronald M. “The Stem Cell Conundrum.” <http://www.trincoll.edu/depts/csrpl/RINVol4No3/stem%20cell.htm>
Guenin, Louis. “Morals and Primordials” Science. 1 June 2001.
Hauerwas, Stanley. ABORTION. <http://lifewatch.org/abortion.html>
Hinman, Lawrence M. Ethics: A Pluralistic Approach to Moral Theory. New
York: Harcourt Brace, 1994.
Hollinger, Dennis P. “Stem Cells & Our Moral Culture.” 15
December 2001. <http://www.cbhd.org/resources/aps/dphcomment2.htm>
Holy Qu'ran. Trans. M. H. Shakir. Elmhurst, NY: Tahrike Tarsile Qu’ran,
n.d
House of Lords Transcript. 7 December 1989. Columns 1027-8.
Kellogg, Bob. “Stanford Launches Stem Cell Research Program.”
12 December 2002. <http://www.family.org/cforum/fnif/news/A0023641.html
>
Keown, Damien. <http://www.science-spirit.org/webextras/keown.html>
Knight, Kevin. The Catholic Encyclopedia Volume I. New York: Robert Appleton
Co., 2003.
Kuttner, R. “The Great Obfuscator.” The American Prospect. <http://www.prospect.org/print/V12/16/kuttner.html>
10 September 2001.
Lanza, R.P., A.L. Capian, L.M. Silver, J.B. Cibelli, M.D. West, R.M. Green.
“The Ethical Validity of Using Nuclear Transfer in Human Transplantation.”
Journal of the American Medical Association. 27 December 2000. 3175-3179.
L.D.S. Press Release. <http://lds.about.com/library/bl/faq/blstemcell.htm>
Macdonald, Chris, PhD. “Stem Cells: A Pluripotent Challenge”
Ethicsweb.ca Papers. <http://www.ethicsweb.ca/papers/BioScan-cm.pdf>
MacIntyre, Alasdair. A Short History of Ethics. New York: Touchstone, 1996.
Meilaender G. “The Point of a Ban: Or How to Think about Stem Cell
Research.” Hastings Center Report. 2001. 9-16.
Melton, Gordon, Ed. The Encyclopedia of American Religions: A Comprehensive
Study of the Major Religious Groups in the United States and Canada. New
York: Triumph Books, 1989.
Meyer M.J., and L.J. Nelson. “Respecting What We Destroy: Reflections
on Human Embryo Research.” Hastings Center Report. 2001. 16-23.
Mulkay, Michael. The Embryo Research Debate: Science and the Politics of
Reproduction. Cambridge: Cambridge University, 1997.
National Institutes of Health Guidelines for Research Using Human Pluripotent
Stem Cells. 25 August 2000, revised. http://www.nih.gov/news/stemcell/stemcellguidelines.htm
Needham, J. A History of Embryology. Cambridge: Cambridge University Press,
1934.
Nova In Vitro Fertilization and Oocyte Donation. 29 July 2002. Nova IVF.
31 March 2003. <www.novaivf.com>
Nuffield Council on Bioethics. “Stem Cells.” <http://www.nuffieldbioethics.org/publications/stemcells/rep0000000299.asp>
“Official Creed of the Catholic Church.” <http://www.bible.ca/cr-Evang-free.htm>
“Official Creed of the Evangelical Free Church.” <http://www.bible.ca/cr-Evang-free.htm>
Paul II, Pope John. Encyclical Letter Evangelium Vitae. 25 March 1995.
Paul II, Pope John. 1995 Encyclical: The Gospel of Life. <http://www.texlife.org/docs/embryos.html>
Pellegrino, Edmund D., M.D. “Should federal funds be used in research
on discarded embryos?” Physicians Weekly 4 October 1999. <http://www.physweekly.com/archive/99/10_04_99/pc.html>
Pontifical Academy for Life. “DECLARATION ON THE PRODUCTION AND THE
SCIENTIFIC AND THERAPEUTIC USE OF HUMAN EMBRYONIC STEM CELLS.” Vatican.
<http://www.vatican.va/roman_curia/pontifical_academies/acdlife/documents/rc_pa_acdlife_doc_
20000824_cellule-staminali_en.html#_edn4>
Porter, Burton. The Good Life: Alternatives in Ethics. New York: Ardsley
House, 1995.
“PRESBYTERIANS VOTE IN FAVOR OF FETAL, EMBRYONIC, AND STEM CELL RESEARCH.”
Science and Religion Information Services. http://www.sris.info/brief.ep.html?id=6
Robinson, B.A. “Divisions Within Protestantism.” 4 November
2002. http://www.religioustolerance.org/chr_divi2.htm
Ruse, Michael, and Aryne Sheppard. Cloning: Responsible Science or Technomadness.
New York: Prometheus Amherst, 2001.
Sachedina, Abdulaziz, Professor of Islamic studies in the Religious Studies
Department at the University of Virginia in Charlottesville. <http://www.science-spirit.org/webextras/sachedina.html>
Sarton, G. “The Discovery of the Mammalian Egg and the Foundation
of Modern Embryology.” Isis 16. 1931. 315-330.
Schmidt, Richard, M.D. Personal Interview. 16 January 2003.
Science and Religion Information Service. “PRESBYTERIANS VOTE IN FAVOR
OF FETAL, EMBRYONIC, AND STEM CELL RESEARCH.” 2001. <http://www.sris.info/brief.ep.html?id=6>
“SCNT Editorial.” L’Osservatore Romano. December 2000.
<http://www.vatican.va/news_services/or/home_eng.html>
Shannon, Thomas, M.D. An Introduction to Bioethics, 3rd Edition. New York:
Paulist Press, 2000.
Shapiro, Harold. October 25, 1999 interview. <http://www.princeton.edu/pr/pwb/99/1025/teach.shtml>
“Somatic Cell Nuclear Transfer (Therapeutic Cloning).” 29 March
2002. AAMC. <http://www.aamc.org/advocacy/library/research/res0003.htm>
Somerville, Margaret. The Ethical Canary. Toronto: Penguin, 2002.
“Stem Cell Information and Resources.” December 2002. Stanford
University Medical Center. <http://mednews.stanford.edu/stemcell-index.html>
“Stem Cells: A Primer.” National Institutes of Health. <http://www.nih.gov/news/stemcell/primer.htm>
The American Heritage Dictionary of the English Language. Fourth Ed. New
York: Houghton Mifflin Company, 2000.
Tipton, Sean. Spokesman for the American Society of Reproductive Medicine
statement. http://www.lougehrigsdisease.net/als_news/010711embryos_created_for_research_pur.htm
Warnock Committee. 13 February 2002. <http://www.parliament.the-stationery-office.co.uk/pa/ld200102/ldselect/ldstem/83/8301.htm>
Wennberg, Robert N. Life in the Balance; Exploring the Abortion Controversy.
New York: Eerdmans, 1985.
World Day for Peace Pope John Paul Message. <http://www.vatican.va/holy_father/john_paul_ii/messages/peace/documents/hf_jp-ii_mes_20001208_xxxiv-world-day-for-peace_it.html>