The influence of platelet membranes on tumour cell behaviour

Abstract

              <p>The significant role of platelets in the protection of tumour cells from immune attack and shear forces and the promotion of tumour cell extravasation from the bloodstream in the process of haematogenous metastasis have been extensively studied. The role of platelets, and in particular platelet membranes, in the promotion of a more metastatic phenotype in tumour cells is a more recent and, therefore, less well-recognised area of research. This review article summarises studies that have focused on the impact of tumour cell interactions with platelets and platelet membranes on tumour cell behaviour <em>in vitro</em> and <em>in vivo</em>. Furthermore, the gene expression changes that occur within tumour cells following contact with platelet membranes are also extensively reviewed. Overall, the interaction of platelet membranes with tumour cells results in a more invasive phenotype and the promotion of epithelial to mesenchymal transition with our own genetic studies revealing that matrix metalloproteinase-1, plasminogen activator inhibitor-1 and interleukin-8 are globally upregulated in a range of tumour cell lines.</p><br /><br />

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