Journal
CANCER CELL
Volume 40, Issue 11, Pages 1407-+Publisher
CELL PRESS
DOI: 10.1016/j.ccell.2022.09.013
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Funding
- National Key Research and Development Program of China [2019YFA0110000, 2018YFE0201102, 2018YFA0107703]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA16010503]
- National Natural Science Foundation of China [81773269, 31722036]
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Depletion of basic leucine zipper ATF-like transcription factor (BATF) improves the antitumor performance of CAR-T cells against solid tumors, and BATF regulates genes related to exhaustion and development of effector and memory T cells.
Chimeric antigen receptor (CAR) T cell therapy has limited efficacy against solid tumors, and one major chal-lenge is T cell exhaustion. To address this challenge, we performed a candidate gene screen using a hypo -function CAR-T cell model and found that depletion of basic leucine zipper ATF-like transcription factor (BATF) improved the antitumor performance of CAR-T cells. In different types of CAR-T cells and mouse OT-1 cells, loss of BATF endows T cells with improved resistance to exhaustion and superior tumor eradica-tion efficacy. Mechanistically, we found that BATF binds to and up-regulates a subset of exhaustion-related genes in human CAR-T cells. BATF regulates the expression of genes involved in development of effector and memory T cells, and knocking out BATF shifts the population toward a more central memory subset. We demonstrate that BATF is a key factor limiting CAR-T cell function and that its depletion enhances the anti-tumor activity of CAR-T cells against solid tumors.
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