Chimeric antigen receptor-T (CAR-T) cells directed against B-cell maturation antigen (BCMA) are an effective treatment for multiple myeloma (MM), but short persistence and frequent relapses are challenges for this immunotherapy. This lack of durability has been attributed to the premature terminal differentiation of CAR-T cells which prevents the formation of long-lived memory cells that maintain anti-tumour responses. To improve long-term efficacy, we used CRISPR/Cas9-mediated gene editing to ablate the expression of the transcription factor Blimp-1.
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