Nat Biotech:人类多能干细胞(iPS)成功诱导成星形胶质细胞

2011-12-17 MedSci原创 MedSci原创

<P style="TEXT-ALIGN: center"><IMG style="WIDTH: 529px; HEIGHT: 341px" class=inserted src="https://img.medsci.cn/webeditor/uploadfile/201112/20111217004225172.jpg" width=309 height=218></P> <P style="TEXT-ALIGN: center">人类多能干细胞,分化生成了星形胶质细胞<SPAN style="DISPLAY: none"> </SPAN></P> <P></P> <P>  复旦大学上海医学院解剖与组织胚胎学系***、著名干细胞专家张素春教授与美国威斯康星大学麦迪逊分校经长达5年多的合作研究,近期在一项干细胞研究中首次成功地利用人类多能干细胞,分化生成了星形胶质细胞,该成果对脑组织、脑器官的再生、修复和脑部疾病治疗有重要应用价值。该研究近日已发表在国际著名学术期刊《自然 &#8226; 生物技术》(Nature Biotechnology)杂志上(<a class="chan

人类多能干细胞,分化生成了星形胶质细胞

  复旦大学上海医学院解剖与组织胚胎学系***、著名干细胞专家张素春教授与美国威斯康星大学麦迪逊分校经长达5年多的合作研究,近期在一项干细胞研究中首次成功地利用人类多能干细胞,分化生成了星形胶质细胞,该成果对脑组织、脑器官的再生、修复和脑部疾病治疗有重要应用价值。该研究近日已发表在国际著名学术期刊《自然 • 生物技术》(Nature Biotechnology)杂志上(影响因子22.29)。

  人类多能干细胞可以分化成体内任意细胞,进而可以形成身体的各种组织和器官的研究,是当前干细胞研究的热点和焦点,而星形胶质细胞是胶质细胞中数量最多,具有重要功能的细胞,如血脑屏障等受到损伤,星形胶质细胞可以起到修复和再生的作用。尽管近年来科学家们利用多能干细胞已经成功培养和分化出心肌、神经、胰腺、骨等多种体细胞和不同组织,然而,如何直接将人胚多能干细胞“成功诱导”分化为对大脑修复、再生及脑部疾病治疗有重要作用的星形胶质细胞对研究人员来说,一直是可望而不可及的“梦想”。

  张素春教授领衔的科研团队在长期研究中,将人类多能干细胞分化为近似均一的不成熟星形胶质细胞群,结果发现并证实这些细胞具有与原代胶质细胞相似的基因表达、谷氨酸摄取与促进突触生成等功能特性。张素春他们将这些细胞移植到小鼠大脑中,进而发现这些细胞连接到脑毛细血管后,会转化为成熟的星形胶质细胞。《自然 • 生物技术》认为,这一突破性成果为研究大脑发育和功能,了解胶质细胞在疾病进程中的作用提供了新的细胞模型,并将推动神经疾病治疗新策略的开发。

  据悉,张素春教授1989年在原上海医科大学获得硕士学位,并留校工作;1992年赴美国留学,1996年获得加拿大萨斯卡其温大学生物学博士学位。后受聘于美国威斯康星大学,主要从事神经干细胞生物学和脑移植研究,在国际上首次利用人胚干细胞诱导出神经干细胞与运动神经元。2002年获美国麦迪逊市最佳科学家奖,2005年成为美国国会关于干细胞研究听证会证人。2006年受聘为复旦大学国家教育部第七批“***奖励计划特聘教授”。

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    2012-06-27 cathymary
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    2012-09-08 sunylz
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    2011-12-21 shock_melon
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    2012-03-20 liye789132251
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    2011-12-18 chengjn
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