Fig. 6From: Silencing of CD47 and SIRPα by Polypurine reverse Hoogsteen hairpins to promote MCF-7 breast cancer cells death by PMA-differentiated THP-1 cellsApoptosis assay. Effect of PPRHs on apoptosis. In the co-culture experiments, either only MCF-7 cells (60,000) were transfected with HpCD47Pr-T, only THP-1 cells (1000) with HpSIRPαI7-T or both MCF-7 and THP-1 cells were transfected with the corresponding PPRH or scrambled PPRHs in controls. As positive control an antibody anti-CD47 was used. Then THP-1 cells were differentiated with 3 ng/ml PMA. 48 h after transfection, apoptosis was measured by Rhodamine method: Cells Rho123-negative and IP-negative were considered as apoptotic cells. Data represent the fold-change in apoptosis relative to MCF-7 cells treated with PMA. * p < 0.05Back to article page