c-Jun overexpression in CAR T cells induces exhaustion resistance

Article

关键词: NEGATIVE REGULATOR;    IN-VIVO;    TRANSCRIPTION;    ANTIGEN;    PHOSPHORYLATION;    IMMUNOTHERAPY;    RAS;    DIFFERENTIATION;    TRANSFORMATION;    ACTIVATION;   

DOI  :  10.1038/s41586-019-1805-z

来源: SCIE

【 摘 要 】

Chimeric antigen receptor (CAR) T cells mediate anti-tumour effects in a small subset of patients with cancer(1-3), but dysfunction due to T cell exhaustion is an important barrier to progress(4-6). To investigate the biology of exhaustion in human T cells expressing CAR receptors, we used a model system with a tonically signaling CAR, which induces hallmark features of exhaustion(6). Exhaustion was associated with a profound defect in the production of IL-2, along with increased chromatin accessibility of AP-1 transcription factor motifs and overexpression of the bZIP and IRF transcription factors that have been implicated in mediating dysfunction in exhausted T cells(7-10). Here we show that CAR T cells engineered to overexpress the canonical AP-1 factor c-Jun have enhanced expansion potential, increased functional capacity, diminished terminal differentiation and improved anti-tumour potency in five different mouse tumour models in vivo. We conclude that a functional deficiency in c-Jun mediates dysfunction in exhausted human T cells, and that engineering CAR T cells to overexpress c-Jun renders them resistant to exhaustion, thereby addressing a major barrier to progress for this emerging class of therapeutic agents.

【 授权许可】

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