November 30, 2007
Finally conceding the truth about
embryonic stem cell research: “For all the hopes invested in it over
the last decade, embryonic stem cell research has moved slowly, with no
cures or major therapeutic discoveries in sight.”
Scientists Bypass Need
for Embryo to Get Stem Cells
by Gina Kolata
University
of California,
San
Francisco
Shinya
Yamanaka began research on mice that led to use of human
skin cells. |
Jeff Miller
James A.
Thomson and his colleagues did research at the University of
Wisconsin. |
“Two teams of scientists
reported yesterday that they had turned human skin cells into what
appear to be embryonic
stem cells
without having to make or destroy an embryo—a feat that could quell the
ethical debate troubling the field.
“All they had to do, the
scientists said, was add four genes. The genes reprogrammed the
chromosomes of the skin cells, making the cells into blank slates that
should be able to turn into any of the 220 cell types of the human body,
be it heart, brain, blood or bone. Until now, the only way to get such
human universal cells was to pluck them from a human embryo several days
after fertilization, destroying the embryo in the process....
“The reprogrammed skin cells
may yet prove to have subtle differences from embryonic stem cells that
come directly from human embryos, and the new method includes
potentially risky steps, like introducing a
cancer
gene. But stem cell researchers say they are confident that it will not
take long to perfect the method and that today’s drawbacks will prove to
be temporary....”
The New York Times – November 21, 2007 |
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or . Or visit The Humanitas Project web site at
www.humanitas.org.
|
Adding perspective to the big stem cell
breakthrough...
After Stem-Cell
Breakthrough, the Work Begins
by
Andrew Pollack
“If
stem cell
researchers were oil prospectors, it could be said that they struck a
gusher last week. But to realize the potential boundless riches they now
must figure out how to build refineries, pipelines and gas stations.
“Biologists were electrified
on Tuesday, when scientists in Japan and Wisconsin reported that they
could turn human skin cells into cells that behave like embryonic stem
cells, able to grow indefinitely and to potentially turn into any type
of tissue in the body.
“The discovery, if it holds
up, would decisively solve the raw material problem. It should provide
an unlimited supply of stem cells without the ethically controversial
embryo destruction and the restrictions on federal financing that have
impeded work on human embryonic cells.
“But scientists still face
the challenge of taking that abundant raw material and turning it into
useful medical treatments, like replacement tissue for damaged hearts
and brains. And that challenge will be roughly as daunting for the new
cells as it has been for the embryonic stem cells....”
The New York Times – November 27, 2007
Editor’s Note: For a brief
analysis of how this article signals a dramatic shift in the stem cell
debate, see Yuval Levin’s “The
Real Power of Stem Cells” in Commentary.
|
The
Humanitas Forum on Christianity
and Culture...
Recordings from the
recent Humanitas Forum with Peter Lawler are now available on the
Humanitas Project website as
mp3 downloads.
Listening to Biotechnology:
What It Tells Us about Our Souls
Peter Augustine Lawler, PhD
October 5-6, 2007
Belmont Church, Nashville, Tennessee
Selling Embryos, Buying Kidneys: The
Problem of Human Dignity in America
Longer Life, Perfect Health, Pleasant
Moods: How It Became a Sin to Be Normal
Individualism: The
Democratic “Heart Disease” and Why Christianity is the Cure
Peter Augustine Lawler is a member of the President’s Council on
Bioethics and Dana Professor and Chair of the Department of Government
and International Studies at Berry College. He is also executive editor
of the acclaimed journal Perspectives on Political Science and
the author of several books, including Postmodernism Rightly
Understood and Stuck with Virtue:
The American Individual and Our Biotechnological Future.
His latest book, published in July, 2007, is Homeless and at Home
in America: Evidence for the Dignity of the Human Soul in Our Time and
Place.
|
The challenge of developing stem cell
therapies for the brain...
Stem-cell Therapies For
Brain More Complicated Than Thought
“An MIT research team’s
latest finding suggests that stem cell therapies for the brain could be
much more complicated than previously thought.
“MIT scientists report that
adult stem cells produced in the brain are pre-programmed to make only
certain kinds of connections—making it impossible for a neural stem cell
originating in the brain to be transplanted to the spinal cord, for
instance, to take over functions for damaged cells.
“Some researchers hope to use
adult stem cells produced in the brain to replace neurons lost to damage
and diseases such as Alzheimer’s. The new study calls this into
question.
“‘It is wishful thinking to
hope that adult stem cells will be able to modify themselves so that
they can become other types of neurons lost to injury or disease,’ said
Carlos E. Lois, assistant professor of neuroscience in MIT’s Picower
Institute for Leaning and Memory....”
ScienceDaily – November 29, 2007
|
“The future of stem cell research is not
in cloning...”
Dolly Creator Prof Ian Wilmut
Shuns Cloning
Ian
Wilmut, the creator of Dolly the Sheep |
“The scientist who created
Dolly the sheep, a breakthrough that provoked headlines around the world
a decade ago, is to abandon the cloning technique he pioneered to create
her.
“Prof Ian Wilmut’s decision
to turn his back on ‘therapeutic cloning’, just days after US
researchers announced a breakthrough in the cloning of primates, will
send shockwaves through the scientific establishment.
“He and his team made
headlines around the world in 1997 when they unveiled Dolly, born July
of the year before....
“Prof Wilmut, who works at
Edinburgh University, believes a rival method pioneered in Japan has
better potential for making human embryonic cells which can be used to
grow a patient’s own cells and tissues for a vast range of treatments....
“His announcement could mark
the beginning of the end for therapeutic cloning, on which tens of
millions of pounds have been spent worldwide over the past decade....”
Telegraph – November 16, 2007
|
Economic and political tremors in states
that invested heavily in embryonic stem cell research...
States Assess
Breakthrough On Stem Cells
by Rick Weiss
Those With Big
Investments Vow to Continue Research
“Tuesday’s announcement that
scientists had found a noncontroversial way to make cells equivalent to
human embryonic stem cells did not just change the scientific and
ethical landscape. It generated economic and geopolitical tremors
through California, New York and about half a dozen other states that
have invested—in some cases heavily—in embryonic stem cell programs and
research centers.
“States have together
committed billions of dollars to fill the research vacuum left by the
Bush administration, which in 2001 declared embryonic stem cell research
largely off-limits for federal funding. Their hope has been to attract
the best scientists and build research infrastructures, giving them a
leg up on efforts to develop promising new stem cell therapies and
assuring them futures as biomedical and economic powerhouses.
“The possibility that
embryonic stem cells will be eclipsed by ‘ips’ cells—or ‘induced
pluripotent stem cells,’ ‘pluripotent’ meaning ‘able to become virtually
every kind of’—which can be created with relative ease and with abundant
funding from the
National Institutes of Health,
could undermine those state-level ambitions and bring an early end to a
novel experiment in scientific federalism, experts said....”
Washington Post – November 22, 2007
|
The big cloning story that disappeared
because of the breakthrough with stem cells in humans...
Cloning: A Giant Step
For the first time,
scientists have created dozens of cloned embryos from adult primates.
But what are the implications of this technical breakthrough for the
future of mankind?
“A technical breakthrough
has enabled scientists to create for the first time dozens of cloned
embryos from adult monkeys, raising the prospect of the same procedure
being used to make cloned human embryos.
“Attempts to clone human
embryos for research have been dogged by technical problems and
controversies over fraudulent research and questionable ethics. But the
new technique promises to revolutionise the efficiency by which
scientists can turn human eggs into cloned embryos.
“It is the first time that
scientists have been able to create viable cloned embryos from an adult
primate – in this case a 10-year-old male rhesus macaque monkey – and
they are scheduled to report their findings later this month.
“The scientists will also
demonstrate that they have been able to extract stem cells from some of
the cloned embryos and that they have managed to encourage these
embryonic cells to develop in the laboratory into mature heart cells and
brain neurons....”
The
Independent – November 12, 2007
|
“It’s scary to me as a physician that
some cosmetic companies are slipping in a prescription drug.”
Drug That Lengthens
Eyelashes Sets Off Flutter
Before
and after using Lumigan daily for 10 weeks |
“In the latest blurring of
the line between cosmetics and drugs, new products that promise to make
eyelashes look longer are causing a stir among physicians and regulators
because they contain ingredients that are the same or similar to those
in prescription drugs for an eye disease.
“Doctors and patients alike
have noticed that eyelash growth is a side effect of a glaucoma drug
called Lumigan, sold by California drug maker Allergan Inc. That
phenomenon has set off a race among cosmetics companies to create new
eyelash treatments that contain either bimatoprost—the active ingredient
in Lumigan—or other so-called prostaglandins found in glaucoma drugs....”
Wall Street Journal Oneline – November 19, 2007
|
Once you get past
the technology’s “gee-whiz factor,” what do you do when you learn that
you have a genetic variation at rs4712523?
23AndMe Will Decode
Your DNA for $1,000. Welcome to the Age of Genomics
by Thomas Goetz
“...I won’t reach 65 till 2033, but I
have long assumed that, as regards heart disease, my time will come. My
genes have predetermined it. To avoid my father’s surgery, or my
grandfather’s fate, I try to eat healthier than most, exercise more than
most, and never even consider smoking. This, I figure, is what it will
take for me to live past 65.
“Turns out that my odds are better
than I thought. My DNA isn’t pushing me toward heart disease—it’s
pulling me away. There are established genetic variations that
researchers associate with a higher risk for a heart attack, and my
genome doesn’t have any of those negative mutations; it has positive
mutations that actually reduce my risk. Like any American, I still have
a good chance of eventually developing heart disease. But when it comes
to an inherited risk, I take after my mother, not my father.
“Reading your genomic
profile—learning your predispositions for various diseases, odd traits,
and a talent or two—is something like going to a phantasmagorical family
reunion....
“The experience is simultaneously
unsettling, illuminating, and empowering. And now it’s something anyone
can have for about $1,000. This winter marks the birth of a new
industry: Companies will take a sample of your DNA, scan it, and tell
you about your genetic future, as well as your ancestral past....”
Wired –
November 17, 2007
Editor’s Note:
Another
article that discusses mail-order genetic tests was written by
Nicholas Wade for The New York Times: “Experts Advise a Grain of
Salt With Mail-Order Genomes, at $1,000 a Pop.”
|
A promising but risky therapy...and
questions about proper informed consent...
Targeted Genetics
Restarts Trial after Woman’s Death
by Ángel González
“The U.S. Food and Drug
Administration has allowed Targeted Genetics to restart its gene-therapy
trial for rheumatoid arthritis after an investigation indicated the
treatment did not contribute to the death of an Illinois woman in July.
“The trial was put on hold
when 36-year old Jolee Mohr died of a massive fungal infection weeks
after being injected with the second dose of a treatment designed to
fight arthritis by weakening the immune system in targeted areas.
“A post-mortem analysis by
University of Chicago researchers concluded that the Seattle-based
company’s drug didn’t wildly spread through the patient’s body, nor did
it significantly increase the immune suppression produced by another
anti-arthritis drug she was taking.
“The FDA’s decision clears
some concern about the future of gene therapy, a field considered
promising but risky. It also helps restore confidence in Target
Genetics’ clinical pipeline, which relies on gene-therapy products....”
The Seattle Times – November 26, 2007
|
“We need to improve 106-fold
or more—this would shrink the three billion person years it would take
to trace a cortical column down to about two years...”
A Wiring Diagram of the
Brain
by Emily Singer
The emerging field of
connectomics could help researchers decode the brain’s approach to
information processing.
Scientists
are developing new ways to study the tangled web of neurons
in the brain. This image shows a partial reconstruction of
the rabbit retina. |
“New technologies that allow
scientists to trace the fine wiring of the brain more accurately than
ever before could soon generate a complete wiring diagram—including
every tiny fiber and miniscule connection—of a piece of brain. Dubbed
connectomics, these maps could uncover how neural networks perform their
precise functions in the brain, and they could shed light on disorders
thought to originate from faulty wiring, such as autism and
schizophrenia....
“With an estimated 100 billion
neurons
and 100 trillion synapses in the human brain, creating an
all-encompassing map of even a small chunk is a daunting task. Using
standard methods, it would take roughly three billion person years to
generate the wiring diagram of a single cortical column, a narrow
functional unit of neurons in the cortex, estimates
Winfried Denk, a
neuroscientist at the Max Planck Institute for Medical Research in
Heidelberg, Germany.
“Denk, Seung, and their collaborators are now
developing sensitive new imaging techniques and machine-learning
algorithms to automate the construction process. They have already
generated a partial wiring diagram of part of the rabbit retina. But
they’ll need to make their technique a million times faster to finally
bring larger maps—like that of a cortical column—into the realm of
reality....”
November 19, 2007
|
“Boomer demands on the health care
system are unlike anything the nation has seen...they expect cures, not
just treatments...”
Aging Boomers: Me
Generation’s Health Concerns Expected to Propel Biotech
by Lisa Rosetta
“By 1989, a boomer’s median
net worth was $36,000, according to Paul Root Wolpe, president of the
American Society for Bioethics and Humanities. By 2001, it swelled to
$107,000. Home equity included, that number now is about $400,000.
“‘Never before has an older
generation controlled so much wealth of the country,’ he said. ‘We [at
50, Wolpe is a boomer himself] have the largest discretionary income of
all age groups of any time in American history. We control 60 percent of
the nation’s wealth....’
“The Greatest Generation,
those stalwart patriots who saw the ‘Roaring ’20s,’ suffered the Wall
Street crash of 1929 and fought valiantly during World War II, are now
grappling with old age and disease.
“They’re headed into the
winter of their lives.
“But their children, the
baby boomers, aren’t going to follow them.
“‘We have made the decision
that that is not going to happen to us,’ said Paul Root Wolpe, president
of the American Society for Bioethics and Humanities....”
The Salt Lake Tribune –
November 19, 2007
|
Worth considering...
Christopher Lasch and
the Limits of Hope
by Patrick J. Deneen
“...Seen by
elites as superstitious and unwarranted, religious belief is derided as
intellectual pabulum and false emotional security, while public policies
that arise from religious traditionalism (including limits upon divorce,
abortion, and efforts to protect the cohesion of local communities) are
viewed as irrational, inegalitarian, illiberal, arbitrary, and
oppressive.
“[Christopher] Lasch wrote with particular vehemence in disputing this
portrayal of religious belief, arguing that religion is profoundly
misunderstood by its liberal opponents, as well as by some religious
adherents. Religious belief is not to be understood as a source of
complacent self-righteousness or easygoing comfort and security, but
rather as a source of profound challenge. Lasch wrote that the standard
liberal caricature of religion
misses the
religious challenge to complacency, the heart and soul of faith. Instead
of discouraging moral inquiry, religious prompting can just as easily
stimulate it by calling attention to the disjunction between verbal
profession and practice, by insisting that a perfunctory observance of
prescribed rituals is not enough to ensure salvation, and by encouraging
believers at every step to question their own motivations. Far from
putting doubts to rest, religion has the effect of intensifying them. It
judges those who profess faith more harshly than it judges unbelievers.
It holds them up to a standard of conduct so demanding that many of them
inevitably fall short.... For those who take religion seriously, belief
is a burden, not a self-righteous claim to some privileged moral status.
Self-righteousness, indeed, may be more prevalent among skeptics than
believers. The spiritual discipline against self-righteousness is the
very essence of religion.
“Lasch’s
theological understanding, drawn from a variety of sources, but
prominently dependent upon a tradition of Augustinian Calvinism that
found an American voice in Jonathan Edwards, advances a complex
interplay of belief and doubt, faith and anxiety, affirmation and
renunciation. Belief in a beneficent divinity does not result in the
easygoing conclusion that God’s creation is aligned in humanity’s favor
or that His will exists in seamless accord with human desires. The
immediate and chastening consequence of such belief is the unavoidable
acknowledgment, in the words of Leszek Kolakowski, that ‘God owes us
nothing.’ Rather than suggesting humanity’s centrality in divine
creation or lending support to a view of humanity that endorses efforts
to conquer nature and render fortune and tragedy altogether tractable,
real religious belief forces the religious penitent to acknowledge human
dependence and weakness, and to regard temptations toward mastery as
forms of sinful and hubristic pride....”
Patrick J. Deneen is
Associate Professor of Government and holds the Markos and Eleni
Tsakopoulos-Kounalakis Chair in Hellenic Studies at Georgetown
University. “Christopher Lasch and the Limits of Hope” appeared in
the December 2004 issue of First Things and is available
online. |
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|