Figure 4

Depletion of KPNA2 induces G1/S arrest of EOC cells (BrdU incorporation assay). (a and b) Representative micrographs (top panel), and (c and d) quantification (middle panel) of BrdU-incorporating cells in KPNA2-overexpressing and two KPNA2 shRNA(s)-infected cell lines, relative to the control. The cells were fixed, subjected to BrdU staining, and visualized under a fluorescence microscope. Data were obtained from three independent experiments and showed similar results. Red, BrdU; blue, DAPI. (e and f) Flow cytometry analysis of the indicated EOC cells transfected with the KPNA2 overexpression construct or KPNA2 shRNA(s). The proportion of S-phase cells as significantly reduced in KPNA2 shRNA(s)-transfected cell lines (P<0.05) compared with the control group; in contrast, the proportion of S-phase cells in the line transfected with the KPNA2 construct clearly increased (P<0.05) *P<0.05