RT Journal Article SR Electronic T1 Phagocytic Activation of Macrophages with Serum MAF Depends on Engulfment Efficiency and Not Migratory Activity JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 4295 OP 4298 DO 10.21873/anticanres.12727 VO 38 IS 7 A1 MASHIBA, RIHO A1 ISHIKAWA, MAMI A1 SUMIYA, YU A1 KAWAKATSU, KUMPEI A1 TRAN, NGOC KIET A1 NISHIKATA, TAKAHITO YR 2018 UL http://ar.iiarjournals.org/content/38/7/4295.abstract AB Background/Aim: Serum-derived macrophage activating factor (serum MAF) is known to increase the phagocytic activity of macrophages and potentially plays a role in activating cancer immunity. In order to reveal the contributing factors for phagocytic activation, the migratory activity and the efficiency of engulfment was analyzed. Materials and Methods: THP-1 macrophages were induced by 12-O-tetradecanoyl-13-acetate (TPA). The migratory activity and efficiency of engulfment were analyzed by time-lapse imaging and suspension assay, respectively. Results: While the distance of migration did not change before and after activation with serum MAF, the efficiency of beads internalisation was significantly increased. Conclusion: Phagocytic activation of serum-MAF-treated macrophages was caused by increasing the efficiency of engulfment. This study contributes to the knowledge about the activation of the immune system through phagocytic activation of macrophages.