在Xenopus gastrula中,细胞接触和细胞周基质的细胞周基质
Olivia Luu1, Debanjan Barua1, Rudolf Winklbauer1
1Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada.
PloS one
|February 12, 2024
概括
在Xenopus chordamesoderm中,细胞对细胞的粘附依赖于周细胞基质,而不仅仅是干蛋白. 降低粘附因子会改变接触宽度和矩阵分布,影响胃流动期间的细胞运动.
科学领域:
- 发育生物学 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:
- 收延伸是Xenopus的一个关键的胃化运动.
- 细胞与细胞的接触对组织形态发生至关重要.
- 周细胞基质在冠状腺膜粘附中的作用尚未完全理解.
研究的目的:
- 在Xenopus chordamesoderm中研究细胞与细胞接触的一般特征.
- 了解粘附因子和周细胞矩阵对细胞粘附的贡献.
- 在实验数据的基础上建模皮细胞粘附.
主要方法:
- 粘附因子的消耗:C-cadherin,Syndecan-4,纤维菌素和氨酸.
- 分析细胞接触宽度光谱和接触角度.
- La3+染色用于可视化细胞周基质.
- 围细胞矩阵部署的定量描述.
主要成果:
- 细胞-细胞粘附在chordamesoderm是由周细胞基质介导的,具有独特的La3+染色结构 (宽10-20纳米).
- 粘附因子的减少减少了细胞接触的丰富性,但保持了相对的粘附性.
- 粘度与接触宽度成比例增加,这表明交叉数字的矩阵单位.
- 减少接触丰度与矩阵积累的间隙和某些接触类型的损失相关.
结论:
- 周细胞基质在Xenopus chordamesoderm细胞粘附中发挥着重要作用.
- 粘附因子耗尽会影响矩阵分布和细胞接触动态.
- 一个涉及跨数字化的细胞周矩阵单元的模型解释了皮质粘附.
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