It will never work. They don't understand the genetic programming of these cells to develop into an independent body. Cells from someone else's fetus don't belong in your body.
Posted on 02/17/2009 7:26:02 PM PST by autumnraine
WASHINGTON (AP) - A family desperate to save a child from a lethal brain disease sought highly experimental injections of fetal stem cells—injections that triggered tumors in the boy's brain and spinal cord, Israeli scientists reported Tuesday. Scientists are furiously trying to harness different types of stem cells—the building blocks for other cells in the body—to regrow damaged tissues and thus treat devastating diseases. But for all the promise, researchers have long warned that they must learn to control newly injected stem cells so they don't grow where they shouldn't, and small studies in people are only just beginning.
Tuesday's report in the journal PLoS Medicine is the first documented case of a human brain tumor—albeit a benign, slow-growing one—after fetal stem cell therapy, and hammers home the need for careful research. The journal is published by the Public Library of Science.
"Patients, please beware," said Dr. John Gearhart, a stem cell scientist at the University of Pennsylvania who wasn't involved in the Israeli boy's care but who sees similarly desperate U.S. patients head abroad to clinics that offer unproven stem cell injections.
"Cells are not drugs. They can misbehave in so many different ways, it just is going to take a good deal of time" to prove how best to pursue the potential therapy, Gearhart said.
(Excerpt) Read more at breitbart.com ...
It will never work. They don't understand the genetic programming of these cells to develop into an independent body. Cells from someone else's fetus don't belong in your body.
The biopsied tumor was diagnosed as a glioneuronal neoplasm. We compared the tumor cells and the patient's peripheral blood cells by fluorescent in situ hybridization using X and Y chromosome probes, by PCR for the amelogenin gene X- and Y-specific alleles, by MassArray for the ATM patient specific mutation and for several SNPs, by PCR for polymorphic microsatellites, and by human leukocyte antigen (HLA) typing. Molecular and cytogenetic studies showed that the tumor was of nonhost origin suggesting it was derived from the transplanted neural stem cells. Microsatellite and HLA analysis demonstrated that the tumor is derived from at least two donors.
Evaluation of progenitor cell cultures from human embryos for neurotransplantation
Human neural stem cells (HNSCs) are used in studies of neural development and differentiation, and are regarded as an alternative source of tissue for neural transplantation in degenerative diseases. Selection and standardization of HNSC samples is an important task in research and clinical approaches. We evaluated embryonal brain matter obtained from human 8–12-week-old fetuses by means of flow cytometry on a panel including...
I haven't read the whole PLOS paper.
Some
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