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Glance at last issue:& s8 w! H& x8 Z4 Q
' k8 A* w, j8 i# k“Besides being slow and unreliable, the techniques [for developing iPS stem cells] were dangerous. Viruses were used to insert specific genes into the adult cells, which increased the cancer risk for the stem cells and thus for prospective patients receiving stem cell therapy. Without a safer technique, the promise of iPS cell research remained in the future.”--Matthew Hoberg.2 {+ W' ?& @- P9 [* v5 b P! B& W
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“Too many have given hESC [human embryonic stem cell] proponents what they want, rather than giving the public what they need. As a result the latest experiments are moving toward reproductive cloning instead of toward treatments that will actually help patients.”--Dr. Theresa Deisher of AVM Biotechnology.
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" c# Y; Y7 ^$ g1 P7 j8 ?+ b' j X“If you have many cells in a culture, they all look the same. But our new method senses all sorts of tiny differences in the shapes and movements of the cells, and uses these cues to predict what kind of cells it will divide into. We believe this method will be beneficial for one day taking cells from a patient, and then growing large amounts of the kind of cells that patient is in need of. This could enable many new and exciting types of medical treatments using stem cells.”--Roysam, professor of electrical, computer, and systems engineering at Rensselaer Polytechnic Institute. + y. b: Q) C! Y `! \+ C
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“The true frontiers of stem-cell research and treatment are being explored today in China. The government has fostered an environment there that is conducive to testing and perfecting radical new treatments that are already changing the face of medicine. We view that environment as crucial to EHSI’s stem-cell plans.”--Emerging Healthcare Solutions (PinkSheets:EHSI) President and CEO Cindy Morrissey.0 _* Y' M9 ]) X" o6 J# x2 I
' I% m$ w; _, Y( C1 D“This is the first study to demonstrate that human pluripotent stem cells in a petri dish can be instructed to efficiently form human tissue with three-dimensional architecture and cellular composition remarkably similar to intestinal tissue. The hope is that our ability to turn stem cells into intestinal tissue will eventually be therapeutically beneficial for people with diseases such as necrotizing enterocolitis, inflammatory bowel disease, and short bowel syndromes.”--Dr. James Wells, professor of developmental biology at Cincinnati Children's Hospital Medical Center.
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"Our findings indicate that cancer cells that resemble stem cells need not be part of the original tumor but rather may emerge during later stages of tumor development, facilitated by the loss of p53. The observed tumor heterogeneity is probably a combination of growing genomic instability and epigenetic instability associated with the acquisition of a stem cell-like phenotype."--postdoctoral researcher Benjamin T. Spike, Ph.D.
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"More stem-like tumors appear to be more aggressive, but they still may have residual capacity to differentiate into less aggressive cell types. If we can tap into this potential, we may be able to force these cells to differentiate to become less dangerous, which is an old idea that we need to seriously reconsider."--Geoffrey M. Wahl, Ph.D. at Salk Institute.8 c6 l: B1 R( } c/ a) S$ R
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* a8 ?( t" W" s% L4 kThis issue:! E( e1 o' Z6 u" Q
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0 b; O. r" \/ g3 W- DVideo news: l6 y- V. ~0 I; c# u" m( B3 ]
4 g$ f k# k. r6 S/ oDiscovering Stem Cells
( J' `1 S% R; f8 J$ Vhttp://www.dnalc.org/view/1082-Discovering-Stem-Cells-.html
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Will Embryonic Stem Cell Treatments Help NMO?
3 H! y8 \; \9 F0 Xhttp://www.guthyjacksonfoundatio ... -help-nmo-patients/# m z& x' Z' }* X2 a4 a1 @
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Stem cells being used to treat undereye bags: G. o& M2 s) [1 w9 x4 _/ Y6 [6 Z
http://abclocal.go.com/kgo/story ... alth&id=7870447 |
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发表于 2010-12-30 16:16
