Author : Brandt D. Whitehurst
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (144 download)
Book Synopsis VEGF-A Modulates Lymphangiogenic Mechanisms in an Orthotopic Model of Human Breast Carcinoma MDA-MB-231 by : Brandt D. Whitehurst
Download or read book VEGF-A Modulates Lymphangiogenic Mechanisms in an Orthotopic Model of Human Breast Carcinoma MDA-MB-231 written by Brandt D. Whitehurst and published by . This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metastasis significantly contributes to cancer mortality and is facilitated by lymphangiogenesis. Recent reports indicate that VEGF-A can modulate this process. We therefore evaluated VEGF-A neutralization as a potential anti-lymphangiogenic treatment in an orthotopic model of human breast cancer MDA-MB-231. Anti-VEGF-A therapy caused an 80% reduction in lymphatic vessel density and inhibited metastasis. VEGF-A neutralization decreased expression of VEGF-C by 28% in cultured MDA-MB 231 cells but not affect global VEGF-C expression in vivo. Immunofluorescent staining of lymphatic vessels demonstrated robust expression of VEGFR-3 on LYVE-1-positive vessels in control tumors. However, decreased and aberrant expression of VEGFR-3 was detected on lymphatic vessels in VEGF-A depleted tumors. RT-PCR analysis revealed three-fold decreased expression of Ang-2 in treated tumors which correlated with decreased VEGFR-3 transcript. The study demonstrates VEGF-A neutralization is a potential target for anti-metastatic therapy and identifies a novel mechanism for VEGF-A dependent modulation of lymphangiogenesis.