PMID- 34782365 OWN - NLM STAT- MEDLINE DCOM- 20220407 LR - 20230106 IS - 1557-3265 (Electronic) IS - 1078-0432 (Print) IS - 1078-0432 (Linking) VI - 28 IP - 2 DP - 2022 Jan 15 TI - T-cell Receptor Therapy Targeting Mutant Capicua Transcriptional Repressor in Experimental Gliomas. PG - 378-389 LID - 10.1158/1078-0432.CCR-21-1881 [doi] AB - PURPOSE: Gliomas are intrinsic brain tumors with a high degree of constitutive and acquired resistance to standard therapeutic modalities such as radiotherapy and alkylating chemotherapy. Glioma subtypes are recognized by characteristic mutations. Some of these characteristic mutations have shown to generate immunogenic neoepitopes suitable for targeted immunotherapy. EXPERIMENTAL DESIGN: Using peptide-based ELISpot assays, we screened for potential recurrent glioma neoepitopes in MHC-humanized mice. Following vaccination, droplet-based single-cell T-cell receptor (TCR) sequencing from established T-cell lines was applied for neoepitope-specific TCR discovery. Efficacy of intraventricular TCR-transgenic T-cell therapy was assessed in a newly developed glioma model in MHC-humanized mice induced by CRISPR-based delivery of tumor suppressor-targeting guide RNAs. RESULTS: We identify recurrent capicua transcriptional repressor (CIC) inactivating hotspot mutations at position 215 CICR215W/Q as immunogenic MHC class II (MHCII)-restricted neoepitopes. Vaccination of MHC-humanized mice resulted in the generation of robust MHCII-restricted mutation-specific T-cell responses against CICR215W/Q. Adoptive intraventricular transfer of CICR215W-specific TCR-transgenic T cells exert antitumor responses against CICR215W-expressing syngeneic gliomas. CONCLUSIONS: The integration of immunocompetent MHC-humanized orthotopic glioma models in the discovery of shared immunogenic glioma neoepitopes facilitates the identification and preclinical testing of human leukocyte antigen (HLA)-restricted neoepitope-specific TCRs for locoregional TCR-transgenic T-cell adoptive therapy. CI - (c)2021 The Authors; Published by the American Association for Cancer Research. FAU - Kilian, Michael AU - Kilian M AUID- ORCID: 0000-0002-1946-3174 AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neurology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. AD - Faculty of Biosciences, Heidelberg University, Heidelberg, Germany. FAU - Friedrich, Mirco AU - Friedrich M AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neurology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. FAU - Sanghvi, Khwab AU - Sanghvi K AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neurology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. AD - Faculty of Biosciences, Heidelberg University, Heidelberg, Germany. FAU - Green, Edward AU - Green E AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Pusch, Stefan AU - Pusch S AUID- ORCID: 0000-0002-3407-4249 AD - DKTK Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neuropathology, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany. FAU - Kawauchi, Daisuke AU - Kawauchi D AUID- ORCID: 0000-0002-1254-9725 AD - Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany. FAU - Lower, Martin AU - Lower M AD - TRON - Translational Oncology at the University Medical Center of Johannes Gutenberg University, Mainz, Germany. FAU - Sonner, Jana K AU - Sonner JK AUID- ORCID: 0000-0002-4700-272X AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Kramer, Christopher AU - Kramer C AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Zaman, Julia AU - Zaman J AD - Faculty of Biosciences, Heidelberg University, Heidelberg, Germany. AD - DKTK Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Jung, Stefanie AU - Jung S AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Breckwoldt, Michael O AU - Breckwoldt MO AUID- ORCID: 0000-0002-9980-2390 AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neuroradiology at the Neurology Center, Heidelberg University Hospital, Heidelberg, Germany. FAU - Willimsky, Gerald AU - Willimsky G AUID- ORCID: 0000-0002-9693-948X AD - Institute of Medical Immunology, Charite-Universitatsmedizin Berlin, corporate member of Freie Universitat Berlin and Humboldt-Universitat zu Berlin, Berlin, Germany. AD - German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - German Cancer Consortium (DKTK), Partner Site Berlin, Berlin, Germany. FAU - Eichmuller, Stefan B AU - Eichmuller SB AUID- ORCID: 0000-0002-3497-6904 AD - Research Group GMP & T Cell Therapy, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - von Deimling, Andreas AU - von Deimling A AUID- ORCID: 0000-0002-5863-540X AD - DKTK Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neuropathology, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany. FAU - Wick, Wolfgang AU - Wick W AUID- ORCID: 0000-0002-6171-634X AD - Department of Neuro-oncology and National Center for Tumor Diseases, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany. AD - DKTK Clinical Cooperation Unit Neurooncology, German Cancer Research Center (DKFZ), Heidelberg, Germany. FAU - Sahm, Felix AU - Sahm F AUID- ORCID: 0000-0001-5441-1962 AD - DKTK Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neuropathology, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany. FAU - Platten, Michael AU - Platten M AUID- ORCID: 0000-0002-4746-887X AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Neurology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. AD - Helmholtz Institute for Translational Oncology (HI-TRON) Mainz, Mainz, Germany. FAU - Bunse, Lukas AU - Bunse L AUID- ORCID: 0000-0002-4490-7574 AD - DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Heidelberg, Germany. l.bunse@dkfz.de. AD - Department of Neurology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211115 PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Receptors, Chimeric Antigen) SB - IM MH - Animals MH - Disease Models, Animal MH - *Glioma/genetics/therapy MH - Immunotherapy/methods MH - *Immunotherapy, Adoptive/methods MH - Mice MH - Neoplasm Recurrence, Local MH - *Receptors, Chimeric Antigen/therapeutic use MH - T-Lymphocytes PMC - PMC9401455 EDAT- 2021/11/17 06:00 MHDA- 2022/04/08 06:00 PMCR- 2022/08/24 CRDT- 2021/11/16 06:11 PHST- 2021/05/23 00:00 [received] PHST- 2021/09/15 00:00 [revised] PHST- 2021/10/28 00:00 [accepted] PHST- 2021/11/17 06:00 [pubmed] PHST- 2022/04/08 06:00 [medline] PHST- 2021/11/16 06:11 [entrez] PHST- 2022/08/24 00:00 [pmc-release] AID - 1078-0432.CCR-21-1881 [pii] AID - CCR-21-1881 [pii] AID - 10.1158/1078-0432.CCR-21-1881 [doi] PST - ppublish SO - Clin Cancer Res. 2022 Jan 15;28(2):378-389. doi: 10.1158/1078-0432.CCR-21-1881. Epub 2021 Nov 15.