由自组织的机能原体活动梯度引起的收缩性的空间模式是Drosophila胃化的基础
Gayatri Mundhe1,2, Valentin Dunsing-Eichenauer1,3, Jean-Marc Philippe1
1Aix Marseille Université, CNRS, IBDM UMR7288, Turing Center for Living Systems, Marseille, France.
Nature communications
|January 23, 2026
概括
一种涉及自我组织的分子梯度 (机械原体) 的新机制控制了Drosophila胃化过程中的细胞力学,通过一种依赖度的途径激活了组织侵入.
科学领域:
- 发展生物学 发展生物学
- 细胞力学 细胞力学
- 分子信号传输的方法
背景情况:
- 细胞在发育过程中的变形是空间组织的,但控制细胞机制的机制仍然不清楚.
- 分子梯度,称为"机械原体",在理论上被提出可以空间调节细胞力学.
- 了解细胞身份的空间控制及其与机制的联系对于发育过程至关重要.
研究的目的:
- 为了研究Drosophila胃化过程中细胞力学的空间控制.
- 为了确定在远距离激活actomyosin收缩性的基础上的分子机制.
- 阐明分子梯度在编排发育性组织形态发生过程中的作用.
主要方法:
- 使用Drosophila melanogaster作为研究胃流动的模型生物.
- 研究了GPCR配体Fog在激活actomyosin收缩性的作用.
- 分析了表面活动梯度的形成和动态.
- 研究了受体内细胞结核和整合素信号传导对GPCR调制的影响.
主要成果:
- 证明GPCR配体Fog以度依赖的方式起作用,在组织浸过程中激活了actomyosin收缩性.
- 显示雾形成了与表面结合的梯度,通过受体寡合化来招募Myosin-II.
- 发现这种活动梯度是自我更新的,受到受体内细胞分裂和整合素介导信号传递的影响.
结论:
- 这项研究提供了一个自我组织的机械原活性梯度的证据,可以控制Drosophila胃化过程中的细胞力学.
- 这种机制整合了化学,机械和几何线索,以驱动组织发育.
- 强调了空间调节分子梯度在发育过程中的重要性.
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