Fig. 7: Schematic representation of the MDSCs regulation on B cells in breast cancer.

Breast cancer-derived MDSCs regulate the immunosuppressive functions of PD-1−PD-L1+ B cells through PD-L1/PI3K/AKT/NF-κB axis. Anti-PD-1 Abs, LY294002, and BAY 11-7085 can reverse MDSC-educated B cell-mediated inhibition of the T cell immune response+.