XPO1 Inhibition enhances sensitivity to platinum-based chemotherapy in germinal-center B-cell-like-DLBCL cells. (PubMed, Hematology)
Cell lines representing DLBCL subtypes were treated with varying concentrations of the XPO1 inhibitor selinexor (XPO1i), cisplatin (CDDP), and oxaliplatin (OXA), alone or in combination. In OCI-Ly8 and OCI-Ly1 cells, OXA alone inhibited phosphorylation of AKT and mTOR while increasing phosphorylation of JNK, ATM, and p53, and expression of γH2AX; these effects were potentiated by the combination of XPO1i and OXA. XPO1 inhibition enhances platinum-induced cytotoxicity in GCB-DLBCL, supporting clinical evaluation of XPO1i-platinum combinations as salvage therapy.