Abstract
Within the microenvironment, Carcinoma-associated mesenchymal stem cells (Hospicells) are able to influence ovarian tumor development via, among others, the facilitation of angiogenesis in the tumor site allowing an accelerated tumor growth. We demonstrate the presence of a chemotactism between endothelial cells and Hospicells, and a cell line specific increased secretion of pro-angiogenic cytokines such as IL-6, IL-8 and VEGF from ovarian adenocarcinoma cells. Hospicells are also able to attract and activate macrophages to a M2 phenotype and allow them to secrete a huge quantity of pro-angiogenic cytokines, favorable to tumor progression of all the associated ovarian adenocarcinoma cells tested.
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