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From National Right
to Life
Today's
News & Views
January 8, 2007
Amniotic Stem Cells Show Amazing Promise by Dave Andrusko
It'd be hard to imagine a better front page
headline at this juncture than "Scientists See Potential In
Amniotic Stem Cells," which graced page one of today's
Washington Post. The subhead of Rick Weiss's story was equally
encouraging: "They Are Highly Versatile And Readily Available."
Since most TN&V readers keep up to date, you
already know that the new pro-abortion leadership in the House
and Senate is determined to pass legislation that would compel
taxpayers to pony up money to fund morally repugnant stem cell
research that requires the destruction of human embryos. The
House is expected to have it first go at this on Thursday.
The ideologues will not be fazed, but anyone
whose vision is not clouded over by bias will pause for
reflection when they read the research that was
described
yesterday in the journal Nature Biotechnology in its online
edition. Let me offer paragraphs from selected stories that give
you the flavor of the good news.
From today's Baltimore Sun by Karen Kaplan:
"Researchers
have found stem cells in human amniotic fluid that appear to
have many of the key benefits of embryonic stem cells while
avoiding their knottiest ethical, medical and logistical
drawbacks, according to a study published yesterday."
From yesterday's Associated Press story by Paul
Elias, updated this morning:
"Scientists reported Sunday they had found a
plentiful source of stem cells in the fluid that cushions babies
in the womb and produced a variety of tissue types from these
cells - sidestepping the controversy over destroying embryos for
research.
"Researchers at Wake Forest University and
Harvard University reported the stem cells they drew from
amniotic fluid donated by pregnant women hold much the same
promise as embryonic stem cells. They reported they were able to
extract the stem cells without harm to mother or fetus and turn
their discovery into several different tissue cell types,
including brain, liver and bone.
"'Our hope is that these cells will provide a
valuable resource for tissue repair and for engineered organs as
well,' said Dr. Anthony Atala, head of Wake Forest's
regenerative medicine institute and senior researcher on the
project."
From today's Post
"The cells, shed by the developing fetus and
easily retrieved during routine prenatal testing, are easier to
maintain in laboratory dishes than embryonic stem cells -- the
highly versatile cells that come from destroyed human embryos
and are at the center of a heated congressional debate that will
resume this week. …
"Moreover, because the cells are a genetic match to the
developing fetus, tissues grown from them in the laboratory will
not be rejected if they are used to treat birth defects in that
newborn, researchers said. Alternatively, the cells could be
frozen, providing a personalized tissue bank for use later in
life.
"The
newly analyzed fetal stem cells, scientists said, have many of
the advantages of both [embryonic and adult stem cells].
"'They
grow fast, as fast as embryonic stem cells, and they show great
pluripotentiality," meaning they can become many kinds of
tissues, said study leader Anthony Atala… 'But they remain
stable for years without forming tumors,' he added, something
that embryonic cells are not very good at."
From
Maggie Fox's story in Reuters:
"Writing in the journal Nature Biotechnology Atala and
colleagues described how they have spent seven years proving the
properties of these cells.
"'It
has been known for decades that both the placenta and amniotic
fluid contain multiple progenitor cell types from the developing
embryo, including fat, bone, and muscle,' Atala said.
"' We
asked the question, 'Is there a possibility that within this
cell population we can capture true stem cells?' The answer is
yes.'"
According to the Institute for Regenerative
Medicine's web page.
"Atala
and colleagues discovered a small number of stem cells in
amniotic fluid – estimated at 1 percent – that can give rise to
many of the specialized cell types found in the human body. The
scientists believe the newly discovered stem cells, which they
have named amniotic fluid-derived stem (AFS) cells, may
represent an intermediate stage between embryonic stem cells and
adult stem cells. They have markers consistent with both cell
types.
"'It
took this long to verify that we had a true stem cell," said
Atala, who began the work seven years ago. 'These cells are
capable of extensive self-renewal, a defining property of stem
cells. They also can be used to produce a broad range of cells
that may be valuable for therapy.'"
I contacted Dr. David Prentice, who is an
internationally recognized expert on stem cell research and
cloning and who seemingly has testified everywhere, and asked
for his opinion.
"'This
is exciting news from the scientists at Wake Forest," he
said. "These adult-type stem cells from amniotic fluid and
placenta (afterbirth) have all the positives scientists
claim to want from stem cells--flexibility to make different
tissues, easy and long-term growth in the lab, no
tumors--without the negatives associated with embryonic stem
cells."
He added, "There is no rational reason to
pursue embryo destruction for stem cells; those who still
want embryo research are interested in politics, not
patients."
That's the good news--unambiguously, unabashedly good news.
The bad news is that all this notwithstanding, proponents
insist they need to continue experimenting on stem cells
ripped from human embryos.
As
we have written many, many times in this space, virtually
every month another study rolls off the presses, verifying
once again that there is an almost infinite variety of
non-controversial sources of stem cells. That won't stop the
usual pro-embryonic stem cells activists from their
appointed rounds, but it sure offers all the rest plenty of
evidence they are wrong.
If
you have any questions or comments, please write Dave
Andrusko at
daveandrusko@hotmail.com
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