論文

査読有り 国際誌
2013年11月25日

The association of microtubules with tight junctions is promoted by cingulin phosphorylation by AMPK.

The Journal of cell biology
  • Tomoki Yano
  • ,
  • Takeshi Matsui
  • ,
  • Atsushi Tamura
  • ,
  • Masami Uji
  • ,
  • Sachiko Tsukita

203
4
開始ページ
605
終了ページ
14
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1083/jcb.201304194
出版者・発行元
ROCKEFELLER UNIV PRESS

Epithelial cells characteristically have noncentrosomal microtubules that are arranged in the apicobasal direction. In this paper, we examined cell sheets formed by an epithelial (Eph4) cell line by structure illumination microscopy and found a previously not clearly described planar apical network of noncentrosomal microtubules (MTs) in which the sides of the MT bundles were associated with tight junctions (TJs). In a gel overlay assay with taxol-stabilized MTs, cingulin showed strong binding to MTs, and a domain analysis showed that this binding occurred through cingulin's N-terminal region. The association of planar apical MTs with TJs was compromised by cingulin knockdown (KD) or the expression of dephosphomimetic mutants of cingulin at its adenosine monophosphate-activated protein kinase (AMPK) target sites, whereas phosphorylation at these sites facilitated cingulin-tubulin binding. In addition, although wild-type colonies formed spheres in 3D culture, the cingulin KD cells had anisotropic shapes. These findings collectively suggest that the regulated cingulin-MT association has a specific role in TJ-related epithelial morphogenesis that is sensitive to metabolic homeostasis-related AMPK activity.

リンク情報
DOI
https://doi.org/10.1083/jcb.201304194
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/24385485
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3840929
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000327578700007&DestApp=WOS_CPL
ID情報
  • DOI : 10.1083/jcb.201304194
  • ISSN : 0021-9525
  • eISSN : 1540-8140
  • PubMed ID : 24385485
  • PubMed Central 記事ID : PMC3840929
  • Web of Science ID : WOS:000327578700007

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