Journal
JOURNAL OF BIOLOGICAL CHEMISTRY
Volume 277, Issue 19, Pages 17002-17008Publisher
AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.M200521200
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Angiogenesis is the first regulatory step of tumor progression. Herein, we report on some findings that show that beta1,6-N-acetylglucosaminyltransferase V (GnT-V) functions as an inducer of angiogenesis that has a novel and completely different function from the original function of glycosyltransferase. A secreted type of GnT-V protein itself promoted angiogenesis in vitro and in vivo at physiological concentrations. The highly basic domain of GnT-V induced the release of fibroblast growth factor-2 from heparan sulfate proteoglycan on the cell surface and/or extracellular matrix, leading to angiogenesis. These findings provide some novel information on the relationship between GnT-V and tumor metastasis. The inhibition of GnT-V secretion or its expression represents a novel potential strategy for the inhibition of tumor angiogenesis.
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