从单个成年干细胞生成前列腺
Kevin G Leong1, Bu-Er Wang, Leisa Johnson
1Department of Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA.
Nature
|October 24, 2008
概括
研究人员确定CD117是罕见的成年老鼠前列腺干细胞 (PSC) 的新型标记物. 这些PSC由特定的细胞表面标记物组合定义,可以再生功能性前列腺和自我更新,推进前列腺干细胞研究.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 干细胞生物学 干细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 前列腺干细胞 (PSC) 对于前列腺组织的维护和再生至关重要.
- 现有的PSC标记不具有特异性,导致难以分离纯PSC群体.
- 了解PSC对于解决前列腺瘤发生和开发再生疗法至关重要.
研究的目的:
- 识别成年小鼠前列腺干细胞 (PSC) 的新型,特定标记物.
- 描述已识别的PSC的再生和自我更新能力.
- 建立一个精确的表型来定义功能性小鼠前列腺干细胞.
主要方法:
- 利用细胞表面标记分析在成年小鼠前列腺中识别候选PSC.
- 在体内进行移植试验,以评估分离细胞的再生潜力.
- 研究了与前列腺再生和内置相关的标记物表达模式.
主要成果:
- 确定了CD117 (c-kit) 作为一种罕见的小鼠PSCs种群的新型标记物.
- 证明了单个PSCs的表型Lin(-)Sca-1(+) CD133(+) CD44(+) CD117(+) 可以在移植后产生一个完整的前列腺.
- 通过连续移植证实了CD117的长期自我更新能力.
- 观察到CD117表达在尿道附近局部化,并在割后上调.
结论:
- 林-Sca-1+CD133+CD44+CD117+) 现型定义了一个罕见的,多效的成年老鼠前列腺干细胞种群.
- CD117是识别和分离具有自我更新能力的功能性小鼠PSC的关键标志物.
- 这些发现为小鼠PSC提供了更精确的定义,有助于未来的前列腺再生和疾病研究.
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