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06:50
Imaging Through the Pupal Case of Drosophila melanogaster
Published on: January 23, 2014
在Drosophila影像盘细胞中,一个短暂的细胞周期转变在多能性前
Anne Sustar1, Gerold Schubiger
1Department of Biology, University of Washington, Seattle, Washington 98195, USA.
Cell
|February 15, 2005
概括
细胞识别开关,称为转定性,在再生Drosophila影像盘中不涉及回到年轻的细胞周期. 相反,独特的细胞周期变化和更大的细胞大小先于转变,使发育可塑性成为可能.
科学领域:
- 发育生物学 发展生物学
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 在再生过程中,Drosophila影像盘表现出显著的可塑性,使细胞能够切换确定的身份.
- 细胞改变其发育命运的过程 - - 转定性对于这种可塑性至关重要,但其潜在机制尚不清楚.
- 以前的研究还没有完全阐明与转定结相关的细胞周期动态.
研究的目的:
- 为了研究经过转基因决定的多索菲拉细胞的细胞周期进展和细胞大小变化.
- 为了确定转定性是否涉及回归到更年轻的细胞周期状态.
- 为了确定细胞在再生过程中的发育性可塑性条件的因素.
主要方法:
- 开发一种体内系统,用于标记和监测Drosophila影像盘中转定性过程中的单个细胞.
- 精确追踪细胞增殖,细胞大小和分化.
- 在转定细胞中分析细胞周期动态和细胞大小.
主要成果:
- 在Drosophila影像盘中的转定性细胞不会恢复到较年轻的细胞周期.
- 在转判定之前,细胞周期进展发生了显著的变化.
- 这些细胞周期变化与正常发育过程中观察到的不同.
- 在转定性细胞中观察到细胞大小的增加.
结论:
- 发育性可塑性和转基因决定性不是由回归到较年轻的细胞周期驱动的.
- 一个独特的细胞周期进展,加上细胞大小的增加,似乎使细胞适应发育性可塑性.
- 这些发现为控制再生过程中命运变化的细胞机制提供了新的见解.
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