期刊
FEBS LETTERS
卷 588, 期 8, 页码 1416-1422出版社
WILEY
DOI: 10.1016/j.febslet.2014.03.009
关键词
Pannexin 1; Extracellular ATP; Inflammation; Resolution
资金
- NHLBI NIH HHS [P01 HL120840] Funding Source: Medline
- NIDDK NIH HHS [R01 DK096076] Funding Source: Medline
Extracellular ATP is an important signaling molecule throughout the inflammatory cascade, serving as a danger signal that causes activation of the inflammasome, enhancement of immune cell infiltration, and fine-tuning of several signaling cascades including those important for the resolution of inflammation. Recent studies demonstrated that ATP can be released from cells in a controlled manner through pannexin (Panx) channels. Panx1-mediated ATP release is involved in inflammasome activation and neutrophil/macrophage chemotaxis, activation of T cells, and a role for Panx1 in inducing and propagating inflammation has been demonstrated in various organs, including lung and the central and peripheral nervous system. The recognition and clearance of dying cells and debris from focal points of inflammation is critical in the resolution of inflammation, and Panx1-mediated ATP release from dying cells has been shown to recruit phagocytes. Moreover, extracellular ATP can be broken down by ectonucleotidases into ADP, AMP, and adenosine, which is critical in the resolution of inflammation. Together, Panx1, ATP, purinergic receptors, and ectonucleotidases contribute to important feedback loops during the inflammatory response, and thus represent promising candidates for new therapies. (c) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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