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Mo S, Shi C, Cai Y, Xu M, Xu H, Xu Y, Zhang K, Zhang Y, Liu J, Che S, Liu X, Xing C, Long X, Chen X, Liu E. Single-cell transcriptome reveals highly complement activated microglia cells in association with pediatric tuberculous meningitis. Front Immunol 2024; 15:1387808. [PMID: 38745656 PMCID: PMC11091396 DOI: 10.3389/fimmu.2024.1387808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 04/16/2024] [Indexed: 05/16/2024] Open
Abstract
Background Tuberculous meningitis (TBM) is a devastating form of tuberculosis (TB) causing high mortality and disability. TBM arises due to immune dysregulation, but the underlying immune mechanisms are unclear. Methods We performed single-cell RNA sequencing on peripheral blood mononuclear cells (PBMCs) and cerebrospinal fluid (CSF) cells isolated from children (n=6) with TBM using 10 xGenomics platform. We used unsupervised clustering of cells and cluster visualization based on the gene expression profiles, and validated the protein and cytokines by ELISA analysis. Results We revealed for the first time 33 monocyte populations across the CSF cells and PBMCs of children with TBM. Within these populations, we saw that CD4_C04 cells with Th17 and Th1 phenotypes and Macro_C01 cells with a microglia phenotype, were enriched in the CSF. Lineage tracking analysis of monocyte populations revealed myeloid cell populations, as well as subsets of CD4 and CD8 T-cell populations with distinct effector functions. Importantly, we discovered that complement-activated microglial Macro_C01 cells are associated with a neuroinflammatory response that leads to persistent meningitis. Consistently, we saw an increase in complement protein (C1Q), inflammatory markers (CRP) and inflammatory factor (TNF-α and IL-6) in CSF cells but not blood. Finally, we inferred that Macro_C01 cells recruit CD4_C04 cells through CXCL16/CXCR6. Discussion We proposed that the microglial Macro_C01 subset activates complement and interacts with the CD4_C04 cell subset to amplify inflammatory signals, which could potentially contribute to augment inflammatory signals, resulting in hyperinflammation and an immune response elicited by Mtb-infected tissues.
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Affiliation(s)
- Siwei Mo
- Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing Key Laboratory of Pediatrics, Chongqing, China
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Chenyan Shi
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
- School of Public Health, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Yi Cai
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Maozhu Xu
- Maternal and Child Care Health Hospital of Zunyi City, Zunyi, Guizhou, China
| | - Hongmei Xu
- Department of Infectious Diseases, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yuzhong Xu
- Department of Clinical Laboratory, Shenzhen Baoan Hospital, The Second Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, China
| | - Kehong Zhang
- Department of Clinical Laboratory, Shenzhen Baoan Hospital, The Second Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, China
| | - Yue Zhang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Jiao Liu
- Pediatric Research Institute, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Siyi Che
- Department of Radiology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Xiangyu Liu
- Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Chaonan Xing
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Xiaoru Long
- Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Xinchun Chen
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Enmei Liu
- Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing Key Laboratory of Pediatrics, Chongqing, China
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Ijaz A, Broere F, Rutten VPMG, Jansen CA, Veldhuizen EJA. Perforin and granzyme A release as novel tool to measure NK cell activation in chickens. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 149:105047. [PMID: 37625470 DOI: 10.1016/j.dci.2023.105047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Natural killer (NK) cells are cytotoxic lymphocytes that are present in the circulation but also in many organs including spleen and gut, where they play an important role in the defense against infections. Interaction of NK cells with target cells leads to degranulation, which results in the release of perforin and granzymes in the direct vicinity of the target cell. Chicken NK cells have many characteristics similar to their mammalian counterparts and based on similarities with studies on human NK cells, surface expression of CD107 was always presumed to correlate with granule release. However, proof of this degranulation or in fact the actual presence of perforin (PFN) and granzyme A (GrA) in chicken NK cells and their release upon activation is lacking. Therefore, the purpose of the present study was to determine the presence of perforin and granzyme A in primary chicken NK cells and to measure their release upon degranulation, as an additional tool to study the function of chicken NK cells. Using human specific antibodies against PFN and GrA in fluorescent and confocal microscopy resulted in staining in chicken NK cells. The presence of PFN and GrA was also confirmed by Western blot analyses and its gene expression by PCR. Stimulation of NK cells with the pectin SPE6 followed by flow cytometry resulted in reduced levels of intracellular PFN and GrA, suggesting release of PFN and GrA. Expression of PFN and GrA reversely correlated with increased surface expression of the lysosomal marker CD107. Finally it was shown that the supernatant of activated NK cells, containing the NK cell granule content including PFN and GrA, was able to kill Escherichia coli. This study correlates PFN and GrA release to activation of chicken NK cells and establishes an additional tool to study activity of cytotoxic lymphocytes in chickens.
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Affiliation(s)
- Adil Ijaz
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Femke Broere
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Victor P M G Rutten
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands; Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Christine A Jansen
- Cell Biology and Immunology Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, the Netherlands
| | - Edwin J A Veldhuizen
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
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Kaufmann SHE. Vaccine development against tuberculosis before and after Covid-19. Front Immunol 2023; 14:1273938. [PMID: 38035095 PMCID: PMC10684952 DOI: 10.3389/fimmu.2023.1273938] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/16/2023] [Indexed: 12/02/2023] Open
Abstract
Coronavirus disease (Covid-19) has not only shaped awareness of the impact of infectious diseases on global health. It has also provided instructive lessons for better prevention strategies against new and current infectious diseases of major importance. Tuberculosis (TB) is a major current health threat caused by Mycobacterium tuberculosis (Mtb) which has claimed more lives than any other pathogen over the last few centuries. Hence, better intervention measures, notably novel vaccines, are urgently needed to accomplish the goal of the World Health Organization to end TB by 2030. This article describes how the research and development of TB vaccines can benefit from recent developments in the Covid-19 vaccine pipeline from research to clinical development and outlines how the field of TB research can pursue its own approaches. It begins with a brief discussion of major vaccine platforms in general terms followed by a short description of the most widely applied Covid-19 vaccines. Next, different vaccination regimes and particular hurdles for TB vaccine research and development are described. This specifically considers the complex immune mechanisms underlying protection and pathology in TB which involve innate as well as acquired immune mechanisms and strongly depend on fine tuning the response. A brief description of the TB vaccine candidates that have entered clinical trials follows. Finally, it discusses how experiences from Covid-19 vaccine research, development, and rollout can and have been applied to the TB vaccine pipeline, emphasizing similarities and dissimilarities.
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Affiliation(s)
- Stefan H. E. Kaufmann
- Max Planck Institute for Infection Biology, Berlin, Germany
- Systems Immunology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, TX, United States
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Zhang Z, Chen X, Li B, Xia T, Wu X, Wu C. Helicobacter pylori induces urease subunit B-specific CD8 + T cell responses in infected individuals via cytosolic pathway of cross-presentation. Helicobacter 2023; 28:e13005. [PMID: 37382428 DOI: 10.1111/hel.13005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/04/2023] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
BACKGROUND Urease subunit B (UreB), a conserved and key virulence factor of Helicobacter pylori (H. pylori), can induce the host CD4+ T cell immune responses to provide protection, but less is known regarding CD8+ T cell responses. The characteristics of H. pylori-specific CD8+ T cell responses and the mechanism underlying antigen processing and presentation pathways remain unclear. This study was focus on protective antigen recombinant UreB (rUreb) to detect specific CD8+ T cell responses in vitro and elucidate the mechanism of UreB antigen processing and presentation. METHODS The peripheral blood mononuclear cells (PBMCs) collected from H. pylori-infected individuals were stimulated with rUreB in vitro to detect specific CD8+ T cell responses after co-culture with rUreB-pulsed autologous hMDCs. Through blocking assay, we investigated the potential pathway of UreB antigen processing and presentation via the cytosolic pathway or vacuolar pathway. The cytokines production of UreB specific CD8+ T cell were evaluated as well. RESULTS We demonstrated UreB can induce specific CD8+ T cell immune responses in H. pylori infected individuals. Importantly, we characterized that UreB were mainly processed by proteasome instead of lysosomal proteases and presented through cytosolic pathway of cross-presentation, which requires endoplasmic reticulum-Golgi transport and newly synthesized MHC-I molecules, to induce functional-specific CD8+ T cell (IFN-γ + TNF-α + Grz A+ Grz B+) responses. CONCLUSIONS These results suggest that H. pylori UreB induces specific CD8+ T cell responses through cytosolic pathway of cross-presentation in infected individuals.
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Affiliation(s)
- Zelin Zhang
- Department of Laboratory Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xingchi Chen
- Department of Laboratory Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Bin Li
- Department of Laboratory Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Tingting Xia
- Department of Laboratory Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xiaobin Wu
- Department of Gastrointestinal Surgery, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Chao Wu
- Department of Laboratory Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
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Yang X, Yan J, Xue Y, Sun Q, Zhang Y, Guo R, Wang C, Li X, Liang Q, Wu H, Wang C, Liao X, Long S, Zheng M, Wei R, Zhang H, Liu Y, Che N, Luu LDW, Pan J, Wang G, Wang Y. Single-cell profiling reveals distinct immune response landscapes in tuberculous pleural effusion and non-TPE. Front Immunol 2023; 14:1191357. [PMID: 37435066 PMCID: PMC10331301 DOI: 10.3389/fimmu.2023.1191357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/30/2023] [Indexed: 07/13/2023] Open
Abstract
Background Tuberculosis (TB) is caused by Mycobacterium tuberculosis (Mtb) and remains a major health threat worldwide. However, a detailed understanding of the immune cells and inflammatory mediators in Mtb-infected tissues is still lacking. Tuberculous pleural effusion (TPE), which is characterized by an influx of immune cells to the pleural space, is thus a suitable platform for dissecting complex tissue responses to Mtb infection. Methods We employed singe-cell RNA sequencing to 10 pleural fluid (PF) samples from 6 patients with TPE and 4 non-TPEs including 2 samples from patients with TSPE (transudative pleural effusion) and 2 samples with MPE (malignant pleural effusion). Result Compared to TSPE and MPE, TPE displayed obvious difference in the abundance of major cell types (e.g., NK, CD4+T, Macrophages), which showed notable associations with disease type. Further analyses revealed that the CD4 lymphocyte population in TPE favored a Th1 and Th17 response. Tumor necrosis factors (TNF)-, and XIAP related factor 1 (XAF1)-pathways induced T cell apoptosis in patients with TPE. Immune exhaustion in NK cells was an important feature in TPE. Myeloid cells in TPE displayed stronger functional capacity for phagocytosis, antigen presentation and IFN-γ response, than TSPE and MPE. Systemic elevation of inflammatory response genes and pro-inflammatory cytokines were mainly driven by macrophages in patients with TPE. Conclusion We provide a tissue immune landscape of PF immune cells, and revealed a distinct local immune response in TPE and non-TPE (TSPE and MPE). These findings will improve our understanding of local TB immunopathogenesis and provide potential targets for TB therapy.
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Affiliation(s)
- Xinting Yang
- Tuberculosis Department, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Jun Yan
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Yu Xue
- Department of Emergency, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Qing Sun
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory for Drug-Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Yun Zhang
- Tuberculosis Department, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Ru Guo
- Tuberculosis Department, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Chaohong Wang
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Xuelian Li
- Tuberculosis Department, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Qingtao Liang
- Tuberculosis Department, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Hangyu Wu
- Heart Center, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Chong Wang
- Heart Center, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Xinlei Liao
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Sibo Long
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Maike Zheng
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Rongrong Wei
- Biobank, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Haoran Zhang
- Biobank, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Yi Liu
- Biobank, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Nanying Che
- Biobank, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | | | - Junhua Pan
- Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Guirong Wang
- Department of Clinical Laboratory, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Yi Wang
- Experimental Research Center, Capital Institute of Pediatrics, Beijing, China
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Leddy O, White FM, Bryson BD. Immunopeptidomics reveals determinants of Mycobacterium tuberculosis antigen presentation on MHC class I. eLife 2023; 12:e84070. [PMID: 37073954 PMCID: PMC10159623 DOI: 10.7554/elife.84070] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 04/17/2023] [Indexed: 04/20/2023] Open
Abstract
CD8+ T cell recognition of Mycobacterium tuberculosis (Mtb)-specific peptides presented on major histocompatibility complex class I (MHC-I) contributes to immunity to tuberculosis (TB), but the principles that govern presentation of Mtb antigens on MHC-I are incompletely understood. In this study, mass spectrometry (MS) analysis of the MHC-I repertoire of Mtb-infected primary human macrophages reveals that substrates of Mtb's type VII secretion systems (T7SS) are overrepresented among Mtb-derived peptides presented on MHC-I. Quantitative, targeted MS shows that ESX-1 activity is required for presentation of Mtb peptides derived from both ESX-1 substrates and ESX-5 substrates on MHC-I, consistent with a model in which proteins secreted by multiple T7SSs access a cytosolic antigen processing pathway via ESX-1-mediated phagosome permeabilization. Chemical inhibition of proteasome activity, lysosomal acidification, or cysteine cathepsin activity did not block presentation of Mtb antigens on MHC-I, suggesting involvement of other proteolytic pathways or redundancy among multiple pathways. Our study identifies Mtb antigens presented on MHC-I that could serve as targets for TB vaccines, and reveals how the activity of multiple T7SSs interacts to contribute to presentation of Mtb antigens on MHC-I.
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Affiliation(s)
- Owen Leddy
- Department of Biological Engineering, Massachusetts Institute of TechnologyCambridgeUnited States
- Ragon Institute of Massachusetts General Hospital, Harvard, and MITCambridgeUnited States
- Koch Institute for Integrative Cancer ResearchCambridgeUnited States
| | - Forest M White
- Department of Biological Engineering, Massachusetts Institute of TechnologyCambridgeUnited States
- Koch Institute for Integrative Cancer ResearchCambridgeUnited States
- Center for Precision Cancer MedicineCambridgeUnited States
| | - Bryan D Bryson
- Department of Biological Engineering, Massachusetts Institute of TechnologyCambridgeUnited States
- Ragon Institute of Massachusetts General Hospital, Harvard, and MITCambridgeUnited States
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Chen J, Xu J, Niu Y, Yao L, Liu X, Chen H, Chen S, Wu M, Yu X, Xu P. The elevated expression of LAG-3 on CD8+T cells correlates with disease severity of pulmonary TB. Microb Pathog 2023; 179:106089. [PMID: 37004963 DOI: 10.1016/j.micpath.2023.106089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/11/2023] [Accepted: 03/26/2023] [Indexed: 04/03/2023]
Abstract
OBJECTIVE Lymphocyte-activation gene 3 (LAG-3) plays an important role in regulating T-cell responses and inducing peripheral tolerance. Our aim in this study was to investigate the relationship between LAG-3 and active tuberculosis (ATB) and the impact of LAG-3 blockade on CD8+T cells. METHODS Flow cytometry was used to detect the expression of LAG-3 on CD4+T and CD8+T cells in the peripheral blood and bronchoalveolar lavage fluid from ATB patients and to explore the relationship between LAG-3 and ATB. RESULTS The expression of LAG-3 on CD4+T and CD8+T cells in ATB patients was increased (P < 0.001), and CD8+T cells with high expression of LAG-3 were associated with sputum culture results (P < 0.05). We further analyzed the relationship between the expression of LAG-3 in CD8+T cells and the severity of tuberculosis and found that the expression of LAG-3 on CD8+T cells in smear-positive tuberculosis patients was significantly higher than that in sputum smear-negative tuberculosis patients (P < 0.05). LAG-3 expression on CD8+T cells was negatively correlated with the presence of lung lesions (P < 0.05). After stimulation with a tuberculosis-specific antigen, the expression of LAG-3 on tuberculosis-specific CD8+T cells was also upregulated, and LAG-3-expressing CD8+T cells showed reduced production of IFN-γ, decreased activation, and lower proliferation, while the function of CD8+T cells was restored when LAG-3 signaling was blocked. CONCLUSIONS This study further explored the relationship between immune exhaustion caused by LAG-3 and immune escape of Mycobacterium tuberculosis and revealed that the elevated expression of LAG-3 on CD8+T cells correlates with functional defects of CD8+T cells and the severity of pulmonary TB.
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Affiliation(s)
- Jie Chen
- The Affiliation Infections Diseases Hospital, Suzhou Medical College of Soochow University, SuZhou, China
| | - Junchi Xu
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China.
| | - Yayan Niu
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China
| | - Lin Yao
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China
| | - Xuanmiao Liu
- The Affiliation Infections Diseases Hospital, Suzhou Medical College of Soochow University, SuZhou, China
| | - Hui Chen
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China
| | - Siyi Chen
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China
| | - Meiying Wu
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China.
| | - Xin Yu
- Department of Clinical Laboratory, The Fifth People's Hospital of Suzhou, Suzhou, China.
| | - Ping Xu
- The Affiliation Infections Diseases Hospital, Suzhou Medical College of Soochow University, SuZhou, China.
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Nadolinskaia NI, Kotliarova MS, Goncharenko AV. Fighting Tuberculosis: In Search of a BCG Replacement. Microorganisms 2022; 11:microorganisms11010051. [PMID: 36677343 PMCID: PMC9863999 DOI: 10.3390/microorganisms11010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Tuberculosis is one of the most threatening infectious diseases and represents an important and significant reason for mortality in high-burden regions. The only licensed vaccine, BCG, is hardly capable of establishing long-term tuberculosis protection and is highly variable in its effectiveness. Even after 100 years of BCG use and research, we still cannot unequivocally answer the question of which immune correlates of protection are crucial to prevent Mycobacterium tuberculosis (Mtb) infection or the progression of the disease. The development of a new vaccine against tuberculosis arises a nontrivial scientific challenge caused by several specific features of the intracellular lifestyle of Mtb and the ability of the pathogen to manipulate host immunity. The purpose of this review is to discuss promising strategies and the possibilities of creating a new vaccine that could replace BCG and provide greater protection. The considered approaches include supplementing mycobacterial strains with immunodominant antigens and genetic engineering aimed at altering the interaction between the bacterium and the host cell, such as the exit from the phagosome. Improved new vaccine strains based on BCG and Mtb undergoing clinical evaluation are also overviewed.
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Use of the Human Granulysin Transgenic Mice To Evaluate the Role of Granulysin Expression by CD8 T Cells in Immunity To Mycobacterium tuberculosis. mBio 2022; 13:e0302022. [PMID: 36409085 PMCID: PMC9765553 DOI: 10.1128/mbio.03020-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The cytotoxic granules of human NK and CD8 T cells contain the effector molecule granulysin. Although in vitro studies indicate that granulysin is bactericidal to Mycobacterium tuberculosis and human CD8 T cells restrict intracellular M. tuberculosis by granule exocytosis, the role of granulysin in cell-mediated immunity against infection is incompletely understood, in part because a granulysin gene ortholog is absent in mice. Transgenic mice that express human granulysin (GNLY-Tg) under the control of human regulatory DNA sequences permit the study of granulysin in vivo. We assessed whether granulysin expression by murine CD8 T cells enhances their control of M. tuberculosis infection. GNLY-Tg mice did not control pulmonary M. tuberculosis infection better than non-Tg control mice, and purified GNLY-Tg and non-Tg CD8 T cells had a similar ability to transfer protection to T cell deficient mice. Lung CD8 T cells from infected control and GNLY-transgenic mice similarly controlled intracellular M. tuberculosis growth in macrophages in vitro. Importantly, after M. tuberculosis infection of GNLY-Tg mice, granulysin was detected in NK cells but not in CD8 T cells. Only after prolonged in vitro stimulation could granulysin expression be detected in antigen-specific CD8 T cells. GNLY-Tg mice are an imperfect model to determine whether granulysin expression by CD8 T cells enhances immunity against M. tuberculosis. Better models expressing granulysin are needed to explore the role of this antimicrobial effector molecule in vivo. IMPORTANCE Human CD8 T cells express the antimicrobial peptide granulysin in their cytotoxic granules, and in vitro analysis suggest that it restricts growth of Mycobacterium tuberculosis and other intracellular pathogens. The murine model of tuberculosis cannot assess granulysin's role in vivo, as rodents lack the granulysin gene. A long-held hypothesis is that murine CD8 T cells inefficiently control M. tuberculosis infection because they lack granulysin. We used human granulysin transgenic (GNLY-Tg) mice to test this hypothesis. GNLY-Tg mice did not differ in their susceptibility to tuberculosis. However, granulysin expression by pulmonary CD8 T cells could not be detected after M. tuberculosis infection. As the pattern of granulysin expression in human CD8 T cells and GNLY-Tg mice seem to differ, GNLY-Tg mice are an imperfect model to study the role of granulysin. An improved model is needed to answer the importance of granulysin expression by CD8 T cells in different diseases.
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Immune cell interactions in tuberculosis. Cell 2022; 185:4682-4702. [PMID: 36493751 DOI: 10.1016/j.cell.2022.10.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/15/2022] [Accepted: 10/26/2022] [Indexed: 12/13/2022]
Abstract
Despite having been identified as the organism that causes tuberculosis in 1882, Mycobacterium tuberculosis has managed to still evade our understanding of the protective immune response against it, defying the development of an effective vaccine. Technology and novel experimental models have revealed much new knowledge, particularly with respect to the heterogeneity of the bacillus and the host response. This review focuses on certain immunological elements that have recently yielded exciting data and highlights the importance of taking a holistic approach to understanding the interaction of M. tuberculosis with the many host cells that contribute to the development of protective immunity.
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Correia-Neves M, Nigou J, Mousavian Z, Sundling C, Källenius G. Immunological hyporesponsiveness in tuberculosis: The role of mycobacterial glycolipids. Front Immunol 2022; 13:1035122. [PMID: 36544778 PMCID: PMC9761185 DOI: 10.3389/fimmu.2022.1035122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/25/2022] [Indexed: 12/09/2022] Open
Abstract
Glycolipids constitute a major part of the cell envelope of Mycobacterium tuberculosis (Mtb). They are potent immunomodulatory molecules recognized by several immune receptors like pattern recognition receptors such as TLR2, DC-SIGN and Dectin-2 on antigen-presenting cells and by T cell receptors on T lymphocytes. The Mtb glycolipids lipoarabinomannan (LAM) and its biosynthetic relatives, phosphatidylinositol mannosides (PIMs) and lipomannan (LM), as well as other Mtb glycolipids, such as phenolic glycolipids and sulfoglycolipids have the ability to modulate the immune response, stimulating or inhibiting a pro-inflammatory response. We explore here the downmodulating effect of Mtb glycolipids. A great proportion of the studies used in vitro approaches although in vivo infection with Mtb might also lead to a dampening of myeloid cell and T cell responses to Mtb glycolipids. This dampened response has been explored ex vivo with immune cells from peripheral blood from Mtb-infected individuals and in mouse models of infection. In addition to the dampening of the immune response caused by Mtb glycolipids, we discuss the hyporesponse to Mtb glycolipids caused by prolonged Mtb infection and/or exposure to Mtb antigens. Hyporesponse to LAM has been observed in myeloid cells from individuals with active and latent tuberculosis (TB). For some myeloid subsets, this effect is stronger in latent versus active TB. Since the immune response in individuals with latent TB represents a more protective profile compared to the one in patients with active TB, this suggests that downmodulation of myeloid cell functions by Mtb glycolipids may be beneficial for the host and protect against active TB disease. The mechanisms of this downmodulation, including tolerance through epigenetic modifications, are only partly explored.
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Affiliation(s)
- Margarida Correia-Neves
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal,Life and Health Sciences Research Institute/Biomaterials, Biodegradables and Biomimetics Research Group (ICVS/3B's), Portuguese (PT) Government Associate Laboratory, Braga, Portugal,Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Jérôme Nigou
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier, Toulouse, France
| | - Zaynab Mousavian
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden,School of Mathematics, Statistics, and Computer Science, College of Science, University of Tehran, Tehran, Iran,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christopher Sundling
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden,Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Gunilla Källenius
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden,*Correspondence: Gunilla Källenius,
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12
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Tian L, Zhou W, Wu X, Hu Z, Qiu L, Zhang H, Chen X, Zhang S, Lu Z. CTLs: Killers of intracellular bacteria. Front Cell Infect Microbiol 2022; 12:967679. [PMID: 36389159 PMCID: PMC9645434 DOI: 10.3389/fcimb.2022.967679] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/12/2022] [Indexed: 09/10/2023] Open
Abstract
Many microbial pathogens have evolved a range of capabilities to evade host immune defense mechanisms and to survive and multiply in host cells. The presence of host intracellular bacteria makes it difficult for specific antibodies to function. After the intracellular bacteria escape the attack of the innate immune system, such as phagocytes, they survive in cells, and then adaptive immunity comes into play. Cytotoxic T lymphocytes (CTLs) play an important role in eliminating intracellular bacteria. The regulation of key transcription factors could promote CD4+/CD8+ T cells to acquire cytolytic ability. The TCR-CD3 complex transduces activation signals generated by TCR recognition of antigen and promotes CTLs to generate multiple pathways to kill intracellular bacteria. In this review, the mechanism of CD4/CD8 CTLs differentiation and how CD4/CD8 CTLs kill intracellular bacteria are introduced. In addition, their application and prospects in the treatment of bacterial infections are discussed.
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Affiliation(s)
- Li Tian
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wei Zhou
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xianwei Wu
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhuannan Hu
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lei Qiu
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huiyong Zhang
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xue Chen
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Shaoyan Zhang
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhenhui Lu
- Institute of Respiratory Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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13
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Lyu M, Zhou Y, Chen Y, Lai H, Wang Y, Cheng Y, Li J, Peng W, Liu T, Jiang X, Li M, Zhao Z, Ying B. Exploring the eligibility of all reported lipoarabinomannan-testing assays in different clinical situations: a systematic review and meta-analysis of 97 articles. Int J Infect Dis 2022; 125:19-34. [PMID: 36244601 DOI: 10.1016/j.ijid.2022.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/17/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVES How to choose proper lipoarabinomannan-testing assays for diagnosing tuberculosis (TB) in different populations baffles clinicians. This work assessed all reported lipoarabinomannan assays' performance and aimed to identify the eligibility of each assay and offer guidance for clinicians. METHODS We searched PubMed, Embase, and Web of Science until August 23, 2020. The risk of bias was evaluated by QADAS-2. Heterogeneity was evaluated by the Cochran Q test and I2. Sensitivity and specificity were pooled by a bivariate mixed model (register number: CRD42021270506). RESULTS A total of 97 articles, covering 144 trials, 16 assays, 45,679 participants, and eight sample types, were divided into five groups. Electrochemiluminescence (ECL) had a sensitivity of 65%, specificity of 92%, and an area under curve (AUC) of 0.85 in diagnosing pulmonary TB in adults. ECL showed a promising diagnostic ability (sensitivity: 78%; specificity: 88%; AUC: 0.88) in patients with HIV, especially for urine detection (sensitivity: 90%; specificity: 89%; AUC: 0.95). The enzyme-linked immune assay showed a preference for diagnosing TB in Asians and Africans, especially in Africans who were smear-positive (sensitivity: 80%; specificity: 88%; AUC: 0.91). CONCLUSION ECL was recommended for diagnosing pulmonary TB in adults, especially for TB/HIV co-infection. Taking urine as a sample further enhanced ECL's diagnostic performance. Enzyme-linked immune assay was recommended as an additional TB-related detection for smear-positive Africans.
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Affiliation(s)
- Mengyuan Lyu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Yanbing Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Yi Chen
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Hongli Lai
- West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Yili Wang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Yuhui Cheng
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Jing Li
- Department of Laboratory Medicine, PanZhihua Central Hospital, PanZhihua, 617067, China
| | - Wu Peng
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Tangyuheng Liu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Xin Jiang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Mei Li
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Zhenzhen Zhao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610044, China; West China School of Medicine, Sichuan University, Chengdu, 610044, China.
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14
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Kim H, Shin SJ. Pathological and protective roles of dendritic cells in Mycobacterium tuberculosis infection: Interaction between host immune responses and pathogen evasion. Front Cell Infect Microbiol 2022; 12:891878. [PMID: 35967869 PMCID: PMC9366614 DOI: 10.3389/fcimb.2022.891878] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Dendritic cells (DCs) are principal defense components that play multifactorial roles in translating innate immune responses to adaptive immunity in Mycobacterium tuberculosis (Mtb) infections. The heterogeneous nature of DC subsets follows their altered functions by interacting with other immune cells, Mtb, and its products, enhancing host defense mechanisms or facilitating pathogen evasion. Thus, a better understanding of the immune responses initiated, promoted, and amplified or inhibited by DCs in Mtb infection is an essential step in developing anti-tuberculosis (TB) control measures, such as host-directed adjunctive therapy and anti-TB vaccines. This review summarizes the recent advances in salient DC subsets, including their phenotypic classification, cytokine profiles, functional alterations according to disease stages and environments, and consequent TB outcomes. A comprehensive overview of the role of DCs from various perspectives enables a deeper understanding of TB pathogenesis and could be useful in developing DC-based vaccines and immunotherapies.
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15
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Cai Y, Wang Y, Shi C, Dai Y, Li F, Xu Y, Zhang P, Kong F, Deng G, Wen Z, Zhou Q, Kang BC, Singhal A, Yang Q, Feng CG, Chen X. Single-cell immune profiling reveals functional diversity of T cells in tuberculous pleural effusion. J Exp Med 2022; 219:212978. [PMID: 35061012 PMCID: PMC8789099 DOI: 10.1084/jem.20211777] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 11/04/2021] [Accepted: 12/23/2021] [Indexed: 12/31/2022] Open
Abstract
Orchestration of an effective T lymphocyte response at infection sites is critical for protection against Mycobacterium tuberculosis (Mtb) infection. However, the local T cell immunity landscape in human tuberculosis is poorly defined. Tuberculous pleural effusion (TPE), caused by Mtb, is characterized by an influx of leukocytes to the pleural space, providing a platform suitable for delineating complex tissue responses to Mtb infection. Using single-cell transcriptomics and T cell receptor sequencing, we analyzed mononuclear cell populations in paired pleural fluid and peripheral blood of TPE patients. While all major cell clusters were present in both tissues, their relative proportions varied significantly by anatomic location. Lineage tracking analysis revealed subsets of CD8 and CD4 T cell populations with distinct effector functions specifically expanded at pleural sites. Granzyme K–expressing CD8 T cells were preferentially enriched and clonally expanded in pleural fluid from TPE, suggesting that they are involved in the pathogenesis of the disease. The findings collectively reveal the landscape of local T cell immunity in tuberculosis.
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Affiliation(s)
- Yi Cai
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
| | - Yejun Wang
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
| | - Chenyan Shi
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
| | - Youchao Dai
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
| | - Fuxiang Li
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
| | - Yuzhong Xu
- Department of Clinical Laboratory, Shenzhen Baoan hospital, Shenzhen, China
| | - Peize Zhang
- Guangdong Key Lab for Diagnosis & Treatment of Emerging Infectious Diseases, Shenzhen Third People’s Hospital, Shenzhen, China
| | | | - Guofang Deng
- Guangdong Key Lab for Diagnosis & Treatment of Emerging Infectious Diseases, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Zhihua Wen
- Shenzhen University and Yuebei Second People’s Hospital Joint Lab, Yuebei Second People's Hospital, Shaoguan, China
| | - Qi Zhou
- Analytical Biosciences Limited, Beijing, China
| | | | - Amit Singhal
- Infectious Diseases Labs, Agency for Science, Technology and Research, Singapore
| | - Qianting Yang
- Guangdong Key Lab for Diagnosis & Treatment of Emerging Infectious Diseases, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Carl G. Feng
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
- Immunology and Host Defense Group, School of Medical Sciences, Faculty of Medicine and Health, the University of Sydney, Sydney, New South Wales, Australia
| | - Xinchun Chen
- Guangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China
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16
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Qin S, Chen R, Jiang Y, Zhu H, Chen L, Chen Y, Shen M, Lin X. Multifunctional T cell response in active pulmonary tuberculosis patients. Int Immunopharmacol 2021; 99:107898. [PMID: 34333359 DOI: 10.1016/j.intimp.2021.107898] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/09/2021] [Accepted: 06/15/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Tuberculosis still threatens human health. We aimed to investigate the T cell immune status and the role of multifunctional T cells in pulmonary tuberculosis patients. METHODS Thirty active pulmonary tuberculosis (APTB) patients, 30 latent tuberculosis infection (LTBI) patients, 25 cured pulmonary tuberculosis (CPTB) patients and 25 healthy controls (HCs) enrolled in this study. Flow cytometer for detecting T cell phenotype and function. CBA Flex Set was used to measure chemokine. RESULTS Compared with HCs and LTBI patients, APTB patients had fewer CD4+ T and CD8+ T cells, but the expression of granzyme A, granzyme B and perforin on CD8+ T cells increased. Compared to LTBI and CPTB patients, Mycobacterium tuberculosis-specific CD8+ T cells in APTB patients appeared to be more differentiated CD45RA-CCR7- cells, and there were more multifunctional CD4+ T and CD8+ T cells. Importantly, the frequency of multifunctional CD4+ T cells in the pleural fluid of APTB patients was higher than that of peripheral blood. And the proportion of multifunctional CD4+ T cells expressing the migration receptor CXCR3 in the peripheral blood of APTB patients decreased, while the concentrations of its ligands, chemokine MIG, IP-10 and I-TAC increased significantly in plasma, especially in pleural fluid. CONCLUSIONS Decreased T lymphocytes in APTB patients may cause compensatory activation of CD8+ T cells. Multifunctional CD4+ T cells in peripheral blood could migrate to the lungs under the action of CXCR3 and associated chemokine. Multifunctional CD4+ T cells and Multifunctional CD8+ T cells were of great significance in monitoring disease treatment.
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Affiliation(s)
- Shuang Qin
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Ruiqi Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Yujie Jiang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Hengyue Zhu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Lijiang Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Yanfan Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Mo Shen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Xiangyang Lin
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
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17
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Namdev P, Patel S, Sparling B, Garg A. Monocytic-Myeloid Derived Suppressor Cells of HIV-Infected Individuals With Viral Suppression Exhibit Suppressed Innate Immunity to Mycobacterium tuberculosis. Front Immunol 2021; 12:647019. [PMID: 33995365 PMCID: PMC8113814 DOI: 10.3389/fimmu.2021.647019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/06/2021] [Indexed: 12/22/2022] Open
Abstract
Tuberculosis can occur during any stage of Human Immunodeficiency virus 1 (HIV) -infection including times when CD4+ T cell numbers have reconstituted and viral replication suppressed. We have previously shown that CD11b+CD33+CD14+HLA-DR-/lo monocytic myeloid-derived suppressor cells (MDSC) persist in HIV-infected individuals on combined anti-retroviral therapy (cART) and with virologic suppression. The response of MDSC to Mycobacterium tuberculosis (Mtb) is not known. In this study, we compared the anti-mycobacterial activity of MDSC isolated from HIV –infected individuals on cART with virologic suppression (HIV MDSC) and HIV-uninfected healthy controls (HIV (-) MDSC). Compared to HIV (-) MDSC, HIV MDSC produced significantly less quantities of anti-mycobacterial cytokines IL-12p70 and TNFα, and reactive oxygen species when cultured with infectious Mtb or Mtb antigens. Furthermore, HIV MDSC showed changes in the Toll-like receptor and IL-27 signaling, including reduced expression of MyD88 and higher levels of IL-27. Neutralizing IL-27 and overexpression of MyD88 synergistically controlled intracellular replication of Mtb in HIV MDSC. These results demonstrate that MDSC in fully suppressed HIV-infected individuals are permissive to Mtb and exhibit downregulated anti-mycobacterial innate immune activity through mechanisms involving IL-27 and TLR signaling. Our findings suggest MDSC as novel mediators of tuberculosis in HIV-Mtb co-infected individuals with virologic suppression.
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Affiliation(s)
- Priyanka Namdev
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Shiv Patel
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
| | - Brandi Sparling
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Ankita Garg
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
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18
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Menardo F, Rutaihwa LK, Zwyer M, Borrell S, Comas I, Conceição EC, Coscolla M, Cox H, Joloba M, Dou HY, Feldmann J, Fenner L, Fyfe J, Gao Q, García de Viedma D, Garcia-Basteiro AL, Gygli SM, Hella J, Hiza H, Jugheli L, Kamwela L, Kato-Maeda M, Liu Q, Ley SD, Loiseau C, Mahasirimongkol S, Malla B, Palittapongarnpim P, Rakotosamimanana N, Rasolofo V, Reinhard M, Reither K, Sasamalo M, Silva Duarte R, Sola C, Suffys P, Batista Lima KV, Yeboah-Manu D, Beisel C, Brites D, Gagneux S. Local adaptation in populations of Mycobacterium tuberculosis endemic to the Indian Ocean Rim. F1000Res 2021; 10:60. [PMID: 33732436 PMCID: PMC7921886 DOI: 10.12688/f1000research.28318.2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Lineage 1 (L1) and 3 (L3) are two lineages of the Mycobacterium tuberculosis complex (MTBC) causing tuberculosis (TB) in humans. L1 and L3 are prevalent around the rim of the Indian Ocean, the region that accounts for most of the world's new TB cases. Despite their relevance for this region, L1 and L3 remain understudied. Methods: We analyzed 2,938 L1 and 2,030 L3 whole genome sequences originating from 69 countries. We reconstructed the evolutionary history of these two lineages and identified genes under positive selection. Results: We found a strongly asymmetric pattern of migration from South Asia toward neighboring regions, highlighting the historical role of South Asia in the dispersion of L1 and L3. Moreover, we found that several genes were under positive selection, including genes involved in virulence and resistance to antibiotics. For L1 we identified signatures of local adaptation at the esxH locus, a gene coding for a secreted effector that targets the human endosomal sorting complex, and is included in several vaccine candidates. Conclusions: Our study highlights the importance of genetic diversity in the MTBC, and sheds new light on two of the most important MTBC lineages affecting humans.
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Affiliation(s)
- Fabrizio Menardo
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Liliana K Rutaihwa
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Michaela Zwyer
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Sonia Borrell
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Iñaki Comas
- Institute of Biomedicine of Valencia, Valencia, Spain
| | - Emilyn Costa Conceição
- Instituto de Microbiologia, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Helen Cox
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Moses Joloba
- Department of Medical Microbiology, Makerere University, Kampala, Uganda
| | - Horng-Yunn Dou
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institute, Zhunan, Taiwan
| | - Julia Feldmann
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Lukas Fenner
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Institute for Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Janet Fyfe
- Victorian Infectious Diseases Reference Laboratory, Melbourne, Australia
| | - Qian Gao
- Institute of Medical Microbiology, School of Basic Medical Science of Fudan University, Shanghai, China
| | - Darío García de Viedma
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,CIBER Enfermedades Respiratorias, Madrid, Spain.,Servicio de Microbiología Clínica y Enfermedades Infecciosas, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Alberto L Garcia-Basteiro
- Barcelona Institute for Global Health, Barcelona, Spain.,Centro de Investigação em Saúde de Manhiça, Maputo, Mozambique
| | - Sebastian M Gygli
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Jerry Hella
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Ifakara Health Institute, Bagamoyo, Tanzania
| | - Hellen Hiza
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Levan Jugheli
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Lujeko Kamwela
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Ifakara Health Institute, Bagamoyo, Tanzania
| | | | - Qingyun Liu
- Institute of Medical Microbiology, School of Basic Medical Science of Fudan University, Shanghai, China
| | - Serej D Ley
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Papua New Guinea Institute of Medical Research, Goroka, Papua New Guinea
| | - Chloe Loiseau
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Surakameth Mahasirimongkol
- Department of Microbiology, Mahidol University, Bangkok, Thailand.,National Science and Technology Development Agency, Bangkok, Thailand
| | - Bijaya Malla
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Prasit Palittapongarnpim
- Department of Microbiology, Mahidol University, Bangkok, Thailand.,National Science and Technology Development Agency, Bangkok, Thailand
| | | | | | - Miriam Reinhard
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Klaus Reither
- University of Basel, Basel, Switzerland.,Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland
| | - Mohamed Sasamalo
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Ifakara Health Institute, Bagamoyo, Tanzania
| | - Rafael Silva Duarte
- Instituto de Microbiologia, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christophe Sola
- Université Paris-Saclay, Paris, France.,INSERM-Université de Paris, Paris, France
| | - Philip Suffys
- Laboratório de Biologia Molecular Aplicada a Micobactérias, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Karla Valeria Batista Lima
- Centro de Ciências Biológicas e da Saúde, Universidade do Estado do Pará, Belém, Brazil.,Instituto Evandro Chagas, Ananindeua, Brazil
| | - Dorothy Yeboah-Manu
- Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Christian Beisel
- Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland
| | - Daniela Brites
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Sebastien Gagneux
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
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19
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Kinsella RL, Zhu DX, Harrison GA, Mayer Bridwell AE, Prusa J, Chavez SM, Stallings CL. Perspectives and Advances in the Understanding of Tuberculosis. ANNUAL REVIEW OF PATHOLOGY 2021; 16:377-408. [PMID: 33497258 DOI: 10.1146/annurev-pathol-042120-032916] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), remains a leading cause of death due to infection in humans. To more effectively combat this pandemic, many aspects of TB control must be developed, including better point of care diagnostics, shorter and safer drug regimens, and a protective vaccine. To address all these areas of need, better understanding of the pathogen, host responses, and clinical manifestations of the disease is required. Recently, the application of cutting-edge technologies to the study of Mtb pathogenesis has resulted in significant advances in basic biology, vaccine development, and antibiotic discovery. This leaves us in an exciting era of Mtb research in which our understanding of this deadly infection is improving at a faster rate than ever, and renews hope in our fight to end TB. In this review, we reflect on what is known regarding Mtb pathogenesis, highlighting recent breakthroughs that will provide leverage for the next leaps forward in the field.
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Affiliation(s)
- Rachel L Kinsella
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Dennis X Zhu
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Gregory A Harrison
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Anne E Mayer Bridwell
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Jerome Prusa
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Sthefany M Chavez
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
| | - Christina L Stallings
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA;
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20
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Sutiwisesak R, Hicks ND, Boyce S, Murphy KC, Papavinasasundaram K, Carpenter SM, Boucau J, Joshi N, Le Gall S, Fortune SM, Sassetti CM, Behar SM. A natural polymorphism of Mycobacterium tuberculosis in the esxH gene disrupts immunodomination by the TB10.4-specific CD8 T cell response. PLoS Pathog 2020; 16:e1009000. [PMID: 33075106 PMCID: PMC7597557 DOI: 10.1371/journal.ppat.1009000] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 10/29/2020] [Accepted: 09/23/2020] [Indexed: 12/20/2022] Open
Abstract
CD8 T cells provide limited protection against Mycobacterium
tuberculosis (Mtb) infection in the mouse model. As Mtb causes
chronic infection in mice and humans, we hypothesize that Mtb impairs T cell
responses as an immune evasion strategy. TB10.4 is an immunodominant antigen in
people, nonhuman primates, and mice, which is encoded by the
esxH gene. In C57BL/6 mice, 30–50% of pulmonary CD8 T cells
recognize the TB10.44−11 epitope. However, TB10.4-specific CD8 T
cells fail to recognize Mtb-infected macrophages. We speculate that Mtb elicits
immunodominant CD8 T cell responses to antigens that are inefficiently presented
by infected cells, thereby focusing CD8 T cells on nonprotective antigens. Here,
we leverage naturally occurring polymorphisms in esxH, which
frequently occur in lineage 1 strains, to test this “decoy hypothesis”. Using
the clinical isolate 667, which contains an EsxHA10T polymorphism, we
observe a drastic change in the hierarchy of CD8 T cells. Using isogenic
Erd.EsxHA10T and Erd.EsxHWT strains, we prove that
this polymorphism alters the hierarchy of immunodominant CD8 T cell responses.
Our data are best explained by immunodomination, a mechanism by which
competition for APC leads to dominant responses suppressing subdominant
responses. These results were surprising as the variant epitope can bind to
H2-Kb and is recognized by TB10.4-specific CD8 T cells. The
dramatic change in TB10.4-specific CD8 responses resulted from increased
proteolytic degradation of A10T variant, which destroyed the
TB10.44-11epitope. Importantly, this polymorphism affected T cell
priming and recognition of infected cells. These data support a model in which
nonprotective CD8 T cells become immunodominant and suppress subdominant
responses. Thus, polymorphisms between clinical Mtb strains, and BCG or H37Rv
sequence-based vaccines could lead to a mismatch between T cells that are primed
by vaccines and the epitopes presented by infected cells. Reprograming host
immune responses should be considered in the future design of vaccines. An important question for vaccine developers is the relative potency of CD4 vs.
CD8 T cells against Mtb, as strategies differ for eliciting these different T
cell subsets. Despite robust antigen-specific pulmonary CD8 T cell responses,
CD4 T cells mediate more protection than CD8 T cells in the murine model. Most
CD8 T cells recognize a single antigen, TB10.4, which is encoded by the
esxH gene. Based on finding that
TB10.44−11-specific CD8 T cells poorly recognize Mtb-infected
macrophages, we hypothesized that Mtb evades detection by CD8 T cells and
focuses the CD8 T cell response on non-protective antigen. We termed these
antigens “decoy antigens.” To test this hypothesis, we took advantage of a
natural variant of the esxH gene, which contains an A10T
polymorphism within the TB10.44−11 epitope. This polymorphism
drastically alters the hierarchy of CD8 T cell responses elicited by Mtb. These
data suggest that immunodomination by the TB10.4 epitope acts to suppress
subdominant CD8 T cell responses to other Mtb antigens, impairing the CD8 T cell
response to other Mtb antigens, some of which might be presented by Mtb-infected
macrophages and be targets of protective immunity. Importantly, this single
amino acid polymorphism, which does not significantly alter MHC-binding or T
cell recognition, alters the half-life of the epitope and consequently, has a
profound effect on CD8 T cell priming and recognition of infected cells. These
data also provide a mechanism that could be exploited to manipulate the
hierarchy of immunodominant responses.
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Affiliation(s)
- Rujapak Sutiwisesak
- Immunology and Microbiology Program, Graduate School of Biomedical
Science, University of Massachusetts Medical School, Worcester, Massachusetts,
United States of America
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Nathan D. Hicks
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan
School of Public Health, Boston, Massachusetts, United States of
America
| | - Shayla Boyce
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Kenan C. Murphy
- Immunology and Microbiology Program, Graduate School of Biomedical
Science, University of Massachusetts Medical School, Worcester, Massachusetts,
United States of America
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Kadamba Papavinasasundaram
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Stephen M. Carpenter
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Julie Boucau
- Ragon Institute of Massachusetts General Hospital, Massachusetts
Institute of Technology and Harvard University, Cambridge, MA, United States of
America
| | - Neelambari Joshi
- Ragon Institute of Massachusetts General Hospital, Massachusetts
Institute of Technology and Harvard University, Cambridge, MA, United States of
America
| | - Sylvie Le Gall
- Ragon Institute of Massachusetts General Hospital, Massachusetts
Institute of Technology and Harvard University, Cambridge, MA, United States of
America
| | - Sarah M. Fortune
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan
School of Public Health, Boston, Massachusetts, United States of
America
| | - Christopher M. Sassetti
- Immunology and Microbiology Program, Graduate School of Biomedical
Science, University of Massachusetts Medical School, Worcester, Massachusetts,
United States of America
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
| | - Samuel M. Behar
- Immunology and Microbiology Program, Graduate School of Biomedical
Science, University of Massachusetts Medical School, Worcester, Massachusetts,
United States of America
- Department of Microbiology and Physiological Systems, University of
Massachusetts Medical School, Worcester, Massachusetts, United States of
America
- * E-mail:
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21
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Kathamuthu GR, Moideen K, Sridhar R, Baskaran D, Babu S. Diminished Frequencies of Cytotoxic Marker Expressing T- and NK Cells at the Site of Mycobacterium tuberculosis Infection. Front Immunol 2020; 11:585293. [PMID: 33101317 PMCID: PMC7546427 DOI: 10.3389/fimmu.2020.585293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/07/2020] [Indexed: 11/25/2022] Open
Abstract
Tuberculous lymphadenitis (TBL) individuals exhibit reduced frequencies of CD8+ T cells expressing cytotoxic markers in peripheral blood. However, the frequencies of cytotoxic marker expressing CD4+, CD8+ T cells, and NK cells at the site of infection is not known. Therefore, we measured the baseline and mycobacterial antigen specific frequencies of cytotoxic markers expressing CD4+, CD8+ T cells, and NK cells in the LN (n = 18) and whole blood (n = 10) of TBL individuals. TBL LN is associated with lower frequencies of CD4+ T cells expressing cytotoxic markers (Granzyme B, CD107a) compared to peripheral blood at baseline and in response to PPD, ESAT-6, and CFP-10 antigen stimulation. Similarly, lower frequencies of CD8+ T cells expressing cytotoxic markers (Perforin, Granzyme B, and CD107a) were also present in the TBL LN at baseline and following (except perforin) antigen stimulation. Finally, at baseline and after antigen (PPD, ESAT-6, and CFP-10) stimulation, frequencies of NK cells expressing cytotoxic markers were also significantly lower in TBL LN compared to whole blood. Hence, TBL is characterized by diminished frequencies of cytotoxic marker expressing CD4+, CD8+ T cells, and NK cells at the site of infection, which might reflect the lack of protective immune responses at the site of Mycobacterium tuberculosis infection.
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Affiliation(s)
- Gokul Raj Kathamuthu
- International Center for Excellence in Research, National Institutes of Health, National Institute for Research in Tuberculosis, Chennai, India.,National Institute for Research in Tuberculosis (NIRT), Chennai, India
| | - Kadar Moideen
- International Center for Excellence in Research, National Institutes of Health, National Institute for Research in Tuberculosis, Chennai, India
| | | | - Dhanaraj Baskaran
- National Institute for Research in Tuberculosis (NIRT), Chennai, India
| | - Subash Babu
- International Center for Excellence in Research, National Institutes of Health, National Institute for Research in Tuberculosis, Chennai, India.,Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
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22
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Cai Q, Shen X, Li H, Yao C, Sun N, Wang J, Wu H, Yuan C, Xiang J, Xiang Y. Diagnostic performance of culture filtered protein 10-specific perforin in pediatric patients with active tuberculosis. J Clin Lab Anal 2020; 34:e23477. [PMID: 32671908 PMCID: PMC7676199 DOI: 10.1002/jcla.23477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 12/12/2022] Open
Abstract
Background Mycobacterium tuberculosis (Mtb)‐specific perforin were significantly increased in patients with tuberculosis. This study aims to evaluate the diagnosis value of Mtb‐specific perforin in pediatric patients with tuberculosis. Methods Diagnostic performance of perforin levels induced by 6‐kDa early secreted antigen target (ESAT6) or culture filtered protein 10 (CFP10) were evaluated in eighty‐six samples from children participants by receiver operating characteristic curve analysis. Flow cytometry was used to detect the expression of perforin and INF‐γ of CD4+, CD8+ T cells in response to CFP10 stimulation. Results After ex vivo stimulation, levels of ESAT6/CFP10‐specific perforin in LTBI patients were significantly higher than active TB (ATB) patients, non‐tuberculosis infection (non‐TB), and health control (HC) individuals. The diagnostic efficacy of CFP10‐specific perforin for TB diagnosis was significantly higher than ESAT6‐specific perforin and T‐SPOT assay, and when 0.74 ng/mL was taken as the cutoff value, the sensitivity, specificity, and accuracy were 97.83%, 87.5%, and 93.02%. CFP10‐specific perforin in both CD4+ and CD8+ T cells were significantly higher in ATB patients compared to HCs and further increased in LTBI patients. However, INF‐γ was mainly secreted by CD4+ T cells and showed no significant difference between LTBI and ATB patients. In addition, CFP10‐specific perforin can effectively distinguish between ATB and LTBI with the cutoff value of 1.80 ng/mL. Sensitivity and specificity were 88.46% and 85.62%, respectively. Conclusions CFP10‐specific perforin may be used as a novel cellular immunity‐based diagnostic marker of pediatric patients with tuberculosis, and with the potential for discriminating ATB from LTBI.
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Affiliation(s)
- Qinzhen Cai
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Shen
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Hongze Li
- Department of Laboratory Medicine, Wuhan Jinyintan Hospital, Wuhan, China
| | - Cong Yao
- Health Care Department, Tongji Medical College, Wuhan Children's Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Na Sun
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Wang
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huan Wu
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunhui Yuan
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Xiang
- Department of Laboratory Medicine, Wuhan Jinyintan Hospital, Wuhan, China
| | - Yun Xiang
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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23
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Correia-Neves M, Sundling C, Cooper A, Källenius G. Lipoarabinomannan in Active and Passive Protection Against Tuberculosis. Front Immunol 2019; 10:1968. [PMID: 31572351 PMCID: PMC6749014 DOI: 10.3389/fimmu.2019.01968] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 08/05/2019] [Indexed: 12/14/2022] Open
Abstract
Glycolipids of the cell wall of Mycobacterium tuberculosis (Mtb) are important immunomodulators in tuberculosis. In particular, lipoarabinomannan (LAM) has a profound effect on the innate immune response. LAM and its structural variants can be recognized by and activate human CD1b-restricted T cells, and emerging evidence indicates that B cells and antibodies against LAM can modulate the immune response to Mtb. Anti-LAM antibodies are induced during Mtb infection and after bacille Calmette-Guerin (BCG) vaccination, and monoclonal antibodies against LAM have been shown to confer protection by passive administration in mice and guinea pigs. In this review, we describe the immune response against LAM and the potential use of the mannose-capped arabinan moiety of LAM in the construction of vaccine candidates against tuberculosis.
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Affiliation(s)
- Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga, Guimarães, Portugal
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Christopher Sundling
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Andrea Cooper
- Leicester Tuberculosis Research Group (LTBRG), Department of Respiratory Sciences, University of Leicester, Leicester, United Kingdom
| | - Gunilla Källenius
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
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24
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Komine-Aizawa S, Jiang J, Mizuno S, Hayakawa S, Matsuo K, Boyd LF, Margulies DH, Honda M. MHC-restricted Ag85B-specific CD8 + T cells are enhanced by recombinant BCG prime and DNA boost immunization in mice. Eur J Immunol 2019; 49:1399-1414. [PMID: 31135967 PMCID: PMC6722017 DOI: 10.1002/eji.201847988] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/09/2019] [Accepted: 05/23/2019] [Indexed: 12/21/2022]
Abstract
Despite efforts to develop effective treatments and vaccines, Mycobacterium tuberculosis (Mtb), particularly pulmonary Mtb, continues to provide major health challenges worldwide. To improve immunization against the persistent health challenge of Mtb infection, we have studied the CD8+ T cell response to Bacillus Calmette-Guérin (BCG) and recombinant BCG (rBCG) in mice. Here, we generated CD8+ T cells with an rBCG-based vaccine encoding the Ag85B protein of M. kansasii, termed rBCG-Mkan85B, followed by boosting with plasmid DNA expressing the Ag85B gene (DNA-Mkan85B). We identified two MHC-I (H2-Kd )-restricted epitopes that induce cross-reactive responses to Mtb and other related mycobacteria in both BALB/c (H2d ) and CB6F1 (H2b/d ) mice. The H2-Kd -restricted peptide epitopes elicited polyfunctional CD8+ T cell responses that were also highly cross-reactive with those of other proteins of the Ag85 complex. Tetramer staining indicated that the two H2-Kd -restricted epitopes elicit distinct CD8+ T cell populations, a result explained by the X-ray structure of the two peptide/H2-Kd complexes. These results suggest that rBCG-Mkan85B vector-based immunization and DNA-Mkan85B boost may enhance CD8+ T cell response to Mtb, and might help to overcome the limited effectiveness of the current BCG in eliciting tuberculosis immunity.
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Affiliation(s)
- Shihoko Komine-Aizawa
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine
| | - Jiansheng Jiang
- Molecular Biology Section, Laboratory of Immune System Biology, NIAID, National Institutes of Health
| | - Satoru Mizuno
- Japan BCG Laboratory
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association
| | - Satoshi Hayakawa
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine
| | - Kazuhiro Matsuo
- Japan BCG Laboratory
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association
| | - Lisa F. Boyd
- Molecular Biology Section, Laboratory of Immune System Biology, NIAID, National Institutes of Health
| | - David H. Margulies
- Molecular Biology Section, Laboratory of Immune System Biology, NIAID, National Institutes of Health
| | - Mitsuo Honda
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine
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25
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Chávez-Galán L, Illescas-Eugenio J, Alvarez-Sekely M, Baez-Saldaña R, Chávez R, Lascurain R. Tuberculosis patients display a high proportion of CD8 + T cells with a high cytotoxic potential. Microbiol Immunol 2019; 63:316-327. [PMID: 31254409 PMCID: PMC6772019 DOI: 10.1111/1348-0421.12724] [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: 02/22/2019] [Revised: 06/10/2019] [Accepted: 06/23/2019] [Indexed: 01/23/2023]
Abstract
Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis (Mtb) and remains a major cause of morbidity and mortality worldwide. In the host's immune response system, T cells play a critical role in mediating protection against Mtb infection, but the role of CD8+ T cells is still controversial. We evaluated the phenotypical characterization and cytotoxic ability of CD8+ T cells by flow cytometry‐based assay. Cytokine levels in serum were measured by multiplex cytokine assay. Our data show that cells from TB patients have an increased percentage of peripheral blood CD8+αβ+ T (p = 0.02) and CD56+CD8+ T (p = 0.02) and a decreased frequency of NKG2D+CD8+ T (p = 0.02) compared with healthy donors. Unlike CD8+ T cells from healthy donors, CD8+ T cells from TB patients exhibit greater cytotoxicity, mediated by HLA class I molecules, on autologous monocytes in the presence of mycobacterial antigens (p = 0.005). Finally, TB patients have a proinflammatory profile characterized by serum high level of TNF‐α (p = 0.02) and IL‐8 (p = 0.0001), but, interestingly, IL‐4 (p = 0.002) was also increased compared with healthy donors. Our data show evidence regarding the highly cytotoxic status of CD8+ T cells in Mtb infection. These cytotoxic cells restricted to HLA‐A, B, and C could be used to optimize strategies for designing new TB vaccines or for identifying markers of disease progression.
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Affiliation(s)
- Leslie Chávez-Galán
- Integrative Immunology Laboratory, National Institute of Respiratory Diseases "Ismael Cosío Villegas" (INER), Mexico City, Mexico
| | | | - Magaly Alvarez-Sekely
- Department of Hematology, National Institute of Cancerology (INCAN), Mexico City, Mexico
| | - Renata Baez-Saldaña
- Oncologic Pulmonology Clinic, National Institute of Respiratory Diseases "Ismael Cosío Villegas" (INER), Mexico City, Mexico
| | - Raúl Chávez
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Ricardo Lascurain
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico (UNAM), Mexico City, Mexico.,Homeopatic National Hospital, Chimalpopoca135, 06800, Mexico City, Mexico
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Barreira-Silva P, Torrado E, Nebenzahl-Guimaraes H, Kallenius G, Correia-Neves M. Aetiopathogenesis, immunology and microbiology of tuberculosis. Tuberculosis (Edinb) 2018. [DOI: 10.1183/2312508x.10020917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Bai X, Aerts SL, Verma D, Ordway DJ, Chan ED. Epidemiologic Evidence of and Potential Mechanisms by Which Second-Hand Smoke Causes Predisposition to Latent and Active Tuberculosis. Immune Netw 2018; 18:e22. [PMID: 29984040 PMCID: PMC6026693 DOI: 10.4110/in.2018.18.e22] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/15/2018] [Accepted: 06/16/2018] [Indexed: 12/13/2022] Open
Abstract
Many studies have linked cigarette smoke (CS) exposure and tuberculosis (TB) infection and disease although much fewer have studied second-hand smoke (SHS) exposure. Our goal is to review the epidemiologic link between SHS and TB as well as to summarize the effects SHS and direct CS on various immune cells relevant for TB. PubMed searches were performed using the key words "tuberculosis" with "cigarette," "tobacco," or "second-hand smoke." The bibliography of relevant papers were examined for additional relevant publications. Relatively few studies associate SHS exposure with TB infection and active disease. Both SHS and direct CS can alter various components of host immunity resulting in increased vulnerability to TB. While the epidemiologic link of these 2 health maladies is robust, more definitive, mechanistic studies are required to prove that SHS and direct CS actually cause increased susceptibility to TB.
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Affiliation(s)
- Xiyuan Bai
- Department of Medicine, Denver Veterans Affairs Medical Center, University of Colorado Anschutz Medical Center, Denver, CO 80045, USA
- Department of Medicine and Office of Academic Affairs, National Jewish Health, Denver, CO 80206, USA
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Denver, CO 80045, USA
| | - Shanae L. Aerts
- Department of Medicine and Office of Academic Affairs, National Jewish Health, Denver, CO 80206, USA
| | - Deepshikha Verma
- Department of Microbiology, Immunology, and Pathology, Mycobacteria Research Laboratories, Colorado State University, Fort Collins, CO 80523, USA
| | - Diane J. Ordway
- Department of Microbiology, Immunology, and Pathology, Mycobacteria Research Laboratories, Colorado State University, Fort Collins, CO 80523, USA
| | - Edward D. Chan
- Department of Medicine, Denver Veterans Affairs Medical Center, University of Colorado Anschutz Medical Center, Denver, CO 80045, USA
- Department of Medicine and Office of Academic Affairs, National Jewish Health, Denver, CO 80206, USA
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Denver, CO 80045, USA
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28
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Pahari S, Kaur G, Negi S, Aqdas M, Das DK, Bashir H, Singh S, Nagare M, Khan J, Agrewala JN. Reinforcing the Functionality of Mononuclear Phagocyte System to Control Tuberculosis. Front Immunol 2018; 9:193. [PMID: 29479353 PMCID: PMC5811511 DOI: 10.3389/fimmu.2018.00193] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 01/23/2018] [Indexed: 12/12/2022] Open
Abstract
The mononuclear phagocyte system (MPS) constitutes dendritic cells, monocytes, and macrophages. This system contributes to various functions that are essential for maintaining homeostasis, activation of innate immunity, and bridging it with the adaptive immunity. Consequently, MPS is highly important in bolstering immunity against the pathogens. However, MPS is the frontline cells in destroying Mycobacterium tuberculosis (Mtb), yet the bacterium prefers to reside in the hostile environment of macrophages. Therefore, it may be very interesting to study the struggle between Mtb and MPS to understand the outcome of the disease. In an event when MPS predominates Mtb, the host remains protected. By contrast, the situation becomes devastating when the pathogen tames and tunes the host MPS, which ultimately culminates into tuberculosis (TB). Hence, it becomes extremely crucial to reinvigorate MPS functionality to overwhelm Mtb and eliminate it. In this article, we discuss the strategies to bolster the function of MPS by exploiting the molecules associated with the innate immunity and highlight the mechanisms involved to overcome the Mtb-induced suppression of host immunity. In future, such approaches may provide an insight to develop immunotherapeutics to treat TB.
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Affiliation(s)
- Susanta Pahari
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Gurpreet Kaur
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Shikha Negi
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Mohammad Aqdas
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Deepjyoti K Das
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Hilal Bashir
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Sanpreet Singh
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Mukta Nagare
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Junaid Khan
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Javed N Agrewala
- Immunology Laboratory, CSIR-Institute of Microbial Technology, Chandigarh, India
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Role of Granulocyte-Macrophage Colony-Stimulating Factor Production by T Cells during Mycobacterium tuberculosis Infection. mBio 2017; 8:mBio.01514-17. [PMID: 29066547 PMCID: PMC5654932 DOI: 10.1128/mbio.01514-17] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mice deficient for granulocyte-macrophage colony-stimulating factor (GM-CSF−/−) are highly susceptible to infection with Mycobacterium tuberculosis, and clinical data have shown that anti-GM-CSF neutralizing antibodies can lead to increased susceptibility to tuberculosis in otherwise healthy people. GM-CSF activates human and murine macrophages to inhibit intracellular M. tuberculosis growth. We have previously shown that GM-CSF produced by iNKT cells inhibits growth of M. tuberculosis. However, the more general role of T cell-derived GM-CSF during infection has not been defined and how GM-CSF activates macrophages to inhibit bacterial growth is unknown. Here we demonstrate that, in addition to nonconventional T cells, conventional T cells also produce GM-CSF during M. tuberculosis infection. Early during infection, nonconventional iNKT cells and γδ T cells are the main source of GM-CSF, a role subsequently assumed by conventional CD4+ T cells as the infection progresses. M. tuberculosis-specific T cells producing GM-CSF are also detected in the peripheral blood of infected people. Under conditions where nonhematopoietic production of GM-CSF is deficient, T cell production of GM-CSF is protective and required for control of M. tuberculosis infection. However, GM-CSF is not required for T cell-mediated protection in settings where GM-CSF is produced by other cell types. Finally, using an in vitro macrophage infection model, we demonstrate that GM-CSF inhibition of M. tuberculosis growth requires the expression of peroxisome proliferator-activated receptor gamma (PPARγ). Thus, we identified GM-CSF production as a novel T cell effector function. These findings suggest that a strategy augmenting T cell production of GM-CSF could enhance host resistance against M. tuberculosis. Mycobacterium tuberculosis is the bacterium that causes tuberculosis, the leading cause of death by any infection worldwide. T cells are critical components of the immune response to Mycobacterium tuberculosis. While gamma interferon (IFN-γ) is a key effector function of T cells during infection, a failed phase IIb clinical trial and other studies have revealed that IFN-γ production alone is not sufficient to control M. tuberculosis. In this study, we demonstrate that CD4+, CD8+, and nonconventional T cells produce GM-CSF during Mycobacterium tuberculosis infection in mice and in the peripheral blood of infected humans. Under conditions where other sources of GM-CSF are absent, T cell production of GM-CSF is protective and is required for control of infection. GM-CSF activation of macrophages to limit bacterial growth requires host expression of the transcription factor PPARγ. The identification of GM-CSF production as a T cell effector function may inform future host-directed therapy or vaccine designs.
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Vyas SP, Goswami R. Striking the right immunological balance prevents progression of tuberculosis. Inflamm Res 2017; 66:1031-1056. [PMID: 28711989 DOI: 10.1007/s00011-017-1081-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/03/2017] [Accepted: 07/07/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Tuberculosis (TB) caused by infection with Mycobacterium tuberculosis (Mtb) is a major burden for human health worldwide. Current standard treatments for TB require prolonged administration of antimycobacterial drugs leading to exaggerated inflammation and tissue damage. This can result in the reactivation of latent TB culminating in TB progression. Thus, there is an unmet need to develop therapies that would shorten the duration of anti-TB treatment and to induce optimal protective immune responses to control the spread of mycobacterial infection with minimal lung pathology. FINDINGS Granulomata is the hallmark structure formed by the organized accumulation of immune cells including macrophages, natural killer cells, dendritic cells, neutrophils, T cells, and B cells to the site of Mtb infection. It safeguards the host by containing Mtb in latent form. However, granulomata can undergo caseation and contribute to the reactivation of latent TB, if the immune responses developed to fight mycobacterial infection are not properly controlled. Thus, an optimal balance between innate and adaptive immune cells might play a vital role in containing mycobacteria in latent form for prolonged periods and prevent the spread of Mtb infection from one individual to another. CONCLUSION Optimal and well-regulated immune responses against Mycobacterium tuberculosis may help to prevent the reactivation of latent TB. Moreover, therapies targeting balanced immune responses could help to improve treatment outcomes among latently infected TB patients and thereby limit the dissemination of mycobacterial infection.
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Affiliation(s)
| | - Ritobrata Goswami
- School of Bio Science, IIT Kharagpur, Kharagpur, West Bengal, 721302, India.
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Abstract
The modulation of tuberculosis (TB)-induced immunopathology caused by human immunodeficiency virus (HIV)-1 coinfection remains incompletely understood but underlies the change seen in the natural history, presentation, and prognosis of TB in such patients. The deleterious combination of these two pathogens has been dubbed a "deadly syndemic," with each favoring the replication of the other and thereby contributing to accelerated disease morbidity and mortality. HIV-1 is the best-recognized risk factor for the development of active TB and accounts for 13% of cases globally. The advent of combination antiretroviral therapy (ART) has considerably mitigated this risk. Rapid roll-out of ART globally and the recent recommendation by the World Health Organization (WHO) to initiate ART for everyone living with HIV at any CD4 cell count should lead to further reductions in HIV-1-associated TB incidence because susceptibility to TB is inversely proportional to CD4 count. However, it is important to note that even after successful ART, patients with HIV-1 are still at increased risk for TB. Indeed, in settings of high TB incidence, the occurrence of TB often remains the first presentation of, and thereby the entry into, HIV care. As advantageous as ART-induced immune recovery is, it may also give rise to immunopathology, especially in the lower-CD4-count strata in the form of the immune reconstitution inflammatory syndrome. TB-immune reconstitution inflammatory syndrome will continue to impact the HIV-TB syndemic.
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Robinson RT, Huppler AR. The Goldilocks model of immune symbiosis with Mycobacteria and Candida colonizers. Cytokine 2017; 97:49-65. [PMID: 28570933 DOI: 10.1016/j.cyto.2017.05.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 12/12/2022]
Abstract
Mycobacteria and Candida species include significant human pathogens that can cause localized or disseminated infections. Although these organisms may appear to have little in common, several shared pathways of immune recognition and response are important for both control and infection-related pathology. In this article, we compare and contrast the innate and adaptive components of the immune system that pertain to these infections in humans and animal models. We also explore a relatively new concept in the mycobacterial field: biological commensalism. Similar to the well-established model of Candida infection, Mycobacteria species colonize their human hosts in equilibrium with the immune response. Perturbations in the immune response permit the progression to pathologic disease at the expense of the host. Understanding the immune factors required to maintain commensalism may aid with the development of diagnostic and treatment strategies for both categories of pathogens.
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Affiliation(s)
- Richard T Robinson
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Anna R Huppler
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA; Department of Pediatrics, Division of Infectious Disease, Medical College of Wisconsin, Children's Hospital and Health System, Children's Research Institute, Milwaukee, WI, USA.
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Qaqish A, Huang D, Chen CY, Zhang Z, Wang R, Li S, Yang E, Lu Y, Larsen MH, Jacobs WR, Qian L, Frencher J, Shen L, Chen ZW. Adoptive Transfer of Phosphoantigen-Specific γδ T Cell Subset Attenuates Mycobacterium tuberculosis Infection in Nonhuman Primates. THE JOURNAL OF IMMUNOLOGY 2017; 198:4753-4763. [PMID: 28526681 DOI: 10.4049/jimmunol.1602019] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 04/12/2017] [Indexed: 12/17/2022]
Abstract
The dominant Vγ2Vδ2 T cell subset recognizes phosphoantigen and exists only in humans and nonhuman primates. Despite the discovery of γδ T cells >30 y ago, a proof-of-concept study has not been done to prove the principle that the Vγ2Vδ2 T cell subset is protective against Mycobacterium tuberculosis and other infections. In this study, we used an adoptive cell-transfer strategy to define the protective role of Vγ2Vδ2 T cells in a primate tuberculosis (TB) model. Vγ2Vδ2 T cells for adoptive transfer displayed central/effector memory and mounted effector functions, including the production of anti-M. tuberculosis cytokines and inhibition of intracellular mycobacteria. They also expressed CXCR3/CCR5/LFA-1 trafficking/tissue-resident phenotypes and consistently trafficked to the airway, where they remained detectable from 6 h through 7 d after adoptive transfer. Interestingly, the test group of macaques receiving transfer of Vγ2Vδ2 T cells at weeks 1 and 3 after high-dose (500 CFU) M. tuberculosis infection exhibited significantly lower levels of M. tuberculosis infection burdens in lung lobes and extrapulmonary organs than did the control groups receiving PBLs or saline. Consistently, adoptive transfer of Vγ2Vδ2 T cells attenuated TB pathology and contained lesions primarily in the infection site of the right caudal lung lobe, with no or reduced TB dissemination to other lobes, spleen, or liver/kidney; in contrast, the controls showed widespread TB dissemination. The proof-of-concept finding supports the view that the dominant Vγ2Vδ2 T cell subset may be included in the rational design of a TB vaccine or host-directed therapy.
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Affiliation(s)
- Arwa Qaqish
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Dan Huang
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Crystal Y Chen
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Zhuoran Zhang
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Richard Wang
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Shengpu Li
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Enzhuoa Yang
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Yang Lu
- Department of Radiology, University of Illinois College of Medicine Chicago, Chicago, IL 60612; and
| | - Michelle H Larsen
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - William R Jacobs
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Lixia Qian
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - James Frencher
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612
| | - Ling Shen
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612;
| | - Zheng W Chen
- Department of Microbiology and Immunology, Center for Primate Biomedical Research, University of Illinois College of Medicine Chicago, Chicago, IL 60612;
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Jiang H, Gong H, Zhang Q, Gu J, Liang L, Zhang J. Decreased expression of perforin in CD8 + T lymphocytes in patients with Mycobacterium tuberculosis infection and its potential value as a marker for efficacy of treatment. J Thorac Dis 2017; 9:1353-1360. [PMID: 28616288 DOI: 10.21037/jtd.2017.05.74] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Cytolytic activity against mycobacteria tuberculosis (MTB) within the infected macrophage is a crucial step in the immunity against TB infection, as MTB is an intracellular bacterium. Cytotoxic molecules such as perforin and granzymes produced by cytolytic T cells directly participate in this process. In this study, we evaluated the cytotoxicity function employing flow cytometry analysis of the level of expression of interferon-γ (IFN-γ), perforin and granzyme B in CD8+ T cells from patients with active pulmonary TB (PTB), stable PTB and healthy controls, and explored whether MTB antigen (MTB Ag)-stimulated cytotoxic molecules would be useful for monitoring responses to anti-TB treatment. METHODS Intracellular IFN-γ, perforin, and granzyme B were measured by flow cytometry in CD8+ T lymphocyte populations from peripheral blood mononuclear cells before and after stimulation with ESAT-6 and CFP-10 peptides for 72 hours. A total of 38 healthy controls, 52 PTB patients after treatment for 2 months and 58 patients with active PTB were enrolled. RESULTS The positive rate of IFN-γ+ CD8+ T cells was expressed higher in active PTB patients and stable PTB compared to healthy controls. Expression of perforin in CD8+ T lymphocytes was lower in the active PTB than the stable PTB. Positive downregulation of perforin and granzyme B after stimulation with ESAT-6 and CFP-10 peptides in active PTB and stable PTB was seen. IFN-γ was upregulated after stimulation. ROC curve analysis showed that the area under the curve (AUC) of perforin and perforin + IFN-γ after stimulation were 0.766 (P=0.000), 0.802 (P=0.000), respectively. CONCLUSIONS Our results show that expression of perforin in CD8+ T lymphocytes is downregulated in PTB infection and ESAT-6 and CFP-10 peptides might participate in the downregulation process. This finding cautiously suggests that MTB Ag-stimulated perforin downregulation and IFN-γ upregulation might be a potential index for monitoring therapy response in active PTB patients.
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Affiliation(s)
- Hongbin Jiang
- Department of Emergency, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Huili Gong
- Tuberculosis Section, Shanghai Pudong New Area Pulmonary Hospital, Shanghai 201209, China
| | - Qing Zhang
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jin Gu
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Li Liang
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jun Zhang
- Department of Laboratory Medicine, Shanghai DeltaHealth Hospital, Shanghai 201702, China
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Khan N, Pahari S, Vidyarthi A, Aqdas M, Agrewala JN. Stimulation through CD40 and TLR-4 Is an Effective Host Directed Therapy against Mycobacterium tuberculosis. Front Immunol 2016; 7:386. [PMID: 27729911 PMCID: PMC5037235 DOI: 10.3389/fimmu.2016.00386] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 09/14/2016] [Indexed: 01/08/2023] Open
Abstract
Tuberculosis (TB) is the leading cause of morbidity and mortality among all infectious diseases. Failure of Bacillus Calmette Guerin as a vaccine and serious side-effects and toxicity due to long-term TB drug regime are the major hurdles associated with TB control. The problem is further compounded by the emergence of drug-resistance strains of Mycobacterium tuberculosis (Mtb). Consequently, it demands a serious attempt to explore safer and superior treatment approaches. Recently, an improved understanding of host–pathogen interaction has opened up new avenues for immunotherapy for treating TB. Although, dendritic cells (DCs) show a profound role in generating immunity against Mtb, their immunotherapeutic potential needs to be precisely investigated in controlling TB. Here, we have devised an approach of bolstering DCs efficacy against Mtb by delivering signals through CD40 and TLR-4 molecules. We found that DCs triggered through CD40 and TLR-4 showed increased secretion of IL-12, IL-6, and TNF-α. It also augmented autophagy. Interestingly, CD40 and TLR-4 stimulation along with the suboptimal dose of anti-TB drugs significantly fortified their efficacy to kill Mtb. Importantly, animals treated with the agonists of CD40 and TLR-4 boosted Th1 and Th17 immunity. Furthermore, it amplified the pool of memory CD4 T cells as well as CD8 T cells. Furthermore, substantial reduction in the bacterial burden in the lungs was observed. Notably, this adjunct therapy employing immunomodulators and chemotherapy can reinvigorate host immunity suppressed due to drugs and Mtb. Moreover, it would strengthen the potency of drugs in curing TB.
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Affiliation(s)
- Nargis Khan
- CSIR-Institute of Microbial Technology , Chandigarh , India
| | - Susanta Pahari
- CSIR-Institute of Microbial Technology , Chandigarh , India
| | | | - Mohammad Aqdas
- CSIR-Institute of Microbial Technology , Chandigarh , India
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Wang F, Mao L, Hou H, Wu S, Huang M, Yin B, Huang J, Zhu Q, Pan Y, Sun Z. The source of Mycobacterium tuberculosis-specific IFN-γ production in peripheral blood mononuclear cells of TB patients. Int Immunopharmacol 2016; 32:39-45. [PMID: 26796515 DOI: 10.1016/j.intimp.2016.01.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/11/2016] [Accepted: 01/13/2016] [Indexed: 12/25/2022]
Abstract
Mycobacterium tuberculosis (Mtb)-specific IFN-γ secretion plays important roles in anti-tuberculosis (TB) immunity. Mtb-specific IFN-γ response can be induced in HIV/TB co-infected patients with a low CD4 lymphocyte count; this suggests that the source of Mtb-specific IFN-γ production is not limited in CD4(+) T lymphocytes. Currently, the major sources of Mtb-specific IFN-γ production and the function and phenotype of Mtb-specific IFN-γ-producing cells still remain unclear. Thirty-nine participants (24 active TB patients, 10 HIV/TB co-infected patients, and 5 healthy volunteers) were recruited according to conventional tests and Mtb-specific IFN-γ ELISPOT assay. Multicolor flow cytometry was used to investigate the production of intracellular IFN-γ in peripheral blood mononuclear cells (PBMCs) after Mtb-specific antigen stimulation. Our results showed that CD4(+), CD8(+) T cells and NK cells are all major sources of Mtb-specific IFN-γ production in PBMCs of TB patients. Moreover, CD8(+) T cells are the highest number of Mtb-specific IFN-γ-producing cells in HIV/TB co-infected patients. Although the activity of NK cells is significantly reduced in TB patients when compared with healthy controls, Mtb-specific antigen stimulation induces a significant increase in NK cell activity. We also showed that CD45RO is the characteristic marker of Mtb-specific IFN-γ-producing T cells but not that of Mtb-specific IFN-γ-producing NK cells in peripheral blood. High expression of CD11a may be the characteristic feature of Mtb-specific IFN-γ-producing NK cells. This study put forward a new insight on the source of antigen-specific IFN-γ-production in PBMCs of TB patients.
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Affiliation(s)
- Feng Wang
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Lie Mao
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Hongyan Hou
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Shiji Wu
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Min Huang
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Botao Yin
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Jing Huang
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Qin Zhu
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Yingying Pan
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China
| | - Ziyong Sun
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095,Wuhan 430030, China.
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Booty MG, Nunes-Alves C, Carpenter SM, Jayaraman P, Behar SM. Multiple Inflammatory Cytokines Converge To Regulate CD8+ T Cell Expansion and Function during Tuberculosis. THE JOURNAL OF IMMUNOLOGY 2016; 196:1822-31. [PMID: 26755819 DOI: 10.4049/jimmunol.1502206] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 12/10/2015] [Indexed: 11/19/2022]
Abstract
The differentiation of effector CD8(+) T cells is a dynamically regulated process that varies during different infections and is influenced by the inflammatory milieu of the host. In this study, we define three signals regulating CD8(+) T cell responses during tuberculosis by focusing on cytokines known to affect disease outcome: IL-12, type I IFN, and IL-27. Using mixed bone marrow chimeras, we compared wild-type and cytokine receptor knockout CD8(+) T cells within the same mouse following aerosol infection with Mycobacterium tuberculosis. Four weeks postinfection, IL-12, type 1 IFN, and IL-27 were all required for efficient CD8(+) T cell expansion in the lungs. We next determined if these cytokines directly promote CD8(+) T cell priming or are required only for expansion in the lungs. Using retrogenic CD8(+) T cells specific for the M. tuberculosis Ag TB10.4 (EsxH), we observed that IL-12 is the dominant cytokine driving both CD8(+) T cell priming in the lymph node and expansion in the lungs; however, type I IFN and IL-27 have nonredundant roles supporting pulmonary CD8(+) T cell expansion. Thus, IL-12 is a major signal promoting priming in the lymph node, but a multitude of inflammatory signals converge in the lung to promote continued expansion. Furthermore, these cytokines regulate the differentiation and function of CD8(+) T cells during tuberculosis. These data demonstrate distinct and overlapping roles for each of the cytokines examined and underscore the complexity of CD8(+) T cell regulation during tuberculosis.
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Affiliation(s)
- Matthew G Booty
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655; and Program in Immunology, Division of Medical Sciences, Harvard Medical School, Boston, MA 02115
| | - Cláudio Nunes-Alves
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655; and
| | - Stephen M Carpenter
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655; and
| | - Pushpa Jayaraman
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655; and
| | - Samuel M Behar
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655; and
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Carpenter SM, Nunes-Alves C, Booty MG, Way SS, Behar SM. A Higher Activation Threshold of Memory CD8+ T Cells Has a Fitness Cost That Is Modified by TCR Affinity during Tuberculosis. PLoS Pathog 2016; 12:e1005380. [PMID: 26745507 PMCID: PMC4706326 DOI: 10.1371/journal.ppat.1005380] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/11/2015] [Indexed: 12/17/2022] Open
Abstract
T cell vaccines against Mycobacterium tuberculosis (Mtb) and other pathogens are based on the principle that memory T cells rapidly generate effector responses upon challenge, leading to pathogen clearance. Despite eliciting a robust memory CD8+ T cell response to the immunodominant Mtb antigen TB10.4 (EsxH), we find the increased frequency of TB10.4-specific CD8+ T cells conferred by vaccination to be short-lived after Mtb challenge. To compare memory and naïve CD8+ T cell function during their response to Mtb, we track their expansions using TB10.4-specific retrogenic CD8+ T cells. We find that the primary (naïve) response outnumbers the secondary (memory) response during Mtb challenge, an effect moderated by increased TCR affinity. To determine whether the expansion of polyclonal memory T cells is restrained following Mtb challenge, we used TCRβ deep sequencing to track TB10.4-specific CD8+ T cells after vaccination and subsequent challenge in intact mice. Successful memory T cells, defined by their clonal expansion after Mtb challenge, express similar CDR3β sequences suggesting TCR selection by antigen. Thus, both TCR-dependent and -independent factors affect the fitness of memory CD8+ responses. The impaired expansion of the majority of memory T cell clonotypes may explain why some TB vaccines have not provided better protection. CD8+ T cells are important for enforcing latency of tuberculosis, and for Mtb control in patients with HIV and low CD4 counts. While vaccines that primarily elicit CD4+ T cell responses have had difficulty preventing active pulmonary TB, a TB vaccine that elicits a potent memory CD8+ T cells is a logical alternative strategy. Memory T cells are thought to respond more rapidly than the primary (naïve) response. However, by directly comparing naïve and memory TCR retrogenic CD8+ T cells specific for the TB10.4 antigen during infection, we observe memory-derived T cells to be less fit than naïve-derived T cells. We relate the reduced fitness of memory CD8+ T cells to their lower sensitivity to antigen and show that fitness can be improved by increasing TCR affinity. Using a novel method for tracking CD8+ T cells elicited by vaccination during the response to Mtb aerosol challenge in intact mice, we observe the robust expansion of a new primary response as well as clonal selection of the secondary response, likely driven by TCR affinity. We propose that generating memory T cells with high affinities should be a goal of vaccination against TB.
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Affiliation(s)
- Stephen M. Carpenter
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Division of Infectious Disease, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
- Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail: (SMC); (SMB)
| | - Cláudio Nunes-Alves
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Matthew G. Booty
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Program in Immunology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Sing Sing Way
- Division of Infectious Diseases, Cincinnati Children’s Hospital, Cincinnati, Ohio, United States of America
| | - Samuel M. Behar
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail: (SMC); (SMB)
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Zhao J, Siddiqui S, Shang S, Bian Y, Bagchi S, He Y, Wang CR. Mycolic acid-specific T cells protect against Mycobacterium tuberculosis infection in a humanized transgenic mouse model. eLife 2015; 4. [PMID: 26652001 PMCID: PMC4718816 DOI: 10.7554/elife.08525] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/01/2015] [Indexed: 11/25/2022] Open
Abstract
Group 1 CD1 molecules, CD1a, CD1b and CD1c, present lipid antigens from Mycobacterium tuberculosis (Mtb) to T cells. Mtb lipid-specific group 1 CD1-restricted T cells have been detected in Mtb-infected individuals. However, their role in protective immunity against Mtb remains unclear due to the absence of group 1 CD1 expression in mice. To overcome the challenge, we generated mice that expressed human group 1 CD1 molecules (hCD1Tg) and a CD1b-restricted, mycolic-acid specific TCR (DN1Tg). Using DN1Tg/hCD1Tg mice, we found that activation of DN1 T cells was initiated in the mediastinal lymph nodes and showed faster kinetics compared to Mtb Ag85B-specific CD4+ T cells after aerosol infection with Mtb. Additionally, activated DN1 T cells exhibited polyfunctional characteristics, accumulated in lung granulomas, and protected against Mtb infection. Therefore, our findings highlight the vaccination potential of targeting group 1 CD1-restricted lipid-specific T cells against Mtb infection. DOI:http://dx.doi.org/10.7554/eLife.08525.001 Most cases of tuberculosis are caused by a bacterium called Mycobacterium tuberculosis, which is believed to have infected one third of the world’s population. Most of these infections are dormant and don’t cause any symptoms. However, active infections can be deadly if left untreated and often require six months of treatment with multiple antibiotics. One reason why these infections are so difficult to treat is because the M. tuberculosis cell walls contain fatty molecules known as mycolic acids, which make the bacteria less susceptible to antibiotics. These molecules also help the bacteria to subvert and then hide from the immune system. The prevalence of the disease and the increasing problem of antibiotic resistance have spurred the search for an effective vaccine against tuberculosis. While most efforts have focused on using protein fragments in tuberculosis vaccines, some evidence suggests that human immune cells can recognize fatty molecules such as mycolic acids and that these cells could help manage and control M. tuberculosis infections. However, it has been difficult to determine whether these immune cells genuinely play a protective role against the disease because most vaccine research uses mouse models and mice do not have an equivalent of these immune cells. Now, Zhao et al. have engineered a “humanized” mouse model that produces the fatty molecule-specific immune cells, and show that these mice do respond to the presence of mycolic acids. Infecting the genetically engineered mice with M. tuberculosis revealed that the fatty molecule-specific immune cells were quickly activated within lymph nodes at the center of the chest. These cells later accumulated at sites in the lung where the bacteria reside, and ultimately protected against M. tuberculosis infection. The results show that these specific immune cells can counteract M. tuberculosis, and highlight the potential of using mycolic acids to generate an effective vaccine that provides protection against tuberculosis. DOI:http://dx.doi.org/10.7554/eLife.08525.002
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Affiliation(s)
- Jie Zhao
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Sarah Siddiqui
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Shaobin Shang
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Yao Bian
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Sreya Bagchi
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Ying He
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Chyung-Ru Wang
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
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A Novel MVA-Based Multiphasic Vaccine for Prevention or Treatment of Tuberculosis Induces Broad and Multifunctional Cell-Mediated Immunity in Mice and Primates. PLoS One 2015; 10:e0143552. [PMID: 26599077 PMCID: PMC4658014 DOI: 10.1371/journal.pone.0143552] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 11/05/2015] [Indexed: 02/06/2023] Open
Abstract
Bacille Calmette-Guérin (BCG) vaccination of new born babies can protect children against tuberculosis (TB), but fails to protect adults consistently against pulmonary TB underlying the urgent need to develop novel TB vaccines. Majority of first generation TB vaccine candidates have relied on a very limited number of antigens typically belonging to the active phase of infection. We have designed a multi-antigenic and multiphasic vaccine, based on the Modified Vaccinia Ankara virus (MVA). Up to fourteen antigens representative of the three phases of TB infection (active, latent and resuscitation) were inserted into MVA. Using three different strains of mouse (BALB/c, C57BL/6 and C3H/HeN), we show that a single vaccination results in induction of both CD4 and CD8 T cells, displaying capacity to produce multiple cytokines together with cytolytic activity targeting a large array of epitopes. As expected, dominance of responses was linked to the mouse haplotype although for a given haplotype, responses specific of at least one antigen per phase could always be detected. Vaccination of non-human primates with the 14 antigens MVA-TB candidate resulted in broad and potent cellular-based immunogenicity. The remarkable plasticity of MVA opens the road to development of a novel class of highly complex recombinant TB vaccines to be evaluated in both prophylactic and therapeutic settings.
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Coler RN, Hudson T, Hughes S, Huang PWD, Beebe EA, Orr MT. Vaccination Produces CD4 T Cells with a Novel CD154-CD40-Dependent Cytolytic Mechanism. THE JOURNAL OF IMMUNOLOGY 2015; 195:3190-7. [PMID: 26297758 DOI: 10.4049/jimmunol.1501118] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/22/2015] [Indexed: 11/19/2022]
Abstract
The discovery of new vaccines against infectious diseases and cancer requires the development of novel adjuvants with well-defined activities. The TLR4 agonist adjuvant GLA-SE elicits robust Th1 responses to a variety of vaccine Ags and is in clinical development for both infectious diseases and cancer. We demonstrate that immunization with a recombinant protein Ag and GLA-SE also induces granzyme A expression in CD4 T cells and produces cytolytic cells that can be detected in vivo. Surprisingly, these in vivo CTLs were CD4 T cells, not CD8 T cells, and this cytolytic activity was not dependent on granzyme A/B or perforin. Unlike previously reported CD4 CTLs, the transcription factors Tbet and Eomes were not necessary for their development. CTL activity was also independent of the Fas ligand-Fas, TRAIL-DR5, and canonical death pathways, indicating a novel mechanism of CTL activity. Rather, the in vivo CD4 CTL activity induced by vaccination required T cell expression of CD154 (CD40L) and target cell expression of CD40. Thus, vaccination with a TLR4 agonist adjuvant induces CD4 CTLs, which kill through a previously unknown CD154-dependent mechanism.
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Affiliation(s)
- Rhea N Coler
- Infectious Disease Research Institute, Seattle, WA 98102; Department of Global Health, University of Washington, Seattle, WA 98105; and PAI Life Sciences, Seattle, WA 98102
| | - Thomas Hudson
- Infectious Disease Research Institute, Seattle, WA 98102
| | - Sean Hughes
- Infectious Disease Research Institute, Seattle, WA 98102
| | - Po-Wei D Huang
- Infectious Disease Research Institute, Seattle, WA 98102
| | - Elyse A Beebe
- Infectious Disease Research Institute, Seattle, WA 98102
| | - Mark T Orr
- Infectious Disease Research Institute, Seattle, WA 98102; Department of Global Health, University of Washington, Seattle, WA 98105; and
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Torrado E, Fountain JJ, Liao M, Tighe M, Reiley WW, Lai RP, Meintjes G, Pearl JE, Chen X, Zak DE, Thompson EG, Aderem A, Ghilardi N, Solache A, McKinstry KK, Strutt TM, Wilkinson RJ, Swain SL, Cooper AM. Interleukin 27R regulates CD4+ T cell phenotype and impacts protective immunity during Mycobacterium tuberculosis infection. ACTA ACUST UNITED AC 2015; 212:1449-63. [PMID: 26282876 PMCID: PMC4548054 DOI: 10.1084/jem.20141520] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Accepted: 07/21/2015] [Indexed: 01/28/2023]
Abstract
Loss of IL-27R on T cells results in increased protection from Mycobacterium tuberculosis. Torrado et al. demonstrate that IL-27R−/− T cells show improved fitness that is associated with decreased expression of cell death molecules, maintenance of IL-2 production, and preferential accumulation in the lung parenchyma and around infected macrophages. CD4+ T cells mediate protection against Mycobacterium tuberculosis (Mtb); however, the phenotype of protective T cells is undefined, thereby confounding vaccination efforts. IL-27 is highly expressed during human tuberculosis (TB), and absence of IL-27R (Il27ra) specifically on T cells results in increased protection. IL-27R deficiency during chronic Mtb infection does not impact antigen-specific CD4+ T cell number but maintains programmed death-1 (PD-1), CD69, and CD127 expression while reducing T-bet and killer cell lectin-like receptor G1 (KLRG1) expression. Furthermore, T-bet haploinsufficiency results in failure to generate KLRG1+, antigen-specific CD4+ T cells, and in improved protection. T cells in Il27ra−/− mice accumulate preferentially in the lung parenchyma within close proximity to Mtb, and antigen-specific CD4+ T cells lacking IL-27R are intrinsically more fit than intact T cells and maintain IL-2 production. Improved fitness of IL-27R–deficient T cells is not associated with increased proliferation but with decreased expression of cell death–associated markers. Therefore, during Mtb infection, IL-27R acts intrinsically on T cells to limit protection and reduce fitness, whereas the IL-27R–deficient environment alters the phenotype and location of T cells. The significant expression of IL-27 in TB and the negative influence of IL-27R on T cell function demonstrate the pathway by which this cytokine/receptor pair is detrimental in TB.
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Affiliation(s)
| | | | - Mingfeng Liao
- Trudeau Institute, Saranac Lake, NY 12983 Guangdong Key Laboratory for Emerging Infectious Disease and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Guangdong Medical College, Shenzhen 518112, China Guangdong Key Laboratory for Emerging Infectious Disease and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Guangdong Medical College, Shenzhen 518112, China
| | | | | | - Rachel P Lai
- Mill Hill Laboratory, The Francis Crick Institute, London NW7 1AA, England, UK
| | - Graeme Meintjes
- Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, Cape Town, South Africa Department of Medicine, Imperial College London, London SW7 2AZ, England, UK
| | | | - Xinchun Chen
- Guangdong Key Laboratory for Emerging Infectious Disease and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Guangdong Medical College, Shenzhen 518112, China Guangdong Key Laboratory for Emerging Infectious Disease and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Guangdong Medical College, Shenzhen 518112, China
| | - Daniel E Zak
- Center for Infectious Disease Research (formerly Seattle Biomedical Research Institute), Seattle, WA 98109
| | - Ethan G Thompson
- Center for Infectious Disease Research (formerly Seattle Biomedical Research Institute), Seattle, WA 98109
| | - Alan Aderem
- Center for Infectious Disease Research (formerly Seattle Biomedical Research Institute), Seattle, WA 98109
| | - Nico Ghilardi
- Department of Immunology, Genentech, South San Francisco, CA 94080
| | | | - K Kai McKinstry
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Tara M Strutt
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Robert J Wilkinson
- Mill Hill Laboratory, The Francis Crick Institute, London NW7 1AA, England, UK Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, Cape Town, South Africa Department of Medicine, Imperial College London, London SW7 2AZ, England, UK
| | - Susan L Swain
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655
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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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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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Wang J, Yao Y, Wu J, Li G. Identification and analysis of exosomes secreted from macrophages extracted by different methods. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:6135-42. [PMID: 26261491 PMCID: PMC4525825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 05/21/2015] [Indexed: 06/04/2023]
Abstract
Exosomes were small vesicles secreted by many cells, and they can play an important role in cell signal transductions. Because the diameter of exosomes is about 30-100 nm, it is so difficult to collection them. In this paper, three kinds of exosomes purifying methods (density gradient ultracentrifugation method, the ultracentrifugation and ultrafiltration method, ExoQuick™ Extraction kit method) were used to collected exosomes in culture supernatants of macrophages. The morphologies of three kinds of exosomes were analyzed by transmission electron microscopy (TEM), and the characteristic molecules such as CD86, LAMP-1, HSP-70 on exosomes were analyzed with Western blot. In addition, the biological activities of exosomes purified by three kinds of methods in vitro were analyzed by ELISA and flow cytometry methods. All experimental results show that the purity and quality of exosomes collected by ExoQuick™ extraction kit and ultracentrifugation and ultrafiltration method were better, and they could enhance the expression of MHC-I in macrophages and promote cells to secrete more TNF-α to cause inflammatory response of macrophages. The analysis pointed out that the advantages and disadvantages of the three methods by biological activities or components of exosomes. Therefore, the ultracentrifugation and ultrafiltration method or the ExoQuick™ Extraction kit method were more suitable to be applied in the scientific research.
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Affiliation(s)
- Jianjun Wang
- Department of Clinical Laboratory, Kunshan First People’s Hospital, Affiliated to Jiang Su UniversityKunshan 215300, China
| | - Yongliang Yao
- Department of Clinical Laboratory, Kunshan First People’s Hospital, Affiliated to Jiang Su UniversityKunshan 215300, China
| | - Jianhong Wu
- Department of Clinical Laboratory, Kunshan First People’s Hospital, Affiliated to Jiang Su UniversityKunshan 215300, China
| | - Guangxin Li
- Department of Pathology, Chong Qing Cancer InstituteChong Qing 400030, China
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Li W, Li M, Deng G, Zhao L, Liu X, Wang Y. Prime-boost vaccination with Bacillus Calmette Guerin and a recombinant adenovirus co-expressing CFP10, ESAT6, Ag85A and Ag85B of Mycobacterium tuberculosis induces robust antigen-specific immune responses in mice. Mol Med Rep 2015; 12:3073-80. [PMID: 25962477 DOI: 10.3892/mmr.2015.3770] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 03/23/2015] [Indexed: 11/06/2022] Open
Abstract
Tuberculosis (TB) remains to be a prevalent health issue worldwide. At present, Mycobacterium bovis Bacillus Calmette Guerin (BCG) is the singular anti-TB vaccine available for the prevention of disease in humans; however, this vaccine only provides limited protection against Mycobacterium tuberculosis (Mtb) infection. Therefore, the development of alternative vaccines and strategies for increasing the efficacy of vaccination against TB are urgently required. The present study aimed to evaluate the ability of a recombinant adenoviral vector (Ad5-CEAB) co-expressing 10-kDa culture filtrate protein, 6-kDa early-secreted antigenic target, antigen 85 (Ag85)A and Ag85B of Mtb to boost immune responses following primary vaccination with BCG in mice. The mice were first subcutaneously primed with BCG and boosted with two doses of Ad5-CEAB via an intranasal route. The immunological effects of Ad5-CEAB boosted mice primed with BCG were then evaluated using a series of immunological indexes. The results demonstrated that the prime-boost strategy induced a potent antigen-specific immune response, which was primarily characterized by an enhanced T cell response and increased production of cytokines, including interferon-γ, tumor necrosis factor-α and interleukin-2, in mice. In addition, this vaccination strategy was demonstrated to have an elevated humoral response with increased concentrations of antigen-specific bronchoalveolar lavage secretory immunoglobulin (Ig)A and serum IgG in mice compared with those primed with BCG alone. These data suggested that the regimen of subcutaneous BCG prime and mucosal Ad5-CEAB boost was a novel strategy for inducing a broad range of antigen-specific immune responses to Mtb antigens in vivo, which may provide a promising strategy for further development of adenoviral-based vaccine against Mtb infection.
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Affiliation(s)
- Wu Li
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in Western China, College of Life Science, Ningxia University, Ningxia 750021, P.R. China
| | - Min Li
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in Western China, College of Life Science, Ningxia University, Ningxia 750021, P.R. China
| | - Guangcun Deng
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in Western China, College of Life Science, Ningxia University, Ningxia 750021, P.R. China
| | - Liping Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Xiaoming Liu
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in Western China, College of Life Science, Ningxia University, Ningxia 750021, P.R. China
| | - Yujiong Wang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in Western China, College of Life Science, Ningxia University, Ningxia 750021, P.R. China
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Nunes-Alves C, Booty MG, Carpenter SM, Rothchild AC, Martin CJ, Desjardins D, Steblenko K, Kløverpris HN, Madansein R, Ramsuran D, Leslie A, Correia-Neves M, Behar SM. Human and Murine Clonal CD8+ T Cell Expansions Arise during Tuberculosis Because of TCR Selection. PLoS Pathog 2015; 11:e1004849. [PMID: 25945999 PMCID: PMC4422591 DOI: 10.1371/journal.ppat.1004849] [Citation(s) in RCA: 25] [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: 01/11/2015] [Accepted: 04/01/2015] [Indexed: 12/17/2022] Open
Abstract
The immune system can recognize virtually any antigen, yet T cell responses against several pathogens, including Mycobacterium tuberculosis, are restricted to a limited number of immunodominant epitopes. The host factors that affect immunodominance are incompletely understood. Whether immunodominant epitopes elicit protective CD8+ T cell responses or instead act as decoys to subvert immunity and allow pathogens to establish chronic infection is unknown. Here we show that anatomically distinct human granulomas contain clonally expanded CD8+ T cells with overlapping T cell receptor (TCR) repertoires. Similarly, the murine CD8+ T cell response against M. tuberculosis is dominated by TB10.44-11-specific T cells with extreme TCRβ bias. Using a retrogenic model of TB10.44-11-specific CD8+ T cells, we show that TCR dominance can arise because of competition between clonotypes driven by differences in affinity. Finally, we demonstrate that TB10.4-specific CD8+ T cells mediate protection against tuberculosis, which requires interferon-γ production and TAP1-dependent antigen presentation in vivo. Our study of how immunodominance, biased TCR repertoires, and protection are inter-related, provides a new way to measure the quality of T cell immunity, which if applied to vaccine evaluation, could enhance our understanding of how to elicit protective T cell immunity. While T cells are required for protection against Mycobacterium tuberculosis infection, attempts to prevent tuberculosis by vaccines designed to elicit memory T cells have only been partially successful. Several vaccine candidates are in clinical trials, but progress has been slow because their ability to prevent disease must be empirically tested. There is little understanding of why certain antigens are targets of protective immunity. We have characterized an immunodominant CD8+ T cell response to the M. tuberculosis antigen TB10.4 (EsxH). CD8+ T cells specific for the TB10.44–11 epitope are primed early during infection and account for 30–50% of lung CD8+ T cells during chronic infection. Now we have used deep sequencing to characterize the TCR repertoire of TB10.44-11-specific CD8+ T cells in the lungs of infected mice. Interestingly, TB10.44-11-specific CD8+ T cells exhibit extreme clonal expansion of certain TCRβ with common structural features, most likely because of affinity selection. Affinity selection of T cells is more important when antigen presentation is limiting. Although the lung contains numerous bacteria during infection, antigen-presentation by infected APC may be limiting, mimicking a “low antigen” state. Thus, even T cells that have the potential to mediate protection may function inefficiently because of suboptimal T cell activation.
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Affiliation(s)
- Cláudio Nunes-Alves
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Matthew G. Booty
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Program in Immunology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Stephen M. Carpenter
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Division of Infectious Disease, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
- Division of Infectious Disease, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Alissa C. Rothchild
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Program in Immunology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Constance J. Martin
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Danielle Desjardins
- Division of Infectious Disease, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
| | - Katherine Steblenko
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Henrik N. Kløverpris
- KwaZulu-Natal Research Institute for TB and HIV, Durban, South Africa
- Nelson Mandela School of Medicine, University of Kwa-Zulu-Natal, Durban, South Africa
- Department of International Health, Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Rajhmun Madansein
- Nelson Mandela School of Medicine, University of Kwa-Zulu-Natal, Durban, South Africa
| | - Duran Ramsuran
- KwaZulu-Natal Research Institute for TB and HIV, Durban, South Africa
| | - Alasdair Leslie
- KwaZulu-Natal Research Institute for TB and HIV, Durban, South Africa
- Nelson Mandela School of Medicine, University of Kwa-Zulu-Natal, Durban, South Africa
| | - Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Samuel M. Behar
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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Mattila JT, Maiello P, Sun T, Via LE, Flynn JL. Granzyme B-expressing neutrophils correlate with bacterial load in granulomas from Mycobacterium tuberculosis-infected cynomolgus macaques. Cell Microbiol 2015; 17:1085-97. [PMID: 25653138 DOI: 10.1111/cmi.12428] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 01/04/2015] [Accepted: 02/02/2015] [Indexed: 01/21/2023]
Abstract
The role of neutrophils in tuberculosis (TB), and whether neutrophils express granzyme B (grzB), a pro-apoptotic enzyme associated with cytotoxic T cells, is controversial. We examined neutrophils in peripheral blood (PB) and lung granulomas of Mycobacterium tuberculosis-infected cynomolgus macaques and humans to determine whether mycobacterial products or pro-inflammatory factors induce neutrophil grzB expression. We found large numbers of grzB-expressing neutrophils in macaque and human granulomas and these cells contained more grzB+ granules than T cells. Higher neutrophil, but not T cell, grzB expression correlated with increased bacterial load. Although unstimulated PB neutrophils lacked grzB expression, grzB expression increased upon exposure to M.tuberculosis bacilli, M.tuberculosis culture filtrate protein or lipopolysaccharide from Escherichia coli. Perforin is required for granzyme-mediated cytotoxicity by T cells, but was not observed in PB or granuloma neutrophils. Nonetheless, stimulated PB neutrophils secreted grzB as determined by enzyme-linked immunospot assays. Purified grzB was not bactericidal or bacteriostatic, suggesting secreted neutrophil grzB acts on extracellular targets, potentially enhancing neutrophil migration through extracellular matrix and regulating apoptosis or activation in other cell types. These data indicate mycobacterial products and the pro-inflammatory environment of granulomas up-regulates neutrophil grzB expression and suggests a previously unappreciated aspect of neutrophil biology in TB.
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Affiliation(s)
- Joshua T Mattila
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Pauline Maiello
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Tao Sun
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Laura E Via
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, NIAID, NIH, Bethesda, MD, USA
| | - JoAnne L Flynn
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
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Gowthaman U, Mushtaq K, Tan AC, Rai PK, Jackson DC, Agrewala JN. Challenges and solutions for a rational vaccine design for TB-endemic regions. Crit Rev Microbiol 2015; 41:389-98. [PMID: 24495096 DOI: 10.3109/1040841x.2013.859125] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Vaccines have been successful for global eradication or control of dreaded diseases such as smallpox, diphtheria, tetanus, yellow fever, whooping cough, polio, and measles. Unfortunately, this success has not been achieved for controlling tuberculosis (TB) worldwide. Bacillus Calmette Guérin (BCG) is the only available vaccine against TB. Paradoxically, BCG has deciphered success in the Western world but has failed in TB-endemic areas. In this article, we highlight and discuss the aspects of immunity responsible for controlling Mycobacterium tuberculosis infection and factors responsible for the failure of BCG in TB-endemic countries. In addition, we also suggest strategies that contribute toward the development of successful vaccine in protecting populations where BCG has failed.
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Li W, Deng G, Li M, Zeng J, Zhao L, Liu X, Wang Y. A recombinant adenovirus expressing CFP10, ESAT6, Ag85A and Ag85B of Mycobacterium tuberculosis elicits strong antigen-specific immune responses in mice. Mol Immunol 2014; 62:86-95. [DOI: 10.1016/j.molimm.2014.06.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/28/2014] [Accepted: 06/08/2014] [Indexed: 01/03/2023]
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