液压破裂和活跃粗化将小鼠胚囊的光度定位
Julien G Dumortier1, Mathieu Le Verge-Serandour2, Anna Francesca Tortorelli1
1Institut Curie, PSL Research University, Sorbonne Université, CNRS UMR3215, INSERM U934, Paris, France.
Science (New York, N.Y.)
|August 3, 2019
概括
在小鼠胚胎中填充液体的布拉斯托科尔的形成涉及细胞接触的液压破裂,产生融合的微光. 这一过程类似于泡粗化,最终决定了胚胎的第一个对称轴.
科学领域:
- 发育生物学
- 细胞生物学
- 生物物理
背景情况:
- 在哺乳动物的早期发育中,形成囊胚是至关重要的.
- 控制布拉斯托科尔光的形成和精确定位的机制在很大程度上是未知的.
研究的目的:
- 阐明驱动布拉斯托科尔形成和光线定位的生物物理机制.
- 研究液压力和细胞收缩在光线发育中的作用.
主要方法:
- 使用奇米突变小鼠胚胎来操纵细胞过程.
- 应用流体动力学原理和奥斯瓦尔德成熟以模拟光线粗.
- 观察并量化了细胞接触和微光动态的断裂.
主要成果:
- 确定压力流体积累是细胞接触器分裂成众多微光的驱动因素.
- 通过类似于奥斯瓦尔德成熟的过程证明微光线合并为单一的主导光线.
- 通过控制液压裂变和微光变,成功操纵光位置.
结论:
- 细胞与细胞接触的液压破裂引发了血栓的形成.
- 微光线的收缩定向粗化随后塑造了光线并设置了胚胎轴.
- 这项研究揭示了在哺乳动物胚胎中建立第一个对称轴的新机制.
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