Caki-1 is a tumorigenic cell line that was established from the cells of a renal tumor taken from a 49-year-old Caucasian male with clear cell carcinoma. Caki-1 cells have a modal chromosome number of 68, exhibit an epithelial-like morphology, and grow adherently in monolayers in vitro . The Caki-1 cell line is suitable for both in vivo and in vitro transfection to study kidney cancer, and a Caki-1 xenograft model and Caki-1 Transfection Reagent to transfect Caki-1 cells are available through Altogen Biosystems .
Clusterin has been previously reported to promote cell proliferation, migration, and invasiveness in renal cell carcinoma, but the underlying mechanisms have not been established. In this study, researchers analyzed of effects of clusterin on Caki-1 cell growth, invasion and S100A4 expression. Caki-1 cells were treated with shRNA targeting clusterin in vitro , and different assays were used to detect clusterin and S100A4 expression, as well as Caki-1 cell viability and growth. Results found that an overexpression of clusterin increased cell proliferation and invasiveness, which was mediated by the up-regulation of S100A4. Conversely, targeting clusterin led to a decrease in cell proliferation and invasiveness. These findings suggest that suppressing clusterin could be used in future therapeutic approaches for treating renal cell carcinoma. [ LINK ]