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8/6/01 6:32 AM ET
The debate over whether the federal
government should help fund stem cell research has scientists and pro-life
groups in a fierce struggle. Little has been said, meanwhile, about the
potential markets that stem cell medical procedures could spawn.
Rochelle Seide, a partner and biotechnology
patent attorney with the law firm of Baker & Botts in New York City,
describes what stem cells are and what potential uses they have. Seide
also tells Daily Interview why the big pharmaceutical companies have yet
to become actively involved in stem cell research, and why the major players
continue to be small biotechnology companies.
TSC: What are the various benefits
of stem cells? There have been reports that they could lead to cures for
a wide variety of diseases, including Parkinson's, Alzheimer's, diabetes,
heart disease, kidney disease, liver failure, spinal cord injury and multiple
sclerosis.
Seide: They haven't been shown to
do anything yet. This is only what's been postulated as their potential.
We don't have [pill] treatments for diabetes. We haven't found the magic
pill for a lot of treatments, certainly Parkinson's, Alzheimer's or anything
else. These devastating diseases cost the country millions and billions
of dollars. The potential of regenerative medicine is enormous.
TSC: What is a stem cell?
Seide: Stem cells are basic cells
from which other cells are derived. There are different kinds of stem cells.
Embryonic stem cells have caused the debate that's been raging the past
couple of months. These are derived from early stage embryos, before the
embryo's cells begin to divide, and may number only about 100 cells. Those
kinds of stem cells are what's known as totipotent, meaning they can become
any other kind of cells.
Other kinds of stem cells come from
later in development, from sources where cells are replenishing themselves,
such as fetal stem cells, bone marrow stem cells, blood stem cells or liver
stem cells. These have the ability to become other things but they are
not totipotent. They are what's known as pluripotent.
TSC: Since they can become any other
kind of cell, are embryonic stem cells the most desirable to scientists?
Seide: Although embryonic stem cells
are, in a sense, a blank slate, they can't serve every use. Most people
think that because embryonic stem cells can differentiate into a wide variety
of tissue that they may be the most beneficial. But bone marrow stem cells,
for instance, are used to treat cancer patients. So, I think all of the
stem cell research should go forward. All of these different types of stem
cells have uses.
TSC: Are any labs now cloning stem
cells?
Seide: A couple of companies, including
the Jones Institute for Reproductive Medicine, have talked about cloning
embryos from which they could derive stem cells for therapeutic purposes,
not for reproduction.
I don't totally agree with doing
therapeutic cloning to create stem cells, but I believe that stem cell
research should go forward. There are a lot of embryos that were created
for in vitro fertilization and nothing's going to be done with them. They're
sitting frozen in canisters, and in most cases these embryos are going
to be discarded.
TSC: Why has stem cell research become
such a hot topic now?
Seide: The Clinton administration
was going to allow [the] National Institutes of Health to fund research
on stem cells derived from embryos to be discarded. Clinton had asked The
National Bioethics Advisory Commission to investigate the ethics of such
research, and they had concluded that human stem cell research is ethical.
NIH had set a deadline of March or April for researchers to submit proposals.
This deadline, along with the current administration, triggered this raging
debate. Although there are a number of people in Congress right now who
are pro-life and who are pro stem cell research, a lot of other people
will not separate this from the abortion issue.
TSC: How far advanced is stem cell
research at this point and how much would you estimate has been invested
in this research so far?
Seide: It's not that far advanced.
Dr. Thomson of the University of Wisconsin removed the first human stem
cell from an embryo only a few years ago, in 1997. Now much of the research
is taking place abroad. Japan has just passed regulations to go forward
with cloning. And so has Europe. If the United States continues to be embroiled
in this debate, it will be left behind. This research will take place in
the rest of the world.
There are a few U.S. companies involved
in this right now, the two most notable of which are Geron (GERN:Nasdaq
- news - commentary) and Advanced Tissue Sciences (ATIS:Nasdaq - news -
commentary). All of the important research is taking place in the private
sector. I would guess a couple of hundred million has been invested, but
not yet billions. This research is in its embryonic stage.
TSC: How big could this market potentially
become and when might we see results?
Seide: It could be huge. Biotechnology
has tremendous potential, and scientists are already reporting results
in the laboratory. The potential benefits of stem cell research are tremendously
exciting. But think of how long it takes for a drug to get to market. It
takes 10, 12 years for a single drug to get to market. Prozac took 10 years
to come to market.
TSC: Are any of the big pharmaceutical
companies involved in stem cell research right now, and if not, why?
Seide: No. They may be funding research,
but none of them are involved directly. Big pharmaceuticals are interested
in making small molecule [products]. They want product that they can sell
in pill form in large quantity. Stem cell research for a patient with diabetes
might be a one-shot deal. It's a different philosophy. The big pharmaceuticals
are interested in biotechnology but because it's such a research-intensive
process, at this point, they are only willing to license the biotechnology
being developed at smaller companies.
TSC: Do you believe that this research
would be greatly advanced if the government did decide to fund it?
Seide: If NIH or other federal agencies
could provide the funding, it would help significantly because there would
be more places doing the research, there would be more openness and there
would be some oversight, which we don't have now. But it's a double-edged
sword. If you get public funding, then the government will be able to regulate
this.
By Lee Barney
Staff Reporter