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Interleukin-7 expression by CAR-T cells improves CAR-T cell survival and efficacy in chordoma
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Interleukin-7 expression by CAR-T cells improves CAR-T cell survival and efficacy in chordoma
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Journal Article
Interleukin-7 expression by CAR-T cells improves CAR-T cell survival and efficacy in chordoma
2024
Overview
Chordoma is a rare bone tumor that frequently recurs after surgery, and the prognosis is poor with current treatments. This study aimed to identify potential novel immunotherapeutic targets for chordomas by identifying target proteins in clinical samples as well as tumor microenvironmental factors to enhance efficacy. Fourteen chordoma samples were analyzed by single-cell RNA sequencing, and B7–H3 and IL-7 were identified as potential targets and potentiators, respectively. B7–H3-targeted chimeric antigen receptor T (CAR-T) cells and B7–H3 CAR-T cells expressing IL-7 were synthesized and their anti-tumor activity evaluated in vitro, including in primary chordoma organoid models. The B7–H3 CAR-T/IL-7 therapy showed enhanced cytotoxicity and prolonged duration of action against tumor cells. Additionally, IL-7 modulated favorable subpopulations of cultured CAR-T cells, diminished immune checkpoint expression on T-cell surfaces, and enhanced T-cell functionality. The incorporation of IL-7 molecules into the B7–H3 CAR structure augmented CAR-T-cell function and improved CAR-T-cell efficacy, thus providing a novel dual therapeutic strategy for chordoma treatment.
Publisher
Springer Nature B.V
Subject
