Ukr.Biochem.J. 2016; Volume 88, Issue 4, Jul-Aug, pp. 12-19

doi: https://doi.org/10.15407/ubj88.04.012

The mechanism of VEGF-mediated endothelial cells survival and proliferation in conditions of unfed-culture

01.09.2016   Uncategorized   No comments

T. V. Nikolaienko, V. V. Nikulina, D. V. Shelest, L. V. Garmanchuk

Educational and Scientific Centre “Institute of Biology”,
Taras Shevchenko National University of Kyiv, Ukraine;
e-mail: nikolaenkotetiana@yandex.ua

The mechanisms of VEGF-mediated effects on endothelial cells during cancer development and progression is not clear. In present study the biological effects of VEGF, VEGF-rich culture medium of peritoneal macrophages from mice with Lewis lung carcinoma were studied on MAEC cell line under conditions of unfed culture. We have shown that VEGF increased cell proliferation by the 5th day of culturing vs control and anti-VEGF-treated cells. This effect was associated with increased consumption of glucose and NO production by the 2nd day while decreased – on the 5th day of cell culturing. VEGF-mediated NO production was dependent on Ca2+ ions. Block of Ca2+-channels (LaCl3) had more pronounced inhibitory effect vs chelator of Ca2+ ions (EDTA).  It was shown that peritoneal macrophages are the main suppliers of VEGF at tumor angiogenesis, as evidenced by the data obtained on model system of endothelial cells synchronized in G0/G1 phase.

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