Figure 6. PBRM1 silencing enhances tumor angiogenesis and promotes cell proliferation of RCC cells in vitro. (A) Matrigel tube formation assay results show the tube-like structures formed in the matrigel by CM from control and PBRM1-silenced 786-O and Caki-1 cells. (B) MTT assay results show viability of control and PBRM1-silenced 786-O and Caki-1 cells. (C) The colony formation assay results show the total numbers of colonies formed by control and PBRM1-silenced 786-O and Caki-1 cells based on crystal violet staining. (D) Flow cytometry analysis shows the percentage of G1, S, and G2-M cells in control and PBRM1-silenced 786-O and Caki-1 cells based on PI staining. Note: The experiments were performed in triplicate and data are represented as means±SD; the statistical analysis was performed using Student’s t-test.