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Raineri D, Abreu H, Vilardo B, Kustrimovic N, Venegoni C, Cappellano G, Chiocchetti A. Deep Flow Cytometry Unveils Distinct Immune Cell Subsets in Inducible T Cell Co-Stimulator Ligand (ICOSL)- and ICOS-Knockout Mice during Experimental Autoimmune Encephalomyelitis. Int J Mol Sci 2024; 25:2509. [PMID: 38473756 DOI: 10.3390/ijms25052509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/10/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
The inducible T cell co-stimulator ligand (ICOSL), expressed by antigen presenting cells, binds to the inducible T cell co-stimulator (ICOS) on activated T cells. Improper function of the ICOS/ICOSL pathway has been implicated in several autoimmune diseases, including multiple sclerosis (MS). Previous studies showed that ICOS-knockout (KO) mice exhibit severe experimental autoimmune encephalomyelitis (EAE), the animal model of MS, but data on ICOSL deficiency are not available. In our study, we explored the impact of both ICOS and ICOSL deficiencies on MOG35-55 -induced EAE and its associated immune cell dynamics by employing ICOSL-KO and ICOS-KO mice with a C57BL/6J background. During EAE resolution, MOG-driven cytokine levels and the immunophenotype of splenocytes were evaluated by ELISA and multiparametric flow cytometry, respectively. We found that both KO mice exhibited an overlapping and more severe EAE compared to C57BL/6J mice, corroborated by a reduction in memory/regulatory T cell subsets and interleukin (IL-)17 levels. It is noteworthy that an unsupervised analysis showed that ICOSL deficiency modifies the immune response in an original way, by affecting T central and effector memory (TCM, TEM), long-lived CD4+ TEM cells, and macrophages, compared to ICOS-KO and C57BL/6J mice, suggesting a role for other binding partners to ICOSL in EAE development, which deserves further study.
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Affiliation(s)
- Davide Raineri
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Hugo Abreu
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Beatrice Vilardo
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Natasa Kustrimovic
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Chiara Venegoni
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Giuseppe Cappellano
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
| | - Annalisa Chiocchetti
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, University of Eastern Piedmont, 28100 Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, University of Eastern Piedmont, 28100 Novara, Italy
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Tateosian NL, Morelli MP, Pellegrini JM, García VE. Beyond the Clinic: The Activation of Diverse Cellular and Humoral Factors Shapes the Immunological Status of Patients with Active Tuberculosis. Int J Mol Sci 2023; 24:5033. [PMID: 36902461 PMCID: PMC10002939 DOI: 10.3390/ijms24055033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb), the etiologic agent of tuberculosis (TB), has killed nearly one billion people in the last two centuries. Nowadays, TB remains a major global health problem, ranking among the thirteen leading causes of death worldwide. Human TB infection spans different levels of stages: incipient, subclinical, latent and active TB, all of them with varying symptoms, microbiological characteristics, immune responses and pathologies profiles. After infection, Mtb interacts with diverse cells of both innate and adaptive immune compartments, playing a crucial role in the modulation and development of the pathology. Underlying TB clinical manifestations, individual immunological profiles can be identified in patients with active TB according to the strength of their immune responses to Mtb infection, defining diverse endotypes. Those different endotypes are regulated by a complex interaction of the patient's cellular metabolism, genetic background, epigenetics, and gene transcriptional regulation. Here, we review immunological categorizations of TB patients based on the activation of different cellular populations (both myeloid and lymphocytic subsets) and humoral mediators (such as cytokines and lipid mediators). The analysis of the participating factors that operate during active Mtb infection shaping the immunological status or immune endotypes of TB patients could contribute to the development of Host Directed Therapy.
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Affiliation(s)
- Nancy Liliana Tateosian
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
| | - María Paula Morelli
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
| | - Joaquín Miguel Pellegrini
- Centre d’Immunologie de Marseille Luminy, INSERM, CNRS, Aix-Marseille Université, Parc Scientifique et Technologique de Luminy, Case 906, CEDEX 09, 13288 Marseille, France
| | - Verónica Edith García
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Intendente Güiraldes 2160, Pabellón II, 4°piso, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina
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3
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Pellegrini JM, Sabbione F, Morelli MP, Tateosian NL, Castello FA, Amiano NO, Palmero D, Levi A, Ciallella L, Colombo MI, Trevani AS, García VE. Neutrophil autophagy during human active tuberculosis is modulated by SLAMF1. Autophagy 2020; 17:2629-2638. [PMID: 32954947 DOI: 10.1080/15548627.2020.1825273] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neutrophils infected with Mycobacterium tuberculosis (Mtb) predominate in tuberculosis patients' lungs. Neutrophils phagocytose the pathogen, but the mechanism of pathogen elimination is controversial. Macroautophagy/autophagy, a crucial mechanism for several neutrophil functions, can be modulated by immunological mediators. The costimulatory molecule SLAMF1 can act as a microbial sensor in macrophages being also able to interact with autophagy-related proteins. Here, we demonstrate for the first time that human neutrophils express SLAMF1 upon Mtb-stimulation. Furthermore, SLAMF1 was found colocalizing with LC3B+ vesicles, and activation of SLAMF1 increased neutrophil autophagy induced by Mtb. Finally, tuberculosis patients' neutrophils displayed reduced levels of SLAMF1 and lower levels of autophagy against Mtb as compared to healthy controls. Altogether, these results indicate that SLAMF1 participates in neutrophil autophagy during active tuberculosis.Abbreviations: AFB: acid-fast bacilli; BafA1: bafilomycin A1; CLL: chronic lymphocytic leukemia; DPI: diphenyleneiodonium; EVs: extracellular vesicles; FBS: fetal bovine serum; HD: healthy donors; HR: high responder (tuberculosis patient); IFNG: interferon gamma; IL1B: interleukin 1 beta; IL17A: interleukin 17A; IL8: interleukin 8; LR: low responder (tuberculosis patient); mAb: monoclonal antibody; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAPK: mitogen-activated protein kinase; MAPK1/ERK2: mitogen-activated protein kinase 1; MAPK14/p38: mitogen-activated protein kinase 14; Mtb: Mycobacterium tuberculosis; Mtb-Ag: Mycobacterium tuberculosis, Strain H37Rv, whole cell lysate; NETs: neutrophils extracellular traps; PPD: purified protein derivative; ROS: reactive oxygen species; PIK3C3/VPS34: phosphatidylinositol 3-kinase catalytic subunit type 3; SLAMF1: signaling lymphocytic activation molecule family member 1; TB: tuberculosis; TLR: toll like receptor.
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Affiliation(s)
- Joaquín Miguel Pellegrini
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Florencia Sabbione
- Laboratorio de Inmunidad Innata, Instituto de Medicina Experimental (IMEX)-CONICET,Academia Nacional de Medicina, Buenos Aires, Argentina
| | - María Paula Morelli
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Nancy Liliana Tateosian
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Florencia Andrea Castello
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Nicolás Oscar Amiano
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Domingo Palmero
- Hospital F.J. Muñiz, Uspallata 2272, (C1282AEN) Buenos Aires, Argentina
| | - Alberto Levi
- Hospital F.J. Muñiz, Uspallata 2272, (C1282AEN) Buenos Aires, Argentina
| | - Lorena Ciallella
- Hospital F.J. Muñiz, Uspallata 2272, (C1282AEN) Buenos Aires, Argentina
| | - María Isabel Colombo
- Instituto de Histología y Embriología de Mendoza, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo-CONICET, Mendoza, Argentina
| | - Analía Silvina Trevani
- Laboratorio de Inmunidad Innata, Instituto de Medicina Experimental (IMEX)-CONICET,Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Verónica Edith García
- Departamento de Química Biológica. Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
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4
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Rolandelli A, Pellegrini JM, Hernández Del Pino RE, Tateosian NL, Amiano NO, Morelli MP, Castello FA, Casco N, Levi A, Palmero DJ, García VE. The Non-synonymous rs763780 Single-Nucleotide Polymorphism in IL17F Gene Is Associated With Susceptibility to Tuberculosis and Advanced Disease Severity in Argentina. Front Immunol 2019; 10:2248. [PMID: 31616423 PMCID: PMC6764169 DOI: 10.3389/fimmu.2019.02248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 09/05/2019] [Indexed: 12/18/2022] Open
Abstract
Th17 lymphocytes, that produce IL17A, IL17F, and IL22, play a crucial role during the immune response against Mycobacterium tuberculosis (Mtb) infection. Whereas, the contribution of IL17A in immunity to tuberculosis is usually accepted, the role of IL17F has been scarcely studied so far. The aim of this work was to evaluate the existence of a potential association of the non-synonymous variant rs763780 SNP of the IL17F gene with human tuberculosis. Accordingly, by comparing healthy donors (HD) and tuberculosis patients (TB) populations we demonstrated an association between the C allele of the SNP and the susceptibility to tuberculosis disease in Argentina. Furthermore, we found that peripheral blood mononuclear cells (PBMCs) from individuals with a more effective immune response against Mtb secreted the highest levels of IL17F when stimulated with a lysate of Mtb (Mtb-Ag). Besides, we evidenced that Mtb-Ag-stimulated PBMCs from HD carrying the C variant of the SNP displayed the lowest IFNG secretion, proliferation index, and SLAM expression as compared to TT carriers. Moreover, Mtb-Ag-stimulated PBMCs from TB carrying the C allele produced the lowest levels of IFNG, the highest level of IL17A, and the minimum proliferation indexes as compared to TT TB, suggesting a relationship between the C allele and tuberculosis severity. In fact, TB carrying the C allele presented a more severe disease, with the highest bacilli burden in sputum. Together, our findings identify the IL17F rs763780 SNP as a biomarker of tuberculosis susceptibility and advanced disease severity in Argentina, suggesting that IL17F could be a critical cytokine in tuberculosis immunity.
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Affiliation(s)
- Agustín Rolandelli
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - Joaquín Miguel Pellegrini
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - Rodrigo Emanuel Hernández Del Pino
- Center of Investigation and Transference of National Northwest University of Buenos Aires (CITNOBA), The National Northwest University of Buenos Aires (UNNOBA)-CONICET, Buenos Aires, Argentina
| | - Nancy Liliana Tateosian
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - Nicolás Oscar Amiano
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - María Paula Morelli
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - Florencia Andrea Castello
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
| | - Nicolás Casco
- Tisioneumonology Division, F. J. Muñiz Hospital, Buenos Aires, Argentina
| | - Alberto Levi
- Tisioneumonology Division, F. J. Muñiz Hospital, Buenos Aires, Argentina
| | | | - Verónica Edith García
- Department of Biological Chemistry, University of Buenos Aires (UBA), School of Sciences, Buenos Aires, Argentina.,Institute of Biological Chemistry of Exact and Natural Sciences (IQUIBICEN), National Council of Science and Technology (CONICET), Buenos Aires, Argentina
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5
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Singh SK, Larsson M, Schön T, Stendahl O, Blomgran R. HIV Interferes with the Dendritic Cell-T Cell Axis of Macrophage Activation by Shifting Mycobacterium tuberculosis-Specific CD4 T Cells into a Dysfunctional Phenotype. THE JOURNAL OF IMMUNOLOGY 2018; 202:816-826. [PMID: 30593540 DOI: 10.4049/jimmunol.1800523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 11/26/2018] [Indexed: 02/07/2023]
Abstract
HIV coinfection is the greatest risk factor for transition of latent Mycobacterium tuberculosis infection into active tuberculosis (TB). Epidemiological data reveal both the reduction and the impairment of M. tuberculosis-specific CD4 T cells, although the cellular link and actual mechanisms resulting in immune impairment/suppression need further characterization. M. tuberculosis-specific CD4 T cells play a central role in development of protective immunity against TB, in which they participate in the activation of macrophages through the dendritic cell (DC)-T cell axis. Using an in vitro priming system for generating Ag-specific T cells, we explored if HIV-M. tuberculosis-infected (coinfected) human DCs can dysregulate the M. tuberculosis-specific CD4 T cell phenotype and functionality and subsequently mediate the failure to control M. tuberculosis infection in macrophages. After coculture with coinfected DCs, M. tuberculosis Ag-specific CD4 T cells lost their ability to enhance control of M. tuberculosis infection in infected macrophages. Coinfection of DCs reduced proliferation of M. tuberculosis Ag-specific CD4 T cells without affecting their viability, led to increased expression of coinhibitory factors CTLA-4, PD-1, and Blimp-1, and decreased expression of costimulatory molecules CD40L, CD28, and ICOS on the T cells. Expression of the regulatory T cell markers FOXP3 and CD25, together with the immunosuppressive cytokines TGF-β and IL-10, was also significantly increased by coinfection compared with M. tuberculosis single infection. Our data suggest a pattern in which HIV, through its effect on DCs, impairs the ability of M. tuberculosis-specific CD4 T cells to maintain a latent TB within human macrophages, which could play an early role in the subsequent development of TB.
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Affiliation(s)
- Susmita K Singh
- Division of Medical Microbiology, Department of Clinical and Experimental Medicine, Medical Faculty, Linköping University, 581 85 Linköping, Sweden
| | - Marie Larsson
- Division of Molecular Virology, Department of Clinical and Experimental Medicine, Medical Faculty, Linköping University, 581 85 Linköping, Sweden; and
| | - Thomas Schön
- Division of Medical Microbiology, Department of Clinical and Experimental Medicine, Medical Faculty, Linköping University, 581 85 Linköping, Sweden.,Department of Infectious Diseases and Clinical Microbiology, Kalmar County Hospital, 391 85 Kalmar, Sweden
| | - Olle Stendahl
- Division of Medical Microbiology, Department of Clinical and Experimental Medicine, Medical Faculty, Linköping University, 581 85 Linköping, Sweden
| | - Robert Blomgran
- Division of Medical Microbiology, Department of Clinical and Experimental Medicine, Medical Faculty, Linköping University, 581 85 Linköping, Sweden;
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6
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Jogdand GM, Sengupta S, Bhattacharya G, Singh SK, Barik PK, Devadas S. Inducible Costimulator Expressing T Cells Promote Parasitic Growth During Blood Stage Plasmodium berghei ANKA Infection. Front Immunol 2018; 9:1041. [PMID: 29892278 PMCID: PMC5985291 DOI: 10.3389/fimmu.2018.01041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/26/2018] [Indexed: 12/14/2022] Open
Abstract
The lethality of blood stage Plasmodium berghei ANKA (PbA) infection is associated with the expression of T-bet and production of cytokine IFN-γ. Expression of inducible costimulator (ICOS) and its downstream signaling has been shown to play a critical role in the T-bet expression and IFN-γ production. Although earlier studies have examined the role of ICOS in the control of acute blood-stage infection of Plasmodium chabaudi chabaudi AS (a non-lethal model of malaria infection), its significance in the lethal blood-stage of PbA infection remains unclear. Thus, to address the seminal role of ICOS in lethal blood-stage of PbA infection, we treated PbA-infected mice with anti-ICOS antibody and observed that these mice survived longer than their infected counterparts with significantly lower parasitemia. Anti-ICOS treatment notably depleted ICOS expressing CD4+ and CD8+ T cells with a concurrent reduction in plasma IFN-γ, which strongly indicated that ICOS expressing T cells are major IFN-γ producers. Interestingly, we observed that while ICOS expressing CD4+ and CD8+ T cells produced IFN-γ, ICOS-CD8+ T cells were also found to be producers of IFN-γ. However, we report that ICOS+CD8+ T cells were higher producers of IFN-γ than ICOS-CD8+ T cells. Moreover, correlation of ICOS expression with IFN-γ production in ICOS+IFN-γ+ T cell population (CD4+ and CD8+ T cells) suggested that ICOS and IFN-γ could positively regulate each other. Further, master transcription factor T-bet importantly involved in regulating IFN-γ production was also found to be expressed by ICOS expressing CD4+ and CD8+ T cells during PbA infection. As noted above with IFN-γ and ICOS, a positive correlation of expression of ICOS with the transcription factor T-bet suggested that both of them could regulate each other. Taken together, our results depicted the importance of ICOS expressing CD4+ and CD8+ T cells in malaria parasite growth and lethality through IFN-γ production and T-bet expression.
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Affiliation(s)
- Gajendra M Jogdand
- Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
| | - Soumya Sengupta
- Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
| | | | | | | | - Satish Devadas
- Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
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7
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Nagalingam G, Vinuesa CG, Britton WJ, Saunders BM. Modulation of Roquin Function in Myeloid Cells Reduces Mycobacterium tuberculosis-Induced Inflammation. THE JOURNAL OF IMMUNOLOGY 2017; 199:1796-1804. [PMID: 28747346 DOI: 10.4049/jimmunol.1602069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 06/30/2017] [Indexed: 12/21/2022]
Abstract
Damaging inflammation is a hallmark of Mycobacterium tuberculosis infection, and understanding how this is regulated is important for the development of new therapies to limit excessive inflammation. The E3 ubiquitin ligase, Roquin, is involved in immune regulation; however, its role in immunity to M. tuberculosis is unknown. To address this, we infected mice with a point mutation in Roquin1/Rc3h1 (sanroque). Aerosol-infected sanroque mice showed enhanced control of M. tuberculosis infection associated with delayed bacterial dissemination and upregulated TNF production in the lungs after 2 wk. However, this early control of infection was not maintained, and by 8 wk postinfection sanroque mice demonstrated an increased bacterial burden and dysregulated inflammation in the lungs. As the inflammation in the lungs of the sanroque mice could have been influenced by emerging autoimmune conditions that are characteristic of the mice aging, the function of Roquin was examined in immune cell subsets in the absence of autoimmune complications. M. bovis bacillus Calmette-Guérin-primed sanroque T cells transferred into Rag1-/- mice provided equivalent protection in the spleen and liver. Interestingly, the transfer of mycobacteria-specific (P25 CD4+ TCR transgenic) wild-type spleen cells into sanroqueRag1-/- mice actually led to enhanced protection with reduced bacterial load, decreased chemokine expression, and reduced inflammation in the lungs compared with transfers into Rag1-/- mice expressing intact Roquin. These studies suggest that modulation of Roquin in myeloid cells may reduce both inflammation and bacterial growth during the chronic phase of M. tuberculosis infection.
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Affiliation(s)
- Gayathri Nagalingam
- Tuberculosis Research Program, Centenary Institute, Newtown, New South Wales 2042, Australia
| | - Carola G Vinuesa
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Warwick J Britton
- Tuberculosis Research Program, Centenary Institute, Newtown, New South Wales 2042, Australia.,Disciplines of Medicine, Infectious Diseases and Immunology, Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia; and
| | - Bernadette M Saunders
- Tuberculosis Research Program, Centenary Institute, Newtown, New South Wales 2042, Australia; .,School of Life Sciences, Faculty of Science, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
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8
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Restimulation-induced T-cell death through NTB-A/SAP signaling pathway is impaired in tuberculosis patients with depressed immune responses. Immunol Cell Biol 2017; 95:716-728. [PMID: 28546549 PMCID: PMC5595630 DOI: 10.1038/icb.2017.42] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 01/19/2023]
Abstract
Production of IFN-γ contributes to host defense against Mycobacterium tuberculosis (Mtb) infection. We previously demonstrated that Signaling lymphocytic activation molecule-associated protein (SAP) expression on cells from tuberculosis (TB) patients was inversely correlated with IFN-γ production. Here we first investigated the role of NK, T- and B-cell antigen (NTB-A)/SAP pathway in the regulation of Th1 response against Mtb. Upon antigen stimulation, NTB-A phosphorylation rapidly increases and afterwards modulates IFN-γ and IL-17 secretion. To sustain a healthy immune system, controlled expansion and contraction of lymphocytes, both during and after an adaptive immune response, is essential. Besides, restimulation-induced cell death (RICD) results in an essential homeostatic mechanism for precluding excess T-cell accumulation and associated immunopathology during the course of certain infections. Accordingly, we found that the NTB-A/SAP pathway was required for RICD during active tuberculosis. In low responder (LR) TB patients, impaired RICD was associated with diminished FASL levels, IL-2 production and CD25high expression after cell-restimulation. Interestingly, we next observed that SAP mediated the recruitment of the Src-related kinase FYNT, only in T cells from LR TB patients that were resistant to RICD. Together, we showed that the NTB-A/SAP pathway regulates T-cell activation and RICD during human TB. Moreover, the NTB-A/SAP/FYNT axis promotes polarization to an unfavorable Th2-phenotype.
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9
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Rovetta AI, Peña D, Hernández Del Pino RE, Recalde GM, Pellegrini J, Bigi F, Musella RM, Palmero DJ, Gutierrez M, Colombo MI, García VE. IFNG-mediated immune responses enhance autophagy against Mycobacterium tuberculosis antigens in patients with active tuberculosis. Autophagy 2015; 10:2109-21. [PMID: 25426782 DOI: 10.4161/15548627.2014.981791] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Protective immunity against Mycobacterium tuberculosis (Mtb) requires IFNG. Besides, IFNG-mediated induction of autophagy suppresses survival of virulent Mtb in macrophage cell lines. We investigated the contribution of autophagy to the defense against Mtb antigen (Mtb-Ag) in cells from tuberculosis patients and healthy donors (HD). Patients were classified as high responders (HR) if their T cells produced significant IFNG against Mtb-Ag; and low responders (LR) when patients showed weak or no T cell responses to Mtb-Ag. The highest autophagy levels were detected in HD cells whereas the lowest quantities were observed in LR patients. Interestingly, upon Mtb-Ag stimulation, we detected a positive correlation between IFNG and MAP1LC3B-II/LC3-II levels. Actually, blockage of Mtb-Ag-induced IFNG markedly reduced autophagy in HR patients whereas addition of limited amounts of IFNG significantly increased autophagy in LR patients. Therefore, autophagy collaborates with human immune responses against Mtb in close association with specific IFNG secreted against the pathogen.
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Key Words
- AG, antigen
- ATG, autophagy-related
- FBS, fetal bovine serum
- GAPDH, glyceraldehyde-3-phosphate dehydrogenase
- GTP, guanosine triphosphate
- HD, healthy donors
- HR TB, high-responder tuberculosis patient
- IFNG
- IFNG, interferon gamma
- IL, Interleukin
- LC3, microtubule-associated protein 1A/1B-light chain 3
- LR TB, low-responder tuberculosis patients
- Mtb-Ag, Mycobacterium tuberculosis antigen
- PBMC, peripheral blood mononuclear cells
- PBS, phosphate-buffered saline
- SLAM, signaling lymphocytic activation molecule
- TB, tuberculosis
- Th, T helper
- autophagy
- cytokines
- defense
- immune response
- mAb, monoclonal antibody
- patients
- rIFNG, recombinant IFNG
- tuberculosis
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Affiliation(s)
- Ana I Rovetta
- a Departamento de Química Biológica; Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires (UBA) ; Buenos Aires , Argentina
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Correlates of Vaccine-Induced Protection against Mycobacterium tuberculosis Revealed in Comparative Analyses of Lymphocyte Populations. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2015; 22:1096-108. [PMID: 26269537 DOI: 10.1128/cvi.00301-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/09/2015] [Indexed: 12/16/2022]
Abstract
A critical hindrance to the development of a novel vaccine against Mycobacterium tuberculosis is a lack of understanding of protective correlates of immunity and of host factors involved in a successful adaptive immune response. Studies from our group and others have used a mouse-based in vitro model system to assess correlates of protection. Here, using this coculture system and a panel of whole-cell vaccines with varied efficacy, we developed a comprehensive approach to understand correlates of protection. We compared the gene and protein expression profiles of vaccine-generated immune peripheral blood lymphocytes (PBLs) to the profiles found in immune splenocytes. PBLs not only represent a clinically relevant cell population, but comparing the expression in these populations gave insight into compartmentally specific mechanisms of protection. Additionally, we performed a direct comparison of host responses induced when immune cells were cocultured with either the vaccine strain Mycobacterium bovis BCG or virulent M. tuberculosis. These comparisons revealed host-specific and bacterium-specific factors involved in protection against virulent M. tuberculosis. Most significantly, we identified a set of 13 core molecules induced in the most protective vaccines under all of the conditions tested. Further validation of this panel of mediators as a predictor of vaccine efficacy will facilitate vaccine development, and determining how each promotes adaptive immunity will advance our understanding of antimycobacterial immune responses.
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11
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Lara-Rodríguez C, Alvarado-Vásquez N, Bernal D, Gorocica P, Zenteno E, Lascuraín R. CD3+ICOS+ T cells show differences in the synthesis of nitric oxide, IFN-γ, and IL-10 in patients with pulmonary tuberculosis or in healthy household contacts. Clin Exp Med 2015; 16:481-491. [DOI: 10.1007/s10238-015-0380-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 07/28/2015] [Indexed: 11/28/2022]
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12
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Suarez GV, Angerami MT, Vecchione MB, Laufer N, Turk G, Ruiz MJ, Mesch V, Fabre B, Maidana P, Ameri D, Cahn P, Sued O, Salomón H, Bottasso OA, Quiroga MF. HIV-TB coinfection impairs CD8(+) T-cell differentiation and function while dehydroepiandrosterone improves cytotoxic antitubercular immune responses. Eur J Immunol 2015; 45:2529-41. [PMID: 26047476 DOI: 10.1002/eji.201545545] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/08/2015] [Accepted: 06/01/2015] [Indexed: 12/14/2022]
Abstract
Tuberculosis (TB) is the leading cause of death among HIV-positive patients. The decreasing frequencies of terminal effector (TTE ) CD8(+) T cells may increase reactivation risk in persons latently infected with Mycobacterium tuberculosis (Mtb). We have previously shown that dehydroepiandrosterone (DHEA) increases the protective antitubercular immune responses in HIV-TB patients. Here, we aimed to study Mtb-specific cytotoxicity, IFN-γ secretion, memory status of CD8(+) T cells, and their modulation by DHEA during HIV-TB coinfection. CD8(+) T cells from HIV-TB patients showed a more differentiated phenotype with diminished naïve and higher effector memory and TTE T-cell frequencies compared to healthy donors both in total and Mtb-specific CD8(+) T cells. Notably, CD8(+) T cells from HIV-TB patients displayed higher Terminal Effector (TTE ) CD45RA(dim) proportions with lower CD45RA expression levels, suggesting a not fully differentiated phenotype. Also, PD-1 expression levels on CD8(+) T cells from HIV-TB patients increased although restricted to the CD27(+) population. Interestingly, DHEA plasma levels positively correlated with TTE in CD8(+) T cells and in vitro DHEA treatment enhanced Mtb-specific cytotoxic responses and terminal differentiation in CD8(+) T cells from HIV-TB patients. Our data suggest that HIV-TB coinfection promotes a deficient CD8(+) T-cell differentiation, whereas DHEA may contribute to improving antitubercular immunity by enhancing CD8(+) T-cell functions during HIV-TB coinfection.
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Affiliation(s)
- Guadalupe V Suarez
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - Matías T Angerami
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - María B Vecchione
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - Natalia Laufer
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina.,Hospital Juan A. Fernández, Buenos Aires, Argentina
| | - Gabriela Turk
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - Maria J Ruiz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - Viviana Mesch
- Departamento de Bioquímica Clínica, INFIBIOC, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
| | - Bibiana Fabre
- Departamento de Bioquímica Clínica, INFIBIOC, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
| | - Patricia Maidana
- Departamento de Bioquímica Clínica, INFIBIOC, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
| | - Diego Ameri
- Hospital Juan A. Fernández, Buenos Aires, Argentina
| | - Pedro Cahn
- Hospital Juan A. Fernández, Buenos Aires, Argentina.,Área de Investigaciones Médicas, Fundación Huésped, Buenos Aires, Argentina
| | - Omar Sued
- Área de Investigaciones Médicas, Fundación Huésped, Buenos Aires, Argentina
| | - Horacio Salomón
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
| | - Oscar A Bottasso
- Instituto de Inmunología Clínica y Experimental de Rosario (IDICER), CONICET-UNR, Rosario, Santa Fe, Argentina
| | - María F Quiroga
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires - CONICET, Argentina
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13
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Sakthivel P, Gereke M, Breithaupt A, Fuchs D, Gigliotti L, Gruber AD, Dianzani U, Bruder D. Attenuation of immune-mediated influenza pneumonia by targeting the inducible co-stimulator (ICOS) molecule on T cells. PLoS One 2014; 9:e100970. [PMID: 25029240 PMCID: PMC4100737 DOI: 10.1371/journal.pone.0100970] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 06/01/2014] [Indexed: 11/24/2022] Open
Abstract
Inducible Co-stimulator (ICOS) plays a critical role in mediating T cell differentiation and function and is considered a key player in balancing T effector and T regulatory (Treg) cell responses. Here we show that activation of the ICOS signalling pathway during acute influenza A virus (IAV) infection by application of an agonistic ICOS antibody reduced the frequency of CD8+ T cells in the respiratory tract of IAV infected animals and delayed pathogen elimination. In line with this, immune-mediated influenza pneumonia was significantly ameliorated in mice that received ICOS agonist as indicated by significantly reduced alveolar infiltrations and bronchointerstitial pneumonia, while at the same time virus-related pathology remained unaffected. Importantly, ICOS agonist treatment resulted in expansion of CD4+Foxp3+ Tregs in IAV infected mice, which was associated with elevated levels of the immunosuppressive cytokine IL-10 in the alveolar space. Together, our findings suggest a prominent role of ICOS signaling during acute IAV infection by increasing the Treg/CD8+ T cell ratio with beneficial outcome on immune-mediated pneumonia and underline the suitability of ICOS as potential therapeutic target for immune intervention in those infectious conditions characterized by strong immunopathology rather than virus-mediated cytopathic effects.
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Affiliation(s)
- Priya Sakthivel
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Marcus Gereke
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Otto-von-Guericke University, Magdeburg, Germany
| | - Angele Breithaupt
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University, Berlin, Germany
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Luca Gigliotti
- Department of Health Sciences and Interdisciplinary Research Center of Autoimmune Diseases, “A. Avogadro” University of Eastern Piedmont, Novara, Italy
| | - Achim D. Gruber
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University, Berlin, Germany
| | - Umberto Dianzani
- Department of Health Sciences and Interdisciplinary Research Center of Autoimmune Diseases, “A. Avogadro” University of Eastern Piedmont, Novara, Italy
| | - Dunja Bruder
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Otto-von-Guericke University, Magdeburg, Germany
- * E-mail:
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14
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Samuelson EM, Laird RM, Papillion AM, Tatum AH, Princiotta MF, Hayes SM. Reduced B lymphoid kinase (Blk) expression enhances proinflammatory cytokine production and induces nephrosis in C57BL/6-lpr/lpr mice. PLoS One 2014; 9:e92054. [PMID: 24637841 PMCID: PMC3956874 DOI: 10.1371/journal.pone.0092054] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 02/18/2014] [Indexed: 12/22/2022] Open
Abstract
BLK, which encodes B lymphoid kinase, was recently identified in genome wide association studies as a susceptibility gene for systemic lupus erythematosus (SLE), and risk alleles mapping to the BLK locus result in reduced gene expression. To determine whether BLK is indeed a bona fide susceptibility gene, we developed an experimental mouse model, namely the Blk+/−.lpr/lpr (Blk+/−.lpr) mouse, in which Blk expression levels are reduced to levels comparable to those in individuals carrying a risk allele. Here, we report that Blk is expressed not only in B cells, but also in IL-17-producing γδ and DN αβ T cells and in plasmacytoid dendritic cells (pDCs). Moreover, we found that solely reducing Blk expression in C57BL/6-lpr/lpr mice enhanced proinflammatory cytokine production and accelerated the onset of lymphoproliferation, proteinuria, and kidney disease. Together, these findings suggest that BLK risk alleles confer susceptibility to SLE through the dysregulation of a proinflammatory cytokine network.
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Affiliation(s)
- Elizabeth M. Samuelson
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Renee M. Laird
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Amber M. Papillion
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Arthur H. Tatum
- Department of Pathology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Michael F. Princiotta
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Sandra M. Hayes
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, United States of America
- * E-mail:
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15
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Abstract
PURPOSE OF REVIEW Even in the era of promising molecular diagnostics for tuberculosis, understanding of the immune response remains urgent and fundamental to combating paediatric tuberculosis, given its paucibacillary nature. RECENT FINDINGS Significant advances have been made in unravelling the contributions of previously underappreciated components of the immune response to Mycobacterium tuberculosis. Research into the role of the 'innate' immune system such as neutrophils alongside 'adaptive' cells such as CD4(+), CD8(+), polyfunctional and regulatory T cells has highlighted the complexity of their interactions. Lessons from children with congenital or acquired susceptibility to mycobacterial disease, including HIV, continue to illuminate a broader understanding of the host immune response. The role of vitamin D is becoming apparent and highlights the importance of the environmental and clinical context of patients, especially in high prevalence areas. Several approaches show promise as diagnostic tests and in monitoring treatment response, although distinguishing latent from active disease remains a challenge. SUMMARY Research into novel immunological biomarkers, and greater understanding of the complex network of interactions between the innate and adaptive immune systems, is key to understanding why following exposure some children are unaffected, others latently infected and yet another group succumb to disease.
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16
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ICOS, SLAM and PD-1 expression and regulation on T lymphocytes reflect the immune dysregulation in patients with HIV-related illness with pulmonary tuberculosis. J Int AIDS Soc 2012; 15:17428. [PMID: 22713261 PMCID: PMC3499801 DOI: 10.7448/ias.15.2.17428] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 05/15/2012] [Accepted: 03/15/2012] [Indexed: 12/11/2022] Open
Abstract
Background Tuberculosis (TB) continues to be the most frequent cause of illness and death from an infectious agent globally, and its interaction with HIV is having devastating effects. To investigate how HIV alters the immune response to Mycobacterium tuberculosis (Mtb), we assessed basal and Mtb-induced proliferation, cytokine production, and expression of signalling lymphocytic activation molecule (SLAM), inducible costimulator (ICOS) and programmed death-1 (PD-1) on T lymphocytes from HIV-positive individuals coinfected with TB, HIV-positive subjects, TB patients and healthy donors (HD). Findings HIV-TB patients showed increased ICOS, SLAM and PD-1 basal levels on T lymphocytes, whereas HIV-positive individuals displayed elevated levels of SLAM and PD-1, TB patients high levels of SLAM, and HD low levels of the three proteins. Mtb-stimulation enhanced ICOS expression in the four groups, but only TB and HD increased SLAM and PD-1 levels. Conclusions These data show the immune deregulation that takes place during the immune response against TB in different study populations.
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17
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Mammaglobin-A cDNA vaccination of breast cancer patients induces antigen-specific cytotoxic CD4+ICOShi T cells. Breast Cancer Res Treat 2012; 138:109-18. [PMID: 22678162 DOI: 10.1007/s10549-012-2110-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 05/22/2012] [Indexed: 12/16/2022]
Abstract
Mammaglobin-A (Mam-A) is a 10 kDa secretory protein that is overexpressed in 80 % of primary and metastatic human breast cancers. Previous studies from our laboratory demonstrated that Mam-A cDNA vaccine can induce Mam-A-specific CD8 T cell responses and mediate regression of human breast cancer xenografts in NOD/SCID mice. In this article, we present our results on a phase I clinical trial of a Mam-A cDNA vaccination in breast cancer patients with stage-IV metastatic disease, including the impact of vaccination on the expression of the inducible co-stimulator molecule (ICOS) on CD4 T cells. Specimens from seven patients with stage-IV metastatic cancer were available for these analyses. Patients were vaccinated with a Mam-A cDNA vaccine on days 0, 28, and 56, and immune responses were assessed at serial time points following vaccination. At 6 months following the first vaccination, flow cytometric analysis demonstrated a significant increase in the frequency of CD4+ICOS(hi) T cells from 5 ± 2 % pre-vaccination to 23 ± 4 % (p < 0.001), with a concomitant decrease in the frequency of CD4+FoxP3+ T cells (regulatory T cells [Treg]) from 19 ± 6 to 10 ± 5 % (p < 0.05). ELISpot analysis of CD4+ICOS(hi) sorted T cells demonstrated that following vaccination the cytokines produced by Mam-A-specific T cells switched from IL-10 (78 ± 21 spm pre-vaccination to 32 ± 14 spm 5 months post-vaccine p < 0.001) to IFN-γ (12 ± 6 spm pre-vaccination to 124 ± 31 spm 5 months post-vaccine p < 0.001). The ratio of CD4+ICOS(hi) T cells to CD4+FoxP3+ T cells increased from 0.37 ± 0.12 before vaccination to 2.3 ± 0.72 (p = 0.021) following vaccination. Further, these activated CD4+ICOS(hi) T cells induced preferential lysis of human breast cancer cells expressing Mam-A protein. We conclude that Mam-A cDNA vaccination is associated with specific expansion and activation of CD4+ICOS(hi) T cells, with a concomitant decrease in Treg frequency. These encouraging results strongly suggest that Mam-A cDNA vaccination can induce antitumor immunity in breast cancer patients.
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18
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CD137 differentially regulates innate and adaptive immunity against Mycobacterium tuberculosis. Immunol Cell Biol 2011; 90:449-56. [PMID: 21747409 PMCID: PMC3330265 DOI: 10.1038/icb.2011.63] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Protective immunity against Mycobacterium tuberculosis is primarily mediated by the interaction of antigen-specific T cells and antigen presenting cells, which often depends on the interplay of cytokines produced by these cells. Costimulatory signals represent a complex network of receptor–ligand interactions that qualitatively and quantitatively influence immune responses. Thus, here we investigated the function of CD137 and CD137L, molecules known to have a central role in immune regulation, during human tuberculosis (TB). We demonstrated that M. tuberculosis antigen stimulation increased both CD137 and CD137L expression on monocytes and NK cells from TB patients and healthy donors, but only up-regulated CD137 on T lymphocytes. Blockage of the CD137 pathway enhanced the levels of interferon (IFN)-γ and tumor necrosis factor (TNF)-α produced by monocytes and NK against M. tuberculosis. In contrast, CD137 blockage significantly decreased the specific degranulation of CD8+ T cells and the percentage of specific IFN-γ and TNF-α producing lymphocytes against the pathogen. Furthermore, inhibition of the CD137 pathway markedly increased T-cell apoptosis. Taken together, our results demonstrate that CD137:CD137L interactions regulate the innate and adaptive immune response of the host against M. tuberculosis.
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19
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Dorhoi A, Reece ST, Kaufmann SHE. For better or for worse: the immune response against Mycobacterium tuberculosis balances pathology and protection. Immunol Rev 2011; 240:235-51. [PMID: 21349097 DOI: 10.1111/j.1600-065x.2010.00994.x] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tuberculosis (TB) is a complex disease, and the success of the bacterium as an intracellular pathogen is the outcome of its close and longstanding coevolution with the mammalian host. The dialogue between Mycobacterium tuberculosis and the host is becoming understandable at the molecular, cellular, and tissue level. This has led to the elucidation of the (i) interaction between pattern recognition receptors and pathogen-associated molecular patterns, (ii) cross-talk between immune cells, and (iii) mechanisms underlying granuloma development. Disease as an eventual but not a necessary consequence of infection results from a sensitive balance between protective immunity and destructive pathology. Early events, governed largely by conserved mechanisms of host recognition, impact not only on type and course of adaptive immunity but also on lung parenchymal function. New interpretations of how these responses shape the lung environment and direct granuloma development emphasize that the disease results from pathologic consequences of non-resolving inflammation. We review recent advances in TB research within the context of this ambitious view of TB.
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Affiliation(s)
- Anca Dorhoi
- Department of Immunology, Max Planck Institute for Infection Biology, Berlin, Germany
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20
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Nouailles G, Day TA, Kuhlmann S, Loewe D, Dorhoi A, Gamradt P, Hurwitz R, Jörg S, Pradl L, Hutloff A, Koch M, Kursar M, Kaufmann SHE. Impact of inducible co-stimulatory molecule (ICOS) on T-cell responses and protection against Mycobacterium tuberculosis infection. Eur J Immunol 2011; 41:981-91. [DOI: 10.1002/eji.201040608] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 11/16/2010] [Accepted: 01/05/2011] [Indexed: 11/07/2022]
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Wong SC, Tan AHM, Lam KP. Functional hierarchy and relative contribution of the CD28/B7 and ICOS/B7-H2 costimulatory pathways to T cell-mediated delayed-type hypersensitivity. Cell Immunol 2009; 256:64-71. [DOI: 10.1016/j.cellimm.2009.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 01/13/2009] [Accepted: 01/21/2009] [Indexed: 10/21/2022]
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Hawiger D, Tran E, Du W, Booth CJ, Wen L, Dong C, Flavell RA. ICOS mediates the development of insulin-dependent diabetes mellitus in nonobese diabetic mice. THE JOURNAL OF IMMUNOLOGY 2008; 180:3140-7. [PMID: 18292537 DOI: 10.4049/jimmunol.180.5.3140] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Initiation of diabetes in NOD mice can be mediated by the costimulatory signals received by T cells. The ICOS is found on Ag-experienced T cells where it acts as a potent regulator of T cell responses. To determine the function of ICOS in diabetes, we followed the course of autoimmune disease and examined T cells in ICOS-deficient NOD mice. The presence of ICOS was indispensable for the development of insulitis and hyperglycemia in NOD mice. In T cells, the deletion of ICOS resulted in a decreased production of the Th1 cytokine IFN-gamma, whereas the numbers of regulatory T cells remained unchanged. We conclude that ICOS is critically important for the induction of the autoimmune process that leads to diabetes.
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Affiliation(s)
- Daniel Hawiger
- Department of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510, USA
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23
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Jurado JO, Alvarez IB, Pasquinelli V, Martínez GJ, Quiroga MF, Abbate E, Musella RM, Chuluyan HE, García VE. Programmed death (PD)-1:PD-ligand 1/PD-ligand 2 pathway inhibits T cell effector functions during human tuberculosis. THE JOURNAL OF IMMUNOLOGY 2008; 181:116-25. [PMID: 18566376 DOI: 10.4049/jimmunol.181.1.116] [Citation(s) in RCA: 201] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Protective immunity against Mycobacterium tuberculosis requires the generation of cell-mediated immunity. We investigated the expression and role of programmed death 1 (PD-1) and its ligands, molecules known to modulate T cell activation, in the regulation of IFN-gamma production and lytic degranulation during human tuberculosis. We demonstrated that specific Ag-stimulation increased CD3+PD-1+ lymphocytes in peripheral blood and pleural fluid from tuberculosis patients in direct correlation with IFN-gamma production from these individuals. Moreover, M. tuberculosis-induced IFN-gamma participated in the up-regulation of PD-1 expression. Blockage of PD-1 or PD-1 and its ligands (PD-Ls: PD-L1, PD-L2) enhanced the specific degranulation of CD8+ T cells and the percentage of specific IFN-gamma-producing lymphocytes against the pathogen, demonstrating that the PD-1:PD-Ls pathway inhibits T cell effector functions during active M. tuberculosis infection. Furthermore, the simultaneous blockage of the inhibitory receptor PD-1 together with the activation of the costimulatory protein signaling lymphocytic activation molecule led to the promotion of protective IFN-gamma responses to M. tuberculosis, even in patients with weak cell-mediated immunity against the bacteria. Together, we demonstrated that PD-1 interferes with T cell effector functions against M. tuberculosis, suggesting that PD-1 has a key regulatory role during the immune response of the host to the pathogen.
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Affiliation(s)
- Javier O Jurado
- Department of Biological Chemistry, School of Sciences, University of Buenos Aires, Buenos Aires, Argentina
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Theus SA, Theus JW, Cottler-Fox M. UC blood infection with clinical strains of Mycobacterium tuberculosis: a novel model. Cytotherapy 2007; 9:647-53. [PMID: 17852201 DOI: 10.1080/14653240701389960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Use of unrelated cord blood transplantation (UCBT) is increasing, yet high rates of mortality secondary to infection remain a problem. We investigated the utility of using umbilical cord blood (UCB) as a model to study a naive cell population challenged by Mycobacterium tuberculosis. METHODS Mononuclear cells were isolated from nine UCB samples and infected with each of four distinct strains of M. tuberculosis. The isolates used were two highly transmissible clinical strains, the virulent laboratory strain H37Rv and a unique strain isolated from only one case (i.e. non-virulent). CFU were assessed at 3 h post-infection (day 0) and at day 7 to generate growth curves. Viability of the mononuclear cells was assessed prior to infection, 3 h post-infection and at days 3, 5 and 7 post-infection. IFN-gamma and TNF-alpha levels were determined at 24 h post-infection. RESULTS All three of the virulent strains demonstrated rapid growth in UCB cells that was significantly faster than the growth rate observed for the non-virulent unique isolate. There was no significant decrease in UCB cell viability after the 7-day incubation period regardless of infecting isolate. UCB cells secreted IFN-gamma in response to infection, with no significant difference related to infection with different isolates. However, there was a significant increase in the amount of TNF-alpha elicited following infection with the non-virulent isolate compared with the virulent isolates. DISCUSSION These results show that UCB can be used as a model to study infection, hopefully leading to new therapies for neonates and UCBT recipients.
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Affiliation(s)
- S A Theus
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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