The keratin-binding protein Albatross regulates polarization of epithelial cells.
The keratin-binding protein Albatross regulates polarization of epithelial cells.
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角蛋白结合蛋白信天翁调节上皮细胞的极化。
DOI:
10.1083/jcb.200803133
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发表时间:
2008-10-06
期刊:
影响因子:
--
通讯作者:
Inagaki M
中科院分区:
文献类型:
--
作者:
Sugimoto M;Inoko A;Shiromizu T;Nakayama M;Zou P;Yonemura S;Hayashi Y;Izawa I;Sasoh M;Uji Y;Kaibuchi K;Kiyono T;Inagaki M
The keratin intermediate filament network is abundant in epithelial cells, but its function in the establishment and maintenance of cell polarity is unclear. Here, we show that Albatross complexes with Par3 to regulate formation of the apical junctional complex (AJC) and maintain lateral membrane identity. In nonpolarized epithelial cells, Albatross localizes with keratin filaments, whereas in polarized epithelial cells, Albatross is primarily localized in the vicinity of the AJC. Knockdown of Albatross in polarized cells causes a disappearance of key components of the AJC at cell–cell borders and keratin filament reorganization. Lateral proteins E-cadherin and desmoglein 2 were mislocalized even on the apical side. Although Albatross promotes localization of Par3 to the AJC, Par3 and ezrin are still retained at the apical surface in Albatross knockdown cells, which retain intact microvilli. Analysis of keratin-deficient epithelial cells revealed that keratins are required to stabilize the Albatross protein, thus promoting the formation of AJC. We propose that keratins and the keratin-binding protein Albatross are important for epithelial cell polarization.
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DOI:
10.1083/jcb.75.2.464
发表时间:
1977-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Takeichi M
通讯作者:
Takeichi M
影响因子:
64.8
作者:
Kim, S;Wong, P;Coulombe, PA
通讯作者:
Coulombe, PA
影响因子:
56.9
作者:
RODRIGUEZBOULAN, E;NELSON, WJ
通讯作者:
NELSON, WJ
影响因子:
2.9
作者:
Van Criekinge, W;van Gurp, M;Beyaert, R
通讯作者:
Beyaert, R
影响因子:
7.5
作者:
Jones, Jonathan C. R.;Green, Kathleen J.
通讯作者:
Green, Kathleen J.