VEGFR-3/Flt-4 mediates proliferation and chemotaxis in glial precursor cells

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• 作者：S ; ra Kranich ; Kirsten Hattermann ; Aljona Specht ; Ralph Lucius ; Rolf Mentlein
• 关键词：Vascular endothelial growth factor ; Receptors ; Signal transduction ; Migration ; Brain ; Glial precursor cells
• 刊名：Neurochemistry International
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：55
• 期：8
• 页码：747-753
• 全文大小：875 K

文摘

Neuronal and vascular cells share common chemical signals. Vascular endothelial growth factor (VEGF)-C and -D and their receptor VEGFR-3/Flt-4 mediate lymphangiogenesis, but they occur also in the brain. Quantitative RT-PCR of mouse brain tissues and cultivated cells showed that the VEGFR-3 gene is highest transcribed in postnatal brain and in glial precursor cells whereas VEGF-C and -D are variably produced by different neuronal and glial cells. In neurospheres (neural stem cells) VEGFR-3 was induced by differentiation with platelet-derived growth factor (PDGF). In functional studies with an A2B5- and nestin-positive, O4-negative murine glial precursor cell line, VEGF-C and -D stimulated phosphorylation of the kinases Erk1/2; this signal transduction was inhibited by UO126. Both peptides induced the proliferation of glial precursor cells which could be inhibited by UO126. Furthermore, VEGF-D considerably enhanced their migration into an open space in a wound-healing assay. These results show that VEGF-C/-D together with its receptor VEGFR-3 provides an auto-/paracrine growth and chemotactic system for glial precursors in the developing brain.