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Semin Cell Dev Biol. 2006 Dec;17(6):654-66. Epub 2006 Nov 21.

TRPM channels, calcium and redox sensors during innate immune responses.

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Columbus Children's Research Institute, Center for Microbial Pathogenesis, The Ohio State University, Columbus, OH 43205, USA.


Melastatin-related TRPM ion channels have emerged as novel therapeutic targets due to their potential ability to modulate the function and fate of immune cells during inflammation, innate, and adaptive immunity. Four family members, TRPM1, TRPM2, TRPM4 and TRPM7 have a strong presence in the immune system. TRPM channels regulate ion-homeostasis by sensing cellular redox status and cytoplasmic calcium levels. TRPM2 for example, is highly expressed in phagocytes. This channel is activated by intracellular ADP-ribose upon exposure to oxidative stress and induces cell death. Here we will review the functional links between TRPM-mediated ion conductance, chemotaxis, apoptosis, and innate immunity.

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