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 |
巻 | 45 |
号 | 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