卡德林流转化皮质性成左右不对称的细胞分裂动态在Caenorhabditis elegans胚胎
Mi Jing Khor1, Yuxuan Rain Xiong1, Gaganpreet Sangha1
1Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T1Z3, Canada; Department of Zoology, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T1Z3, Canada.
Current biology : CB
|October 23, 2025
概括
细胞性在C. elegans发育过程中驱动左右不对称. 细胞接触处的状卡德林流动模式在分裂过程中打破对称性,引导发育左右不对称.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 左-右 (L-R) 非对称性在双边发展中至关重要.
- 阿克托米奥辛皮层的奇拉力学是L-R不对称性的保存驱动器.
- 与细胞L-R不对称性联系的皮质性机制尚未完全理解.
研究的目的:
- 为了研究在胚胎早期发育过程中,皮层性如何转化为细胞L-R不对称.
- 确定细胞分裂中对称性破坏的基础分子机制.
主要方法:
- 高分辨率的4D成像两细胞阶段的Caenorhabditis elegans胚胎.
- 分析经典卡德林 (HMR-1) 流动的动态.
- 对RhoA信号传递和细胞外基质外层参与的研究.
- 干素流动的扰乱及其与细胞动力环的相互作用.
主要成果:
- 在细胞与细胞接触时,皮层流产生了性阴林模式.
- 这种性卡德林模式与细胞动力收缩环不对称地相互作用.
- 相互作用选择性地减缓了右侧的环闭,建立了L-R不对称性.
- 干扰卡德林流动消除了C. elegans中最早可检测到的L-R不对称性.
结论:
- 皮层流依赖性合粘附模式的形成是C. elegans细胞分裂中L-R对称性破裂的关键机制.
- 卡德林流转化皮层性成不对称的细胞分裂动态.
- 这种机制为我们提供了一种新的理解,即如何在发育过程中建立L-R不对称性.
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