© 2004 by European Society of Cardiology
Copyright © 2004, European Society of Cardiology
Matricellular proteins in the heart: possible role during stress and remodeling
Experimental and Molecular Cardiology/CARIM, Department of Cardiology, University of Maastricht, P. Debyelaan 25 PO Box 5800, 6202 AZ Maastricht, Maastricht, The Netherlands
* Corresponding author. Tel.: +31-43-3882949; fax: +31-43-3875104. E-mail address: s.heymans{at}cardio.unimaas.nl
Matricellular proteins are extracellular matrix proteins that modulate cell–matrix interactions and cell function, and do not seem to have a direct structural role. The family includes tenascin-C (TN-C), tenascin-X (TN-X), osteonectin, osteopontin, thrombospondin-1 (TSP1) and thrombospondin-2 (TSP2). Expression of matricellular proteins is high during embryogenesis, but almost absent during normal postnatal life. Interestingly, it re-appears in response to injury.
Left ventricular remodeling is a complicated process that occurs in the stressed heart, and is still not completely understood. Several members of the matricellular protein family, like tenascin-C, osteopontin, and osteonectin are up-regulated after cardiac injury. Therefore, this group of proteins may have crucial functions in the heart coping with stress. This review will focus on the expression, regulation and function of these matricellular proteins, and will discuss the crucial functions that these proteins might exert during remodeling of the stressed heart.
KEYWORDS Glycoproteins; Matricellular proteins; Remodelling; Extracellular matrix; Matrix metalloproteinases
Time for primary review 28 days
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