4.7 Article

Oxidant Sensing by TRPM2 Inhibits Neutrophil Migration and Mitigates Inflammation

期刊

DEVELOPMENTAL CELL
卷 38, 期 5, 页码 453-462

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CELL PRESS
DOI: 10.1016/j.devcel.2016.07.014

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  1. NHLBI NIH HHS [R01 HL122157, P01 HL077806] Funding Source: Medline

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Blood neutrophils perform an essential host-defense function by directly migrating to bacterial invasion sites to kill bacteria. The mechanisms mediating the transition from the migratory to bactericidal phenotype remain elusive. Here, we demonstrate that TRPM2, a trp superfamily member, senses neutrophil-generated reactive oxygen species and restrains neutrophil migration. The inhibitory function of oxidant sensing by TRPM2 requires the oxidation of Cys549, which then induces TRMP2 binding to formyl peptide receptor 1 (FPR1) and subsequent FPR1 internalization and signaling inhibition. The oxidant sensing-induced termination of neutrophil migration at the site of infection permits a smooth transition to the subsequent microbial killing phase.

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