1
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Samer C, McWilliam HE, McSharry BP, Velusamy T, Burchfield JG, Stanton RJ, Tscharke DC, Rossjohn J, Villadangos JA, Abendroth A, Slobedman B. Multi-targeted loss of the antigen presentation molecule MR1 during HSV-1 and HSV-2 infection. iScience 2024; 27:108801. [PMID: 38303725 PMCID: PMC10831258 DOI: 10.1016/j.isci.2024.108801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 09/18/2023] [Accepted: 01/02/2024] [Indexed: 02/03/2024] Open
Abstract
The major histocompatibility complex (MHC), Class-I-related (MR1) molecule presents microbiome-synthesized metabolites to Mucosal-associated invariant T (MAIT) cells, present at sites of herpes simplex virus (HSV) infection. During HSV type 1 (HSV-1) infection there is a profound and rapid loss of MR1, in part due to expression of unique short 3 protein. Here we show that virion host shutoff RNase protein downregulates MR1 protein, through loss of MR1 transcripts. Furthermore, a third viral protein, infected cell protein 22, also downregulates MR1, but not classical MHC-I molecules. This occurs early in the MR1 trafficking pathway through proteasomal degradation. Finally, HSV-2 infection results in the loss of MR1 transcripts, and intracellular and surface MR1 protein, comparable to that seen during HSV-1 infection. Thus HSV coordinates a multifaceted attack on the MR1 antigen presentation pathway, potentially protecting infected cells from MAIT cell T cell receptor-mediated detection at sites of primary infection and reactivation.
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Affiliation(s)
- Carolyn Samer
- Infection, Immunity and Inflammation, School of Medical Sciences, Faculty of Medicine and Health, and the Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
| | - Hamish E.G. McWilliam
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, Australia
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, VIC, Australia
| | - Brian P. McSharry
- Infection, Immunity and Inflammation, School of Medical Sciences, Faculty of Medicine and Health, and the Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Thilaga Velusamy
- John Curtin School of Medical Research, Australian National University, Canberra, ACT, Australia
| | - James G. Burchfield
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
| | - Richard J. Stanton
- Division of Infection & Immunity, School of Medicine, Cardiff University, Cardiff, Wales
| | - David C. Tscharke
- John Curtin School of Medical Research, Australian National University, Canberra, ACT, Australia
| | - Jamie Rossjohn
- Division of Infection & Immunity, School of Medicine, Cardiff University, Cardiff, Wales
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Jose A. Villadangos
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, Australia
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, VIC, Australia
| | - Allison Abendroth
- Infection, Immunity and Inflammation, School of Medical Sciences, Faculty of Medicine and Health, and the Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
| | - Barry Slobedman
- Infection, Immunity and Inflammation, School of Medical Sciences, Faculty of Medicine and Health, and the Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
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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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Torre P, Brescia A, Giurato G, D’Auria R, Rizzo F, Motta BM, Giudice V, Selleri C, Zeppa P, Caputo A, Casolaro V, Persico M. Mucosal-Associated Invariant T Cells in T-Cell Non-Hodgkin Lymphomas: A Case Series. Cancers (Basel) 2022; 14:cancers14122921. [PMID: 35740587 PMCID: PMC9221487 DOI: 10.3390/cancers14122921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/09/2022] [Indexed: 01/27/2023] Open
Abstract
Simple Summary Mucosal-associated invariant T (MAIT) cells are a subgroup of T lymphocytes whose role has recently been investigated in several types of diseases, including cancer. However, little is known about these cells in lymphomas. In this case series, we investigated the presence of MAIT cells in biopsies obtained from patients diagnosed with T-cell non-Hodgkin lymphomas, uncommon hematological malignancies with often not clearly defined etiopathology. Abstract Background: Mucosal-associated invariant T (MAIT) cells are a subset of unconventional T lymphocytes expressing a semi-invariant α/β T-cell receptor (TCR). The physiological functions of these cells, which are particularly abundant in normal liver and mucosal sites, have become clear only in recent years, but their role in most human diseases is still unknown. Since the cellular origin and etiopathogenesis of most T-lymphomas are still elusive, we decided to explore the presence of MAIT cells in biopsies from these neoplasms. Methods: Sixteen biopsies obtained from patients with a T-cell lymphoma diagnosis were analyzed via immunofluorescence staining using an anti-Vα7.2 antibody and the MR1-antigen tetramer. Positive cases were subjected to a polymerase chain reaction for the detection of Vα7.2–Jα33, Vα7.2–Jα20, or Vα7.2–Jα12 rearrangements, followed by sequencing of the CDR3α region. Results: CD3+/Vα7.2+ and CD3+/MR1-Ag-tetramer+ cells were found in 4 of 16 samples analyzed. The identification of specific TCR rearrangements confirmed the presence of these cells in all four samples. PCR and sequencing results documented the presence of multiple clones of MAIT cells in each positive sample. Conclusions: MAIT cells are frequently found in T-cell lymphomas. More in-depth studies and a larger number of samples are needed to better clarify the contribution of MAIT cells to this rare neoplasm.
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Affiliation(s)
- Pietro Torre
- Internal Medicine and Hepatology Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy;
| | - Annalisa Brescia
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Giorgio Giurato
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Raffaella D’Auria
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Francesca Rizzo
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Benedetta Maria Motta
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Valentina Giudice
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy; (V.G.); (C.S.)
| | - Carmine Selleri
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy; (V.G.); (C.S.)
| | - Pio Zeppa
- Pathology Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy; (P.Z.); (A.C.)
| | - Alessandro Caputo
- Pathology Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy; (P.Z.); (A.C.)
| | - Vincenzo Casolaro
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (A.B.); (G.G.); (R.D.); (F.R.); (B.M.M.); (V.C.)
| | - Marcello Persico
- Internal Medicine and Hepatology Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, University of Salerno, 84131 Salerno, Italy;
- Correspondence:
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4
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Bhuiyan TR, Rahman MA, Trivedi S, Afroz T, Al Banna H, Hoq MR, Pop I, Jensen O, Rashu R, Uddin MI, Hossain M, Khan AI, Chowdhury F, Harris JB, Calderwood SB, Ryan ET, Qadri F, Leung DT. Mucosal-Associated Invariant T (MAIT) cells are highly activated in duodenal tissue of humans with Vibrio cholerae O1 infection: A preliminary report. PLoS Negl Trop Dis 2022; 16:e0010411. [PMID: 35551522 PMCID: PMC9129025 DOI: 10.1371/journal.pntd.0010411] [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: 04/27/2021] [Revised: 05/24/2022] [Accepted: 04/11/2022] [Indexed: 01/13/2023] Open
Abstract
Mucosal-associated invariant T (MAIT) cells are unconventional T lymphocytes with a semi-conserved TCRα, activated by the presentation of vitamin B metabolites by the MHC-I related protein, MR1, and with diverse innate and adaptive effector functions. The role of MAIT cells in acute intestinal infections, especially at the mucosal level, is not well known. Here, we analyzed the presence and phenotype of MAIT cells in duodenal biopsies and paired peripheral blood samples, in patients during and after culture-confirmed Vibrio cholerae O1 infection. Immunohistochemical staining of duodenal biopsies from cholera patients (n = 5, median age 32 years, range 26-44, 1 female) identified MAIT cells in the lamina propria of the crypts, but not the villi. By flow cytometry (n = 10, median age 31 years, range 23-36, 1 female), we showed that duodenal MAIT cells are more activated than peripheral MAIT cells (p < 0.01 across time points), although there were no significant differences between duodenal MAIT cells at day 2 and day 30. We found fecal markers of intestinal permeability and inflammation to be correlated with the loss of duodenal (but not peripheral) MAIT cells, and single-cell sequencing revealed differing T cell receptor usage between the duodenal and peripheral blood MAIT cells. In this preliminary report limited by a small sample size, we show that MAIT cells are present in the lamina propria of the duodenum during V. cholerae infection, and more activated than those in the blood. Future work into the trafficking and tissue-resident function of MAIT cells is warranted.
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Affiliation(s)
- Taufiqur R. Bhuiyan
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M. Arifur Rahman
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Shubhanshi Trivedi
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Taliman Afroz
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Hasan Al Banna
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Mohammad Rubel Hoq
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Ioana Pop
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Owen Jensen
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Rasheduzzaman Rashu
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | | | - Motaher Hossain
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Ashraful I. Khan
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Fahima Chowdhury
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Jason B. Harris
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Pediatrics, MassGeneral Hospital for Children, Boston, Massachusetts, United States of America
- Division of Pediatric Global Health, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Stephen B. Calderwood
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Edward T. Ryan
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Firdausi Qadri
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Daniel T. Leung
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- * E-mail:
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5
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Jensen O, Trivedi S, Meier JD, Fairfax KC, Hale JS, Leung DT. A subset of follicular helper-like MAIT cells can provide B cell help and support antibody production in the mucosa. Sci Immunol 2022; 7:eabe8931. [PMID: 35030034 DOI: 10.1126/sciimmunol.abe8931] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Owen Jensen
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.,Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT ,USA
| | - Shubhanshi Trivedi
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Jeremy D Meier
- Division of Otolaryngology-Head and Neck Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA.,Primary Children's Hospital, Salt Lake City, UT, USA
| | - Keke C Fairfax
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT ,USA
| | - J Scott Hale
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT ,USA
| | - Daniel T Leung
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.,Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT ,USA
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6
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Maleki KT, Tauriainen J, García M, Kerkman PF, Christ W, Dias J, Wigren Byström J, Leeansyah E, Forsell MN, Ljunggren HG, Ahlm C, Björkström NK, Sandberg JK, Klingström J. MAIT cell activation is associated with disease severity markers in acute hantavirus infection. CELL REPORTS MEDICINE 2021; 2:100220. [PMID: 33763658 PMCID: PMC7974553 DOI: 10.1016/j.xcrm.2021.100220] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 12/21/2020] [Accepted: 02/19/2021] [Indexed: 02/07/2023]
Abstract
Hantaviruses are zoonotic RNA viruses that cause severe acute disease in humans. Infected individuals have strong inflammatory responses that likely cause immunopathology. Here, we studied the response of mucosal-associated invariant T (MAIT) cells in peripheral blood of individuals with hemorrhagic fever with renal syndrome (HFRS) caused by Puumala orthohantavirus, a hantavirus endemic in Europe. We show that MAIT cell levels decrease in the blood during HFRS and that residual MAIT cells are highly activated. This activation correlates with HFRS severity markers. In vitro activation of MAIT cells by hantavirus-exposed antigen-presenting cells is dependent on type I interferons (IFNs) and independent of interleukin-18 (IL-18). These findings highlight the role of type I IFNs in virus-driven MAIT cell activation and suggest a potential role of MAIT cells in the disease pathogenesis of viral infections. MAIT cells are activated in individuals with hemorrhagic fever with renal syndrome (HFRS) MAIT cell activation correlates with HFRS severity markers during hantavirus infection MAIT cell blood levels decline during acute HFRS Hantavirus-mediated MAIT cell activation is type I IFN dependent
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Affiliation(s)
- Kimia T Maleki
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Johanna Tauriainen
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Marina García
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Priscilla F Kerkman
- Department of Clinical Microbiology, Division of Infection & Immunology, Umeå University, Umeå, Sweden.,Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Wanda Christ
- 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
| | - Julia Wigren Byström
- Department of Clinical Microbiology, Division of Infection & Immunology, Umeå University, Umeå, Sweden
| | - Edwin Leeansyah
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.,Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, China.,Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Mattias N Forsell
- Department of Clinical Microbiology, Division of Infection & Immunology, Umeå University, Umeå, Sweden
| | - Hans-Gustaf Ljunggren
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Clas Ahlm
- Department of Clinical Microbiology, Division of Infection & Immunology, Umeå University, Umeå, Sweden
| | - Niklas K Björkström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Johan K Sandberg
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Jonas Klingström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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7
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Terpstra ML, Remmerswaal EBM, van der Bom-Baylon ND, Sinnige MJ, Kers J, van Aalderen MC, Geerlings SE, Bemelman FJ. Tissue-resident mucosal-associated invariant T (MAIT) cells in the human kidney represent a functionally distinct subset. Eur J Immunol 2020; 50:1783-1797. [PMID: 32652598 PMCID: PMC7689767 DOI: 10.1002/eji.202048644] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/24/2020] [Indexed: 12/13/2022]
Abstract
Mucosal‐associated invariant T (MAIT) cells are innate‐like T‐cells that recognize bacterial riboflavin metabolites. They are present in human blood but are abundant at barrier sites, including the liver, lungs, and kidneys, where they possess a CD69+/CD103+/− tissue‐resident phenotype. In renal tissue, MAIT cells likely defend against the ascending uropathogens responsible for urinary tract infections (UTIs), which are common, especially among renal transplant recipients (RTRs). Nevertheless, the functional role for MAIT cells in renal tissue and the influence of renal transplantation on MAIT cells remains unclear. Using multiparameter flow cytometry and the MR1‐tetramer, we characterized MAIT cell phenotype and function in healthy renal tissue (n = 6), renal transplants explanted after allograft failure (n = 14) and in blood from healthy controls (n = 20) and RTRs before and 1‐year after transplantation (n = 21). MAIT cells in renal tissue constitute a distinct CD69+CD103+/− population that displays typical phenotypic features of tissue‐resident T‐cells and is skewed toward IL‐2, GM‐CSF, and IL‐17A production upon stimulation. The circulating MAIT cell population was not decreased in number in RTRs pre‐ or post‐transplantation. Tissue‐resident MAIT cells in the kidney represent a functionally distinct population. This shows how MAIT cells in the kidney may be involved in the protection against microorganisms.
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Affiliation(s)
- Matty L Terpstra
- Division of Internal Medicine, Department of Nephrology, Renal Transplant Unit, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Internal Medicine, Infectious Diseases, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ester B M Remmerswaal
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Nelly D van der Bom-Baylon
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marjan J Sinnige
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jesper Kers
- Department of Pathology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Center for Analytical Sciences Amsterdam (CASA)-Biomolecular Systems Analytics, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Amsterdam, The Netherlands.,Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Michiel C van Aalderen
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Suzanne E Geerlings
- Department of Internal Medicine, Infectious Diseases, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Frederike J Bemelman
- Division of Internal Medicine, Department of Nephrology, Renal Transplant Unit, Amsterdam Infection & Immunity Institute (AI&II), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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8
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Ogongo P, Steyn AJ, Karim F, Dullabh KJ, Awala I, Madansein R, Leslie A, Behar SM. Differential skewing of donor-unrestricted and γδ T cell repertoires in tuberculosis-infected human lungs. J Clin Invest 2020; 130:214-230. [PMID: 31763997 PMCID: PMC6934215 DOI: 10.1172/jci130711] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/25/2019] [Indexed: 12/12/2022] Open
Abstract
Unconventional T cells that recognize mycobacterial antigens are of great interest as potential vaccine targets against tuberculosis (TB). This includes donor-unrestricted T cells (DURTs), such as mucosa-associated invariant T cells (MAITs), CD1-restricted T cells, and γδ T cells. We exploited the distinctive nature of DURTs and γδ T cell receptors (TCRs) to investigate the involvement of these T cells during TB in the human lung by global TCR sequencing. Making use of surgical lung resections, we investigated the distribution, frequency, and characteristics of TCRs in lung tissue and matched blood from individuals infected with TB. Despite depletion of MAITs and certain CD1-restricted T cells from the blood, we found that the DURT repertoire was well preserved in the lungs, irrespective of disease status or HIV coinfection. The TCRδ repertoire, in contrast, was highly skewed in the lungs, where it was dominated by Vδ1 and distinguished by highly localized clonal expansions, consistent with the nonrecirculating lung-resident γδ T cell population. These data show that repertoire sequencing is a powerful tool for tracking T cell subsets during disease.
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Affiliation(s)
- Paul Ogongo
- Africa Health Research Institute and.,School of Laboratory Medicine, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.,Institute of Primate Research, National Museums of Kenya, Nairobi, Kenya
| | | | | | - Kaylesh J Dullabh
- Department of Cardiothoracic Surgery, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Ismael Awala
- Department of Cardiothoracic Surgery, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Rajhmun Madansein
- Department of Cardiothoracic Surgery, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Alasdair Leslie
- Africa Health Research Institute and.,Department of Infection and Immunity, University College London, London, United Kingdom
| | - Samuel M Behar
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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9
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Souter MNT, Loh L, Li S, Meehan BS, Gherardin NA, Godfrey DI, Rossjohn J, Fairlie DP, Kedzierska K, Pellicci DG, Chen Z, Kjer-Nielsen L, Corbett AJ, McCluskey J, Eckle SBG. Characterization of Human Mucosal-associated Invariant T (MAIT) Cells. ACTA ACUST UNITED AC 2020; 127:e90. [PMID: 31763790 DOI: 10.1002/cpim.90] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Mucosal-associated invariant T (MAIT) cells are a subset of unconventional T cells restricted by the major histocompatibility complex (MHC) class I-like molecule MHC-related protein 1 (MR1). MAIT cells are found throughout the body, especially in human blood and liver. Unlike conventional T cells, which are stimulated by peptide antigens presented by MHC molecules, MAIT cells recognize metabolite antigens derived from an intermediate in the microbial biosynthesis of riboflavin. MAIT cells mediate protective immunity to infections by riboflavin-producing microbes via the production of cytokines and cytotoxicity. The discovery of stimulating MAIT cell antigens allowed for the development of an analytical tool, the MR1 tetramer, that binds specifically to the MAIT T cell receptor (TCR) and is becoming the gold standard for identification of MAIT cells by flow cytometry. This article describes protocols to characterize the phenotype of human MAIT cells in blood and tissues by flow cytometry using fluorescently labeled human MR1 tetramers alongside antibodies specific for MAIT cell markers. © 2019 by John Wiley & Sons, Inc. The main protocols include: Basic Protocol 1: Determining the frequency and steady-state surface phenotype of human MAIT cells Basic Protocol 2: Determining the activation phenotype of human MAIT cells in blood Basic Protocol 3: Characterizing MAIT cell TCRs using TCR-positive reporter cell lines Alternate protocols are provided for determining the absolute number, transcription factor phenotype, and TCR usage of human MAIT cells; and determining activation phenotype by staining for intracellular markers, measuring secreted cytokines, and measuring fluorescent dye dilution due to proliferation. Additional methods are provided for determining the capacity of MAIT cells to produce cytokine independently of antigen using plate-bound or bead-immobilized CD3/CD28 stimulation; and determining the MR1-Ag dependence of MAIT cell activation using MR1-blocking antibody or competitive inhibition. For TCR-positive reporter cell lines, methods are also provided for evaluating the MAIT TCR-mediated MR1-Ag response, determining the capacity of the reporter lines to produce cytokine independently of antigen, determining the MR1-Ag dependence of the reporter lines, and evaluating the MR1-Ag response of the reporter lines using IL-2 secretion. Support Protocols describe the preparation of PBMCs from human blood, the preparation of single-cell suspensions from tissue, the isolation of MAIT cells by FACS and MACS, cloning MAIT TCRα and β chain genes and MR1 genes for transduction, generating stably and transiently transfected cells lines, generating a stable MR1 knockout antigen-presenting cell line, and generating monocyte-derived dendritic cells.
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Affiliation(s)
- Michael N T Souter
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Australia
| | - Liyen Loh
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Shihan Li
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Australia
| | - Bronwyn S Meehan
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Nicholas A Gherardin
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Australia
| | - Dale I Godfrey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Australia
| | - Jamie Rossjohn
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Australia.,Institute of Infection and Immunity, Cardiff University School of Medicine, Heath Park, Wales, United Kingdom
| | - David P Fairlie
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Queensland, Brisbane, Australia
| | - Katherine Kedzierska
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Daniel G Pellicci
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,Murdoch Children's Research Institute, Parkville, Australia
| | - Zhenjun Chen
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Lars Kjer-Nielsen
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Alexandra J Corbett
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - James McCluskey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Sidonia B G Eckle
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
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10
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Ravi K, Chan CYS, Akoto C, Zhang W, Vatish M, Norris SA, Klenerman P, Hemelaar J. Changes in the Vα7.2+ CD161++ MAIT cell compartment in early pregnancy are associated with preterm birth in HIV-positive women. Am J Reprod Immunol 2020; 83:e13240. [PMID: 32255246 DOI: 10.1111/aji.13240] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/06/2020] [Accepted: 03/06/2020] [Indexed: 12/15/2022] Open
Abstract
PROBLEM Human immunodeficiency virus (HIV) infection is associated with an increased risk of adverse pregnancy outcomes, including preterm birth (PTB), despite viral suppression with antiretroviral therapy. Mucosal-associated invariant T (MAIT) cells are an immune cell subset involved in antimicrobial immunity at mucosal surfaces. MAIT cells have been found at the maternal-foetal interface, and MAIT cells are typically depleted early in HIV infection. We aimed to investigate changes in MAIT cells in relation to maternal HIV/ART status and PTB. METHOD OF STUDY We conducted flow cytometric analysis of peripheral blood samples from 47 HIV-positive (HIV+) and 45 HIV-negative (HIV-) pregnant women enrolled in a prospective pregnancy cohort study in Soweto, South Africa. Frequencies of Vα7.2+ CD161++ MAIT cells and proportions of CD4+ , CD8+ and double-negative MAIT cells were compared between women with and without HIV infection, and between women with and without PTB or spontaneous preterm labour (Sp-PTL). RESULTS Although overall MAIT cell frequencies were the same between HIV+ and HIV- patients, HIV+ patients had a higher proportion of CD8+ MAIT cells in the first two trimesters. Women with PTB and Sp-PTL also had a higher proportion of CD8+ MAIT cells in the first trimester compared to women without these outcomes. The association between changes in MAIT cell subsets and PTB/Sp-PTL was present in both HIV+ and HIV- women, and an additive effect on MAIT cell subsets was seen in women with both HIV infection and PTB. CONCLUSIONS Interactions between HIV-related and pregnancy-related changes in MAIT cell subsets and distribution may lead to imbalances in peripheral MAIT cell subsets in early pregnancy. This may contribute to the increased risk of PTB in HIV+ patients by altering the overall functionality of the peripheral MAIT cell compartment.
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Affiliation(s)
- Krithi Ravi
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Christina Y S Chan
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Charlene Akoto
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Wei Zhang
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Manu Vatish
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Shane A Norris
- South African Medical Research Council Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Paul Klenerman
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK
| | - Joris Hemelaar
- Nuffield Department of Women's & Reproductive Health, University of Oxford, The Women's Centre, John Radcliffe Hospital, Oxford, UK.,South African Medical Research Council Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
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11
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Murugesan A, Ibegbu C, Styles TM, Jones AT, Shanmugasundaram U, Reddy PBJ, Rahman SJ, Saha P, Vijay-Kumar M, Shankar EM, Amara RR, Velu V. Functional MAIT Cells Are Associated With Reduced Simian-Human Immunodeficiency Virus Infection. Front Immunol 2020; 10:3053. [PMID: 32010135 PMCID: PMC6978843 DOI: 10.3389/fimmu.2019.03053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 12/12/2019] [Indexed: 01/01/2023] Open
Abstract
Mucosa-associated invariant T (MAIT) cells are recently characterized as a novel subset of innate-like T cells that recognize microbial metabolites as presented by the MHC-1b-related protein MR1. The significance of MAIT cells in anti-bacterial defense is well-understood but not clear in viral infections such as SIV/HIV infection. Here we studied the phenotype, distribution, and function of MAIT cells and their association with plasma viral levels during chronic SHIV infection in rhesus macaques (RM). Two groups of healthy and chronic SHIV-infected macaques were characterized for MAIT cells in blood and mucosal tissues. Similar to human, we found a significant fraction of macaque T cells co-expressing MAIT cell markers CD161 and TCRVα-7.2 that correlated directly with macaque MR1 tetramer. These cells displayed memory phenotype and expressed high levels of IL-18R, CCR6, CD28, and CD95. During chronic infection, the frequency of MAIT cells are enriched in the blood but unaltered in the rectum; both blood and rectal MAIT cells displayed higher proliferative and cytotoxic phenotype post-SHIV infection. The frequency of MAIT cells in blood and rectum correlated inversely with plasma viral RNA levels and correlated directly with total CD4 T cells. MAIT cells respond to microbial products during chronic SHIV infection and correlated positively with serum immunoreactivity to flagellin levels. Tissue distribution analysis of MAIT cells during chronic infection showed significant enrichment in the non-lymphoid tissues (lung, rectum, and liver) compared to lymphoid tissues (spleen and LN), with higher levels of tissue-resident markers CD69 and CD103. Exogenous in vitro cytokine treatments during chronic SHIV infection revealed that IL-7 is important for the proliferation of MAIT cells, but IL-12 and IL-18 are important for their cytolytic function. Overall our results demonstrated that MAIT cells are enriched in blood but unaltered in the rectum during chronic SHIV infection, which displayed proliferative and functional phenotype that inversely correlated with SHIV plasma viral RNA levels. Treatment such as combined cytokine treatments could be beneficial for enhancing functional MAIT cells during chronic HIV infection in vivo.
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Affiliation(s)
- Amudhan Murugesan
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Chris Ibegbu
- Emory Vaccine Center, Emory University, Atlanta, GA, United States
| | - Tiffany M Styles
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Andrew T Jones
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | | | - Pradeep B J Reddy
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Sadia J Rahman
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Piu Saha
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States
| | - Matam Vijay-Kumar
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States
| | - Esaki Muthu Shankar
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, India
| | - Rama Rao Amara
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Vijayakumar Velu
- Emory Vaccine Center, Emory University, Atlanta, GA, United States.,Department of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
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12
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Godfrey DI, Koay HF, McCluskey J, Gherardin NA. The biology and functional importance of MAIT cells. Nat Immunol 2019; 20:1110-1128. [PMID: 31406380 DOI: 10.1038/s41590-019-0444-8] [Citation(s) in RCA: 304] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/11/2019] [Indexed: 01/25/2023]
Abstract
In recent years, a population of unconventional T cells called 'mucosal-associated invariant T cells' (MAIT cells) has captured the attention of immunologists and clinicians due to their abundance in humans, their involvement in a broad range of infectious and non-infectious diseases and their unusual specificity for microbial riboflavin-derivative antigens presented by the major histocompatibility complex (MHC) class I-like protein MR1. MAIT cells use a limited T cell antigen receptor (TCR) repertoire with public antigen specificities that are conserved across species. They can be activated by TCR-dependent and TCR-independent mechanisms and exhibit rapid, innate-like effector responses. Here we review evidence showing that MAIT cells are a key component of the immune system and discuss their basic biology, development, role in disease and immunotherapeutic potential.
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Affiliation(s)
- Dale I Godfrey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria, Australia.
- Australian Research Council Centre of Excellence for Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria, Australia.
| | - Hui-Fern Koay
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria, Australia
- Australian Research Council Centre of Excellence for Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria, Australia
| | - James McCluskey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria, Australia
| | - Nicholas A Gherardin
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria, Australia
- Australian Research Council Centre of Excellence for Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria, Australia
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13
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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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14
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Immune Profile of Mucosal-Associated Invariant T Cells in Chronic Viral Hepatitis: A Systematic Review and Meta-Analysis. HEPATITIS MONTHLY 2019. [DOI: 10.5812/hepatmon.94377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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15
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Perdomo-Celis F, Feria MG, Taborda NA, Rugeles MT. A Low Frequency of IL-17-Producing CD8 + T-Cells Is Associated With Persistent Immune Activation in People Living With HIV Despite HAART-Induced Viral Suppression. Front Immunol 2018; 9:2502. [PMID: 30420859 PMCID: PMC6215827 DOI: 10.3389/fimmu.2018.02502] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 10/10/2018] [Indexed: 12/15/2022] Open
Abstract
Immune activation is the hallmark of HIV infection, even in patients with highly active anti-retroviral therapy (HAART)-induced viral suppression. A major cause of immune activation during HIV infection is the intestinal microbial translocation as a consequence, among other factors, of the decrease and/or dysfunction of interleukin (IL)-17-producing T-cells, due to their role promoting the integrity of the intestinal barrier. A population of IL-17-producing CD8+ T-cells (Tc17 cells), characterized by the expression of CD161, has been described, but its relation with the persistent immune activation in non-viremic people living with HIV (PLWH) on HAART is unclear. By flow cytometry, we characterized the activation phenotype (evaluated by the expression of HLA-DR and CD38) of circulating CD161-expressing CD8+ T-cells; in addition, we explored the functionality of polyclonally-stimulated Tc17 cells in PLWH under HAART-induced viral suppression, and in healthy individuals. Finally, we determined the association of Tc17 cells with the expression of cellular and soluble activation markers. Circulating CD161-expressing CD8+ T-cells were decreased in PLWH compared with healthy individuals, despite their similar basal activation state. After polyclonal stimulation, IL-17 production was higher in CD8+ T-cells co-expressing HLA-DR and CD38 in healthy individuals. In contrast, although PLWH had a higher frequency of HLA-DR+ CD38+ CD8+ T-cells after stimulation, they had a lower production of IL-17. Interferon (IFN)-γ-producing CD8+ T-cells (Tc1 cells) were increased in PLWH. The low Tc17 cells response was associated with a high expression of CD38 and programmed death 1 protein, high levels of soluble CD14 and the treatment duration. Finally, to explore potential immunomodulatory strategies, the in vitro effect of the anti-inflammatory agent sulfasalazine was assessed on Tc17 cells. Interestingly, a decreased inflammatory environment, death of activated CD8+ T-cells, and an increased frequency of Tc17 cells were observed with sulfasalazine treatment. Thus, our findings suggest that activated CD8+ T-cells have a marked capacity to produce IL-17 in healthy individuals, but not in PLWH, despite HAART. This dysfunction of Tc17 cells is associated with the persistent immune activation observed in these patients, and can be partially restored by anti-inflammatory agents.
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Affiliation(s)
- Federico Perdomo-Celis
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Manuel G Feria
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Natalia A Taborda
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia.,Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de la Salud, Corporación Universitaria Remington, Medellín, Colombia
| | - Maria T Rugeles
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
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16
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Ussher JE, Willberg CB, Klenerman P. MAIT cells and viruses. Immunol Cell Biol 2018; 96:630-641. [PMID: 29350807 PMCID: PMC6055725 DOI: 10.1111/imcb.12008] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/09/2018] [Accepted: 01/09/2018] [Indexed: 12/11/2022]
Abstract
Mucosal associated invariant T cells (MAIT cells) bear a T cell receptor (TCR) that specifically targets microbially derived metabolites. Functionally, they respond to bacteria and yeasts, which possess the riboflavin pathway, essential for production of such metabolites and which are presented on MR1. Viruses cannot generate these ligands, so a priori, they should not be recognized by MAIT cells and indeed this is true when considering recognition through the TCR. However, MAIT cells are distinctive in another respect, since they respond quite sensitively to non‐TCR signals, especially in the form of inflammatory cytokines. Thus, a number of groups have shown that virus infection can be “sensed” by MAIT cells and a functional response invoked. Since MAIT cells are abundant in humans, especially in tissues such as the liver, the question has arisen as to whether this TCR‐independent MAIT cell triggering by viruses plays any role in vivo. In this review, we will discuss the evidence for this phenomenon and some common features which emerge across different recent studies in this area.
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Affiliation(s)
- James E Ussher
- Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Christian B Willberg
- Peter Medawar Building for Pathogen Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK
| | - Paul Klenerman
- Peter Medawar Building for Pathogen Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK.,Translational Gastroenterology Unit, Oxford University Hospitals, Oxford, UK
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17
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Meggyes M, Szanto J, Lajko A, Farkas B, Varnagy A, Tamas P, Hantosi E, Miko E, Szereday L. The possible role of CD8+/Vα7.2+/CD161++ T (MAIT) and CD8+/Vα7.2+/CD161loT (MAIT-like) cells in the pathogenesis of early-onset pre-eclampsia. Am J Reprod Immunol 2017; 79. [DOI: 10.1111/aji.12805] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 11/30/2017] [Indexed: 12/26/2022] Open
Affiliation(s)
- Matyas Meggyes
- Department of Medical Microbiology and Immunology; Clinical Center; University of Pecs; Pecs Hungary
- Janos Szentagothai Research Center; Pecs Hungary
| | - Julia Szanto
- Department of Medical Microbiology and Immunology; Clinical Center; University of Pecs; Pecs Hungary
| | - Adrienn Lajko
- Department of Medical Microbiology and Immunology; Clinical Center; University of Pecs; Pecs Hungary
| | - Balint Farkas
- Department of Obstetrics and Gynecology; Clinical Center; University of Pecs; Pecs Hungary
| | - Akos Varnagy
- Department of Obstetrics and Gynecology; Clinical Center; University of Pecs; Pecs Hungary
| | - Peter Tamas
- Department of Obstetrics and Gynecology; Clinical Center; University of Pecs; Pecs Hungary
| | - Eszter Hantosi
- Department of Obstetrics and Gynecology; Clinical Center; University of Pecs; Pecs Hungary
| | - Eva Miko
- Department of Medical Microbiology and Immunology; Clinical Center; University of Pecs; Pecs Hungary
- Janos Szentagothai Research Center; Pecs Hungary
| | - Laszlo Szereday
- Department of Medical Microbiology and Immunology; Clinical Center; University of Pecs; Pecs Hungary
- Janos Szentagothai Research Center; Pecs Hungary
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