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  • Versican isoform V1 regulates proliferation and migration in high-grade gliomas.

Versican isoform V1 regulates proliferation and migration in high-grade gliomas.

Journal of neuro-oncology (2014-07-30)
Julia Onken, Sylvia Moeckel, Petra Leukel, Verena Leidgens, Fusun Baumann, Ulrich Bogdahn, Arabel Vollmann-Zwerenz, Peter Hau
ABSTRACT

Versican is a large chondroitin sulphate proteoglycan produced by several tumor cell types, including high-grade gliomas. Increased expression of distinct versican isoforms in the extracellular matrix plays a role in tumor cell growth, adhesion and migration. We have recently shown that transforming growth factor (TGF-beta)2, an important modulator of glioma invasion, interacts with versican isoforms V0/V1 during malignant progression of glioma in vitro. However, the distinct subtype of versican that modulates these effects could not be specified. Here, we show that transient down-regulation of V1 by siRNA leads to a significant reduction of proliferation and migration in glioblastoma cell lines and glioblastoma progenitor cells, whereas tumor cell attachment stays unaffected. We conclude that V1 plays a predominant role in modulating central pathophysiological mechanisms as proliferation and migration in glioblastoma. Considering that TGF-beta is a master regulator of glioma pathophysiology, and that V0/1 is induced by TGF-beta2, therapeutic regulation of V1 may induce meaningful effects on glioma cell migration not only in vitro, but also in vivo.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Transforming Growth Factor-β2 human, TGF-β2, recombinant, expressed in NSO cells, powder, suitable for cell culture
Sigma-Aldrich
Transforming Growth Factor-β2 human, TGF-β2, recombinant, expressed in HEK 293 cells, HumanKine®, suitable for cell culture