A Functional Link between Store-operated and TRPC Channels Revealed by the 3,5-Bis(trifluoromethyl)pyrazole Derivative, BTP2

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A functional link between store-operated and TRPC channels revealed by the 3,5-bis(trifluoromethyl)pyrazole derivative, BTP2.

The coupling between receptor-mediated Ca2+ store release and the activation of "store-operated" Ca2+ entry channels is an important but so far poorly understood mechanism. The transient receptor potential (TRP) superfamily of channels contains several members that may serve the function of store-operated channels (SOCs). The 3,5-bis(trifluoromethyl)pyrazole derivative, BTP2, is a recently desc...

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Store-operated calcium channels.

Store-operated calcium channels (SOCs) are a major pathway for calcium signaling in virtually all metozoan cells and serve a wide variety of functions ranging from gene expression, motility, and secretion to tissue and organ development and the immune response. SOCs are activated by the depletion of Ca(2+) from the endoplasmic reticulum (ER), triggered physiologically through stimulation of a d...

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Store-operated calcium channels.

In electrically nonexcitable cells, Ca(2+) influx is essential for regulating a host of kinetically distinct processes involving exocytosis, enzyme control, gene regulation, cell growth and proliferation, and apoptosis. The major Ca(2+) entry pathway in these cells is the store-operated one, in which the emptying of intracellular Ca(2+) stores activates Ca(2+) influx (store-operated Ca(2+) entr...

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The developing relationship between receptor-operated and store-operated calcium channels in smooth muscle.

Contraction of smooth muscle is initiated, and to a lesser extent maintained, by a rise in the concentration of free calcium in the cell cytoplasm ([Ca(2+)](i)). This activator calcium can originate from two intimately linked sources--the extracellular space and intracellular stores, most notably the sarcoplasmic reticulum. Smooth muscle contraction activated by excitatory neurotransmitters or ...

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Potent inhibition of store-operated Ca2+ influx and superoxide production in HL60 cells and polymorphonuclear neutrophils by the pyrazole derivative BTP2.

Store-operated calcium entry (SOCE) is a key regulator in the activation of leukocytes. 3,5-Bistrifluoromethyl pyrazole (BTP) derivatives have been identified recently as inhibitors of T lymphocyte activation. The inhibitory effect of one of these compounds, N-(4-[3,5-bis(trifluoromethyl)-1H-pyrazol-1-yl]phenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide (BTP2), appears to be a result of inhibiti...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 2005

ISSN: 0021-9258

DOI: 10.1074/jbc.m411797200