Fig. 5. Effect of pharmacological or genetic inactivation of class IA PI3K isoforms on DNA synthesis in BAC1.2F5 cells and BMMs. (A) Effect of the p110
inhibitor IC87114 or the pan-PI3K inhibitor LY294002
, p110β or p110
on DNA synthesis in BMMs and BAC1.2F5 cells induced by CSF1 (30 ng/ml). [3H]Thymidine incorporation of inhibitor-treated cells was expressed relative to that of cells treated with vehicle (DMSO) only (set as 100%). *P<0.05, compared with DMSO-treated cells. (C) Effect of homozygous deletion of p110
on DNA synthesis in BMMs. The inset shows the expression level of p110
in Cre– and Cre+ BMMs in a representative experiment. (D) Summary of impact of p110 isoform neutralisation on CSF1-induced DNA synthesis in macrophages.