Dynamic interactions between E-cadherin and Ankyrin-G mediate epithelial cell polarity maintenance.

Dynamic interactions between E-cadherin and Ankyrin-G mediate epithelial cell polarity maintenance.
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DOI:
10.1038/s41467-023-42628-1
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发表时间:
2023-10-27
影响因子:
16.6
通讯作者:
Wang, Chao
Wang, Chao
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Kong, Chao;Qu, Xiaozhan;Liu, Mingming;Xu, Weiya;Chen, Da;Zhang, Yanshen;Zhang, Shan;Zhu, Feng;Liu, Zhenbang;Li, Jianchao;Huang, Chengdong;Wang, Chao

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钙粘蛋白是一种重要的细胞间粘附蛋白,介导上皮细胞侧膜中典型的钙粘蛋白-连环蛋白复合物的形成。锚蛋白-G(AnkG)是一种将膜蛋白连接到基于血影蛋白的细胞骨架的支架蛋白,与E-钙粘蛋白协调以维持上皮细胞极性。然而,这种复合物形成的分子机制及其与钙粘蛋白-连环蛋白复合物的关系仍然难以捉摸。在这里,我们报告说,AnkG采用混杂的方式封装三个离散的网站E-钙粘蛋白的同一地区,一个动态的机制,这是不同于典型的1:1摩尔比先前描述的其他AnkG或E-钙粘蛋白介导的复合物。此外,我们表明,AnkG结合缺陷的E-钙粘蛋白表现出有缺陷的积累在侧膜,并表明,破坏相互作用导致细胞极性故障。最后,我们证明了E-钙粘蛋白能够同时锚定到AnkG和β-连环蛋白,为锚定蛋白-血影蛋白复合物与钙粘蛋白-连环蛋白复合物的功能编排提供了机制上的见解。总的来说,我们的研究结果表明,E-钙粘蛋白和AnkG之间的复合物的形成是动态的,这使得维持上皮细胞的极性,通过确保忠实的靶向的粘附分子-支架蛋白复合物,从而提供必要的E-钙粘蛋白介导的复合物组装在细胞间连接的分子机制。细胞极性的维持依赖于与细胞骨架相连的粘附复合物。在这里,作者展示了E-钙粘蛋白-锚蛋白-G复合物形成的动态性质,并研究了其在上皮细胞极性维持中的功能作用。
E-cadherin is an essential cell‒cell adhesion protein that mediates canonical cadherin-catenin complex formation in epithelial lateral membranes. Ankyrin-G (AnkG), a scaffold protein linking membrane proteins to the spectrin-based cytoskeleton, coordinates with E-cadherin to maintain epithelial cell polarity. However, the molecular mechanisms governing this complex formation and its relationships with the cadherin-catenin complex remain elusive. Here, we report that AnkG employs a promiscuous manner to encapsulate three discrete sites of E-cadherin by the same region, a dynamic mechanism that is distinct from the canonical 1:1 molar ratio previously described for other AnkG or E-cadherin-mediated complexes. Moreover, we demonstrate that AnkG-binding-deficient E-cadherin exhibited defective accumulation at the lateral membranes and show that disruption of interactions resulted in cell polarity malfunction. Finally, we demonstrate that E-cadherin is capable of simultaneously anchoring to AnkG and β-catenin, providing mechanistic insights into the functional orchestration of the ankyrin-spectrin complex with the cadherin-catenin complex. Collectively, our results show that complex formation between E-cadherin and AnkG is dynamic, which enables the maintenance of epithelial cell polarity by ensuring faithful targeting of the adhesion molecule-scaffold protein complex, thus providing molecular mechanisms for essential E-cadherin-mediated complex assembly at cell‒cell junctions. The maintenance of cell polarity depends on adhesion complexes that tether to the cytoskeleton. Here the authors show the dynamic nature of E-cadherin–Ankyrin-G complex formation and investigate its functional role in epithelial cell polarity maintenance.
DOI: 10.1038/mp.2014.42
发表时间: 2015-03
影响因子: 11
作者:
Durak O;de Anda FC;Singh KK;Leussis MP;Petryshen TL;Sklar P;Tsai LH
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发表时间: 2018-01-01
影响因子: 1.6
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DOI: 10.1111/j.1582-4934.2009.00943.x
发表时间: 2009-11
影响因子: 5.3
作者:
Cunha SR;Mohler PJ
通讯作者: Mohler PJ
锚蛋白-G 与神经成束蛋白片段复合物的晶体结构揭示了轴突起始段完整性所需的结合机制
DOI: 10.1016/j.jbc.2022.102272
发表时间: 2022-09
影响因子: 4.8
作者:
He, Liping;Jiang, Wenli;Li, Jianchao;Wang, Chao
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DOI: 10.1038/nature18965
发表时间: 2016-09-08
期刊: NATURE
影响因子: 64.8
作者:
Huang, Chengdong;Rossi, Paolo;Saio, Tomohide;Kalodimos, Charalampos G.
通讯作者: Kalodimos, Charalampos G.