Thermosensitive TRPV4 channels mediate temperature-dependent microglia movement

Rei Nishimoto, Sandra Derouiche, Kei Eto, Aykut Deveci, Makiko Kashio, Yoshitaka Kimori, Yoshikazu Matsuoka, Hiroshi Morimatsu, Junichi Nabekura, Makoto Tominaga

Research output: Contribution to journalArticlepeer-review

Abstract

Microglia maintain central nervous system homeostasis by monitoring changes in their environment (resting state) and by taking protective actions to equilibrate such changes (activated state). These surveillance and protective roles both require constant movement of microglia. Interestingly, induced hypothermia can reduce microglia migration caused by ischemia, suggesting that microglia movement can be modulated by temperature. Although several ion channels and transporters are known to support microglia movement, the precise molecular mechanism that regulates temperature-dependent movement of microglia remains unclear. Some members of the transient receptor potential (TRP) channel superfamily exhibit thermosensitivity and thus are strong candidates for mediation of this phenomenon. Here, we demonstrate that mouse microglia exhibit temperature-dependent movement in vitro and in vivo that is mediated by TRPV4 channels within the physiological range of body temperature. Our findings may provide a basis for future research into the potential clinical application of temperature regulation to preserve cell function via manipulation of ion channel activity.

Original languageEnglish
Article numbere2012894118
JournalProceedings of the National Academy of Sciences of the United States of America
Volume118
Issue number17
DOIs
Publication statusPublished - Apr 27 2021

Keywords

  • Microglia
  • Movement
  • TRP channels
  • TRPV4

ASJC Scopus subject areas

  • General

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