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March 23, 2005
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Q & A on Human Cloning & Embryo Research in
There are two kinds of stem cell research. The first kind involves adult stem cells. The second involves embryonic stem cells. We object to the latter.
The Catholic Church fully supports adult stem cell research. Adult stem cells can be found throughout the body of a maturing human being at the fetal, infant, child and adult stages. They can be obtained without harming the individual from whom they are taken. Therapies involving adult stem cells are already working.
In
fact, promising heart research with adult stem cells is going on right now at St.
Elizabeths Hospital in
Embryonic stem cell research involves the destruction of human life. Embryonic stem cells can only be obtained from human embryos. The process used to obtain embryonic stem cells kills the embryo.
Exactly. The debate is not over stem cell research generally but over one particular type of stem cell research. The Catholic Church joins those who oppose the taking of life even for the noble purpose of curing. Thats whats at stake in embryonic stem cell research. The ends do not justify the means. Adult stem cell research involves none of this controversy.[2]
No. Amazingly, Dr. Jeffrey Maclis, a Harvard Stem Cell Institute researcher at Mass. General Hospital told the Boston Herald that Zero patients - period - have been helped by adult stem cell biology.[3] Lets take a look at the actual record.
According to the National Institutes on Health, medical therapies using adult stem cells are effectively treating patients for over 100 health disorders and conditions. As of August 2004, 563 clinical trials involving treatments for patients using adult stem cells were underway. No clinical trials involving human embryonic stem cells were reported.[4]
The website for the Cord Blood Registry carries several moving stories of people cured of such diseases as leukemia and sickle cell anemia. They benefited from adult stem cells found in placental and umbilical cord blood.[5] In addition, patients being treated with adult stem cells for spinal cord injury and Parkinsons Disease shared their successes at a congressional hearing in 2004.[6]
An excellent online review of scientific and medical journal reports of adult stem cells successes demonstrates that thousands of people have benefited from adult stem cell research.[7] Adult stem cells work and are changing lives for the better. Science does not have to kill in order to cure!
Dr. David Prentice[8] has examined all of the supposed advantages of embryonic stem cells over adult stem cells closely. He summarizes the progress with adult stem cells as follows:
[A]dult stem cells have been shown by the published evidence to be a more promising alternative for patient treatments, with a vast biomedical potential. Adult stem cells have proven success in the laboratory dish, in animal models of disease, and in current clinical treatments. Adult stem cells also avoid problems with tumor formation, transplant rejection, and provide realistic excitement for patient treatments. [9]
Besides already helping people, according to Dr. Prentice:
1) Adult stem cells are proving to be much more versatile than first believed;
2) Adult stem cells are demonstrating the capacity to produce a virtually unlimited supply;
3) Adult stem cells are obtainable through methods that are not controversial;
4) Adult stem cells do not carry the risks of tumors posed by embryonic stem cells.
By contrast, he adds, human
embryonic stem cells have never successfully been used in clinical trials, have had
lackluster success in combating animal models of disease, and carry significant risks,
including immune rejection, tumor formation, and genomic instability.[10]
Scientists
want to create an unlimited supply of human embryos to be laboratory sources for embryonic
stem cells, all made to order. Cloning is the
process they want to use to copy human life at the embryonic stage in the laboratory. Stem cells would then be harvested from these
embryos. The scientists want the legislature
to remove any legal impediments to cloning embryos in
Cloning works this way: The scientists take a fully developed cell from an adult. An ordinary skin cell would suffice. They also acquire a womans egg through a method that is painful and risky to women, called super-ovulation. Then they transfer the nucleus of the skin cell into the egg after removing the eggs own nucleus. The nucleus of the skin cell has the full genetic code of the person who gave the skin cell. Finally, the scientists apply an electrical charge or add chemicals to jump-start growth.
This
process creates a living embryo with the full human genetic code. In research planned in
At a hearing before the state legislature in February 2005, scientists noted that the embryonic stem cells would provide the means to study the causes of diseases. This indicates that cloning would be used to intentionally create diseased embryos for basic research![11]
Advocates for embryonic stem cell research make this false distinction. They argue that cloning to create embryos to harvest their embryonic stem cells is not reproductive. Instead, they claim, it is only therapeutic because the goal is to find cures, and not grow the clone beyond the embryonic stage. That is, dont worry, because we dont want to implant the cloned embryo and bring it to birth.
Yet, all cloning is reproductive. And research that kills human life is hardly therapeutic to the destroyed embryos.
Besides, as the American Society for Reproductive Medicine has noted, If undertaken, the development of SCNT [somatic cell nuclear transfer, or cloning] for such therapeutic purposes, in which embryos are not transferred for pregnancy, is likely to produce knowledge that could be used to achieve reproductive SCNT.[12] The research involved would just lay the groundwork for creating and implanting cloned human life to mature to birth and beyond.
Thats another reason why all research involving the therapeutic or reproductive cloning of humans should be banned.
No. This doesnt square with the evidence.
The denials are based on two false assertions. First, researchers argue that the process they are using is not cloning but rather is something different, called somatic cell nuclear transfer. Second, they argue that the product of this process is not a human embryo or even human life, but is only a collection of cells.
For starters, two different federal bioethics commissions contradict these claims.
Under
the
A
As detailed in the JAMA article, Daleys technique includes a step at which the cell developed into a blastocyst-stage embryo and then [c]ells from the inner cell mass were removed to generate an embryonic stem cell line.[15]
It
is this extraction that kills the embryo, as admitted by cloning researchers at Advanced
Cell Technologies in
Finally,
according to Dr. Glenn McGee, a bioethicist at the
Yes to both questions.
The National Bioethics Advisory Commission concluded in 1999 that human embryos deserve respect as a form of human life.[18] The Presidents Council on Bioethics stated in 2004 that the developing embryo . . . is not a mere heap or aggregate of cells but instead is governed by an internal principle of development that shapes and directs its transformations from a primordial and unfolding whole that functions as a whole . . . into a mature whole being.[19] In other words, the embryo is human, alive, and growing and is not a bunch of cells.
The leading clinical textbook on embryology recognizes the one-cell embryo at the zygote stage to be the beginning of a new human being and defines an embryo as the developing human during its early stages of development.[20] In 2002, the National Academy of Sciences acknowledged that in medical terms, the embryo is a developing human from fertilization onwards.[21]
The science tells us that an embryo is the youngest member of the species of human beings. Ethics determines how we treat this most vulnerable innocent life.
A flyer circulated by the Juvenile Diabetes Research Foundation International asserts that the resulting cell from cloning has no chance of developing into a human being because it is never placed in a uterus. Thats like saying that a homeless person does not exist as long as he or she is barred from entering a house. All that changes during implantation is location, not the existence of the embryo. Denying the embryo a nurturing environmentand then causing his or her destructiondoes not prevent the embryo from being human. Rather, it results in a death that is itself inhumane.
Yes. As the Presidents Council on Bioethics put
it, Human cloning, therefore, is the asexual production of a new human organism that
is, at all stages of development, genetically virtually identical to a currently existing
or previously existing human being.[22]
To be virtually identical
says it all. Outside of the means used to
create the new life, a cloned human embryo is no different in biological status from any
other human being.
Perhaps the scientists are concerned about the financial ramifications. The controversy involved with using human sacrifice as a means to develop medicines and therapies has scared investors. As noted recently in the Journal of Biolaw & Business, [l]argely due to the controversy surrounding the harvesting sources of HESCs [human embryonic stem cells], governmental and private funding for HESC research has been difficult to attract in many countries.[23]
It should be no surprise if they want to minimize the connection between such research and the killing of human life. While there are scientists who undoubtedly are sincere and are seeking to help sick people, the prestige that comes with being the first to accomplish breakthroughs and the potential for economic gain continue to exert their own pressures to deny the moral issues at stake.
Also, there is a very strong ethical tradition in this country that human beings are not to be treated as fodder for harmful research. There is a tragic history of exploitation, even among our prestigious scientific and academic institutions. This has prompted society to put limits on science in the name of human dignity. Promoters of embryonic stem cell research want to avoid any perception that they are involved with unethical science.
That means when they deny any connection between their research and the cloning and taking of human life, we have to be very careful. The facts, and the incentives, point the other way.
As the Massachusetts Catholic Bishops put it in their March 2005 statement, the intrinsic worth of human life is not affected by whether one is wanted or abandoned.[24]
One of the scientists doing destructive embryonic research, Dr. Douglas Melton of the Harvard Stem Cell Institute, refers to such embryos as excess material.[25] This dehumanizes them. It crosses an ethical line to deny the dignity of human beings in order to exploit them in medical experiments.
There is some bait-and-switching going on. When embryo researchers first started lobbying in the public policy arena, they argued that the use of leftover frozen embryos would be critical to and sufficient for their research.
For
example, in 2001, a letter to President George W. Bush drafted by scientists at Advanced
Cell Technology in
Now they have changed their tune.
They are saying now that the frozen embryos wont meet their needs after all. They want to ski further down the slippery slope by cloning human life to destroy it.
In 2002, the RAND Corporation, a non-profit research and analysis group, issued a study indicating the existence of 400,000 frozen embryos stored in IVF clinics in the Unites States. The study determined that while 11,000 of these embryos were available for research, only about 275 stem cell lines could be expected to be produced due to the poor condition of the embryos, their time in storage, and inability to survive the thawing process.[27]
After first being told that discarded embryos were essential, now we are being told that the vast majority of frozen embryos would be unavailable or of no use to scientists. In actuality, the perception that fertility clinics are overstuffed with extra embryos is the result of press sensationalism."[28]
Yes. In the words of a pro-cloning group called the Coalition for the Advancement of Medical Research, the [b]ottom line [is]: scientists need more cell lines to fulfill the promise of embryonic stem cell research.[29]
The trouble is, cloning has its own supply and demand problem, and it has to do with getting enough eggs from women. This increases the risk that women, especially poor women of color, will be exploited.
This is one of the few areas where abortion rights feminists and the Catholic Church are in agreement. Judy Norsigian, the executive director of the Boston Womens Health Collective and author of Our Bodies, Ourselves, has testified against cloning before Congress and before the Massachusetts Legislature because of the negative impact it will have on women.
In a recent op ed in the Boston Globe, Norsigian wrote:
Omitted from the polarized debate is any discussion of the thousands of women who will need to undergo egg extraction procedures for such embryo cloning. A primary concern is the substantial risks to women's health posed by the extraction procedure and the inability to obtain true informed consent from egg donors given the current lack of adequate safety data.[30]
In her 2002 committee testimony before the U.S. Senate, Norsigian provided more
background:
One researcher stated that stem cells might be able to provide up to 1.7 million therapies per year. This would require a minimum of 5-8 million human eggs per yearassuming a very optimistically high success rate of 1 stem cell culture out of 3-5 clonal embryos. Thus, it is highly likely that many women will become repeat donors, and that there would be massive expansion in the use of women as paid egg producers. We know nothing about the health risks of such repeat donations.[31]
Yes. According to the JAMA article referenced above,
One limiting feature for human nuclear transfer is the availability of eggs, said
[Dr. George] Daly. His group [at Harvard] has
been interested in coming up with strategies that do not depend on female egg donors, an
expensive and impractical approach for research.[32]
To date, they have not succeeded.[33]
In a memorandum submitted to the Joint Committee on Economic Development and Emerging Technologies in February, 2005, Dr. Suzanne Parisian, former Chief Medical Officer of the Food & Drug Administration, writes that [f]rom a purely practical perspective, those promoting SCNT [somatic cell nuclear transfer, or cloning] may be unknowingly tackling a far more costly and serious health burden by allowing the expanded use of IVF stimulation drugs for SCNT.[34]
Dr. Parisian outlines several concerns:
The pro-cloning group, the Coalition for the Advancement of Medical Research, states that:
the cells currently available to researchers [from frozen embryos in IVF clinics] is insufficient because . . . [t]hey are not sufficiently racially or ethnically diverse. Certain diseases are more prevalent in people of particular races, like sickle cell disease. By creating new stem cells from people of specific races, scientists could help unravel the causes of these diseases.[35]
This is the proof that women of color will be targeted for their eggs. This is not the goal of a fringe organization. The CAMR is comprised of nationally-recognized patient organizations, universities, scientific societies, foundations, and individuals with life-threatening illnesses and disorders, advocating for the advancement of breakthrough research and technologies in regenerative medicine.[36]
Members
include
Concern
about this targeting of women of color, especially in
Yes,
on
In the preamble to its Declaration, the U.N. emphasized that the promotion of scientific and technical progress in life sciences should be sought in a manner that safeguards respect for human rights and the benefit of all and warned of the serious medical, physical, psychological and social dangers that human cloning may imply for the individuals involved, and also . . . the need to prevent the exploitation of women.
Mrs. Patricia Payne, who has Parkinsons Disease, and yet who testified against embryonic stem cell and cloning research at the State House in Boston, put it best:
As you can see, I am suffering immensely from my Parkinsons, and from the bone disintegration around my lower spine, which floods my whole body with constant pain. How I want to relieve my suffering; especially of the body which I carefully conditioned for years as a classical dancer. But my suffering isnt the real issue! The real issue is what we are being asked to do in the hope of relieving our suffering. In Embryonic Stem Cell research, an embryonic human being is sacrificed in order to get a hold of embryonic stem cells. I dont want to see cures, even a cure for my terrible disease, to be obtained by destroying a fellow human being at their earliest and most vulnerable stage of their existence. . . .
There is a universal moral law, which transcends
history and culture, and is a characteristic principle of high civilization. It is that the end does not justify the
means. To kill one human being for the benefit of another is never morally
justifiable. To kill the weak in order to benefit the strong is even more objectionable.
Please choose a good, not an evil means for helping those who suffer. The choice is not
between science and ethics, but between a science that is ethically responsible and a
science that is not. [39]
This is not an issue of religion against science. The move in the United Nations to ban cloning and embryo research demonstrates rather that this is an issue about human rights and ethical science.
Massachusetts Catholic Conference, West End Place, 150 Staniford St., Suite 5, Boston, MA 02114-2511
(p) 617-367-6060 (f) 617-367-6060 (e) staff@macathconf.org (w) http://www.macathconf.org
ENDNOTES
[1]
Rick Weiss, Marrow Has Cells Like Stem Cells, Test
Show,
[2]
See the
[3]
Kimberly Atkins, Stem Cell Debate Gets Serious As
Legislation Picks Up Steam,
[4]
Letter from James F. Battey, Jr. to Cong. Mark Souder (
[5] Real People, Real Stories, CBRCord Blood Registry, at
http://www.cordblood.com/cord_blood_banking_with_cbr/realpeople_realstories/index.asp.
[6]
July 2004: Testimony Before the U.S. Senate
Commerce Committee on Science, Technology, and Space, linking to several individual
testimonies, online at http://www.stemcellresearch.org/testimony/.
[7] Selected References Documenting the Scientific
Advances in Adult Stem Cell ResearchCurrent Treatments Update
(Post-Natal or Tissue Stem Cells, Which Are Not Derived From Embryos, at http://www.lifeissues.org/cloningstemcell/adultstemsuccess.htm.
[8]
Dr. Prentice is a cell biologist. He is
serving as an affiliated scholar at the Center for Clinical Bioethics,
[9]
His most recent testimony took place on
[10]
Testimony of David A. Prentice, Subcommittee on Criminal Justice, Drug Policy, and Human
Resources, U.S. House Committee on Government Reform, July 17, 2001, available online at http://www.christianlegalsociety.com/clrfPages/advocacy/testimony_Prentice.php.
[11]
See Anne Harding, Harvard Has Human Cloning Plans: Institute Seeks Nod to Create Embryos Using Genes
From Patients With Diabetes, Parkinsons, The Scientist,
[12]
Ethics Committee, Am. Socy for Reproductive Med., Human somatic cell nuclear transfer (cloning), 74
Fertility & Sterility 873 (Nov. 2000).
[13] Cloning Human Beings: Report and Recommendations of the National Bioethics Advisory Commission (Rockville, MD: June 1997), p. 3.
[14] Human Cloning & Human Dignity: An Ethical Inquiry (July 2002) chapter 3 On Terminology, online at http://www.bioethics.gov/reports/cloningreport/terminology.html.
[15]
M.J. Friedrich, George Daley, MD, PhD, Talks About
the Clinical Promise of Stem Cell Research, 293 JAMA 787 (
[16]
Robert P. Lanza, Arthur L. Caplan, Lee M. Silver, Jose B. Cibelli, Michael D. West &
Ronald M. Green, The Ethical Validity of Using
Nuclear Transfer in Human Transplantation, 284 JAMA 3175 (Dec. 27, 2000).
[17]
Quoted in J. Spanogle, Transforming Life, The Baylor Line (Winter 2000), and p.30. An excellent summary of the secular authorities
acknowledging the scientific facts can be found online. See
testimony of Richard Doerflinger, U.S. Conference of Catholic Bishops, before the U.S.
Senate (
[18] Ethical Issues in Human Stem Cell Research (
[19] Human Cloning & Human Dignity at chapter 3.
[20]
K. Moore & T.V.N. Persaud, The Developing
Human: Clinically Oriented Embryology
(7th ed. Saunders: Phila. 2003), at 2, 3.
[21] Scientific and Medical Aspects of Human Reproductive
Cloning (Natl Academy Press 2002), p. 262.
[22]
Presidents Council on Bioethics, Frequently
Asked Questions About Human Cloning and the Councils Report on Human Cloning and
Human Dignity: An Ethical Inquiry,
available online at http://www.bioethics.gov/topics/cloning_faq.html.
[23]
Ella De Trizio & Christopher S. Brennan, The
Business of Human Embryonic Stem Cell Research and an International Analysis of Relevant
Laws, 7 Biolaw & Business (No. 4,
2004), at p. 5, available online at http://www.dechert.com/library/BusinessOfStemCellResearch.pdf.
[24] See statement online at http://www.macathconf.org/05bishops_cloning_web_statement.htm
[25]
Dr. Melton made this reference during the question and answer session of a conference
entitled Unlocking the Promise of Stem Cells sponsored by the Harvard Stem
Cell Institute on March 2, 2004. A recording
of the entire conference is available online at http://athome.harvard.edu/programs/psc/index.html, which contains a separate link to that r session.
[26]
Nobel Laureates Letter to President Bush,
[27] RAND Law & Health Research Brief: How Many Frozen Embryos Are Available for Research? (2002), available online at http://www.rand.org/publications/RB/RB9038/.
[28]
Andis Robeznieks, Ethics for Extra Embryos: Doctors Face A Dilemma, AmMedNews.com,
[29]
Coalition for the Advancement of Medical Research, Frequently
Asked Questions About SCNT (Therapeutic Cloning), available online at http://www.camradvocacy.org/fastaction/faqs.asp.
[30]
Judy Norsigian, Risks to Women in Embryo Cloning,
Boston Globe,
[31]
Statement of Judy Norsigian before the Senate Health, Education, Labor and Pensions
Committee, Mar. 5, 2002, available online at http://www.ourbodiesourselves.org/clone4.htm.
[32]
M.J. Friedrich, George Daley, MD, PhD, Talks About
the Clinical Promise of Stem Cell Research, 293 JAMA 787, 788 (
[33]
[34]
Suzanne Parisian, Memorandum to the Joint Committee on Economic Development and Emerging
Technologies,
[35]
Coalition for the Advancement of Medical Research, Frequently
Asked Questions About SCNT (Therapeutic Cloning), supra (emphasis in original).
[36]
From the coalitions website at http://www.camradvocacy.org/fastaction/.
[37]
The full membership list is on the coalitions website at http://www.camradvocacy.org/fastaction/members.asp.
[38]
For the official U.N. press announcement see
http://www.un.org/News/Press/docs/2005/ga10333.doc.htm.
A text of the Declaration can be found at http://www.macathconf.org/undeclarationoncloning.htm.
[39]
Testimony of Patricia Payne to the Commonwealth of Massachusetts Joint Committee on
Economic Development and Emerging Technologies Against SB 25An Act Promoting Stem
Cell Research, Feb. 16, 2005, available online at http://www.macathconf.org/05cloning_testimony_mrs_payne.htm.