Induced pluripotent stem (iPS) cells are altered to revert to a non-differentiated 'stem' state — the building blocks of most organs. The stem cells can then be used to repair human tissues or grow organs.
This month, a team of researchers at Osaka University declared an experimental treatment involving four patients suffering from corneal disease a success. The patients, who ranged in age from their 30s to 70s, received transplanted stem
It was the latest in a flurry of iPS-related announcements in Japan as the country tries to carve a niche in"regenerative medicine" by culturing healthy cells to replace diseased, injured or non-functioning ones. Yamanaka went into medicine after his own father contracted hepatitis C — a disease that became treatable 20 years later. Had iPS cells been available as a testing medium, he said, that treatment could have been developed much faster.
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