TRPM4 regulates migration of mast cells in mice

Takahiro Shimizu, Grzegorz Owsianik, Marc Freichel, Veit Flockerzi, Bernd Nilius*, Rudi Vennekens

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

86 被引用数 (Scopus)

抄録

We demonstrate here that the transient receptor potential melastatin subfamily channel, TRPM4, controls migration of bone marrow-derived mast cells (BMMCs), triggered by dinitrophenylated human serum albumin (DNP-HSA) or stem cell factor (SCF). Wild-type BMMCs migrate after stimulation with DNP-HSA or SCF whereas both stimuli do not induce migration in BMMCs derived from TRPM4 knockout mice (trpm4-/-). Mast cell migration is a Ca2+-dependent process, and TRPM4 likely controls this process by setting the intracellular Ca2+ level upon cell stimulation. Cell migration depends on filamentous actin (F-actin) rearrangement, since pretreatment with cytochalasin B, an inhibitor of F-actin formation, prevented both DNP-HSA- and SCF-induced migration in wild-type BMMC. Immunocytochemical experiments using fluorescence-conjugated phalloidin demonstrate a reduced level of F-actin formation in DNP-HSA-stimulated BMMCs from trpm4-/- mice. Thus, our results suggest that TRPM4 is critically involved in migration of BMMCs by regulation of Ca2+-dependent actin cytoskeleton rearrangements.

本文言語英語
ページ(範囲)226-232
ページ数7
ジャーナルCell Calcium
45
3
DOI
出版ステータス出版済み - 2009/03

ASJC Scopus 主題領域

  • 生理学
  • 分子生物学
  • 細胞生物学

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