Human diffuse large B-cell lymphoma OCI-Ly8 and B-ALL Reh cell lines were cultured and maintained in RPMI1640 medium supplemented with 10% FBS, 2 mmol/L l-glutamine, and antibiotic–antimycotic at 37°C and 5% CO2. The use of Reh cells has been described previously (29 (link)). The OCI-Ly8 cell line was a kind gift from the laboratory of Raju Chaganti (Memorial Sloan Kettering Cancer Center, New York, NY). Cell line authentication for OCI-Ly8 and Reh was performed by short tandem repeat profiling in 2021. All cell lines were routinely confirmed to be Mycoplasma free via Sartorius EZ-PCR Mycoplasma Detection Kit.