Versican V2 isoform enhances angiogenesis by regulating endothelial cell activities and fibronectin expression

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Abstract

Versican is a proteoglycan expressed in the extracellular matrix, where it regulates a variety of cell activities and affects tumor development. With alternative splicing, there are four versican isoforms, denoted V0, V1, V2 and V3. The V2 isoform is highly expressed in the mature brain but its function in the mature brain has not yet been elucidated. Since brain tumors are among the most angiogenic of human tumors, we investigated whether or not the V2 isoform plays a role in angiogenesis and found that the glioblastoma cell line U87 stably transfected with V2 formed tumors containing extensive vasculature. Although the V2-expressing cells grew slowly, they survived well in serum-free medium. They also displayed high adhesive ability to endothelial cells and facilitated tube-like structure formation. Importantly, fibronectin was up-regulated by V2 and mediated V2 function. Thus, versican V2 could be a potential target for intervention of brain tumor angiogenesis. © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Yang, W., & Yee, A. J. (2013). Versican V2 isoform enhances angiogenesis by regulating endothelial cell activities and fibronectin expression. FEBS Letters, 587(2), 185–192. https://doi.org/10.1016/j.febslet.2012.11.023

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