Scientists believe they have made a giant leap forward in the quest to find an effective treatment for Type 1 diabetes. Using human embryonic stem cells as a starting point, experts have for the first time been able to produce human insulin-producing beta cells equivalent in almost every way to normally functioning beta cells in the kind of massive quantities needed for cell transplantation and pharmaceutical purposes. Doug Melton, Xander University professor at Harvard University, who led the work, said he hoped to have human transplantation trials using the cells under way within a few years. The stem cell-derived beta cells are currently undergoing trials in animal models, including non-human primates. Prof Melton, who is also co-director of the Harvard Stem Cell Institute, said the device being tested had so far protected beta cells implanted in mice from immune attack for many months. There have been previous reports of other labs deriving beta cell types from stem cells, he said. No other group has produced mature beta cells as suitable for use in patients. The biggest hurdle has been to get to glucose-sensing, insulin-secreting beta cells, and thats what our group has done. We are now just one pre-clinical step … Continue reading
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