Modulation of tumor induced angiogenesis in Ehrlich ascites tumor.
Copyright policy )Modulation of tumor induced angiogenesis in Ehrlich ascites tumor.
In this study the enzyme glutaminase, purified from the ascites fluid of ovarian cancer patients, was analysed for its antiangiogenic activity. Intraperitoneal administration of this enzyme reduces the number of tumor directed capillaries in solid and ascites tumor bearing Swiss mice induced by transplantation of Ehrlich ascites cells. The enzyme has a critical role in regulating the secretion of vascular endothelial growth factor (VEGF) from tumor cell and in turn tumor growth. Glutamine analogue like 6-diazo, 5- oxo L-norleucine (DON) is also found to be effective in regulating vascular endothelial growth factor (VEGF) secretion from tumor cells in vitro. Treatment with enzyme reduced serum VEGF levels of the tumor induced animals. In vitro VEGF production by EAC cells was reduced in a concentration dependent manner in presence of glutamine analogue.
Ovarian Neoplasms, Vascular Endothelial Growth Factor A, Time Factors, Dose-Response Relationship, Drug, Neovascularization, Pathologic, Glutamine, Body Weight, Diazooxonorleucine, Down-Regulation, Antineoplastic Agents, Gene Expression Regulation, Neoplastic, Mice, Glutaminase, Cell Line, Tumor, Neoplasms, Animals, Female, Carcinoma, Ehrlich Tumor, Neoplasm Transplantation, Cell Proliferation
Ovarian Neoplasms, Vascular Endothelial Growth Factor A, Time Factors, Dose-Response Relationship, Drug, Neovascularization, Pathologic, Glutamine, Body Weight, Diazooxonorleucine, Down-Regulation, Antineoplastic Agents, Gene Expression Regulation, Neoplastic, Mice, Glutaminase, Cell Line, Tumor, Neoplasms, Animals, Female, Carcinoma, Ehrlich Tumor, Neoplasm Transplantation, Cell Proliferation
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