CD274 and diffuse large B-cell lymphoma: BPTES administration did not further improve the cytotoxicity of Vγ9Vδ2 T lymphocytes combined with anti-PD-L1 antibodies (Figures 6D,E), suggesting that the attenuation effect of BPTES on immune-suppressive function was mediated by PD-L1 expression in ABC-DLBCL cells.