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Endometrial adenocarcinoma, originating from the glandular epithelial cells of the uterine endometrial lining, is one of the most prevalent cancers amongst women in the Western world. The prostaglandin F2α (PGF2α) receptor (FP) is upregulated in endometrial adenocarcinoma. A previous microarray analysis of endometrial adenocarcinoma cells (Ishikawa) identified numerous targets of PGF2α-FP signalling including angiogenic factors, VEGF-A, FGF-2, CXCL1 and CXCL8 and antiangiogenic factors ADAMTS1. The regulation of VEGF-A, FGF-2, CXCL1 and CXCL8 was confirmed by previous studies using an in vitro model system, of Ishikawa cells stably expressing the FP receptor to levels observed in cancer (FPS cells). In this thesis, ADAMTS1 expression was found to be upregulated in endometrial adenocarcinoma samples compared to normal endometrium. Using FPS cells, ADAMTS1 expression was regulated in an extracellular signal regulated kinase 1/2 (ERK1/2) independent manner involving activation of nuclear factor of activated T cells (NFAT). Angiogenic and antiangiogenic proteins secreted by epithelial cells, in response to PGF2α-FP receptor signalling, could therefore regulate vascular function in a paracrine manner. Hence this thesis examines the role of angiogenic factors FGF2, CXCL1 and CXCL8, secreted into PGF2α-treated FPS cell conditioned medium (P CM), in the regulation of endothelial cell function in vitro. Firstly, using an in vitro model system, treatment of human umbilical vein endothelial cells (HUVECs) with P CM increased endothelial network formation and proliferation, compared to control CM. Immunoneutralisation of FGF2, CXCL1 and CXCL8 from the P CM reduced endothelial cell network formation and proliferation (P