The human DLBCL cell lines OCI-Ly7 and OCI-Ly3 were purchased from the ATCC. The cell lines were routinely cultured in RPMI-1640 medium supplemented with 10% heat-inactivated fetal bovine serum, 2.0 mM L-glutamine, 100 U/mL penicillin, and 100 mg/mL streptomycin. All cells were cultured in a humidified incubator at 37 °C with 5% CO2. The cells were transfected by using the transfection reagent Lip2000 in accordance with the manufacturer’s instructions. After transfection for 48 h, the cells were harvested for subsequent experiments.16 (link)