1 resultado para Chick Lit
em Universita di Parma
Filtro por publicador
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Resumo:
Tumour progression is a complex process that frequently brings to cancer metastasis, the first cause of poor prognosis of cancer affected patients. Metastasis are generated by cells escaped from a primary mass and able to enter in the circulation, survive and proliferate in a new, distant site of the organism. To reach all these goal, many different phenomena had occur within both the cancer cells and the surrounding microenvironment. In the first part of this thesis, the focus was pointed on the metastatic potential of a leiomyosarcoma cell model. The studied cancer cells demonstrated a strong invasive capacity of the ECM in vitro, principally by production of matrix metalloproteinases 2 and 9, and robust pro-angiogenic activity in the chick CAM model, that facilitate its dissemination through same chick embryo internal organs. This study, with the title “MMPs and angiogenesis affect the metastatic potential of a human vulvar leiomyosarcoma cell line”, is presented in the published form. In the second part of this work, the emphasis was given to the microvascular element of the tumour microenvironment and specifically to the perivascular pericytes. These are intriguing cells due to their uncertain involvement in the biology of cancer. It is not clear how pericytes change within the tumour microenvironment and which is their contribute during the tumour dissemination. After the characterization of the chosen pericytic cell model, an in vitro study of the interaction between pericytes and different cancer cell lines where performed. Indirect and direct cell-cell interaction as well as movement of cancer cells in presence of pericytes conditioned media was analysed, in order to investigate the reciprocal influence of pericytes and tumour cells in the context of cancer progression.