Mechanical regulation of oligodendrocyte morphology and maturation by the mechanosensor p130Cas

Takeshi Shimizu, Yasuyuki Osanai, Kenji F. Tanaka, Truc Quynh Thai, Manabu Abe, Rie Natsume, Kenji Sakimura, Kazuhiro Ikenaka

Research output: Contribution to journalArticle

Abstract

Oligodendrocytes (OLs) are myelinating cells of the central nervous system. Recent studies have shown that mechanical factors influence various cell properties. Mechanical stimulation can be transduced into intracellular biochemical signals through mechanosensors, such as integrin, p130Cas, talin and vinculin. However, the molecular mechanisms underlying the mechanical regulation of OLs by mechanosensors remain largely unknown. We found that morphology of OL was affected by knockdown of the mechanosensors p130Cas or talin1. Stretching of OL precursor cells induced the phosphorylation of p130Cas and talin-associated assembly of vinculin. Shear stress decreased the number of OL processes, whereas these effects were mechanically suppressed by dominant-negative (DN) p130Cas, but not by DN-talin1. To investigate the roles of p130Cas in post-natal OLs in vivo, we constructed a novel p130Cas knock-in mouse and found overexpression of p130Cas in vivo affected the number of mature OLs in the cortex. These results indicate that the mechanosensor p130Cas controls both OL morphogenesis and maturation. (Figure presented.).

Original languageEnglish
Pages (from-to)158-172
Number of pages15
JournalJournal of Neurochemistry
Volume150
Issue number2
DOIs
Publication statusPublished - 2019 Jul

Keywords

  • mechanical stress
  • mechanosensor
  • oligodendrocyte
  • p130Cas

ASJC Scopus subject areas

  • Biochemistry
  • Cellular and Molecular Neuroscience

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    Shimizu, T., Osanai, Y., Tanaka, K. F., Thai, T. Q., Abe, M., Natsume, R., Sakimura, K., & Ikenaka, K. (2019). Mechanical regulation of oligodendrocyte morphology and maturation by the mechanosensor p130Cas. Journal of Neurochemistry, 150(2), 158-172. https://doi.org/10.1111/jnc.14657