Differential phagocytosis rate of mouse M1 and M2 macrophages toward various human glioma cells upon CD47-SIRPα disruption.

<p>(A) Representative flow cytometric phagocytosis assay of mouse M1 macrophages against CSFE-labeled GBM1 and PGBM1 cells. The percentage of CSFE+CD11b+CD80^high live singlets was measured and compared between untreated and anti-CD47 antibody-treated co-cultures. (B) Representative flow cytometric phagocytosis assay of mouse M2 macrophages against CSFE-labeled GBM1 and PGBM1 cells. The percentage of CSFE+CD11b+CD206^high live singlets was measured and compared between untreated (left column) and anti-CD47 antibody-treated (right column) co-cultures. (C) Bar graph demonstrating the change in phagocytosis rates by mouse M1 macrophages towards individual co-incubated cell lines (GBM1, GBM4 and PGBM1) -/+ anti-CD47 (significant difference in means of technical triplicates indicated by * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001, **** p ≤ 0.0001, multiple t-tests). (D) Bar graph demonstrating the change in phagocytosis rates by mouse M2 macrophages towards individual co-incubated cell lines (GBM1, GBM4 and PGBM1) -/+ anti-CD47 (significant difference in means of technical triplicates indicated by * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001, **** p ≤ 0.0001, multiple t-tests).