osteopontin

[ ŏs′tē-ō-pŏntn ]

n.

A phosphorylated glycoprotein that is abundant in bone mineral matrix and accelerates bone regeneration and remodeling. It is also produced in other tissues and plays a role in the regulation and progression of many diseases, as by enhancing the invasive and proteolytic capabilities of tumor cells.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.