Fig. 1

Inhibition of PI3Kγ impairs Akt phosphorylation and B cell migration in a transwell assay. a Inhibition of PI3Kγ or PI3Kδ significantly decreased the migration of JVM3 cells. JVM3 cells were cultured in medium or stimulated for 24 h with CD40L/IL-4 and then incubated with the PI3Kγ-specific inhibitor CZC24832 (2 µM), the PI3Kδ-specific inhibitor idelalisib (1 µM), dual PI3Kδ/γ inhibitor duvelisib (1 µM), or the pan-PI3K inhibitor GDC0980 (1 µM) and subjected to a transwell migration assay. DMSO served as the vehicle control for the inhibitors, while SDF1α (100 ng/ml) served as the chemoattractant (n = 7). b Effect of PI3Kγ inhibitor on Akt phosphorylation. JVM3 cells were pre-incubated with the indicated concentrations of CZC4832 (in μM) and then stimulated with SDF1α for 10 min. Akt Ser473 phosphorylation and total Akt levels were assessed by Western blot