alexa Inhibitory effects of arresten on bFGF-induced proliferation, migration, and matrix metalloproteinase-2 activation in mouse retinal endothelial cells.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Boosani CS, Nalabothula N, Sheibani N, Sudhakar A, Boosani CS, Nalabothula N, Sheibani N, Sudhakar A

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Abstract PURPOSE: The potential role of arresten (alpha1(IV)NC1) as an endogenous angiogenesis inhibitor in the prevention of bFGF mediated retinal angiogenesis and regulation of matrix metalloproteinase-2 activation has not been explored. METHODS: Mouse retinal endothelial cells (MREC) were cultured on type IV collagen and treated with basic fibroblast growth factor (bFGF) alone or in the presence of arresten at concentrations ranging from 1 to 10 microg/ml. The proliferation of MRECs were evaluated using 3(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) colorimetric assay, and bFGF stimulated endothelial cell migration was assessed using Boyden chamber. Expression of matrix metalloproteinase-2 (MMP-2) was assessed by reverse transcription polymerase chain reaction (RT-PCR) analysis using RNA isolated from MRECs. Secretion and activation of MMP-2 in arresten-treated conditioned MREC growth medium was determined by gelatin zymography and Western blotting. RESULTS: Different doses of bFGF induced MREC proliferation was significantly inhibited upon arresten treatment (P < 0.005). The bFGF-induced migration was significantly inhibited by arresten at 1 and 10 microg/ml concentrations (P < 0.01). The bFGF stimulated expression of MMP-2 mRNA and secretion of MMP-2 in MREC was not affected and interestingly activation of MMP-2 was suppressed by arresten in a dose and time dependent manner. CONCLUSIONS: Inhibitory effects of arresten on proliferation, migration and MMP-2 activation but not on expression and secretion of MMP-2 in MREC; this early work with arresten supports potential therapeutic action in retinal neovascularization dependent disorders.
This article was published in Curr Eye Res and referenced in Journal of Cancer Science & Therapy

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