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J Cell Commun Signal. 2009 Dec;3(3-4):311-22. doi: 10.1007/s12079-009-0068-0. Epub 2009 Oct 2.

The role of osteopontin in inflammatory processes.

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1
Department of Bioengineering, University of Washington, Box 358056, Seattle, WA 98195 USA.

Abstract

Osteopontin (OPN) is a matricellular protein that mediates diverse biological functions. OPN is involved in normal physiological processes and is implicated in the pathogenesis of a variety of disease states, including atherosclerosis, glomerulonephritis, cancer, and several chronic inflammatory diseases. Through interactions with several integrins, OPN mediates cell migration, adhesion, and survival in many cell types. OPN also functions as a Th1 cytokine, promotes cell-mediated immune responses, and plays a role in chronic inflammatory and autoimmune diseases. Besides its function in inflammation, OPN is also a regulator of biomineralization and a potent inhibitor of vascular calcification.

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