BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro

ABSTRACTBacillus Calmette-Guérin (BCG), the nonpathogenic Mycobacterium bovis strain used as tuberculosis vaccine, has been successfully used as treatment for non-muscle invasive bladder cancer for decades, and suggested to potentiate cellular and humoral immune responses. However, the exact mechani...

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Main Authors: Gloria Esteso, María José Felgueres, Álvaro F. García-Jiménez, Christina Reyburn-Valés, Alberto Benguría, Enrique Vázquez, Hugh T. Reyburn, Nacho Aguiló, Carlos Martín, Eugenia Puentes, Ingrid Murillo, Esteban Rodríguez, Mar Valés-Gómez
Format: Article
Language:English
Published: Taylor & Francis Group 2023-12-01
Series:OncoImmunology
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Online Access:https://www.tandfonline.com/doi/10.1080/2162402X.2022.2160094
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author Gloria Esteso
María José Felgueres
Álvaro F. García-Jiménez
Christina Reyburn-Valés
Alberto Benguría
Enrique Vázquez
Hugh T. Reyburn
Nacho Aguiló
Carlos Martín
Eugenia Puentes
Ingrid Murillo
Esteban Rodríguez
Mar Valés-Gómez
author_facet Gloria Esteso
María José Felgueres
Álvaro F. García-Jiménez
Christina Reyburn-Valés
Alberto Benguría
Enrique Vázquez
Hugh T. Reyburn
Nacho Aguiló
Carlos Martín
Eugenia Puentes
Ingrid Murillo
Esteban Rodríguez
Mar Valés-Gómez
author_sort Gloria Esteso
collection DOAJ
description ABSTRACTBacillus Calmette-Guérin (BCG), the nonpathogenic Mycobacterium bovis strain used as tuberculosis vaccine, has been successfully used as treatment for non-muscle invasive bladder cancer for decades, and suggested to potentiate cellular and humoral immune responses. However, the exact mechanism of action is not fully understood. We previously described that BCG mainly activated anti-tumor cytotoxic NK cells with upregulation of CD56 and a CD16+ phenotype. Now, we show that stimulation of human peripheral blood mononuclear cells with iBCG, a preparation based on BCG-Moreau, expands oligoclonal γδ T-cells, with a cytotoxic phenotype, together with anti-tumor CD56high CD16+ NK cells. We have used scRNA-seq, flow cytometry, and functional assays to characterize these BCG-activated γδ T-cells in detail. They had a high IFNγ secretion signature with expression of CD27+ and formed conjugates with bladder cancer cells. BCG-activated γδ T-cells proliferated strongly in response to minimal doses of cytokines and had anti-tumor functions, although not fully based on degranulation. BCG was sufficient to stimulate proliferation of γδ T-cells when cultured with other PBMC; however, BCG alone did not stimulate expansion of purified γδ T-cells. The characterization of these non-donor restricted lymphocyte populations, which can be expanded in vitro, could provide a new approach to prepare cell-based immunotherapy tools.
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spelling doaj.art-d8013a98d0e348c39add8c2094c071252024-01-03T19:25:37ZengTaylor & Francis GroupOncoImmunology2162-402X2023-12-0112110.1080/2162402X.2022.2160094BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitroGloria Esteso0María José Felgueres1Álvaro F. García-Jiménez2Christina Reyburn-Valés3Alberto Benguría4Enrique Vázquez5Hugh T. Reyburn6Nacho Aguiló7Carlos Martín8Eugenia Puentes9Ingrid Murillo10Esteban Rodríguez11Mar Valés-Gómez12Department of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainDepartment of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainDepartment of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainDepartment of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainServicio de Genómica, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, SpainServicio de Genómica, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, SpainDepartment of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainGrupo de Genética de Micobacterias, Departamento de Microbiología y Medicina Preventiva, Facultad de Medicina, Universidad de Zaragoza, IIS-Aragon; Zaragoza, Spain and CIBER Enfermedades Respiratorias, Instituto de Salud Carlos III; Madrid, SpainGrupo de Genética de Micobacterias, Departamento de Microbiología y Medicina Preventiva, Facultad de Medicina, Universidad de Zaragoza, IIS-Aragon; Zaragoza, Spain and CIBER Enfermedades Respiratorias, Instituto de Salud Carlos III; Madrid, SpainClinical Research Department y Research & Development Department, Biofabri, Grupo Zendal, O’Porriño, Pontevedra, SpainClinical Research Department y Research & Development Department, Biofabri, Grupo Zendal, O’Porriño, Pontevedra, SpainClinical Research Department y Research & Development Department, Biofabri, Grupo Zendal, O’Porriño, Pontevedra, SpainDepartment of Immunology and Oncology, National Centre for Biotechnology, Spanish National Research Council, Madrid, SpainABSTRACTBacillus Calmette-Guérin (BCG), the nonpathogenic Mycobacterium bovis strain used as tuberculosis vaccine, has been successfully used as treatment for non-muscle invasive bladder cancer for decades, and suggested to potentiate cellular and humoral immune responses. However, the exact mechanism of action is not fully understood. We previously described that BCG mainly activated anti-tumor cytotoxic NK cells with upregulation of CD56 and a CD16+ phenotype. Now, we show that stimulation of human peripheral blood mononuclear cells with iBCG, a preparation based on BCG-Moreau, expands oligoclonal γδ T-cells, with a cytotoxic phenotype, together with anti-tumor CD56high CD16+ NK cells. We have used scRNA-seq, flow cytometry, and functional assays to characterize these BCG-activated γδ T-cells in detail. They had a high IFNγ secretion signature with expression of CD27+ and formed conjugates with bladder cancer cells. BCG-activated γδ T-cells proliferated strongly in response to minimal doses of cytokines and had anti-tumor functions, although not fully based on degranulation. BCG was sufficient to stimulate proliferation of γδ T-cells when cultured with other PBMC; however, BCG alone did not stimulate expansion of purified γδ T-cells. The characterization of these non-donor restricted lymphocyte populations, which can be expanded in vitro, could provide a new approach to prepare cell-based immunotherapy tools.https://www.tandfonline.com/doi/10.1080/2162402X.2022.2160094Cancer immunologyBCGNK activationgamma delta T lymphocytesbladder cancerimmunotherapy
spellingShingle Gloria Esteso
María José Felgueres
Álvaro F. García-Jiménez
Christina Reyburn-Valés
Alberto Benguría
Enrique Vázquez
Hugh T. Reyburn
Nacho Aguiló
Carlos Martín
Eugenia Puentes
Ingrid Murillo
Esteban Rodríguez
Mar Valés-Gómez
BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
OncoImmunology
Cancer immunology
BCG
NK activation
gamma delta T lymphocytes
bladder cancer
immunotherapy
title BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
title_full BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
title_fullStr BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
title_full_unstemmed BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
title_short BCG-activation of leukocytes is sufficient for the generation of donor-independent innate anti-tumor NK and γδ T-cells that can be further expanded in vitro
title_sort bcg activation of leukocytes is sufficient for the generation of donor independent innate anti tumor nk and γδ t cells that can be further expanded in vitro
topic Cancer immunology
BCG
NK activation
gamma delta T lymphocytes
bladder cancer
immunotherapy
url https://www.tandfonline.com/doi/10.1080/2162402X.2022.2160094
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