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本帖最后由 bobo 于 2009-6-28 08:34 编辑 2 x9 {4 \' Q) t6 I8 B
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表观遗传学与干细胞——2009年亚洲生物高峰论坛录制(音频mp3)$ v1 K2 h; w4 D, I; g ]
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* L5 b4 x8 `9 j9 [! B6 CLaboratory of Stem Cell and Generative Biology, College of Life Sciences, Peking University, Beijing 100871, China., W. G. w* O. O3 T$ l! g
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Human pluripotent stem cells represent a potentially unlimited source of functional pancreatic endocrine lineage cells. We established a new highly efficient approach to induce human embryonic stem （ES） cells and induced pluripotent stem （iPS） cells to differentiate into mature insulin-producing cells in a chemical-defined culture system. The differentiated cells obtained by this approach comprised nearly 25% insulin-positive cells as assayed by flow cytometry analysis, which released insulin/C-peptide in response to glucose stimuli in a manner comparable to that of adult human islets. Most of these insulin-producing cells co-expressed mature beta cell-specific markers such as NKX6-1 and PDX1, indicating a similar gene expression pattern to adult islet beta cells in vivo. This work provides a new model to study the mechanism of human pancreatic specialization and maturation in vitro, and enhances the possibility of utilizing patient-specific iPS cells for the treatment of diabetes
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发表于 2009-6-28 08:19
发表于 2009-8-7 16:10
