纳米管介导Drosophila丸中的基干细胞信号传递
Mayu Inaba1, Michael Buszczak2, Yukiko M Yamashita3
11] Life Sciences Institute, Department of Cell and Developmental Biology Medical School, University of Michigan, Ann Arbor, Michigan 48109, USA [2] Howard Hughes Medical Institute, University of Michigan Ann Arbor, Michigan 48109, USA [3] Department of Molecular Biology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA.
Nature
|July 2, 2015
概括
在Drosophila雄性生殖系干细胞中新发现的基于微管的纳米管可以选择性地传递利基信号. 这种机制解释了干细胞如何接收自我更新线索,确保它们的身份并防止分化.
科学领域:
- 发育生物学 发展生物学
- 细胞生物学 细胞生物学
- 干细胞生物学 干细胞生物学
背景情况:
- 干细胞通过局部信号调节干细胞的身份.
- 精确的细胞机制限制了干细胞的利基信号传递尚未完全理解.
研究的目的:
- 研究负责短距离利基信号传递给多索菲拉雄性生殖系干细胞的细胞结构和机制.
主要方法:
- 利用Drosophila melanogaster模型研究生殖系干细胞的行为.
- 调查了基于微管的纳米管和内鞭状运输蛋白质的作用.
- 检查了骨基因蛋白 (BMP) 受体Tkv和DPP信号的局部化和功能.
主要成果:
- 确定了基于微管的新型纳米管,将生殖系干细胞连接到利基中心.
- 证明这些纳米管是干细胞的特异性,需要带有鞭状细胞内运输蛋白.
- 表明BMP受体Tkv局部化到纳米管中,对DPP信号激活至关重要.
- 发现DPP配体-Tkv相互作用对于纳米管的形成和干细胞的维护至关重要.
结论:
- 基于微管的纳米管代表了选择性利基干细胞通信的新机制.
- 这些结构有助于自我更新信号的有限范围,维持干细胞种群.
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