FIG. 5.
Apoptosis and cell death induced by transfection of chimeric pRNA harboring siRNA targeting survivin. (I) Breast cancer MCF-7 cells were transfected with pRNA/siRNA(survivin) and apoptosis was monitored by PI–annexin V double-labeling followed by flow cytometry. Cells in the bottom right quadrant represent apoptotic cells. (II) Breast cancer cells (MDA-231) and prostate cancer cells (PC-3) were transfected with 20 pmol of pRNA/siRNA(survivin) in 24-well plates and images were taken 24 hr after transfection. The mutant pRNA/siRNA was transfected in parallel as a negative control.