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Functional diversification and dynamics of CAR-T cells in patients with B-ALL

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单位: [1]State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Senior Department ofHematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, China [2]Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China [3]Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan 432826, China [4]National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Suzhou 215006, China [5]State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China [6]Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China [7]Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450052, China [8]Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University,Guangzhou 510632, China [9]Institute of Immunology, Third Military Medical University, Chongqing 400038, China
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Understanding of cellular evolution and molecular programs of chimeric antigen receptor-engineered (CAR)-T cells post-infusion is pivotal for developing better treatment strategies. Here, we construct a longitudinal high-precision single-cell transcriptomic landscape of 7,578 CAR-T cells from 26 patients with B cell acute lymphoblastic leukemia (B-ALL) post-infusion. We molecularly identify eight CAR-T cell subtypes, including three cytotoxic subtypes with distinct kinetics and three dual-identity subtypes with non-T cell characteristics. Remarkably, long-term remission is coincident with the dominance of cytotoxic subtypes, while leukemia progression is correlated with the emergence of subtypes with B cell transcriptional profiles, which have dysfunctional features and might predict relapse. We further validate in vitro that the generation of B-featured CAR-T cells is induced by excessive tumor antigen stimulation or suppressed TCR signaling, while it is relieved by exogenous IL-12. Moreover, we define transcriptional hallmarks of CAR-T cell subtypes and reveal their molecular changes along computationally inferred cellular evolution in vivo. Collectively, these results decipher functional diversification and dynamics of peripheral CAR-T cells post-infusion.Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.

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出版当年[2022]版:
大类 | 1 区 生物学
小类 | 2 区 细胞生物学
最新[2025]版:
大类 | 1 区 生物学
小类 | 2 区 细胞生物学
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出版当年[2021]版:
Q1 CELL BIOLOGY
最新[2023]版:
Q1 CELL BIOLOGY

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第一作者单位: [1]State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Senior Department ofHematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, China
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通讯机构: [1]State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Senior Department ofHematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, China [2]Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China [3]Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan 432826, China [4]National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Suzhou 215006, China [5]State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China [8]Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University,Guangzhou 510632, China
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