1
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Zheng Y, Han F, Wu Z, Wang B, Chen X, Boulouis C, Jiang Y, Ho A, He D, Sia WR, Mak JYW, Fairlie DP, Wang LF, Sandberg JK, Lobie PE, Ma S, Leeansyah E. MAIT cell activation and recruitment in inflammation and tissue damage in acute appendicitis. SCIENCE ADVANCES 2024; 10:eadn6331. [PMID: 38865451 PMCID: PMC11168461 DOI: 10.1126/sciadv.adn6331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 05/08/2024] [Indexed: 06/14/2024]
Abstract
Mucosal-associated invariant T (MAIT) cells are antimicrobial T cells abundant in the gut, but mechanisms for their migration into tissues during inflammation are poorly understood. Here, we used acute pediatric appendicitis (APA), a model of acute intestinal inflammation, to examine these migration mechanisms. MAIT cells were lower in numbers in circulation of patients with APA but were enriched in the inflamed appendix with increased production of proinflammatory cytokines. Using the patient-derived appendix organoid (PDAO) model, we found that circulating MAIT cells treated with inflammatory cytokines elevated in APA up-regulated chemokine receptors, including CCR1, CCR3, and CCR4. They exhibited enhanced infiltration of Escherichia coli-pulsed PDAO in a CCR1-, CCR2-, and CCR4-dependent manner. Close interactions of MAIT cells with infected organoids led to the PDAO structural destruction and death. These findings reveal a previously unidentified mechanism of MAIT cell tissue homing, their participation in tissue damage in APA, and their intricate relationship with mucosal tissues during acute intestinal inflammation in humans.
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Affiliation(s)
- Yichao Zheng
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Fei Han
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Zhengyu Wu
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Bingjie Wang
- Department of Pediatric Surgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, China
| | - Xingchi Chen
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Caroline Boulouis
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Yuebin Jiang
- Department of Pathology, Zhangzhou Municipal Hospital of Fujian Province, Zhangzhou 363000, China
| | - Amanda Ho
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Dan He
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Wan Rong Sia
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Jeffrey Y. W. Mak
- Centre for Chemistry and Drug Discovery, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, Australia
| | - David P. Fairlie
- Centre for Chemistry and Drug Discovery, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, Australia
| | - Lin-Fa Wang
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Johan K. Sandberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Peter E. Lobie
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Shaohua Ma
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Edwin Leeansyah
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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2
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Han F, Gulam MY, Zheng Y, Zulhaimi NS, Sia WR, He D, Ho A, Hadadi L, Liu Z, Qin P, Lobie PE, Kamarulzaman A, Wang LF, Sandberg JK, Lewin SR, Rajasuriar R, Leeansyah E. IL7RA single nucleotide polymorphisms are associated with the size and function of the MAIT cell population in treated HIV-1 infection. Front Immunol 2022; 13:985385. [PMID: 36341446 PMCID: PMC9632172 DOI: 10.3389/fimmu.2022.985385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 10/04/2022] [Indexed: 11/24/2022] Open
Abstract
MAIT cells are persistently depleted and functionally exhausted in HIV-1-infected patients despite long-term combination antiretroviral therapy (cART). IL-7 treatment supports MAIT cell reconstitution in vivo HIV-1-infected individuals and rescues their functionality in vitro. Single-nucleotide polymorphisms (SNPs) of the IL-7RA gene modulate the levels of soluble(s)IL-7Rα (sCD127) levels and influence bioavailability of circulating IL-7. Here we evaluate the potential influence of IL-7RA polymorphisms on MAIT cell numbers and function in healthy control (HC) subjects and HIV-1-infected individuals on long-term cART. Our findings indicate that IL-7RA haplotype 2 (H2*T), defined as T-allele carriers at the tagging SNP rs6897932, affects the size of the peripheral blood MAIT cell pool, as well as their production of cytokines and cytolytic effector proteins in response to bacterial stimulation. H2*T carriers had lower sIL-7Rα levels and higher MAIT cell frequency with enhanced functionality linked to higher expression of MAIT cell-associated transcription factors. Despite an average of 7 years on suppressive cART, MAIT cell levels and function in HIV-1-infected individuals were still significantly lower than those of HC. Notably, we observed a significant correlation between MAIT cell levels and cART duration only in HIV-1-infected individuals carrying IL-7RA haplotype 2. Interestingly, treatment with sIL-7Rα in vitro suppressed IL-7-dependent MAIT cell proliferation and function following cognate stimulations. These observations suggest that sIL-7Rα levels may influence MAIT cell numbers and function in vivo by limiting IL-7 bioavailability to MAIT cells. Collectively, these observations suggest that IL-7RA polymorphisms may play a significant role in MAIT cell biology and influence MAIT cells recovery in HIV-1 infection. The potential links between IL7RA polymorphisms, MAIT cell immunobiology, and HIV-1 infection warrant further studies going forward.
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Affiliation(s)
- Fei Han
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Muhammad Yaaseen Gulam
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Yichao Zheng
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Nurul Syuhada Zulhaimi
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Wan Rong Sia
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Dan He
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Amanda Ho
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Leila Hadadi
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Zhenyu Liu
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Peiwu Qin
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Peter E. Lobie
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Adeeba Kamarulzaman
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Lin-Fa Wang
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Johan K. Sandberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sharon R. Lewin
- Peter Doherty Institute for Infection and Immunity, Melbourne University, Victoria, Australia
| | - Reena Rajasuriar
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Peter Doherty Institute for Infection and Immunity, Melbourne University, Victoria, Australia
| | - Edwin Leeansyah
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
- Precision Medicine and Healthcare Research Centre, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
- *Correspondence: Edwin Leeansyah,
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3
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ALCAM: A Novel Surface Marker on EpCAMlow Circulating Tumor Cells. Biomedicines 2022; 10:biomedicines10081983. [PMID: 36009530 PMCID: PMC9405826 DOI: 10.3390/biomedicines10081983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Current strategies in circulating tumor cell (CTC) isolation in pancreatic cancer heavily rely on the EpCAM and cytokeratin cell status. EpCAM is generally not considered a good marker given its transitory change during Epithelial to Mesenchymal Transition (EMT) or reverse EMT. There is a need to identify other surface markers to capture the complete repertoire of PDAC CTCs. The primary objective of the study is to characterize alternate surface biomarkers to EpCAM on CTCs that express low or negligible levels of surface EpCAM in pancreatic cancer patients. Methods: Flow cytometry and surface mass spectrometry were used to identify proteins expressed on the surface of PDAC CTCs in culture. CTCs were grown under conditions of attachment and in co-culture with naïve neutrophils. Putative biomarkers were then validated in GEMMs and patient samples. Results: Surface proteomic profiling of CTCs identified several novel protein biomarkers. ALCAM was identified as a novel robust marker in GEMM models and in patient samples. Conclusions: We identified several novel surface biomarkers on CTCs expressed under differing conditions of culture. ALCAM was validated and identified as a novel alternate surface marker on EpCAMlow CTCs.
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4
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Vazquez J, Chavarria M, Chasman DA, Schwartz RW, Tyler CT, Lopez G, Fisher RC, Ong IM, Stanic AK. Multiomic analysis reveals decidual-specific transcriptional programing of MAIT cells. Am J Reprod Immunol 2021; 86:e13495. [PMID: 34411378 PMCID: PMC8720468 DOI: 10.1111/aji.13495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 06/24/2021] [Accepted: 08/16/2021] [Indexed: 12/26/2022] Open
Abstract
PROBLEM Mucosal-Associated Invariant T (MAIT) cells have been recently identified at the maternal-fetal interface. However, transcriptional programming of decidual MAIT cells in pregnancy remains poorly understood. METHOD OF STUDY We employed a multiomic approach to address this question. Mononuclear cells from the decidua basalis and parietalis, and control PBMCs, were analyzed via flow cytometry to investigate MAIT cells in the decidua and assess their transcription factor expression. In a separate study, both decidual and matched peripheral MAIT cells were analyzed using Cellular Indexing of Transcriptomes and Epitopes by Sequencing (CITE-seq) coupled with gene expression analysis. Lastly, decidual MAIT cells were stimulated with E.coli and expression of MR1 by antigen presenting cells was measured to evaluate decidual MAIT cell function. RESULTS First, we identified MAIT cells in both the decidua basalis and parietalis. CITE-seq, coupled with scRNA-seq gene expression analysis, highlighted transcriptional programming differences between decidual and matched peripheral MAIT cells at a single cell resolution. Transcription factor expression analysis further highlighted transcriptional differences between decidual MAIT cells and non-matched peripheral MAIT cells. Functionally, MAIT cells are skewed towards IFNγ and TNFα production upon stimulation, with E.coli leading to IFNγ production. Lastly, we demonstrate that MR1, the antigen presenting molecule restricting MAIT cells, is expressed by decidual APCs. CONCLUSION MAIT cells are present in the decidua basalis and obtain a unique gene expression profile. The presence of MR1 on APCs coupled with in vitro activation by E.coli suggests that MAIT cells might be involved in tissue-repair mechanisms at the maternal-fetal interface.
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Affiliation(s)
| | | | - Deborah A. Chasman
- Departments of Obstetrics and Gynecology
- Biostatistics and Medical Informatics
| | - Rene Welch Schwartz
- Departments of Obstetrics and Gynecology
- Biostatistics and Medical Informatics
| | | | | | | | - Irene M. Ong
- Departments of Obstetrics and Gynecology
- Biostatistics and Medical Informatics
- University of Wisconsin Carbone Comprehensive Cancer Center
- Center for Human Genomics and Precision Medicine, University of Wisconsin-Madison, Madison, WI
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5
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Du Y, Khera T, Strunz B, Deterding K, Todt D, Woller N, Engelskircher SA, Hardtke S, Port K, Ponzetta A, Steinmann E, Cornberg M, Hengst J, Björkström NK, Wedemeyer H. Imprint of unconventional T-cell response in acute hepatitis C persists despite successful early antiviral treatment. Eur J Immunol 2021; 52:472-483. [PMID: 34843107 DOI: 10.1002/eji.202149457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 11/05/2021] [Accepted: 11/25/2021] [Indexed: 12/18/2022]
Abstract
Unconventional T cells (UTCs) are a heterogeneous group of T cells that typically exhibit rapid responses toward specific antigens from pathogens. Chronic hepatitis C virus (HCV) infection causes dysfunction of several subsets of UTCs. This altered phenotype and function of UTCs can persist over time even after direct-acting antiviral (DAA)-mediated clearance of chronic HCV. However, it is less clear if and how UTCs respond in acute, symptomatic HCV infection, a rare clinical condition, and if rapid DAA treatment of such patients reverses the caused perturbations within UTCs. Here, we comprehensively analyzed the phenotype and reinvigoration capacity of three major UTC populations, mucosal-associated invariant T (MAIT) cells, γδ T cells, and CD4 and CD8 double-negative αβ T cells (DNT cells) before, during, and after DAA-mediated clearance of acute symptomatic HCV infection. Furthermore, MAIT cell functionality was systematically studied. We observed a reduced frequency of MAIT cells. However, remaining cells presented with a near-to-normal phenotype in acute infection, which contrasted with a significant dysfunction upon stimulation that was not restored after viral clearance. Notably, DNT and γδ T cells displayed a strong activation ex-vivo in acute HCV infection, which subsequently normalized during the treatment. In addition, DNT cell activation was specifically associated with liver inflammation and inflammatory cytokines. Altogether, these data provide evidence that UTCs respond in a cell type-specific manner during symptomatic HCV infection. However, even if early treatment is initiated, long-lasting imprints within UTCs remain over time.
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Affiliation(s)
- Yanqin Du
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Tanvi Khera
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Benedikt Strunz
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Katja Deterding
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Daniel Todt
- Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany.,European Virus Bioinformatics Center (EVBC), Jena, Germany
| | - Norman Woller
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Sophie Anna Engelskircher
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Svenja Hardtke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), HepNet Study-House, Hannover, Germany
| | - Kerstin Port
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Andrea Ponzetta
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Eike Steinmann
- Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), HepNet Study-House, Hannover, Germany.,Center for Individualized Infection Medicine (CIIM), Hannover, Germany.,Twincore, Centre for Experimental and Clinical Infection Research, Hannover, Germany.,Cluster of Excellence Resolving Infection Susceptibility (RESIST: EXC), Hannover Medical School, Hannover, Germany
| | - Julia Hengst
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Niklas K Björkström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Heiner Wedemeyer
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), HepNet Study-House, Hannover, Germany
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- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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6
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Hetemäki I, Kaustio M, Kinnunen M, Heikkilä N, Keskitalo S, Nowlan K, Miettinen S, Sarkkinen J, Glumoff V, Andersson N, Kettunen K, Vanhanen R, Nurmi K, Eklund KK, Dunkel J, Mäyränpää MI, Schlums H, Arstila TP, Kisand K, Bryceson YT, Peterson P, Otava U, Syrjänen J, Saarela J, Varjosalo M, Kekäläinen E. Loss-of-function mutation in IKZF2 leads to immunodeficiency with dysregulated germinal center reactions and reduction of MAIT cells. Sci Immunol 2021; 6:eabe3454. [PMID: 34826260 DOI: 10.1126/sciimmunol.abe3454] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Iivo Hetemäki
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Meri Kaustio
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Matias Kinnunen
- Institute of Biotechnology, HiLIFE Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Nelli Heikkilä
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Salla Keskitalo
- Institute of Biotechnology, HiLIFE Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Kirsten Nowlan
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Simo Miettinen
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Joona Sarkkinen
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Virpi Glumoff
- Research Unit of Biomedicine, University of Oulu, Oulu, Finland
| | - Noora Andersson
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kaisa Kettunen
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland.,Department of Clinical Genetics and HUSLAB Laboratory of Genetics, Helsinki University Hospital, Helsinki, Finland
| | - Reetta Vanhanen
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Katariina Nurmi
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kari K Eklund
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Orton Orthopaedic Hospital of the Orton Foundation, Helsinki, Finland
| | - Johannes Dunkel
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mikko I Mäyränpää
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Heinrich Schlums
- Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - T Petteri Arstila
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kai Kisand
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Yenan T Bryceson
- Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden.,Broegelmann Research Laboratory, Department of Clinical Sciences, University of Bergen, Bergen, Norway
| | - Pärt Peterson
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Ulla Otava
- Infectious Disease Unit, Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Jaana Syrjänen
- Infectious Disease Unit, Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Janna Saarela
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland.,Department of Clinical Genetics and HUSLAB Laboratory of Genetics, Helsinki University Hospital, Helsinki, Finland.,Centre for Molecular Medicine Norway (NCMM), University of Oslo, Oslo, Norway.,Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Markku Varjosalo
- Institute of Biotechnology, HiLIFE Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Eliisa Kekäläinen
- Translational Immunology Research Program, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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7
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Schubert K, Karkossa I, Schor J, Engelmann B, Steinheuer LM, Bruns T, Rolle-Kampczyk U, Hackermüller J, von Bergen M. A Multi-Omics Analysis of Mucosal-Associated-Invariant T Cells Reveals Key Drivers of Distinct Modes of Activation. Front Immunol 2021; 12:616967. [PMID: 34108957 PMCID: PMC8183572 DOI: 10.3389/fimmu.2021.616967] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 04/19/2021] [Indexed: 12/17/2022] Open
Abstract
The function of mucosal-associated invariant T (MAIT) cells highly depends on the mode of activation, either by recognition of bacterial metabolites via their T cell receptor (TCR) or in a TCR-independent manner via cytokines. The underlying molecular mechanisms are not entirely understood. To define the activation of MAIT cells on the molecular level, we applied a multi-omics approach with untargeted transcriptomics, proteomics and metabolomics. Transcriptomic analysis of E. coli- and TCR-activated MAIT cells showed a distinct transcriptional reprogramming, including altered pathways, transcription factors and effector molecules. We validated the consequences of this reprogramming on the phenotype by proteomics and metabolomics. Thus, and to distinguish between TCR-dependent and -independent activation, MAIT cells were stimulated with IL12/IL18, anti-CD3/CD28 or both. Only a combination of both led to full activation of MAIT cells, comparable to activation by E. coli. Using an integrated network-based approach, we identified key drivers of the distinct modes of activation, including cytokines and transcription factors, as well as negative feedback regulators like TWIST1 or LAG3. Taken together, we present novel insights into the biological function of MAIT cells, which may represent a basis for therapeutic approaches to target MAIT cells in pathological conditions.
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Affiliation(s)
- Kristin Schubert
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Isabel Karkossa
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Jana Schor
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Beatrice Engelmann
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Lisa Maria Steinheuer
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Tony Bruns
- Department of Medicine III, University Hospital Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Aachen, Germany
| | - Ulrike Rolle-Kampczyk
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Jörg Hackermüller
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Martin von Bergen
- Department of Molecular Systems Biology, Helmholtz-Centre for Environmental Research (UFZ), Leipzig, Germany
- Institute of Biochemistry, Leipzig University, Leipzig, Germany
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8
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Sia WR, Hey YY, Foo R, Wang LF, Leeansyah E. Culture, expansion, and flow-cytometry-based functional analysis of pteropid bat MR1-restricted unconventional T cells. STAR Protoc 2021; 2:100487. [PMID: 34041501 PMCID: PMC8141941 DOI: 10.1016/j.xpro.2021.100487] [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] [Indexed: 11/09/2022] Open
Abstract
Bats harbor viruses of global public health significance. Understanding bat immune systems may provide intervention strategies to prevent zoonotic disease transmission and identify therapeutic targets. This protocol describes how to culture and expand pteropid bat unconventional T cells, restricted by the MHC-I-related protein 1 (MR1), an MHC-I-like protein. Using multicolor flow-cytometry-based techniques, we examine pteropid MR1T cell functionality, including proliferative capacity, cytotoxicity, and cytokine production. This protocol can be adapted to aid immunological research in other bat species. For complete details on the use and execution of this protocol, please refer to Leeansyah et al. (2020b) Studies into bat immune systems are hampered by the lack of specific protocols Protocol describes culture and expansion of pteropid bat MR1-restricted T cells Performs antigen-specific stimulations of pteropid bat MR1-restricted T cells Flow-cytometry-based analyses of proliferation, cytotoxicity, and cytokine production
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Affiliation(s)
- Wan Rong Sia
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
| | - Ying Ying Hey
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Randy Foo
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Lin-Fa Wang
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,SingHealth Duke-NUS Global Health Institute, Singapore 169857, Singapore
| | - Edwin Leeansyah
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China.,Precision Medicine and Healthcare Research Center, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, People's Republic of China.,Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14183 Stockholm, Sweden
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9
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Sortino O, Dias J, Anderson M, Laidlaw E, Leeansyah E, Lisco A, Sheikh V, Sandberg JK, Sereti I. Preserved Mucosal-Associated Invariant T-Cell Numbers and Function in Idiopathic CD4 Lymphocytopenia. J Infect Dis 2020; 224:715-725. [PMID: 34398238 DOI: 10.1093/infdis/jiaa782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 12/18/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Mucosal-associated invariant T (MAIT) cells constitute a subset of unconventional, MR1-restricted T cells involved in antimicrobial responses as well as inflammatory, allergic, and autoimmune diseases. Chronic infection and inflammatory disorders as well as immunodeficiencies are often associated with decline and/or dysfunction of MAIT cells. METHODS We investigated the MAIT cells in patients with idiopathic CD4+ lymphocytopenia (ICL), a syndrome characterized by consistently low CD4 T-cell counts (<300 cell/µL) in the absence of HIV infection or other known immunodeficiency, and by susceptibility to certain opportunistic infections. RESULTS The numbers, phenotype, and function of MAIT cells in peripheral blood were preserved in ICL patients compared to healthy controls. Administration of interleukin-7 (IL-7) to ICL patients expanded the CD8+ MAIT-cell subset, with maintained responsiveness and effector functions after IL-7 treatment. CONCLUSIONS ICL patients maintain normal levels and function of MAIT cells, preserving some antibacterial responses despite the deficiency in CD4+ T cells. CLINICAL TRIALS REGISTRATION NCT00867269.
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Affiliation(s)
- Ornella Sortino
- Clinical Research Directorate/Clinical Monitoring Leidos Research Program, Leidos Biomedical Research, Inc., National Cancer Institute Campus at Frederick, Frederick, Maryland, USA
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Joana Dias
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Megan Anderson
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Elizabeth Laidlaw
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Edwin Leeansyah
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
- Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China
| | - Andrea Lisco
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Virginia Sheikh
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Irini Sereti
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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10
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Haeryfar SMM. On invariant T cells and measles: A theory of "innate immune amnesia". PLoS Pathog 2020; 16:e1009071. [PMID: 33332470 PMCID: PMC7745983 DOI: 10.1371/journal.ppat.1009071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- S. M. Mansour Haeryfar
- Department of Microbiology and Immunology, Western University, London, Ontario, Canada
- Department of Medicine, Division of Clinical Immunology & Allergy, Western University, London, Ontario, Canada
- Department of Surgery, Division of General Surgery, Western University, London, Ontario, Canada
- Centre for Human Immunology, Western University, London, Ontario, Canada
- * E-mail:
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11
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Leeansyah E, Hey YY, Sia WR, Ng JHJ, Gulam MY, Boulouis C, Zhu F, Ahn M, Mak JYW, Fairlie DP, Kwa ALH, Sandberg JK, Wang LF. MR1-Restricted T Cells with MAIT-like Characteristics Are Functionally Conserved in the Pteropid Bat Pteropus alecto. iScience 2020; 23:101876. [PMID: 33344919 PMCID: PMC7736909 DOI: 10.1016/j.isci.2020.101876] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 11/10/2020] [Accepted: 11/24/2020] [Indexed: 01/07/2023] Open
Abstract
Bats are reservoirs for a large number of viruses which have potential to cause major human disease outbreaks, including the current coronavirus disease 2019 (COVID-19) pandemic. Major efforts are underway to understand bat immune response to viruses, whereas much less is known about their immune responses to bacteria. In this study, MR1-restricted T (MR1T) cells were detected through the use of MR1 tetramers in circulation and tissues of Pteropus alecto (Pa) bats. Pa MR1T cells exhibited weak responses to MR1-presented microbial metabolites at resting state. However, following priming with MR1-presented agonist they proliferated, upregulated critical transcription factors and cytolytic proteins, and gained transient expression of Th1/17-related cytokines and antibacterial cytotoxicity. Collectively, these findings show that the Pa bat immune system encompasses an abundant and functionally conserved population of MR1T cells with mucosal-associated invariant T-like characteristics, suggesting that MR1 and MR1T cells also play a significant role in bat immune defense. MR1T cells are present in Pa bats and react to MR1-presented microbial metabolites Pa MR1T cells upregulate Prf and MAIT-associated TFs upon culture with MR1 agonists Upon stimulation, Pa MR1T cells rapidly and transiently express TNF and IL-17 Pa MR1T cells kill E. coli and MR1 agonist-pulsed cells in an MR1-dependent manner
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Affiliation(s)
- Edwin Leeansyah
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14183 Stockholm, Sweden.,Precision Medicine and Healthcare Research Center, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, 518055 Shenzhen, People's Republic of China
| | - Ying Ying Hey
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Wan Rong Sia
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Justin Han Jia Ng
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Muhammad Yaaseen Gulam
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Caroline Boulouis
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14183 Stockholm, Sweden
| | - Feng Zhu
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Matae Ahn
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Jeffrey Y W Mak
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - David P Fairlie
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Andrea Lay Hoon Kwa
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,Department of Pharmacy, Singapore General Hospital, Singapore 169608, Singapore
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14183 Stockholm, Sweden
| | - Lin-Fa Wang
- Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169857, Singapore.,SingHealth Duke-NUS Global Health Institute, Singapore 169857, Singapore
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12
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Human MAIT cell cytolytic effector proteins synergize to overcome carbapenem resistance in Escherichia coli. PLoS Biol 2020; 18:e3000644. [PMID: 32511236 PMCID: PMC7302869 DOI: 10.1371/journal.pbio.3000644] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 06/18/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023] Open
Abstract
Mucosa-associated invariant T (MAIT) cells are abundant antimicrobial T cells in humans and recognize antigens derived from the microbial riboflavin biosynthetic pathway presented by the MHC-Ib-related protein (MR1). However, the mechanisms responsible for MAIT cell antimicrobial activity are not fully understood, and the efficacy of these mechanisms against antibiotic resistant bacteria has not been explored. Here, we show that MAIT cells mediate MR1-restricted antimicrobial activity against Escherichia coli clinical strains in a manner dependent on the activity of cytolytic proteins but independent of production of pro-inflammatory cytokines or induction of apoptosis in infected cells. The combined action of the pore-forming antimicrobial protein granulysin and the serine protease granzyme B released in response to T cell receptor (TCR)-mediated recognition of MR1-presented antigen is essential to mediate control against both cell-associated and free-living, extracellular forms of E. coli. Furthermore, MAIT cell-mediated bacterial control extends to multidrug-resistant E. coli primary clinical isolates additionally resistant to carbapenems, a class of last resort antibiotics. Notably, high levels of granulysin and granzyme B in the MAIT cell secretomes directly damage bacterial cells by increasing their permeability, rendering initially resistant E. coli susceptible to the bactericidal activity of carbapenems. These findings define the role of cytolytic effector proteins in MAIT cell-mediated antimicrobial activity and indicate that granulysin and granzyme B synergize to restore carbapenem bactericidal activity and overcome carbapenem resistance in E. coli. Mucosa-associated invariant T (MAIT) cells are abundant antimicrobial T cells in humans that recognize bacterial metabolites. This study shows that MAIT cells exert potent antimicrobial activity against both cell-associated and extracellular forms of Escherichia coli, including strains that are resistant to the last resort antibiotics carbapenems.
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13
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Boulouis C, Gorin JB, Dias J, Bergman P, Leeansyah E, Sandberg JK. Opsonization-Enhanced Antigen Presentation by MR1 Activates Rapid Polyfunctional MAIT Cell Responses Acting as an Effector Arm of Humoral Antibacterial Immunity. THE JOURNAL OF IMMUNOLOGY 2020; 205:67-77. [PMID: 32434941 DOI: 10.4049/jimmunol.2000003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/30/2020] [Indexed: 12/27/2022]
Abstract
Mucosa-associated invariant T (MAIT) cells are innate-like antimicrobial T cells recognizing a breadth of important pathogens via presentation of microbial riboflavin metabolite Ags by MHC class Ib-related (MR1) molecules. However, the interaction of human MAIT cells with adaptive immune responses and the role they may play in settings of vaccinology remain relatively little explored. In this study we investigated the interplay between MAIT cell-mediated antibacterial effector functions and the humoral immune response. IgG opsonization of the model microbe Escherichia coli with pooled human sera markedly enhanced the capacity of monocytic APC to stimulate MAIT cells. This effect included greater sensitivity of recognition and faster response kinetics, as well as a markedly higher polyfunctionality and magnitude of MAIT cell responses involving a range of effector functions. The boost of MAIT cell responses was dependent on strongly enhanced MR1-mediated Ag presentation via increased FcγR-mediated uptake and signaling primarily mediated by FcγRI. To investigate possible translation of this effect to a vaccine setting, sera from human subjects before and after vaccination with the 13-valent-conjugated Streptococcus pneumoniae vaccine were assessed in a MAIT cell activation assay. Interestingly, vaccine-induced Abs enhanced Ag presentation to MAIT cells, resulting in more potent effector responses. These findings indicate that enhancement of Ag presentation by IgG opsonization allows innate-like MAIT cells to mount a faster, stronger, and qualitatively more complex response and to function as an effector arm of vaccine-induced humoral adaptive antibacterial immunity.
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Affiliation(s)
- Caroline Boulouis
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Jean-Baptiste Gorin
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Joana Dias
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Peter Bergman
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 14152 Stockholm, Sweden.,Infectious Disease Clinic, Immunodeficiency Unit, Karolinska University Hospital, Huddinge, 14186 Stockholm, Sweden; and
| | - Edwin Leeansyah
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden.,Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169587 Singapore
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, 14152 Stockholm, Sweden;
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14
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Sia WR, Boulouis C, Gulam MY, Kwa ALH, Sandberg JK, Leeansyah E. Quantification of Human MAIT Cell-Mediated Cellular Cytotoxicity and Antimicrobial Activity. Methods Mol Biol 2020; 2098:149-165. [PMID: 31792821 DOI: 10.1007/978-1-0716-0207-2_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The mucosa-associated invariant T (MAIT) cells represent the most abundant population of antimicrobial T cells in humans. When encountering cells infected with riboflavin-producing bacteria, this innate-like T cell population rapidly release a plethora of pro-inflammatory cytokines, mediates antimicrobial activity, and kill infected cells. Here, we describe methodological approaches and protocols to measure their cytotoxicity and antimicrobial effector function using multi-color flow cytometry-based and standard microbiological techniques. We provide specific guidance on protocols and describe potential pitfalls for each of the presented methodologies. Finally, we discuss potential applications and current limitations of our approaches to the study of human MAIT cell antimicrobial properties.
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Affiliation(s)
- Wan Rong Sia
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Caroline Boulouis
- Department of Medicine, Center for Infectious Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Muhammad Yaaseen Gulam
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Andrea Lay Hoon Kwa
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
- Department of Pharmacy, Singapore General Hospital, Singapore, Singapore
| | - Johan K Sandberg
- Department of Medicine, Center for Infectious Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Edwin Leeansyah
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore.
- Department of Medicine, Center for Infectious Medicine, Karolinska Institutet, Stockholm, Sweden.
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15
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MAIT Cells Are Major Contributors to the Cytokine Response in Group A Streptococcal Toxic Shock Syndrome. Proc Natl Acad Sci U S A 2019; 116:25923-25931. [PMID: 31772015 PMCID: PMC6926028 DOI: 10.1073/pnas.1910883116] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Bacterial toxins belonging to the family of superantigens are potent immunostimulatory antigens capable of activating T cells in a nonconventional manner. This results in an overzealous activation of immune cells and release of pathologic levels of pro-inflammatory cytokines, which underlies severe disease manifestations such as streptococcal toxic shock syndrome. Here, we provide evidence that mucosal-associated invariant T (MAIT) cells are major contributors to the overall cytokine response elicited by group A streptococci. Both streptococcal superantigens and surface-attached bacterial factors activate MAIT cells, but through different mechanisms. Furthermore, activated MAIT cells could be detected in patients during the acute phase of streptococcal toxic shock syndrome. Thus, this study identifies an actor and potential target for intervention in streptococcal toxic shock syndrome. Streptococcal toxic shock syndrome (STSS) is a rapidly progressing, life-threatening, systemic reaction to invasive infection caused by group A streptococci (GAS). GAS superantigens are key mediators of STSS through their potent activation of T cells leading to a cytokine storm and consequently vascular leakage, shock, and multiorgan failure. Mucosal-associated invariant T (MAIT) cells recognize MR1-presented antigens derived from microbial riboflavin biosynthesis and mount protective innate-like immune responses against the microbes producing such metabolites. GAS lack de novo riboflavin synthesis, and the role of MAIT cells in STSS has therefore so far been overlooked. Here we have conducted a comprehensive analysis of human MAIT cell responses to GAS, aiming to understand the contribution of MAIT cells to the pathogenesis of STSS. We show that MAIT cells are strongly activated and represent the major T cell source of IFNγ and TNF in the early stages of response to GAS. MAIT cell activation is biphasic with a rapid TCR Vβ2-specific, TNF-dominated response to superantigens and a later IL-12- and IL-18-dependent, IFNγ-dominated response to both bacterial cells and secreted factors. Depletion of MAIT cells from PBMC resulted in decreased total production of IFNγ, IL-1β, IL-2, and TNFβ. Peripheral blood MAIT cells in patients with STSS expressed elevated levels of the activation markers CD69, CD25, CD38, and HLA-DR during the acute compared with the convalescent phase. Our data demonstrate that MAIT cells are major contributors to the early cytokine response to GAS, and are therefore likely to contribute to the pathological cytokine storm underlying STSS.
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16
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Merlini E, Cerrone M, van Wilgenburg B, Swadling L, Cannizzo ES, d'Arminio Monforte A, Klenerman P, Marchetti G. Association Between Impaired Vα7.2+CD161++CD8+ (MAIT) and Vα7.2+CD161-CD8+ T-Cell Populations and Gut Dysbiosis in Chronically HIV- and/or HCV-Infected Patients. Front Microbiol 2019; 10:1972. [PMID: 31555223 PMCID: PMC6722213 DOI: 10.3389/fmicb.2019.01972] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/12/2019] [Indexed: 01/06/2023] Open
Abstract
Both HIV and HCV infections feature increased microbial translocation (MT) and gut dysbiosis that affect immune homeostasis and disease outcome. Given their commitment to antimicrobial mucosal immunity, we investigated mucosal-associated invariant T (MAIT) cells and Vα7.2+CD161- T-cell frequency/function and their possible associations with MT and gut dysbiosis, in chronic HIV and/or HCV infections. We enrolled 56 virally infected (VI) patients (pts): 13 HIV+ on suppressive cART (HIV-RNA < 40cp/ml), 13 HCV+ naive to DAA (direct-acting antiviral) anti-HCV agents; 30 HCV+/HIV+ on suppressive cART and naive to anti-HCV. 13 age-matched healthy controls (HC) were enrolled. For Vα7.2+CD161++ and Vα7.2+CD161-CD8+ T cells we assessed: activation (CD69), exhaustion (PD1/CD39), and cytolytic activity (granzymeB/perforin). Following PMA/ionomycin and Escherichia coli stimulation we measured intracellular IL17/TNFα/IFNγ. Markers of microbial translocation (Plasma LPS, 16S rDNA, EndoCAb and I-FABP) were quantified. In 5 patients per group we assessed stool microbiota composition by 16S targeted metagenomics sequencing (alpha/beta diversity, relative abundance). Compared to controls, virally infected pts displayed significantly lower circulating Vα7.2+CD161++CD8+ MAIT cells (p = 0.001), yet expressed higher perforin (p = 0.004) and granzyme B (p = 0.002) on CD8+ MAIT cells. Upon E. coli stimulation, the residual MAIT cells are less functional particularly those from HIV+/HCV+ patients. Conversely, in virally infected pts, Vα7.2+CD161-CD8+ cells were comparable in frequency, highly activated/exhausted (CD69+: p = 0.002; PD-1+: p = 0.030) and with cytolytic potential (perforin+: p < 0.0001), yet were poorly responsive to ex vivo stimulation. A profound gut dysbiosis characterized virally infected pts, especially HCV+/HIV+ co-infected patients, delineating a Firmicutes-poor/Bacteroidetes-rich microbiota, with significant associations with MAIT cell frequency/function. Irrespective of mono/dual infection, HIV+ and HCV+ patients display depleted, yet activated/cytolytic MAIT cells with reduced ex vivo function, suggesting an impoverished pool, possibly due to continuous bacterial challenge. The MAIT cell ability to respond to bacterial stimulation correlates with the presence of Firmicutes and Bacteroidetes, possibly suggesting an association between gut dysbiosis and MAIT cell function and posing viral-mediated dysbiosis as a potential key player in the hampered anti-bacterial MAIT ability.
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Affiliation(s)
- Esther Merlini
- Department of Health Sciences, Clinic of Infectious Diseases, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Maddalena Cerrone
- Department of Health Sciences, Clinic of Infectious Diseases, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy.,Chelsea and Westminster Hospital NHS Foundation Trust, London, United Kingdom
| | - Bonnie van Wilgenburg
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, United Kingdom
| | - Leo Swadling
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, United Kingdom
| | - E Stefania Cannizzo
- Department of Health Sciences, Clinic of Infectious Diseases, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Antonella d'Arminio Monforte
- Department of Health Sciences, Clinic of Infectious Diseases, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Paul Klenerman
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, United Kingdom
| | - Giulia Marchetti
- Department of Health Sciences, Clinic of Infectious Diseases, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
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17
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Dias J, Hengst J, Parrot T, Leeansyah E, Lunemann S, Malone DFG, Hardtke S, Strauss O, Zimmer CL, Berglin L, Schirdewahn T, Ciesek S, Marquardt N, von Hahn T, Manns MP, Cornberg M, Ljunggren HG, Wedemeyer H, Sandberg JK, Björkström NK. Chronic hepatitis delta virus infection leads to functional impairment and severe loss of MAIT cells. J Hepatol 2019; 71:301-312. [PMID: 31100314 PMCID: PMC6642010 DOI: 10.1016/j.jhep.2019.04.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Hepatitis delta virus (HDV) infection is the most severe form of viral hepatitis. Although HDV-associated liver disease is considered immune-mediated, adaptive immune responses against HDV are weak. Thus, the role of several other cell-mediated mechanisms such as those driven by mucosa-associated invariant T (MAIT) cells, a group of innate-like T cells highly enriched in the human liver, has not been extensively studied in clinical HDV infection. METHODS MAIT cells from a sizeable cohort of patients with chronic HDV were analyzed ex vivo and in vitro after stimulation. Results were compared with MAIT cells from hepatitis B virus (HBV) monoinfected patients and healthy controls. RESULTS Circulating MAIT cells were dramatically decreased in the peripheral blood of HDV-infected patients. Signs of decline were also observed in the liver. In contrast, only a modest decrease of circulating MAIT cells was noted in HBV monoinfection. Unsupervised high-dimensional analysis of residual circulating MAIT cells in chronic HDV infection revealed the appearance of a compound phenotype of CD38hiPD-1hiCD28loCD127loPLZFloEomesloHelioslo cells indicative of activation. Corroborating these results, MAIT cells exhibited a functionally impaired responsiveness. In parallel to MAIT cell loss, HDV-infected patients exhibited signs of monocyte activation and increased levels of proinflammatory cytokines IL-12 and IL-18. In vitro, IL-12 and IL-18 induced an activated MAIT cell phenotype similar to the one observed ex vivo in HDV-infected patients. These cytokines also promoted MAIT cell death, suggesting that they may contribute to MAIT cell activation and subsequent loss during HDV infection. CONCLUSIONS These results suggest that chronic HDV infection engages the MAIT cell compartment causing activation, functional impairment, and subsequent progressive loss of MAIT cells as the HDV-associated liver disease progresses. LAY SUMMARY Hepatitis delta virus (HDV) infection is the most severe form of viral hepatitis. We found that in patients with HDV, a subset of innate-like T cells called mucosa-associated invariant T cells (or MAIT cells), which are normally abundant in peripheral blood and the liver, are activated, functionally impaired and severely depleted.
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Affiliation(s)
- Joana Dias
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Julia Hengst
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Tiphaine Parrot
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Edwin Leeansyah
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore 169587, Singapore
| | - Sebastian Lunemann
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany; Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - David F G Malone
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Svenja Hardtke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Otto Strauss
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Christine L Zimmer
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lena Berglin
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas Schirdewahn
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Sandra Ciesek
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Nicole Marquardt
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas von Hahn
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Michael P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Hans-Gustaf Ljunggren
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany; Department of Gastroenterology and Hepatology, Essen University Hospital, Essen, Germany
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Niklas K Björkström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
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18
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Salou M, Legoux F, Gilet J, Darbois A, du Halgouet A, Alonso R, Richer W, Goubet AG, Daviaud C, Menger L, Procopio E, Premel V, Lantz O. A common transcriptomic program acquired in the thymus defines tissue residency of MAIT and NKT subsets. J Exp Med 2018; 216:133-151. [PMID: 30518599 PMCID: PMC6314520 DOI: 10.1084/jem.20181483] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/27/2018] [Accepted: 11/19/2018] [Indexed: 01/16/2023] Open
Abstract
Salou et al. wondered what could differentiate MAIT and NKT cells, if not for TCR specificity. Once split according to RORγt and T-bet–expressing subsets, MAIT and NKT share almost identical transcriptional programs acquired in the thymus, which result in specific tissue residency patterns. Mucosal-associated invariant T (MAIT) cells are abundant T cells with unique specificity for microbial metabolites. MAIT conservation along evolution indicates important functions, but their low frequency in mice has hampered their detailed characterization. Here, we performed the first transcriptomic analysis of murine MAIT cells. MAIT1 (RORγtneg) and MAIT17 (RORγt+) subsets were markedly distinct from mainstream T cells, but quasi-identical to NKT1 and NKT17 subsets. The expression of similar programs was further supported by strong correlations of MAIT and NKT frequencies in various organs. In both mice and humans, MAIT subsets expressed gene signatures associated with tissue residency. Accordingly, parabiosis experiments demonstrated that MAIT and NKT cells are resident in the spleen, liver, and lungs, with LFA1/ICAM1 interactions controlling MAIT1 and NKT1 retention in spleen and liver. The transcriptional program associated with tissue residency was already expressed in thymus, as confirmed by adoptive transfer experiments. Altogether, shared thymic differentiation processes generate “preset” NKT and MAIT subsets with defined effector functions, associated with specific positioning into tissues.
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Affiliation(s)
- Marion Salou
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - François Legoux
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Jules Gilet
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Aurélie Darbois
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Anastasia du Halgouet
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Ruby Alonso
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Wilfrid Richer
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Anne-Gaëlle Goubet
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | | | - Laurie Menger
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Emanuele Procopio
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Virginie Premel
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France
| | - Olivier Lantz
- Institut National de la Santé et de la Recherche Médicale U932, PSL University, Institut Curie, Paris, France .,Laboratoire d'Immunologie Clinique, Institut Curie, Paris, France.,Centre d'Investigation Clinique en Biothérapie Gustave-Roussy Institut Curie (CIC-BT1428) Institut Curie, Paris, France
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19
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The CD4 -CD8 - MAIT cell subpopulation is a functionally distinct subset developmentally related to the main CD8 + MAIT cell pool. Proc Natl Acad Sci U S A 2018; 115:E11513-E11522. [PMID: 30442667 PMCID: PMC6298106 DOI: 10.1073/pnas.1812273115] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Mucosa-associated invariant T (MAIT) cells are unconventional innate-like T cells recognizing microbial riboflavin metabolites presented by the monomorphic MR1 molecule. Here, we show that the CD8+CD4− and CD8−CD4− subpopulations of human MAIT cells represent transcriptionally and phenotypically discrete subsets with distinct functional profiles. Furthermore, T cell receptor repertoire analysis, as well as MAIT cell data based on human fetal tissues, umbilical cord blood, and culture systems indicate that the CD8−CD4− subset may derive from the main CD8+CD4− MAIT cell pool. Thus, MAIT cells, a major antimicrobial effector T cell population in humans, segregate into two functionally distinct but developmentally related subsets separated by the expression of CD8. This functional difference may have significant implications in infectious and inflammatory diseases. Mucosa-associated invariant T (MAIT) cells are unconventional innate-like T cells that recognize microbial riboflavin metabolites presented by the MHC class I-like protein MR1. Human MAIT cells predominantly express the CD8α coreceptor (CD8+), with a smaller subset lacking both CD4 and CD8 (double-negative, DN). However, it is unclear if these two MAIT cell subpopulations distinguished by CD8α represent functionally distinct subsets. Here, we show that the two MAIT cell subsets express divergent transcriptional programs and distinct patterns of classic T cell transcription factors. Furthermore, CD8+ MAIT cells have higher levels of receptors for IL-12 and IL-18, as well as of the activating receptors CD2, CD9, and NKG2D, and display superior functionality following stimulation with riboflavin-autotrophic as well as riboflavin-auxotrophic bacterial strains. DN MAIT cells display higher RORγt/T-bet ratio, and express less IFN-γ and more IL-17. Furthermore, the DN subset displays enrichment of an apoptosis gene signature and higher propensity for activation-induced apoptosis. During development in human fetal tissues, DN MAIT cells are more mature and accumulate over gestational time with reciprocal contraction of the CD8+ subset. Analysis of the T cell receptor repertoire reveals higher diversity in CD8+ MAIT cells than in DN MAIT cells. Finally, chronic T cell receptor stimulation of CD8+ MAIT cells in an in vitro culture system supports the accumulation and maintenance of the DN subpopulation. These findings define human CD8+ and DN MAIT cells as functionally distinct subsets and indicate a derivative developmental relationship.
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20
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Shahin T, Aschenbrenner D, Cagdas D, Bal SK, Conde CD, Garncarz W, Medgyesi D, Schwerd T, Karaatmaca B, Cetinkaya PG, Esenboga S, Twigg SRF, Cant A, Wilkie AOM, Tezcan I, Uhlig HH, Boztug K. Selective loss of function variants in IL6ST cause Hyper-IgE syndrome with distinct impairments of T-cell phenotype and function. Haematologica 2018; 104:609-621. [PMID: 30309848 PMCID: PMC6395342 DOI: 10.3324/haematol.2018.194233] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 10/03/2018] [Indexed: 12/20/2022] Open
Abstract
Hyper-IgE syndromes comprise a group of inborn errors of immunity. STAT3-deficient hyper-IgE syndrome is characterized by elevated serum IgE levels, recurrent infections and eczema, and characteristic skeletal anomalies. A loss-of-function biallelic mutation in IL6ST encoding the GP130 receptor subunit (p.N404Y) has very recently been identified in a singleton patient (herein referred to as PN404Y) as a novel etiology of hyper-IgE syndrome. Here, we studied a patient with hyper-IgE syndrome caused by a novel homozygous mutation in IL6ST (p.P498L; patient herein referred to as PP498L) leading to abrogated GP130 signaling after stimulation with IL-6 and IL-27 in peripheral blood mononuclear cells as well as IL-6 and IL-11 in fibroblasts. Extending the initial identification of selective GP130 deficiency, we aimed to dissect the effects of aberrant cytokine signaling on T-helper cell differentiation in both patients. Our results reveal the importance of IL-6 signaling for the development of CCR6-expressing memory CD4+ T cells (including T-helper 17-enriched subsets) and non-conventional CD8+T cells which were reduced in both patients. Downstream functional analysis of the GP130 mutants (p.N404Y and p.P498L) have shown differences in response to IL-27, with the p.P498L mutation having a more severe effect that is reflected by reduced T-helper 1 cells in this patient (PP498L) only. Collectively, our data suggest that characteristic features of GP130-deficient hyper-IgE syndrome phenotype are IL-6 and IL-11 dominated, and indicate selective roles of aberrant IL-6 and IL-27 signaling on the differentiation of T-cell subsets.
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Affiliation(s)
- Tala Shahin
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Dominik Aschenbrenner
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, UK
| | - Deniz Cagdas
- Section of Pediatric Immunology, Ihsan Doğramacı Children's Hospital, Hacettepe University, Ankara, Turkey.,Institute of Child Health, Hacettepe University, Ankara, Turkey
| | - Sevgi Köstel Bal
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatric Allergy and Immunology, Ankara University School of Medicine, Cebeci, Turkey
| | - Cecilia Domínguez Conde
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Wojciech Garncarz
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - David Medgyesi
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Tobias Schwerd
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, UK.,Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich, Germany
| | - Betül Karaatmaca
- Section of Pediatric Immunology, Ihsan Doğramacı Children's Hospital, Hacettepe University, Ankara, Turkey
| | - Pınar Gur Cetinkaya
- Section of Pediatric Immunology, Ihsan Doğramacı Children's Hospital, Hacettepe University, Ankara, Turkey
| | - Saliha Esenboga
- Section of Pediatric Immunology, Ihsan Doğramacı Children's Hospital, Hacettepe University, Ankara, Turkey
| | - Stephen R F Twigg
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, UK
| | - Andrew Cant
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Andrew O M Wilkie
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, UK
| | - Ilhan Tezcan
- Section of Pediatric Immunology, Ihsan Doğramacı Children's Hospital, Hacettepe University, Ankara, Turkey.,Institute of Child Health, Hacettepe University, Ankara, Turkey
| | - Holm H Uhlig
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, UK .,Department of Paediatrics, University of Oxford, UK
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria .,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria.,St. Anna Kinderspital and Children's Cancer Research Institute, Department of Pediatrics, Medical University of Vienna, Austria
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21
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Voigt J, Malone DFG, Dias J, Leeansyah E, Björkström NK, Ljunggren HG, Gröbe L, Klawonn F, Heyner M, Sandberg JK, Jänsch L. Proteome analysis of human CD56 neg NK cells reveals a homogeneous phenotype surprisingly similar to CD56 dim NK cells. Eur J Immunol 2018; 48:1456-1469. [PMID: 29999523 DOI: 10.1002/eji.201747450] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 05/07/2018] [Accepted: 07/03/2018] [Indexed: 12/30/2022]
Abstract
NK cells lacking CD56 (CD56neg ) were first identified in chronic HIV-1 infection. However, CD56neg NK cells also exist in healthy individuals, albeit in significantly lower numbers. Here, we provide an extensive proteomic characterisation of human CD56neg peripheral blood NK cells of healthy donors and compare them to their CD56dim and CD56bright counterparts. Unbiased large-scale surface receptor profiling clustered CD56neg cells as part of the main NK cell compartment and indicated an overall CD56dim -like phenotype. Total proteome analyses of CD56neg NK cells further confirmed their similarity with CD56dim NK cells, and revealed a complete cytolytic inventory with high levels of perforin and granzyme H and M. In the present study, twelve proteins discriminated CD56neg NK cells from CD56dim NK cells with nine up-regulated and three down-regulated proteins in the CD56neg NK cell population. Those proteins were functionally related to lytic granule composition and transport, interaction with the extracellular matrix, DNA transcription or repair, and proliferation. Corroborating these results, CD56neg NK cells showed modest cytotoxicity, degranulation, and IFN-ɣ secretion as compared to CD56dim NK cells. In conclusion, CD56neg NK cells constitute functionally competent cells sharing many features of bona fide CD56dim NK cells in healthy individuals, but with some distinct characteristics.
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Affiliation(s)
- Jenny Voigt
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - David F G Malone
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Joana Dias
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Edwin Leeansyah
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.,Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore
| | - Niklas K Björkström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Hans-Gustaf Ljunggren
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lothar Gröbe
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Frank Klawonn
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Department of Computer Science, Ostfalia University of Applied Sciences, Wolfenbuettel, Germany
| | - Maxi Heyner
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lothar Jänsch
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany
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22
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Kjer-Nielsen L, Corbett AJ, Chen Z, Liu L, Mak JY, Godfrey DI, Rossjohn J, Fairlie DP, McCluskey J, Eckle SB. An overview on the identification of MAIT cell antigens. Immunol Cell Biol 2018; 96:573-587. [PMID: 29656544 DOI: 10.1111/imcb.12057] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/05/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022]
Abstract
Mucosal associated invariant T (MAIT) cells are restricted by the monomorphic MHC class I-like molecule, MHC-related protein-1 (MR1). Until 2012, the origin of the MAIT cell antigens (Ags) was unknown, although it was established that MAIT cells could be activated by a broad range of bacteria and yeasts, possibly suggesting a conserved Ag. Using a combination of protein chemistry, mass spectrometry, cellular biology, structural biology and small molecule chemistry, we discovered MR1 ligands derived from folic acid (vitamin B9) and from an intermediate in the microbial biosynthesis of riboflavin (vitamin B2). While the folate derivative 6-formylpterin generally inhibited MAIT cell activation, two riboflavin pathway derivatives, 5-(2-oxopropylideneamino)-6-D-ribitylaminouracil and 5-(2-oxoethylideneamino)-6-D-ribitylaminouracil, were potent MAIT cell agonists. Other intermediates and derivatives of riboflavin synthesis displayed weak or no MAIT cell activation. Collectively, these studies revealed that in addition to peptide and lipid-based Ags, small molecule natural product metabolites are also ligands that can activate T cells expressing αβ T-cell receptors, and here we recount this discovery.
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Affiliation(s)
- Lars Kjer-Nielsen
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia
| | - Alexandra J Corbett
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia
| | - Zhenjun Chen
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia
| | - Ligong Liu
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jeffrey Yw Mak
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Dale I Godfrey
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Melbourne, Melbourne, VIC, 3000, Australia
| | - Jamie Rossjohn
- Infection and Immunity Program, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia.,Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, VIC, 3800, Australia.,Institute of Infection and Immunity, Cardiff University School of Medicine, Cardiff, CF14 4XN, UK
| | - David P Fairlie
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - James McCluskey
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia
| | - Sidonia Bg Eckle
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, 3000, Australia
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23
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Multiple layers of heterogeneity and subset diversity in human MAIT cell responses to distinct microorganisms and to innate cytokines. Proc Natl Acad Sci U S A 2017. [PMID: 28630305 DOI: 10.1073/pnas.1705759114] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mucosa-associated invariant T (MAIT) cells are a large innate-like T-cell subset in humans defined by invariant TCR Vα7.2 use and expression of CD161. MAIT cells recognize microbial riboflavin metabolites of bacterial or fungal origin presented by the monomorphic MR1 molecule. The extraordinary level of evolutionary conservation of MR1 and the limited known diversity of riboflavin metabolite antigens have suggested that MAIT cells are relatively homogeneous and uniform in responses against diverse microbes carrying the riboflavin biosynthesis pathway. The ability of MAIT cells to exhibit microbe-specific functional specialization has not been thoroughly investigated. Here, we found that MAIT cell responses against Escherichia coli and Candida albicans displayed microbe-specific polyfunctional response profiles, antigen sensitivity, and response magnitudes. MAIT cell effector responses against E. coli and C. albicans displayed differential MR1 dependency and TCR β-chain bias, consistent with possible divergent antigen subspecificities between these bacterial and fungal organisms. Finally, although the MAIT cell immunoproteome was overall relatively homogenous and consistent with an effector memory-like profile, it still revealed diversity in a set of natural killer cell-associated receptors. Among these, CD56, CD84, and CD94 defined a subset with higher expression of the transcription factors promyelocytic leukemia zinc finger (PLZF), eomesodermin, and T-bet and enhanced capacity to respond to IL-12 and IL-18 stimulation. Thus, the conserved and innate-like MAIT cells harbor multiple layers of functional heterogeneity as they respond to bacterial or fungal organisms or innate cytokines and adapt their antimicrobial response patterns in a stimulus-specific manner.
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