微小间粘附因子CDHR2的丧失会损害基底侧结合复合体在传输上皮质中的作用
Caroline S Cencer1, Kianna L Robinson1, Matthew J Tyska1
1Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37232.
Molecular biology of the cell
|September 18, 2024
概括
涉及CDHR2的微小膜间粘附复合体 (IMAC) 组织微小膜和链接细胞. 丢失CDHR2会破坏上皮结和屏障功能,暴露出IMACs.
科学领域:
- 细胞生物学 细胞生物学
- 皮质生物学 皮质生物学
- 分子细胞粘附分子细胞粘附
背景情况:
- 皮质细胞利用基于protocadherin的尖端粘附复合体来组织微型菌.
- CDHR2和CDHR5在微小尖形成了微小间粘附复合体 (IMAC),组织突出并最大限度地提高顶峰表面积.
- IMACs可以在邻近细胞的微小细胞之间形成 (过节性IMACs),可能会影响细胞-细胞结合完整性.
研究的目的:
- 研究CDHR2介导的IMACs在上皮细胞粘附和屏障功能中的作用.
- 为了确定跨接口IMAC是否会影响正规紧密并粘附于接口.
主要方法:
- 对缺乏CDHR2表达的细胞培养模型的分析.
- 对使用CDHR2淘汰的小鼠模型进行检查.
- 评估细胞和结合体形态,紧密和粘附结合元件水平,屏障功能和细胞移动性.
主要成果:
- CDHR2淘汰导致细胞和结位形态的扰乱.
- CDHR2的损失减少了紧和粘附结的关键组件.
- 缺少CDHR2会损害上皮质屏障功能,增加单细胞的运动性.
结论:
- 除了组织微生物外,IMACs还提供了细胞与细胞接触的关键层.
- 这种IMAC介导的接触功能与正规接口并行,以保持上皮质完整性.
- CDHR2对于IMAC的形成和随后的上皮质屏障功能和组织至关重要.
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