Skin Cancer Charts Graphs: 09/05/08

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From: HubMed - cancer <rssfwd@rssfwd.com>
Date: Tue, Sep 2, 2008 at 8:26 PM
Subject: Molecules in focus: Cytosolic phospholipase A(2)-alpha.
To: mesothelioma77@gmail.com

[1]Int J Biochem Cell Biol. 2008 Aug 8;
Niknami M, Patel M, Witting PK, Dong Q

Cytosolic phospholipase A(2)-alpha (cPLA(2)-alpha) cleaves its preferred substrate, arachidonic acid, at the sn-2 position of membrane glycerophospholipids. Stimulation of cells with agents that mobilize intracellular calcium and/or promote the phosphorylation of cPLA(2)-alpha leads to (i) translocation of the enzyme from cytosol to endoplasmic reticulum, Golgi apparatus and perinuclear membranes-where it associates with the arachidonic acid in close proximity to downstream eicosanoid-producing enzymes; and (ii) the change in configuration induced by phosphorylation increases the phospholipid binding affinity and arachidonic acid release. As a mediator of growth factors, cytokines, chemokines, and hormones that modulate survival and growth in various cell types, cPLA(2)-alpha has attracted considerable attention as a potential therapeutic target in control of inflammation and cancer. The importance of the enzyme may have been underestimated by the relatively normal phenotype in the enzyme knockout animals. A clear phenotype has emerged when these knockout animals are used as models of various diseases.

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Source: http://www.hubmed.org/display.cgi?uids=18761105
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