PMID- 38243600 OWN - NLM STAT- MEDLINE DCOM- 20240311 LR - 20240315 IS - 1525-0024 (Electronic) IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 32 IP - 3 DP - 2024 Mar 6 TI - Preclinical evaluation of a novel CAR-T therapy utilizing a scFv antibody highly specific to MAGE-A4(p230-239)/HLA-A *02:01 complex. PG - 734-748 LID - S1525-0016(24)00018-2 [pii] LID - 10.1016/j.ymthe.2024.01.018 [doi] AB - Despite the revolutionary success of chimeric antigen receptor (CAR)-T therapy for hematological malignancies, successful CAR-T therapies for solid tumors remain limited. One major obstacle is the scarcity of tumor-specific cell-surface molecules. One potential solution to overcome this barrier is to utilize antibodies that recognize peptide/major histocompatibility complex (MHCs) in a T cell receptor (TCR)-like fashion, allowing CAR-T cells to recognize intracellular tumor antigens. This study reports a highly specific single-chain variable fragment (scFv) antibody against the MAGE-A4(p230-239)/human leukocyte antigen (HLA)-A *02:01 complex (MAGE-A4 pMHC), screened from a human scFv phage display library. Indeed, retroviral vectors encoding CAR, utilizing this scFv antibody as a recognition component, efficiently recognized and lysed MAGA-A4(+) tumor cells in an HLA-A *02:01-restricted manner. Additionally, the adoptive transfer of T cells modified by the CAR-containing glucocorticoid-induced tumor necrosis factor receptor (TNFR)-related receptor (GITR) intracellular domain (ICD), but not CD28 or 4-1BB ICD, significantly suppressed the growth of MAGE-A4(+) HLA-A *02:01(+) tumors in an immunocompromised mouse model. Of note, a comprehensive analysis revealed that a broad range of amino acid sequences of the MAGE-A4p(230-239) peptide were critical for the recognition of MAGE-A4 pMHC by these CAR-T cells, and no cross-reactivity to analogous peptides was observed. Thus, MAGE-A4-targeted CAR-T therapy using this scFv antibody may be a promising and safe treatment for solid tumors. CI - Copyright (c) 2024 The Author(s). Published by Elsevier Inc. All rights reserved. FAU - Wang, Linan AU - Wang L AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan. FAU - Matsumoto, Masahiro AU - Matsumoto M AD - Tokyo Laboratory 11, R&D Center, Sony Group Corporation, Bunkyo-ku, Tokyo 113-8510, Japan. FAU - Akahori, Yasushi AU - Akahori Y AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan; Center for Comprehensive Cancer Immunotherapy, Mie University, Tsu, Mie 514-8507, Japan. FAU - Seo, Naohiro AU - Seo N AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan. FAU - Shirakura, Kazuko AU - Shirakura K AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan. FAU - Kato, Takuma AU - Kato T AD - Department of Cellular and Molecular Immunology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan. FAU - Katsumoto, Yoichi AU - Katsumoto Y AD - Tokyo Laboratory 11, R&D Center, Sony Group Corporation, Bunkyo-ku, Tokyo 113-8510, Japan. FAU - Miyahara, Yoshihiro AU - Miyahara Y AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan; Center for Comprehensive Cancer Immunotherapy, Mie University, Tsu, Mie 514-8507, Japan. Electronic address: miyahr-y@med.mie-u.ac.jp. FAU - Shiku, Hiroshi AU - Shiku H AD - Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan; Center for Comprehensive Cancer Immunotherapy, Mie University, Tsu, Mie 514-8507, Japan. Electronic address: shiku@med.mie-u.ac.jp. LA - eng PT - Journal Article DEP - 20240118 PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - 0 (Single-Chain Antibodies) RN - 0 (Receptors, Chimeric Antigen) RN - 0 (HLA-A Antigens) SB - IM MH - Mice MH - Animals MH - Humans MH - *Single-Chain Antibodies/genetics MH - *Receptors, Chimeric Antigen/genetics MH - T-Lymphocytes MH - HLA-A Antigens MH - Immunotherapy, Adoptive MH - *Neoplasms PMC - PMC10928314 OTO - NOTNLM OT - CAR OT - GITR OT - ICD OT - MAGE-A4 peptide OT - MHC complex OT - pMHC COIS- Declaration of interests M.M. and Y.K. are employees of Sony Group Corporation, which collaborated in the development of a closed-cell isolation system. The Department of Personalized Cancer Immunotherapy, Mie University Graduate School of Medicine, is an endowment department supported by a grant from T cell Nouveau. EDAT- 2024/01/20 10:42 MHDA- 2024/03/11 06:43 PMCR- 2025/03/06 CRDT- 2024/01/20 01:36 PHST- 2023/04/25 00:00 [received] PHST- 2023/09/30 00:00 [revised] PHST- 2024/01/12 00:00 [accepted] PHST- 2025/03/06 00:00 [pmc-release] PHST- 2024/03/11 06:43 [medline] PHST- 2024/01/20 10:42 [pubmed] PHST- 2024/01/20 01:36 [entrez] AID - S1525-0016(24)00018-2 [pii] AID - 10.1016/j.ymthe.2024.01.018 [doi] PST - ppublish SO - Mol Ther. 2024 Mar 6;32(3):734-748. doi: 10.1016/j.ymthe.2024.01.018. Epub 2024 Jan 18.