Phosphoinositide regulation of non-canonical transient receptor potential channels.
Transient receptor potential (TRP) channels are involved in a wide range of physiological processes, and characterized by diverse activation mechanisms. Phosphoinositides, especially phosphatidylinositol 4,5-bisphosphate [PIP(2), or PtdIns(4,5)P(2)] recently emerged as regulators of many TRP channels. Several TRP channels require PIP(2) for activity, and depletion of the lipid inhibits them. For some TRP channels, however, phosphoinositide regulation seems more complex, both activating and inhibitory effects have been reported. This review will discuss phosphoinositide regulation of members of the TRPM (Melastatin), TRPV (Vanilloid), TRPA (Ankyrin) and TRPP (Polycystin) families. Lipid regulation of TRPC (Canonical) channels is discussed elsewhere in this volume.
Rohacs
Tibor
T
UMDNJ - New Jersey Medical School, Newark, NJ, USA. tibor.rohacs@umdnj.edu
D002118:Calcium / Q000378:metabolism; D019269:Phosphatidylinositol 4,5-Diphosphate / Q000378:metabolism*; D010716:Phosphatidylinositols / Q000378:metabolism; D050052:TRPC Cation Channels / Q000378:metabolism; D050053:TRPM Cation Channels / Q000378:metabolism; D050396:TRPP Cation Channels / Q000378:metabolism; D050916:TRPV Cation Channels / Q000378:metabolism; D050051:Transient Receptor Potential Channels / Q000378:metabolism*
D019269:Phosphatidylinositol 4,5-Diphosphate; D010716:Phosphatidylinositols; D050052:TRPC Cation Channels; D050053:TRPM Cation Channels; D050396:TRPP Cation Channels; D050916:TRPV Cation Channels; D050051:Transient Receptor Potential Channels; D002118:Calcium