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Koprivica I, Stanisavljević S, Mićanović D, Jevtić B, Stojanović I, Miljković Đ. ILC3: a case of conflicted identity. Front Immunol 2023; 14:1271699. [PMID: 37915588 PMCID: PMC10616800 DOI: 10.3389/fimmu.2023.1271699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/02/2023] [Indexed: 11/03/2023] Open
Abstract
Innate lymphoid cells type 3 (ILC3s) are the first line sentinels at the mucous tissues, where they contribute to the homeostatic immune response in a major way. Also, they have been increasingly appreciated as important modulators of chronic inflammatory and autoimmune responses, both locally and systemically. The proper identification of ILC3 is of utmost importance for meaningful studies on their role in immunity. Flow cytometry is the method of choice for the detection and characterization of ILC3. However, the analysis of ILC3-related papers shows inconsistency in ILC3 phenotypic definition, as different inclusion and exclusion markers are used for their identification. Here, we present these discrepancies in the phenotypic characterization of human and mouse ILC3s. We discuss the pros and cons of using various markers for ILC3 identification. Furthermore, we consider the possibilities for the efficient isolation and propagation of ILC3 from different organs and tissues for in-vitro and in-vivo studies. This paper calls upon uniformity in ILC3 definition, isolation, and propagation for the increased possibility of confluent interpretation of ILC3's role in immunity.
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Affiliation(s)
| | | | | | | | | | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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2
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Pan Y, Du D, Wang L, Wang X, He G, Jiang X. The Role of T Helper 22 Cells in Dermatological Disorders. Front Immunol 2022; 13:911546. [PMID: 35911703 PMCID: PMC9331286 DOI: 10.3389/fimmu.2022.911546] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/14/2022] [Indexed: 11/25/2022] Open
Abstract
T helper 22 (Th22) cells are a newly identified subset of CD4+ T cells that secrete the effector cytokine interleukin 22 (IL-22) upon specific antigen stimulation, barely with IFN-γ or IL-17. Increasing studies have demonstrated that Th22 cells and IL-22 play essential roles in skin barrier defense and skin disease pathogenesis since the IL-22 receptor is widely expressed in the skin, especially in keratinocytes. Herein, we reviewed the characterization, differentiation, and biological activities of Th22 cells and elucidated their roles in skin health and disease. We mainly focused on the intricate crosstalk between Th22 cells and keratinocytes and provided potential therapeutic strategies targeting the Th22/IL-22 signaling pathway.
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Affiliation(s)
- Yu Pan
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Dan Du
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Lian Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoyun Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Gu He
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Gu He, ; Xian Jiang,
| | - Xian Jiang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Gu He, ; Xian Jiang,
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3
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Sharifinejad N, Zaki-Dizaji M, Sepahvandi R, Fayyaz F, Dos Santos Vilela MM, ElGhazali G, Abolhassani H, Ochs HD, Azizi G. The clinical, molecular, and therapeutic features of patients with IL10/IL10R deficiency: a systematic review. Clin Exp Immunol 2022; 208:281-291. [PMID: 35481870 PMCID: PMC9226142 DOI: 10.1093/cei/uxac040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 01/19/2023] Open
Abstract
Interleukin10 (IL10) and IL10 receptor (IL10R) deficiencies are monogenic inborn errors of immunity (IEI) causing early-onset inflammatory bowel diseases (IBD). In this report, we systematically reviewed articles that included related keywords using PubMed, Web of Science, and Scopus databases. The articles were screened for eligibility criteria before data extraction. We assessed 286 patients (44.5% female) with IL10 and/or IL10R deficiencies who were predominantly from China (40.7%), Italy (13.9%), and South Korea (8.5%). The median age of onset was 1.0 (0.3-4.0) months with a median age of genetic diagnosis at 16.0 (7.4-81.0) months. Consanguinity was reported in all evaluable patients with IL10 deficiency and in 38.2% of patients with IL10R deficiency (22.9% of patients with IL10RA, and 79.4% of patients with IL10RB deficiency). The most prevalent mutations in IL10RA were c.301C>T (p.R101W) and c.537G>A (p.T179T), those in IL10RB were c.139A>G (p.K47E) and c.611G>A (p.W204X). Auto-inflammation and enteropathy were present in all cases. The first presentation of both groups was protracted diarrhea (45.7%), bloody diarrhea (17.8%), and colitis (15.5%). Patients with IL10R deficiency had a high frequency of dermatologic manifestations (50.5%) and failure to thrive (60.5%), while IL10-deficient patients lacked those complications. In the majority of patients, the basic immunologic parameters were in normal ranges. Of the entire publications, 30.7% underwent hemopoietic stem cell transplantation, 57.5% surgery, and 86.6% immunosuppressive treatment. The 10-year survival rate was higher in patients with IL10 deficiency than in patients with IL10R deficiency. In conclusion, IL10/IL10R deficiency predominantly presents with treatment-resistant, early-onset IBD within the first months of life. We detected no clear correlation between the phenotype of patients carrying the same variant. The high prevalence of distinct clinical manifestations reported in IL10RA- and IL10RB-deficient patients might be attributable to the interactions between the target tissue and cytokines other than IL10 capable of binding to IL10RB. These results gain translational significance by contributing to earlier diagnosis, adequate therapy, and avoiding delay in the diagnosis and unfavorable outcomes.
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Affiliation(s)
- Niusha Sharifinejad
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Majid Zaki-Dizaji
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Roya Sepahvandi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Farimah Fayyaz
- Student Research Committee, Alborz University of Medical Sciences, Karaj, Iran.,Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Maria Marluce Dos Santos Vilela
- Center for Investigation in Pediatrics, Pediatrics Department, Faculty of Medical Sciences, State University of Campinas (UNICAMP). Campinas, SP, Brazil
| | - Gehad ElGhazali
- Department of Clinical Microbiology and Immunology, Sheikh Khalifa Medical City, Abu Dhabi, UAE
| | - Hassan Abolhassani
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hans D Ochs
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA.,Seattle Children's Research Institute, Seattle, WA, USA
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
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Serafini N, Jarade A, Surace L, Goncalves P, Sismeiro O, Varet H, Legendre R, Coppee JY, Disson O, Durum SK, Frankel G, Di Santo JP. Trained ILC3 responses promote intestinal defense. Science 2022; 375:859-863. [PMID: 35201883 PMCID: PMC10351749 DOI: 10.1126/science.aaz8777] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Group 3 innate lymphoid cells (ILC3s) are innate immune effectors that contribute to host defense. Whether ILC3 functions are stably modified after pathogen encounter is unknown. Here, we assess the impact of a time-restricted enterobacterial challenge to long-term ILC3 activation in mice. We found that intestinal ILC3s persist for months in an activated state after exposure to Citrobacter rodentium. Upon rechallenge, these "trained" ILC3s proliferate, display enhanced interleukin-22 (IL-22) responses, and have a superior capacity to control infection compared with naïve ILC3s. Metabolic changes occur in C. rodentium-exposed ILC3s, but only trained ILC3s have an enhanced proliferative capacity that contributes to increased IL-22 production. Accordingly, a limited encounter with a pathogen can promote durable phenotypic and functional changes in intestinal ILC3s that contribute to long-term mucosal defense.
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Affiliation(s)
- Nicolas Serafini
- Institut Pasteur, Université de Paris, Inserm U1223, Innate Immunity Unit, Paris, France
| | - Angélique Jarade
- Institut Pasteur, Université de Paris, Inserm U1223, Innate Immunity Unit, Paris, France
| | - Laura Surace
- Institut Pasteur, Université de Paris, Inserm U1223, Innate Immunity Unit, Paris, France
| | - Pedro Goncalves
- Institut Pasteur, Université de Paris, Inserm U1223, Innate Immunity Unit, Paris, France
| | - Odile Sismeiro
- Institut Pasteur, Université de Paris, Transcriptome and Epigenome Platform-Biomics Pole, Paris, France
| | - Hugo Varet
- Institut Pasteur, Université de Paris, Transcriptome and Epigenome Platform-Biomics Pole, Paris, France
- Institut Pasteur, Université de Paris, Bioinformatics and Biostatistics Hub, Paris, France
| | - Rachel Legendre
- Institut Pasteur, Université de Paris, Transcriptome and Epigenome Platform-Biomics Pole, Paris, France
- Institut Pasteur, Université de Paris, Bioinformatics and Biostatistics Hub, Paris, France
| | - Jean-Yves Coppee
- Institut Pasteur, Université de Paris, Transcriptome and Epigenome Platform-Biomics Pole, Paris, France
| | - Olivier Disson
- Institut Pasteur, Université de Paris, Inserm U1117, Biology of Infection Unit, Paris, France
| | - Scott K Durum
- Laboratory of Cancer and Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Gad Frankel
- MRC Centre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College London, London, UK
| | - James P Di Santo
- Institut Pasteur, Université de Paris, Inserm U1223, Innate Immunity Unit, Paris, France
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5
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Mukherjee N, Ji N, Tan X, Lin C, Rios E, Chen C, Huang T, Svatek RS. Bladder tumor ILC1s undergo Th17-like differentiation in human bladder cancer. Cancer Med 2021; 10:7101-7110. [PMID: 34496133 PMCID: PMC8525153 DOI: 10.1002/cam4.4243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Human innate lymphoid cells (hILCs) are lineage-negative immune cells that do not express rearranged adaptive antigen receptors. Natural killer (NK) cells are hILCs that contribute to cancer defense. The role of non-NK hILCs in cancer is unclear. Our study aimed to characterize non-NK hILCs in bladder cancer. EXPERIMENTAL DESIGN Mass cytometry was used to characterize intratumoral non-NK hILCs based on 35 parameters, including receptors, cytokines, and transcription factors from 21 muscle-invasive bladder tumors. Model-based clustering was performed on t-distributed stochastic neighbor embedding (t-SNE) coordinates of hILCs, and the association of hILCs with tumor stage was analyzed. RESULTS Most frequent among intratumoral non-NK hILCs were hILC1s, which were increased in higher compared with lower stage tumors. Intratumoral hILC1s were marked by Th17-like phenotype with high RORγt, IL-17, and IL-22 compared to Th1 differentiation markers, including Tbet, perforin, and IFN-γ. Compared with intratumoral hILC2s and hILC3s, hILC1s also had lower expression of activation markers (NKp30, NKp46, and CD69) and increased expression of exhaustion molecules (PD-1 and Tim3). Unsupervised clustering identified nine clusters of bladder hILCs, which were not defined by the primary hILC subtypes 1-3. hILC1s featured in all the nine clusters indicating that intratumoral hILC1s displayed the highest phenotypic heterogeneity among all hILCs. CONCLUSIONS hILC1s are increased in higher stage tumors among patients with muscle-invasive bladder cancer. These intratumoral hILC1s exhibit an exhausted phenotype and Th17-like differentiation, identifying them as potential targets for immunotherapy.
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Affiliation(s)
- Neelam Mukherjee
- Department of UrologyUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Niannian Ji
- Department of UrologyUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Xi Tan
- Department of Molecular MedicineUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Chun‐Lin Lin
- Department of Molecular MedicineUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Emily Rios
- Department of UrologyUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Chun‐Liang Chen
- Department of Molecular MedicineUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Tim Huang
- Department of Molecular MedicineUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
| | - Robert S. Svatek
- Department of UrologyUniversity of Texas Health San Antonio (UTHSA)San AntonioTexasUSA
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6
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Roy U, de Oliveira RS, Galvez EJC, Gronow A, Basic M, Perez LG, Gagliani N, Bleich A, Huber S, Strowig T. Induction of IL-22-Producing CD4+ T Cells by Segmented Filamentous Bacteria Independent of Classical Th17 Cells. Front Immunol 2021; 12:671331. [PMID: 34566952 PMCID: PMC8456099 DOI: 10.3389/fimmu.2021.671331] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 08/11/2021] [Indexed: 01/13/2023] Open
Abstract
The intestinal microbiota modulates IL-22 production in the intestine, including the induction of IL-22-producing CD4+ T helper cells. Which specific bacteria are responsible for the induction of these cells is less well understood. Here, we demonstrate through the use of novel gnotobiotic knock-in reporter mice that segmented filamentous bacteria (SFB), which are known for their ability to induce Th17 cells, also induce distinct IL-17A negative CD4+ T cell populations in the intestine. A subset of these cells instead produces IL-22 upon restimulation ex vivo and also during enteric infections. Furthermore, they produce a distinct set of cytokines compared to Th17 cells including the differential expression of IL-17F and IFN-γ. Importantly, genetic models demonstrate that these cells, presumably Th22 cells, develop independently of intestinal Th17 cells. Together, our data identifies that besides Th17, SFB also induces CD4+ T cell populations, which serve as immediate source of IL-22 during intestinal inflammation.
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Affiliation(s)
- Urmi Roy
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Rômulo S. de Oliveira
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Eric J. C. Galvez
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Achim Gronow
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Laura Garcia Perez
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Nicola Gagliani
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andre Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Samuel Huber
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Till Strowig
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
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7
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Barnes JL, Plank MW, Asquith K, Maltby S, Sabino LR, Kaiko GE, Lochrin A, Horvat JC, Mayall JR, Kim RY, Hansbro PM, Keely S, Belz GT, Tay HL, Foster PS. T-helper 22 cells develop as a distinct lineage from Th17 cells during bacterial infection and phenotypic stability is regulated by T-bet. Mucosal Immunol 2021; 14:1077-1087. [PMID: 34083747 DOI: 10.1038/s41385-021-00414-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 04/03/2021] [Accepted: 05/04/2021] [Indexed: 02/04/2023]
Abstract
CD4+ T-helper 22 (Th22) cells are a phenotypically distinct lymphocyte subset that produces high levels of interleukin (IL)-22 without co-production of IL-17A. However, the developmental origin and lineage classification of Th22 cells, their interrelationship to Th17 cells, and potential for plasticity at sites of infection and inflammation remain largely undefined. An improved understanding of the mechanisms underpinning the outgrowth of Th22 cells will provide insights into their regulation during homeostasis, infection, and disease. To address this knowledge gap we generated 'IL-17A-fate-mapping IL-17A/IL-22 reporter transgenic mice' and show that Th22 cells develop in the gastrointestinal tract and lung during bacterial infection without transitioning via an Il17a-expressing intermediate, although in some compartments alternative transition pathways exist. Th22-cell development was not dependent on T-bet; however, this transcription factor functioned as a promiscuous T-cell-intrinsic regulator of IL-17A and IL-22 production, in addition to regulating the outgrowth, phenotypic stability, and plasticity of Th22 cells. Thus, we demonstrate that at sites of mucosal bacterial infection Th22 cells develop as a distinct lineage independently of Th17 cells; though both lineages exhibit bidirectional phenotypic flexibility within infected tissues and their draining lymph nodes, and that T-bet plays a critical regulatory role in Th22-cell function and identity.
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Affiliation(s)
- Jessica L Barnes
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia.
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.
| | - Maximilian W Plank
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Medical Directorate, GSK, Abbotsford, VIC, Australia
| | - Kelly Asquith
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Steven Maltby
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Lorena R Sabino
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Gerard E Kaiko
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Alyssa Lochrin
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Jemma R Mayall
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Richard Y Kim
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Centre for Inflammation, Centenary Institute, Camperdown, NSW, Australia
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Centre for Inflammation, Centenary Institute, Camperdown, NSW, Australia
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Simon Keely
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Priority Research Centre for Digestive Health and Neurogastroenterology, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
| | - Gabrielle T Belz
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC, Australia
- The University of Queensland Diamantina Institute, University of Queensland, Woolloongabba, QLD, Australia
| | - Hock L Tay
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Paul S Foster
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Callaghan, NSW, Australia.
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.
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8
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Lucchesi D, Coleby R, Pontarini E, Prediletto E, Rivellese F, Hill DG, Derrac Soria A, Jones SA, Humphreys IR, Sutcliffe N, Tappuni AR, Pitzalis C, Jones GW, Bombardieri M. Impaired Interleukin-27-Mediated Control of CD4+ T Cell Function Impact on Ectopic Lymphoid Structure Formation in Patients With Sjögren's Syndrome. Arthritis Rheumatol 2020; 72:1559-1570. [PMID: 32307922 DOI: 10.1002/art.41289] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 04/14/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Ectopic lymphoid structures (ELS) develop at sites of infection, autoimmunity, and cancer. In patients with Sjögren's syndrome (SS), ELS support autoreactive B cell activation and lymphomagenesis. Interleukin-27 (IL-27) is a key regulator of adaptive immunity and limits Th17 cell-driven pathology. We undertook this study to elucidate the role of IL-27 in ELS formation and function in autoimmunity using a murine model of sialadenitis and in patients with SS. METHODS ELS formation was induced in wild-type and Il27ra-/- mice via salivary gland (SG) cannulation of a replication-deficient adenovirus in the presence or absence of IL-17A neutralization. In SG biopsy samples, IL-27-producing cells were identified by multicolor immunofluorescence microscopy. Lesional and circulating IL-27 levels were determined by gene expression and enzyme-linked immunosorbent assay. The in vitro effect of IL-27 on T cells was assessed using fluorescence-activated cell sorting and cytokine release. RESULTS In experimental sialadenitis, Il27ra-/- mice had larger and more hyperactive ELS (focus score; P < 0.001), increased autoimmunity, and an expanded Th17 response (P < 0.001), compared to wild-type mice. IL-17 blockade in Il27ra-/- mice suppressed the aberrant ELS response (B and T cell reduction against control; P < 0.01). SS patients displayed increased circulating IL-27 levels (P < 0.01), and in SG biopsy samples, IL-27 was expressed by DC-LAMP+ dendritic cells in association with CD3+ T cells. Remarkably, in SS T cells (but not in T cells from patients with rheumatoid arthritis or healthy controls), IL-27-mediated suppression of IL-17 secretion was severely impaired and associated with an aberrant interferon-γ release upon IL-27 stimulation. CONCLUSION Our data indicate that the physiologic ability of IL-27 to limit the magnitude and function of ELS through control of Th17 cell expansion is severely impaired in SS patients, highlighting a defective immunoregulatory checkpoint in this condition.
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Affiliation(s)
| | | | | | | | | | - David G Hill
- Cardiff University, Cardiff, UK, and University of Bristol, Bristol, UK
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9
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Aggor FEY, Break TJ, Trevejo-Nuñez G, Whibley N, Coleman BM, Bailey RD, Kaplan DH, Naglik JR, Shan W, Shetty AC, McCracken C, Durum SK, Biswas PS, Bruno VM, Kolls JK, Lionakis MS, Gaffen SL. Oral epithelial IL-22/STAT3 signaling licenses IL-17-mediated immunity to oral mucosal candidiasis. Sci Immunol 2020; 5:eaba0570. [PMID: 32503875 PMCID: PMC7340112 DOI: 10.1126/sciimmunol.aba0570] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/07/2020] [Indexed: 12/29/2022]
Abstract
Oropharyngeal candidiasis (OPC; thrush) is an opportunistic infection caused by the commensal fungus Candida albicans Interleukin-17 (IL-17) and IL-22 are cytokines produced by type 17 lymphocytes. Both cytokines mediate antifungal immunity yet activate quite distinct downstream signaling pathways. While much is now understood about how IL-17 promotes immunity in OPC, the activities of IL-22 are far less well delineated. We show that, despite having similar requirements for induction from type 17 cells, IL-22 and IL-17 function nonredundantly during OPC. We find that the IL-22 and IL-17 receptors are required in anatomically distinct locations within the oral mucosa; loss of IL-22RA1 or signal transducer and activator of transcription 3 (STAT3) in the oral basal epithelial layer (BEL) causes susceptibility to OPC, whereas IL-17RA is needed in the suprabasal epithelial layer (SEL). Transcriptional profiling of the tongue linked IL-22/STAT3 not only to oral epithelial cell proliferation and survival but also, unexpectedly, to driving an IL-17-specific gene signature. We show that IL-22 mediates regenerative signals on the BEL that replenish the IL-17RA-expressing SEL, thereby restoring the ability of the oral epithelium to respond to IL-17 and thus to mediate antifungal events. Consequently, IL-22 signaling in BEL "licenses" IL-17 signaling in the oral mucosa, revealing spatially distinct yet cooperative activities of IL-22 and IL-17 in oral candidiasis.
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Affiliation(s)
- Felix E Y Aggor
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Timothy J Break
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD, USA
| | | | - Natasha Whibley
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Bianca M Coleman
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Rachel D Bailey
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Daniel H Kaplan
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Julian R Naglik
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
| | - Wei Shan
- Cytokines and Immunity Section, Cancer and Inflammation Program, National Cancer Institute, NIH, Frederick, MD, USA
| | - Amol C Shetty
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Carrie McCracken
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Scott K Durum
- Cytokines and Immunity Section, Cancer and Inflammation Program, National Cancer Institute, NIH, Frederick, MD, USA
| | - Partha S Biswas
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Vincent M Bruno
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jay K Kolls
- Center for Translational Research in Infection and Inflammation, Tulane University, New Orleans, LA, USA
| | - Michail S Lionakis
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD, USA
| | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA.
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10
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Ebihara T. Dichotomous Regulation of Acquired Immunity by Innate Lymphoid Cells. Cells 2020; 9:cells9051193. [PMID: 32403291 PMCID: PMC7290502 DOI: 10.3390/cells9051193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/04/2020] [Accepted: 05/08/2020] [Indexed: 12/12/2022] Open
Abstract
The concept of innate lymphoid cells (ILCs) includes both conventional natural killer (NK) cells and helper ILCs, which resemble CD8+ killer T cells and CD4+ helper T cells in acquired immunity, respectively. Conventional NK cells are migratory cytotoxic cells that find tumor cells or cells infected with microbes. Helper ILCs are localized at peripheral tissue and are responsible for innate helper-cytokine production. Helper ILCs are classified into three subpopulations: TH1-like ILC1s, TH2-like ILC2s, and TH17/TH22-like ILC3s. Because of the functional similarities between ILCs and T cells, ILCs can serve as an innate component that augments each corresponding type of acquired immunity. However, the physiological functions of ILCs are more plastic and complicated than expected and are affected by environmental cues and types of inflammation. Here, we review recent advances in understanding the interaction between ILCs and acquired immunity, including T- and B-cell responses at various conditions. Immune suppressive activities by ILCs in particular are discussed in comparison to their immune stimulatory effects to gain precise knowledge of ILC biology and the physiological relevance of ILCs in human diseases.
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Affiliation(s)
- Takashi Ebihara
- Department of Medical Biology, Akita University Graduate School of Medicine Affiliation, 1-1-1 Hondo, Akita 010-8543, Japan
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11
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Brasseit J, Kwong Chung CKC, Noti M, Zysset D, Hoheisel-Dickgreber N, Genitsch V, Corazza N, Mueller C. Divergent Roles of Interferon-γ and Innate Lymphoid Cells in Innate and Adaptive Immune Cell-Mediated Intestinal Inflammation. Front Immunol 2018; 9:23. [PMID: 29416538 PMCID: PMC5787534 DOI: 10.3389/fimmu.2018.00023] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/04/2018] [Indexed: 12/20/2022] Open
Abstract
Aberrant interferon gamma (IFNγ) expression is associated with the pathogenesis of numerous autoimmune- and inflammatory disorders, including inflammatory bowel diseases (IBD). However, the requirement of IFNγ for the pathogenesis of chronic intestinal inflammation remains controversial. The aim of this study was thus to investigate the role of IFNγ in experimental mouse models of innate and adaptive immune cell-mediated intestinal inflammation using genetically and microbiota-stabilized hosts. While we find that IFNγ drives acute intestinal inflammation in the anti-CD40 colitis model in an innate lymphoid cell (ILC)-dependent manner, IFNγ secreted by both transferred CD4 T cells and/or cells of the lymphopenic Rag1-/- recipient mice was dispensable for CD4 T cell-mediated colitis. In the absence of IFNγ, intestinal inflammation in CD4 T cell recipient mice was associated with enhanced IL17 responses; consequently, targeting IL17 signaling in IFNγ-deficient mice reduced T cell-mediated colitis. Intriguingly, in contrast to the anti-CD40 model of colitis, depletion of ILC in the Rag1-/- recipients of colitogenic CD4 T cells did not prevent induction of colonic inflammation. Together, our findings demonstrate that IFNγ represents an essential, or a redundant, pro-inflammatory cytokine for the induction of intestinal inflammation, depending on the experimental mouse model used and on the nature of the critical disease inducing immune cell populations involved.
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Affiliation(s)
- Jennifer Brasseit
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Cheong K. C. Kwong Chung
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Mario Noti
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Daniel Zysset
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Nina Hoheisel-Dickgreber
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Vera Genitsch
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Nadia Corazza
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - Christoph Mueller
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
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12
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Savage AK, Liang HE, Locksley RM. The Development of Steady-State Activation Hubs between Adult LTi ILC3s and Primed Macrophages in Small Intestine. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 199:1912-1922. [PMID: 28747343 PMCID: PMC5568484 DOI: 10.4049/jimmunol.1700155] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 07/03/2017] [Indexed: 12/21/2022]
Abstract
Group 3 innate lymphoid cells (ILC3s) are important for intestinal health, particularly in controlling inflammation in response to epithelial dysregulation, but their role during homeostasis remains less well understood. We generated IL-22 reporter mice to assess production of this key cytokine by ILC3s in the small intestine during development and under basal conditions. Although IL-22 is produced by a variety of lymphocyte populations, constitutively high IL-22 expression was limited to lymphoid-tissue inducer (LTi) cells residing in lymph node-like structures in the gut called solitary intestinal lymphoid tissues (SILT). Constitutive IL-22 expression was dependent on the microbiota and MyD88 signaling, appeared upon weaning, and was present across the spectrum of SILT, including in cryptopatches. Activated SILT LTi cells colocalized with a rare subpopulation of activated macrophages constitutively positive for IL-12/23 p40 and capable of activating neonatal LTi cells in response to TLR stimulus. Thus, weaning leads to the organization of innate immune activation hubs at SILT that mature and are continuously sustained by signals from the microbiota. This functional and anatomic organization constitutes a significant portion of the steady-state IL-23/IL-22 axis.
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Affiliation(s)
- Adam K Savage
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158
| | - Hong-Erh Liang
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143; and
| | - Richard M Locksley
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158;
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143; and
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115
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13
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Plank MW, Kaiko GE, Maltby S, Weaver J, Tay HL, Shen W, Wilson MS, Durum SK, Foster PS. Th22 Cells Form a Distinct Th Lineage from Th17 Cells In Vitro with Unique Transcriptional Properties and Tbet-Dependent Th1 Plasticity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 198:2182-2190. [PMID: 28100680 PMCID: PMC5367520 DOI: 10.4049/jimmunol.1601480] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 12/20/2016] [Indexed: 12/14/2022]
Abstract
Th22 cells are a major source of IL-22 and have been found at sites of infection and in a range of inflammatory diseases. However, their molecular characteristics and functional roles remain largely unknown because of our inability to generate and isolate pure populations. We developed a novel Th22 differentiation assay and generated dual IL-22/IL-17A reporter mice to isolate and compare pure populations of cultured Th22 and Th17 cells. Il17a fate-mapping and transcriptional profiling provide evidence that these Th22 cells have never expressed IL-17A, suggesting that they are potentially a distinct cell lineage from Th17 cells under in vitro culture conditions. Interestingly, Th22 cells also expressed granzymes, IL-13, and increased levels of Tbet. Using transcription factor-deficient cells, we demonstrate that RORγt and Tbet act as positive and negative regulators of Th22 differentiation, respectively. Furthermore, under Th1 culture conditions in vitro, as well as in an IFN-γ-rich inflammatory environment in vivo, Th22 cells displayed marked plasticity toward IFN-γ production. Th22 cells also displayed plasticity under Th2 conditions in vitro by upregulating IL-13 expression. Our work has identified conditions to generate and characterize Th22 cells in vitro. Further, it provides evidence that Th22 cells develop independently of the Th17 lineage, while demonstrating plasticity toward both Th1- and Th2-type cells.
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Affiliation(s)
- Maximilian W Plank
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia
| | - Gerard E Kaiko
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia
| | - Steven Maltby
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia
| | - Jessica Weaver
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia
| | - Hock L Tay
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia
| | - Wei Shen
- Laboratory of Immunoregulation, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702; and
| | - Mark S Wilson
- Division of Molecular Immunology, The Francis Crick Institute, London NW1 1AT, United Kingdom
| | - Scott K Durum
- Laboratory of Immunoregulation, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702; and
| | - Paul S Foster
- Priority Research Centre for Healthy Lungs, Department of Microbiology and Immunology, School of Pharmacy and Biomedical Sciences, Faculty of Health and Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales 2308, Australia;
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14
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Shen W, Li W, Hixon JA, Andrews C, Durum SK. Visualization of IL-22-expressing Lymphocytes Using Reporter Mice. J Vis Exp 2017:54710. [PMID: 28190033 PMCID: PMC5352292 DOI: 10.3791/54710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Reporter mice have been widely used to observe the localization of expression of targeted genes. This protocol focuses on a strategy to establish a new transgenic reporter mouse model. We chose to visualize interleukin (IL) 22 gene expression because this cytokine has important activities in the intestine, where it contributes to repair tissues damaged by inflammation. Reporter systems offer considerable advantages over other methods of identifying products in vivo. In the case of IL-22, other studies had first isolated cells from tissues and then re-stimulated the cells in vitro. IL-22, which is normally secreted, was trapped inside cells using a drug, and intracellular staining was used to visualize it. This method identifies cells capable of producing IL-22, but it does not determine whether they were doing so in vivo. The reporter design includes inserting a gene for a fluorescent protein (tdTomato) into the IL-22 gene in such a way that the fluorescent protein cannot be secreted and therefore remains trapped inside the producing cells in vivo. Fluorescent producers can then be visualized in tissue sections or by ex vivo analysis through flow cytometry. The actual construction process for the reporter included recombineering a bacterial artificial chromosome that contained the IL-22 gene. This engineered chromosome was then introduced into the mouse genome. Homeostatic IL-22 reporter expression was observed in different mouse tissues, including the spleen, thymus, lymph nodes, Peyer's patch, and intestine, by flow cytometry analysis. Colitis was induced by T-cell (CD4+CD45RBhigh) transfer, and reporter expression was visualized. Positive T cells were first present in the mesenteric lymph nodes, and then they accumulated inside the lamina propria of the distal small intestine and colon tissues. The strategy using BACs gave good-fidelity reporter expression compared to IL-22 expression, and it is simpler than knock-in procedures.
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Affiliation(s)
- Wei Shen
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Wenqing Li
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Julie A Hixon
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Caroline Andrews
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Scott K Durum
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health;
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15
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Gimeno Brias S, Stack G, Stacey MA, Redwood AJ, Humphreys IR. The Role of IL-22 in Viral Infections: Paradigms and Paradoxes. Front Immunol 2016; 7:211. [PMID: 27303405 PMCID: PMC4885595 DOI: 10.3389/fimmu.2016.00211] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 05/17/2016] [Indexed: 12/12/2022] Open
Abstract
Interleukin-22 (IL-22) is a member of the IL-10 family of cytokines. Hematopoietic cells express IL-22, and this cytokine signals through the heterodimeric IL-22 receptor expressed by non-hematopoietic cells. A growing body of evidence points toward a role for IL-22 in a diverse array of biological functions ranging from cellular proliferation, tissue protection and regeneration, and inflammation. In recent years, the role that IL-22 plays in antiviral immune responses has been examined in a number of infection models. Herein, we assess our current understanding of how IL-22 determines the outcome of viral infections and define common mechanisms that are evident from, sometimes paradoxical, findings derived from these studies. Finally, we discuss the potential therapeutic utility of IL-22 manipulation in the treatment and prevention of viral infections and associated pathologies.
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Affiliation(s)
- Silvia Gimeno Brias
- Institute of Infection and Immunity, Cardiff University, Cardiff, UK; Systems Immunity University Research Institute, Cardiff University, Cardiff, UK
| | - Gabrielle Stack
- Institute of Infection and Immunity, Cardiff University, Cardiff, UK; Systems Immunity University Research Institute, Cardiff University, Cardiff, UK
| | - Maria A Stacey
- Institute of Infection and Immunity, Cardiff University, Cardiff, UK; Systems Immunity University Research Institute, Cardiff University, Cardiff, UK
| | - Alec J Redwood
- The Institute for Immunology and Infectious Diseases, Murdoch University , Murdoch, WA , Australia
| | - Ian R Humphreys
- Institute of Infection and Immunity, Cardiff University, Cardiff, UK; Systems Immunity University Research Institute, Cardiff University, Cardiff, UK
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