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...type of cell - from skin to nerve to muscle. But researchers questioned whether the new stem cells would behave as predictably or as safely as embryonic stem cells, or whether iPS would consistently yield usable cells. "Our work shows that the original method developed by Yamanaka works great," says Eggan...

Author: /time Magazine | Title: Scientists Reach Stem Cell Milestone | 7/31/2008 | See Source »

Researchers also questioned whether iPS would work with delicate cells from older people or with cells taken from patients with disease (Yamanaka used skin cells from healthy middle-aged people in his study). Eggan and Henderson tackled both issues at once, by working with cells from two siblings, ages 82 and 89, who both had ALS. It turned out that generating iPS cells from older patients proved no more difficult than growing them from younger ones, says Eggan. "This study puts those issues definitively to rest," he says. "It opens the door to being able to make patient-specific stem...

Author: /time Magazine | Title: Scientists Reach Stem Cell Milestone | 7/31/2008 | See Source »

...Eggan's group has successfully turned stem cells into motor neurons, the cells that connect the spinal cord to the body's muscles and which degenerate in ALS. But researchers have not been able to prove that these cells will be clinically useful - that is, whether the new nerve cells will work as well as healthy ones in the spinal cord of a patient. Testing the viability of cells made from iPS stem cells is still a long way off, mostly because iPS requires the use of viruses to deliver the time-reversing genes into adult cells - that works...

Author: /time Magazine | Title: Scientists Reach Stem Cell Milestone | 7/31/2008 | See Source »

...answers to those questions, says Eggan, may come in a matter of "months, not years." It's still unclear whether the new iPS nerve cells can live up to the gold standard of cells created from human embryonic stem cells, but Eggan, Henderson and their colleagues are confident that their current achievement brings stem-cell science one step closer to the original and ultimate goal: cures for diseases such as ALS, Alzheimer's and diabetes...

Author: /time Magazine | Title: Scientists Reach Stem Cell Milestone | 7/31/2008 | See Source »

...study, which was co-authored by Henderson and Harvard professor Kevin C. Eggan, was published Thursday in the journal Science...

Author: By Clifford M. Marks, CRIMSON STAFF WRITER | Title: Harvard, Columbia Researchers Make Stem Cell Breakthrough | 7/31/2008 | See Source »

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