PMID: 18425341Apr 22, 2008Paper

Migration of renal carcinoma cells is dependent on protein kinase Cdelta via beta1 integrin and focal adhesion kinase

International Journal of Oncology
W BrennerJ W Thüroff

Abstract

Migration and adhesion of tumor cells are essential prerequisites for the formation of metastases in malignant diseases. Protein kinase C (PKC) has been shown to regulate cell migration, adhesion and proliferation. In order to identify a connection between PKC isoforms and tumor progression in renal cell carcinoma (RCC), the influence of PKC isoforms on cell migration, adhesion and proliferation and possible influences of the activity of integrins and focal adhesion kinase (FAK) were analyzed in RCC cells. The experiments were performed in the RCC cell line CCF-RC1 after pre-incubation of the cells with the PKC inhibitors GF109203X, GO6976, RO31-8220 and rottlerin. Cell migration and adhesion were assessed through chemotaxis analysis and adhesion to an endothelial monolayer, respectively. Cell proliferation was analysed by a BrdU incorporation assay. The expression and activity of beta1 integrins and FAK were analysed by Western blot analysis. GF109203X reduced cell migration to 69%, the activity of beta1 integrins to 63% and FAK expression to 82% compared to untreated cells. Rottlerin reduced cell migration in a concentration-dependent manner to 36%, cell proliferation to 81%, expression and activity of beta1 integrins to 72 a...Continue Reading

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