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  • Title: A potential role for vascular endothelial growth factor-D as an autocrine growth factor for human breast carcinoma cells.
    Author: Akahane M, Akahane T, Shah A, Okajima E, Thorgeirsson UP.
    Journal: Anticancer Res; 2005; 25(2A):701-7. PubMed ID: 15868899.
    Abstract:
    BACKGROUND: Vascular endothelial growth factor-D (VEGF-D) binds and activates vascular endothelial growth factor receptor-2 (VEGFR-2), which signals for angiogenesis, and VEGFR-3, which signals for lymphangiogenesis. Besides endothelial cells, VEGFR-2 has been detected on malignant cells, including human breast carcinoma cells. MATERIALS AND METHODS: It was examined if ectopic expression of human VEGF-D affected growth of breast carcinoma cell lines in vitro and in vivo. RESULTS: VEGF-D overexpressing clonal MCF-7 and MDA-MB-231 cell lines displayed increased proliferative activities and upregulation of cyclins A, D1 and D3, compared to the vector control. Following subcutaneous inoculation of the MDA-MB-231 cells into nude mice, growth of the VEGF-D overexpressing cells was greatly accelerated. The tumor weight gain was accompanied by increased proliferative activity, cyclin A expression and microvascular density. CONCLUSIONS: These findings suggest that VEGF-D functions both as an autocrine growth factor and a stimulator of angiogenesis in breast cancer.
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