The BTLA–HVEM axis restricts CAR T cell efficacy in cancer

Puneeth Guruprasad, Alberto Carturan, Yunlin Zhang, Jong Hyun Cho, Kingsley Gideon Kumashie, Ruchi P. Patel, Ki Hyun Kim, Jong Seo Lee, Yoon Lee, Jong Hoon Kim, Junho Chung, Akshita Joshi, Ivan Cohen, Maksim Shestov, Guido Ghilardi, Jaryse Harris, Raymone Pajarillo, Mathew Angelos, Yong Gu Lee, Shan LiuJesse Rodriguez, Michael Wang, Hatcher J. Ballard, Aasha Gupta, Ositadimma H. Ugwuanyi, Seok Jae Albert Hong, Audrey C. Bochi-Layec, Christopher T. Sauter, Linhui Chen, Luca Paruzzo, Shane Kammerman, Olga Shestova, Dongfang Liu, Laura A. Vella, Stephen J. Schuster, Jakub Svoboda, Patrizia Porazzi, Marco Ruella

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The efficacy of T cell-based immunotherapies is limited by immunosuppressive pressures in the tumor microenvironment. Here we show a predominant role for the interaction between BTLA on effector T cells and HVEM (TNFRSF14) on immunosuppressive tumor microenvironment cells, namely regulatory T cells. High BTLA expression in chimeric antigen receptor (CAR) T cells correlated with poor clinical response to treatment. Therefore, we deleted BTLA in CAR T cells and show improved tumor control and persistence in models of lymphoma and solid malignancies. Mechanistically, BTLA inhibits CAR T cells via recruitment of tyrosine phosphatases SHP-1 and SHP-2, upon trans engagement with HVEM. BTLA knockout thus promotes CAR signaling and subsequently enhances effector function. Overall, these data indicate that the BTLA–HVEM axis is a crucial immune checkpoint in CAR T cell immunotherapy and warrants the use of strategies to overcome this barrier.

Original languageEnglish
Pages (from-to)1020-1032
Number of pages13
JournalNature Immunology
Volume25
Issue number6
DOIs
StatePublished - Jun 2024

Bibliographical note

Publisher Copyright:
© The Author(s), under exclusive licence to Springer Nature America, Inc. 2024.

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