1
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Torres SV, Man K, Elmzzahi T, Malko D, Chisanga D, Liao Y, Prout M, Abbott CA, Tang A, Wu J, Becker M, Mason T, Haynes V, Tsui C, Shakiba MH, Hamada D, Britt K, Groom JR, McColl SR, Shi W, Watt MJ, Le Gros G, Pal B, Beyer M, Vasanthakumar A, Kallies A. Two regulatory T cell populations in the visceral adipose tissue shape systemic metabolism. Nat Immunol 2024; 25:496-511. [PMID: 38356058 DOI: 10.1038/s41590-024-01753-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
Visceral adipose tissue (VAT) is an energy store and endocrine organ critical for metabolic homeostasis. Regulatory T (Treg) cells restrain inflammation to preserve VAT homeostasis and glucose tolerance. Here, we show that the VAT harbors two distinct Treg cell populations: prototypical serum stimulation 2-positive (ST2+) Treg cells that are enriched in males and a previously uncharacterized population of C-X-C motif chemokine receptor 3-positive (CXCR3+) Treg cells that are enriched in females. We show that the transcription factors GATA-binding protein 3 and peroxisome proliferator-activated receptor-γ, together with the cytokine interleukin-33, promote the differentiation of ST2+ VAT Treg cells but repress CXCR3+ Treg cells. Conversely, the differentiation of CXCR3+ Treg cells is mediated by the cytokine interferon-γ and the transcription factor T-bet, which also antagonize ST2+ Treg cells. Finally, we demonstrate that ST2+ Treg cells preserve glucose homeostasis, whereas CXCR3+ Treg cells restrain inflammation in lean VAT and prevent glucose intolerance under high-fat diet conditions. Overall, this study defines two molecularly and developmentally distinct VAT Treg cell types with unique context- and sex-specific functions.
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Affiliation(s)
- Santiago Valle Torres
- Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
| | - Kevin Man
- Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
| | - Tarek Elmzzahi
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
- Immunogenomics and Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Darya Malko
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
- Immunogenomics and Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - David Chisanga
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- La Trobe University, Bundoora, Victoria, Australia
| | - Yang Liao
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- La Trobe University, Bundoora, Victoria, Australia
| | - Melanie Prout
- The Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Caitlin A Abbott
- Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia, Australia
| | - Adelynn Tang
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
| | - Jian Wu
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- La Trobe University, Bundoora, Victoria, Australia
| | - Matthias Becker
- Immunogenomics and Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Modular HPC and AI, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Teisha Mason
- Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
| | - Vanessa Haynes
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Victoria, Australia
| | - Carlson Tsui
- Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia
| | | | - Doaa Hamada
- Immunogenomics and Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Medical Microbiology and Immunology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Kara Britt
- Breast Cancer Risk and Prevention, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Joanna R Groom
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Shaun R McColl
- Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia, Australia
| | - Wei Shi
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- La Trobe University, Bundoora, Victoria, Australia
| | - Matthew J Watt
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Victoria, Australia
| | - Graham Le Gros
- The Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Bhupinder Pal
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- La Trobe University, Bundoora, Victoria, Australia
| | - Marc Beyer
- Immunogenomics and Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Platform for Single Cell Genomics and Epigenomics (PRECISE), German Center for Neurodegenerative Diseases (DZNE), University of Bonn, Bonn, Germany
| | - Ajithkumar Vasanthakumar
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia.
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.
- La Trobe University, Bundoora, Victoria, Australia.
| | - Axel Kallies
- Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria, Australia.
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
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2
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Tearle JLE, Tang A, Vasanthakumar A, James KR. Role reversals: non-canonical roles for immune and non-immune cells in the gut. Mucosal Immunol 2024; 17:137-146. [PMID: 37967720 DOI: 10.1016/j.mucimm.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/07/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023]
Abstract
The intestine is home to an intertwined network of epithelial, immune, and neuronal cells as well as the microbiome, with implications for immunity, systemic metabolism, and behavior. While the complexity of this microenvironment has long since been acknowledged, recent technological advances have propelled our understanding to an unprecedented level. Notably, the microbiota and non-immune or structural cells have emerged as important conductors of intestinal immunity, and by contrast, cells of both the innate and adaptive immune systems have demonstrated non-canonical roles in tissue repair and metabolism. This review highlights recent works in the following two streams: non-immune cells of the intestine performing immunological functions; and traditional immune cells exhibiting non-immune functions in the gut.
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Affiliation(s)
- Jacqueline L E Tearle
- Garvan Institute of Medical Research, Darlinghurst, Australia; School of Biomedical Sciences, University of New South Wales, Australia
| | - Adelynn Tang
- Olivia Newton-John Cancer Research Institute, Heidelberg, Australia; School of Cancer Medicine, La Trobe University, Bundoora, Australia; Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Ajithkumar Vasanthakumar
- Olivia Newton-John Cancer Research Institute, Heidelberg, Australia; School of Cancer Medicine, La Trobe University, Bundoora, Australia; Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia.
| | - Kylie R James
- Garvan Institute of Medical Research, Darlinghurst, Australia; School of Biomedical Sciences, University of New South Wales, Australia.
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3
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Andrews MC, Vasanthakumar A. Gut microbiota - a double-edged sword in cancer immunotherapy. Trends Cancer 2023; 9:3-5. [PMID: 36088249 DOI: 10.1016/j.trecan.2022.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 12/31/2022]
Abstract
Immune checkpoint blockade (ICB) has revolutionized cancer treatment. However, many patients fail to respond to this therapy or experience side effects. Recently, gut microbiota have emerged as a key determinant of ICB efficacy and toxicity, making manipulation of the microbiome a novel therapeutic strategy with which to improve ICB outcomes.
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Affiliation(s)
- Miles C Andrews
- Department of Medicine - Alfred, Monash University, Melbourne, Victoria, Australia.
| | - Ajithkumar Vasanthakumar
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia; La Trobe University, Bundoora, Victoria, Australia.
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4
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Hussain T, Kallies A, Vasanthakumar A. Sex-bias in CD8 + T-cell stemness and exhaustion in cancer. Clin Transl Immunology 2022; 11:e1414. [PMID: 36051310 PMCID: PMC9418121 DOI: 10.1002/cti2.1414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 11/09/2022] Open
Abstract
This commentary article highlights two recently published studies, which for the first time revealed the immunological underpinnings of sex-bias in cancer incidence and mortality. These studies showed that the androgen receptor restrains anti-tumour immunity in males by repressing cytotoxic genes in CD8+ T cells.
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Affiliation(s)
- Tabinda Hussain
- Olivia Newton-John Cancer Research Institute Heidelberg VIC Australia.,La Trobe University Bundoora VIC Australia
| | - Axel Kallies
- Department of Microbiology and Immunology University of Melbourne Melbourne VIC Australia.,Peter Doherty Institute for Infection and Immunity Melbourne VIC Australia
| | - Ajithkumar Vasanthakumar
- Olivia Newton-John Cancer Research Institute Heidelberg VIC Australia.,La Trobe University Bundoora VIC Australia.,Department of Microbiology and Immunology University of Melbourne Melbourne VIC Australia
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5
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Sefik E, Hori S, Vasanthakumar A. Editorial: Regulatory T Cell Heterogeneity: Canonical and Non-Canonical Functions. Front Immunol 2021; 12:722563. [PMID: 34630397 PMCID: PMC8492903 DOI: 10.3389/fimmu.2021.722563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/19/2021] [Indexed: 11/23/2022] Open
Affiliation(s)
- Esen Sefik
- Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Shohei Hori
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyō, Japan
| | - Ajithkumar Vasanthakumar
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.,Cancer Immunobiology Program, Olivia Newton-John Cancer Research Institute, Melbourne, VIC, Australia
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6
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Gubser PM, Vasanthakumar A. Going sugar free: Treg cells avoid glucose to maintain functional fitness. Immunol Cell Biol 2021; 99:558-560. [PMID: 34013589 DOI: 10.1111/imcb.12461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 04/16/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Patrick M Gubser
- Peter Doherty Institute for Infection and Immunity, 792 Elizabeth Street, Melbourne, VIC, 3000, Australia
| | - Ajithkumar Vasanthakumar
- Peter Doherty Institute for Infection and Immunity, 792 Elizabeth Street, Melbourne, VIC, 3000, Australia.,Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg VIC 3084, Australia
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7
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Utzschneider DT, Gabriel SS, Chisanga D, Gloury R, Gubser PM, Vasanthakumar A, Shi W, Kallies A. Early precursor T cells establish and propagate T cell exhaustion in chronic infection. Nat Immunol 2020; 21:1256-1266. [PMID: 32839610 DOI: 10.1038/s41590-020-0760-z] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 07/10/2020] [Indexed: 02/06/2023]
Abstract
CD8+ T cells responding to chronic infections or tumors acquire an 'exhausted' state associated with elevated expression of inhibitory receptors, including PD-1, and impaired cytokine production. Exhausted T cells are continuously replenished by T cells with precursor characteristics that self-renew and depend on the transcription factor TCF1; however, their developmental requirements are poorly understood. In the present study, we demonstrate that high antigen load promoted the differentiation of precursor T cells, which acquired hallmarks of exhaustion within days of infection, whereas early effector cells retained polyfunctional features. Early precursor T cells showed epigenetic imprinting characteristic of T cell receptor-dependent transcription factor binding and were restricted to the generation of cells displaying exhaustion characteristics. Transcription factors BACH2 and BATF were key regulators with opposing functions in the generation of early precursor T cells. Overall, we demonstrate that exhaustion manifests first in TCF1+ precursor T cells and is propagated subsequently to the pool of antigen-specific T cells.
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Affiliation(s)
- Daniel T Utzschneider
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
| | - Sarah S Gabriel
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - David Chisanga
- Olivia Newton-John Cancer Research Institute, Heidelberg, Australia.,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Australia.,School of Cancer Medicine, La Trobe University, Heidelberg, Victoria, Australia
| | - Renee Gloury
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Patrick M Gubser
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia
| | - Ajithkumar Vasanthakumar
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Wei Shi
- Olivia Newton-John Cancer Research Institute, Heidelberg, Australia.,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.,School of Cancer Medicine, La Trobe University, Heidelberg, Victoria, Australia.,School of Computing and Information Systems, University of Melbourne, Melbourne, Australia
| | - Axel Kallies
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia. .,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.
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8
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Alvisi G, Brummelman J, Puccio S, Mazza EM, Tomada EP, Losurdo A, Zanon V, Peano C, Colombo FS, Scarpa A, Alloisio M, Vasanthakumar A, Roychoudhuri R, Kallikourdis M, Pagani M, Lopci E, Novellis P, Blume J, Kallies A, Veronesi G, Lugli E. IRF4 instructs effector Treg differentiation and immune suppression in human cancer. J Clin Invest 2020; 130:3137-3150. [PMID: 32125291 PMCID: PMC7260038 DOI: 10.1172/jci130426] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 02/26/2020] [Indexed: 12/29/2022] Open
Abstract
The molecular mechanisms responsible for the high immunosuppressive capacity of CD4+ Tregs in tumors are not well known. High-dimensional single-cell profiling of T cells from chemotherapy-naive individuals with non-small-cell lung cancer identified the transcription factor IRF4 as specifically expressed by a subset of intratumoral CD4+ effector Tregs with superior suppressive activity. In contrast to the IRF4- counterparts, IRF4+ Tregs expressed a vast array of suppressive molecules, and their presence correlated with multiple exhausted subpopulations of T cells. Integration of transcriptomic and epigenomic data revealed that IRF4, either alone or in combination with its partner BATF, directly controlled a molecular program responsible for immunosuppression in tumors. Accordingly, deletion of Irf4 exclusively in Tregs resulted in delayed tumor growth in mice while the abundance of IRF4+ Tregs correlated with poor prognosis in patients with multiple human cancers. Thus, a common mechanism underlies immunosuppression in the tumor microenvironment irrespective of the tumor type.
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Affiliation(s)
- Giorgia Alvisi
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Jolanda Brummelman
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Simone Puccio
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Emilia M.C. Mazza
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Elisa Paoluzzi Tomada
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Agnese Losurdo
- Humanitas Clinical and Research Center – IRCCS, Humanitas Cancer Center, Rozzano, Milan, Italy
| | - Veronica Zanon
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Clelia Peano
- Division of Genetic and Biomedical Research, UOS Milan, National Research Council, Rozzano, Milan, Italy
- Genomic Unit and
| | - Federico S. Colombo
- Humanitas Flow Cytometry Core, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Alice Scarpa
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Marco Alloisio
- Division of Thoracic Surgery, Humanitas Clinical and Research Hospital, Rozzano, Milan, Italy
- Biomedical Science Department, Humanitas University, Rozzano, Milan, Italy
| | - Ajithkumar Vasanthakumar
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Rahul Roychoudhuri
- Laboratory of Lymphocyte Signalling and Development, Babraham Institute, Cambridge, United Kingdom
| | - Marinos Kallikourdis
- Adaptive Immunity Laboratory, Humanitas Clinical and Research Center, Rozzano, Milan
| | - Massimiliano Pagani
- Istituto Nazionale Genetica Molecolare “Romeo ed Enrica Invernizzi,” Milan, Italy
| | - Egesta Lopci
- Nuclear Medicine Department, Humanitas Clinical and Research Hospital, Rozzano, Milan, Italy
| | - Pierluigi Novellis
- Division of Thoracic Surgery, Humanitas Clinical and Research Hospital, Rozzano, Milan, Italy
| | - Jonas Blume
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Axel Kallies
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Giulia Veronesi
- Division of Thoracic Surgery, Humanitas Clinical and Research Hospital, Rozzano, Milan, Italy
| | - Enrico Lugli
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
- Humanitas Flow Cytometry Core, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
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9
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Garg G, Muschaweckh A, Moreno H, Vasanthakumar A, Floess S, Lepennetier G, Oellinger R, Zhan Y, Regen T, Hiltensperger M, Peter C, Aly L, Knier B, Palam LR, Kapur R, Kaplan MH, Waisman A, Rad R, Schotta G, Huehn J, Kallies A, Korn T. Blimp1 Prevents Methylation of Foxp3 and Loss of Regulatory T Cell Identity at Sites of Inflammation. Cell Rep 2020; 26:1854-1868.e5. [PMID: 30759395 PMCID: PMC6389594 DOI: 10.1016/j.celrep.2019.01.070] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 12/13/2018] [Accepted: 01/17/2019] [Indexed: 01/16/2023] Open
Abstract
Foxp3+ regulatory T (Treg) cells restrict immune pathology in inflamed tissues; however, an inflammatory environment presents a threat to Treg cell identity and function. Here, we establish a transcriptional signature of central nervous system (CNS) Treg cells that accumulate during experimental autoimmune encephalitis (EAE) and identify a pathway that maintains Treg cell function and identity during severe inflammation. This pathway is dependent on the transcriptional regulator Blimp1, which prevents downregulation of Foxp3 expression and “toxic” gain-of-function of Treg cells in the inflamed CNS. Blimp1 negatively regulates IL-6- and STAT3-dependent Dnmt3a expression and function restraining methylation of Treg cell-specific conserved non-coding sequence 2 (CNS2) in the Foxp3 locus. Consequently, CNS2 is heavily methylated when Blimp1 is ablated, leading to a loss of Foxp3 expression and severe disease. These findings identify a Blimp1-dependent pathway that preserves Treg cell stability in inflamed non-lymphoid tissues. Most Foxp3+ Treg cells in the inflamed CNS express Blimp1 Blimp1 inhibits Dnmt3a and prevents methylation of the Foxp3 locus IL-6 contributes to methylation of the Foxp3 locus in a Dnmt3a-dependent manner Blimp1 counteracts the IL-6-driven destabilization of Treg cells
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Affiliation(s)
- Garima Garg
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Andreas Muschaweckh
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Helena Moreno
- Biomedical Center (BMC) and Center for Integrated Protein Science Munich, Faculty of Medicine, LMU Munich, Grosshaderner Str. 9, 82152 Planegg-Martinsried, Germany
| | - Ajithkumar Vasanthakumar
- The Peter Doherty Institute for Infection and Immunity, University of Melbourne, 792 Elizabeth St., Melbourne Victoria 3000, Australia; The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
| | - Stefan Floess
- Experimental Immunology, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Gildas Lepennetier
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Rupert Oellinger
- Institute of Molecular Oncology and Functional Genomics, TranslaTUM Cancer Center, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; Klinikum Rechts der Isar, Department of Medicine II, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Yifan Zhan
- The Peter Doherty Institute for Infection and Immunity, University of Melbourne, 792 Elizabeth St., Melbourne Victoria 3000, Australia; The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
| | - Tommy Regen
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg University of Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Michael Hiltensperger
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Christian Peter
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Lilian Aly
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Feodor-Lynen-Str. 17, 81377 Munich, Germany
| | - Benjamin Knier
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Lakshmi Reddy Palam
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, 1044 West Walnut St., Indianapolis, IN 46202, USA
| | - Reuben Kapur
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, 1044 West Walnut St., Indianapolis, IN 46202, USA
| | - Mark H Kaplan
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, 1044 West Walnut St., Indianapolis, IN 46202, USA
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg University of Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Roland Rad
- Institute of Molecular Oncology and Functional Genomics, TranslaTUM Cancer Center, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; Klinikum Rechts der Isar, Department of Medicine II, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Gunnar Schotta
- Biomedical Center (BMC) and Center for Integrated Protein Science Munich, Faculty of Medicine, LMU Munich, Grosshaderner Str. 9, 82152 Planegg-Martinsried, Germany
| | - Jochen Huehn
- Experimental Immunology, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Axel Kallies
- The Peter Doherty Institute for Infection and Immunity, University of Melbourne, 792 Elizabeth St., Melbourne Victoria 3000, Australia; The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
| | - Thomas Korn
- Klinikum Rechts der Isar, Department of Experimental Neuroimmunology, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Feodor-Lynen-Str. 17, 81377 Munich, Germany.
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10
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Vasanthakumar A, Chisanga D, Blume J, Gloury R, Britt K, Henstridge DC, Zhan Y, Torres SV, Liene S, Collins N, Cao E, Sidwell T, Li C, Spallanzani RG, Liao Y, Beavis PA, Gebhardt T, Trevaskis N, Nutt SL, Zajac JD, Davey RA, Febbraio MA, Mathis D, Shi W, Kallies A. Sex-specific adipose tissue imprinting of regulatory T cells. Nature 2020; 579:581-585. [PMID: 32103173 PMCID: PMC7241647 DOI: 10.1038/s41586-020-2040-3] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 01/14/2020] [Indexed: 12/16/2022]
Abstract
Adipose tissue is an energy store and a dynamic endocrine organ1,2. In particular, visceral adipose tissue (VAT) is critical for the regulation of systemic metabolism3,4. Impaired VAT function-for example, in obesity-is associated with insulin resistance and type 2 diabetes5,6. Regulatory T (Treg) cells that express the transcription factor FOXP3 are critical for limiting immune responses and suppressing tissue inflammation, including in the VAT7-9. Here we uncover pronounced sexual dimorphism in Treg cells in the VAT. Male VAT was enriched for Treg cells compared with female VAT, and Treg cells from male VAT were markedly different from their female counterparts in phenotype, transcriptional landscape and chromatin accessibility. Heightened inflammation in the male VAT facilitated the recruitment of Treg cells via the CCL2-CCR2 axis. Androgen regulated the differentiation of a unique IL-33-producing stromal cell population specific to the male VAT, which paralleled the local expansion of Treg cells. Sex hormones also regulated VAT inflammation, which shaped the transcriptional landscape of VAT-resident Treg cells in a BLIMP1 transcription factor-dependent manner. Overall, we find that sex-specific differences in Treg cells from VAT are determined by the tissue niche in a sex-hormone-dependent manner to limit adipose tissue inflammation.
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Affiliation(s)
- Ajithkumar Vasanthakumar
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia.
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
| | - David Chisanga
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Jonas Blume
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Renee Gloury
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Kara Britt
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Darren C Henstridge
- College of Health and Medicine, School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Yifan Zhan
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Santiago Valle Torres
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Sebastian Liene
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- Institute of Experimental Immunology, University of Bonn, Bonn, Germany
| | - Nicholas Collins
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Enyuan Cao
- Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia
| | - Tom Sidwell
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Chaoran Li
- Department of Immunology, Harvard Medical School, Boston, MA, USA
| | | | - Yang Liao
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Paul A Beavis
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Thomas Gebhardt
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Natalie Trevaskis
- Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia
| | - Stephen L Nutt
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Jeffrey D Zajac
- Department of Medicine, Austin Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Rachel A Davey
- Department of Medicine, Austin Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mark A Febbraio
- Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia
| | - Diane Mathis
- Department of Immunology, Harvard Medical School, Boston, MA, USA
| | - Wei Shi
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Computing and Information Systems, The University of Melbourne, Melbourne, Victoria, Australia
| | - Axel Kallies
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia.
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
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11
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Sidwell T, Liao Y, Vasanthakumar A, Shi W, Kallies A. Bach2 attenuates T cell receptor-dependent transcription to fine-tune regulatory T cell differentiation. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.125.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
The differentiation of regulatory T (Treg) cells is strictly controlled by T cell receptor (TCR) signals. However, the downstream regulators of this process are incompletely understood. Here we have found that Bach2 blocks the genomic binding of the TCR-induced transcription factor IRF4, attenuating TCR-dependent transcriptional programs to fine-tune Treg cell development and differentiation.
In the absence of Bach2 we observed an increase in TCR-driven Treg cell outcomes, including the enhanced differentiation of effector Treg cells and thymic Treg precursor cells, and a reduction in peripheral Treg cell differentiation. Additional loss of the TCR-responsive transcription factor IRF4 was sufficient to normalise frequencies of each of these Treg cell populations in the absence of Bach2. Transcriptomic analysis identified significant deregulation of gene expression in Bach2-deficient cells which was dependent upon IRF4 expression. Assessing genome-wide occupancy of these transcription factors, we found Bach2 to restrict access of IRF4 to most of its genomic binding sites. Together, these data indicate that Bach2 inhibits IRF4-dependent transcription by blocking its access to their shared binding sites.
Our work reveals Bach2 and IRF4 to drive opposing programs in Treg cell development and differentiation. Bach2 maintains the functional quiescence of Treg cells, in large part by blocking the genomic binding of IRF4 to attenuate the transcriptional program of TCR signalling.
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Affiliation(s)
- Tom Sidwell
- 1The Peter Doherty Institute for Infection and Immunity, Univ. Melbourne, Australia
| | - Yang Liao
- 2The Walter and Eliza Hall Institute of Medical Research, Australia, Australia
| | | | - Wei Shi
- 2The Walter and Eliza Hall Institute of Medical Research, Australia, Australia
| | - Axel Kallies
- 1The Peter Doherty Institute for Infection and Immunity, Univ. Melbourne, Australia
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12
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Vasanthakumar A, Kallies A. Interleukin (IL)-33 and the IL-1 Family of Cytokines-Regulators of Inflammation and Tissue Homeostasis. Cold Spring Harb Perspect Biol 2019; 11:cshperspect.a028506. [PMID: 29101106 DOI: 10.1101/cshperspect.a028506] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cytokines play an integral role in shaping innate and adaptive immune responses. Members of the interleukin (IL)-1 family regulate a plethora of immune-cell-mediated processes, which include pathogen defense and tissue homeostasis. Notably, the IL-1 family cytokine IL-33 promotes adaptive and innate type 2 immune responses, confers viral protection and facilitates glucose metabolism and tissue repair. At the cellular level, IL-33 stimulates differentiation, maintenance, and function of various immune cell types, including regulatory T cells, effector CD4+ and CD8+ T cells, macrophages, and type 2 innate lymphoid cells (ILC2s). Other IL-1 family members, such as IL-1β and IL-18 promote type 1 responses, while IL-37 limits immune activation. Although IL-1 cytokines play critical roles in immunity and tissue repair, their deregulated expression is often linked to autoimmune and inflammatory diseases. Therefore, IL-1 cytokines are regulated tightly by posttranscriptional mechanisms and decoy receptors. In this review, we discuss the biology and function of IL-1 family cytokines, with a specific focus on regulation and function of IL-33 in immune and tissue homeostasis.
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Affiliation(s)
- Ajithkumar Vasanthakumar
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria 3052, Australia.,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria 3052, Australia
| | - Axel Kallies
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria 3052, Australia.,The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria 3052, Australia.,The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria 3000, Australia
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13
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Ponraj T, Vivek R, Paulpandi M, Vimala K, Vasanthakumar A, Kannan S. Photosensitizer-based multimodal nanocomposites as a theranostic agent for near infrared (NIR)-guided cancer-targeting synergistic chemo-phototherapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz029.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Zhan Y, Wang N, Vasanthakumar A, Zhang Y, Chopin M, Nutt SL, Kallies A, Lew AM. CCR2 enhances CD25 expression by FoxP3 + regulatory T cells and regulates their abundance independently of chemotaxis and CCR2 + myeloid cells. Cell Mol Immunol 2018; 17:123-132. [PMID: 30538272 DOI: 10.1038/s41423-018-0187-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 11/15/2018] [Indexed: 01/02/2023] Open
Abstract
A wide array of chemokine receptors, including CCR2, are known to control Treg migration. Here, we report that CCR2 regulates Tregs beyond chemotaxis. We found that CCR2 deficiency reduced CD25 expression by FoxP3+ Treg cells. Such a change was also consistently present in irradiation chimeras reconstituted with mixed bone marrow from wild-type (WT) and CCR2-/- strains. Thus, CCR2 deficiency resulted in profound loss of CD25hi FoxP3+ Tregs in secondary lymphoid organs as well as in peripheral tissues. CCR2-/- Treg cells were also functionally inferior to WT cells. Interestingly, these changes to Treg cells did not depend on CCR2+ monocytes/moDCs (the cells where CCR2 receptors are most abundant). Rather, we demonstrated that CCR2 was required for TLR-stimulated, but not TCR- or IL-2-stimulated, CD25 upregulation on Treg cells. Thus, we propose that CCR2 signaling can increase the fitness of FoxP3+ Treg cells and provide negative feedback to counter the proinflammatory effects of CCR2 on myeloid cells.
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Affiliation(s)
- Yifan Zhan
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia. .,Guangzhou Institute of Paediatrics, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, 510623, Guangzhou, Guangdong, China.
| | - Nancy Wang
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Ajithkumar Vasanthakumar
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Yuxia Zhang
- Guangzhou Institute of Paediatrics, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, 510623, Guangzhou, Guangdong, China
| | - Michael Chopin
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Stephen L Nutt
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Axel Kallies
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Andrew M Lew
- The Walter & Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, 3010, Australia
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15
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Affiliation(s)
| | - Ajithkumar Vasanthakumar
- The Peter Doherty Institute for Infection and Immunity University of Melbourne Melbourne VIC Australia
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16
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Vasanthakumar A, Liao Y, Teh P, Pascutti MF, Oja AE, Garnham AL, Gloury R, Tempany JC, Sidwell T, Cuadrado E, Tuijnenburg P, Kuijpers TW, Lalaoui N, Mielke LA, Bryant VL, Hodgkin PD, Silke J, Smyth GK, Nolte MA, Shi W, Kallies A. The TNF Receptor Superfamily-NF-κB Axis Is Critical to Maintain Effector Regulatory T Cells in Lymphoid and Non-lymphoid Tissues. Cell Rep 2017; 20:2906-2920. [PMID: 28889989 DOI: 10.1016/j.celrep.2017.08.068] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/16/2017] [Accepted: 08/23/2017] [Indexed: 12/22/2022] Open
Abstract
After exiting the thymus, Foxp3+ regulatory T (Treg) cells undergo further differentiation in the periphery, resulting in the generation of mature, fully suppressive effector (e)Treg cells in a process dependent on TCR signaling and the transcription factor IRF4. Here, we show that tumor necrosis factor receptor superfamily (TNFRSF) signaling plays a crucial role in the development and maintenance of eTreg cells. TNFRSF signaling activated the NF-κB transcription factor RelA, which was required to maintain eTreg cells in lymphoid and non-lymphoid tissues, including RORγt+ Treg cells in the small intestine. In response to TNFRSF signaling, RelA regulated basic cellular processes, including cell survival and proliferation, but was dispensable for IRF4 expression or DNA binding, indicating that both pathways operated independently. Importantly, mutations in the RelA binding partner NF-κB1 compromised eTreg cells in humans, suggesting that the TNFRSF-NF-κB axis was required in a non-redundant manner to maintain eTreg cells in mice and humans.
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Affiliation(s)
- Ajithkumar Vasanthakumar
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Australia.
| | - Yang Liao
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Peggy Teh
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Australia; Alfred Health and Western Health, Melbourne, Australia
| | - Maria F Pascutti
- Department of Hematopoiesis, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Anna E Oja
- Department of Hematopoiesis, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Alexandra L Garnham
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Renee Gloury
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Jessica C Tempany
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Tom Sidwell
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Eloy Cuadrado
- Department of Hematopoiesis, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands; Department of Pediatric Hematology, Immunology, and Infectious Diseases, Emma Children's Hospital, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Paul Tuijnenburg
- Department of Pediatric Hematology, Immunology, and Infectious Diseases, Emma Children's Hospital, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Taco W Kuijpers
- Department of Pediatric Hematology, Immunology, and Infectious Diseases, Emma Children's Hospital, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Najoua Lalaoui
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Cell Signalling and Cell Death Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Lisa A Mielke
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Vanessa L Bryant
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Philip D Hodgkin
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - John Silke
- Department of Medical Biology, University of Melbourne, Melbourne, Australia; Cell Signalling and Cell Death Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Gordon K Smyth
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; The Department of Mathematics and Statistics, University of Melbourne, Melbourne, Australia
| | - Martijn A Nolte
- Department of Hematopoiesis, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Wei Shi
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; Department of Computing and Information Systems, University of Melbourne, Melbourne, Australia
| | - Axel Kallies
- Molecular Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia; The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
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17
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Vasanthakumar A, Xu D, Lun AT, Kueh AJ, van Gisbergen KP, Iannarella N, Li X, Yu L, Wang D, Williams BR, Lee SC, Majewski IJ, Godfrey DI, Smyth GK, Alexander WS, Herold MJ, Kallies A, Nutt SL, Allan RS. A non-canonical function of Ezh2 preserves immune homeostasis. EMBO Rep 2017; 18:619-631. [PMID: 28223321 DOI: 10.15252/embr.201643237] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 01/18/2017] [Accepted: 01/22/2017] [Indexed: 12/22/2022] Open
Abstract
Enhancer of zeste 2 (Ezh2) mainly methylates lysine 27 of histone-H3 (H3K27me3) as part of the polycomb repressive complex 2 (PRC2) together with Suz12 and Eed. However, Ezh2 can also modify non-histone substrates, although it is unclear whether this mechanism has a role during development. Here, we present evidence for a chromatin-independent role of Ezh2 during T-cell development and immune homeostasis. T-cell-specific depletion of Ezh2 induces a pronounced expansion of natural killer T (NKT) cells, although Ezh2-deficient T cells maintain normal levels of H3K27me3. In contrast, removal of Suz12 or Eed destabilizes canonical PRC2 function and ablates NKT cell development completely. We further show that Ezh2 directly methylates the NKT cell lineage defining transcription factor PLZF, leading to its ubiquitination and subsequent degradation. Sustained PLZF expression in Ezh2-deficient mice is associated with the expansion of a subset of NKT cells that cause immune perturbation. Taken together, we have identified a chromatin-independent function of Ezh2 that impacts on the development of the immune system.
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Affiliation(s)
- Ajithkumar Vasanthakumar
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Dakang Xu
- Institute of Ageing Research, Hangzhou Normal University School of Medicine, Hangzhou, China.,Hudson Institute of Medical Research, Monash University, Clayton, Vic., Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic., Australia
| | - Aaron Tl Lun
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Andrew J Kueh
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Klaas Pjm van Gisbergen
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Nadia Iannarella
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia
| | - Xiaofang Li
- Institute of Ageing Research, Hangzhou Normal University School of Medicine, Hangzhou, China.,Hudson Institute of Medical Research, Monash University, Clayton, Vic., Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic., Australia
| | - Liang Yu
- Hudson Institute of Medical Research, Monash University, Clayton, Vic., Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic., Australia
| | - Die Wang
- Hudson Institute of Medical Research, Monash University, Clayton, Vic., Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic., Australia
| | - Bryan Rg Williams
- Hudson Institute of Medical Research, Monash University, Clayton, Vic., Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic., Australia
| | - Stanley Cw Lee
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Ian J Majewski
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Dale I Godfrey
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Vic., Australia.,ARC Centre of Excellence for Advanced Molecular Imaging, The University of Melbourne, Parkville, Vic., Australia
| | - Gordon K Smyth
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Mathematics and Statistics, The University of Melbourne, Parkville, Vic., Australia
| | - Warren S Alexander
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Marco J Herold
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Axel Kallies
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Stephen L Nutt
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia .,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
| | - Rhys S Allan
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia .,Department of Medical Biology, The University of Melbourne, Parkville, Vic., Australia
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18
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Tuzlak S, Schenk RL, Vasanthakumar A, Preston SP, Haschka MD, Zotos D, Kallies A, Strasser A, Villunger A, Herold MJ. The BCL-2 pro-survival protein A1 is dispensable for T cell homeostasis on viral infection. Cell Death Differ 2017; 24:523-533. [PMID: 28085151 DOI: 10.1038/cdd.2016.155] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 11/08/2016] [Accepted: 12/01/2016] [Indexed: 12/31/2022] Open
Abstract
The physiological role of the pro-survival BCL-2 family member A1 has been debated for a long time. Strong mRNA induction in T cells on T cell receptor (TCR)-engagement suggested a major role of A1 in the survival of activated T cells. However, the investigation of the physiological roles of A1 was complicated by the quadruplication of the A1 gene locus in mice, making A1 gene targeting very difficult. Here, we used the recently generated A1-/- mouse model to examine the role of A1 in T cell immunity. We confirmed rapid and strong induction of A1 protein in response to TCR/CD3 stimulation in CD4+ as well as CD8+ T cells. Surprisingly, on infection with the acute influenza HKx31 or the lymphocytic choriomeningitis virus docile strains mice lacking A1 did not show any impairment in the expansion, survival, or effector function of cytotoxic T cells. Furthermore, the ability of A1-/- mice to generate antigen-specific memory T cells or to provide adequate CD4-dependent help to B cells was not impaired. These results suggest functional redundancy of A1 with other pro-survival BCL-2 family members in the control of T cell-dependent immune responses.
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Affiliation(s)
- Selma Tuzlak
- Division of Developmental Immunology, BIOCENTER, Medical University Innsbruck, Innsbruck, Austria.,The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia
| | - Robyn L Schenk
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Ajithkumar Vasanthakumar
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Simon P Preston
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Manuel D Haschka
- Division of Developmental Immunology, BIOCENTER, Medical University Innsbruck, Innsbruck, Austria
| | - Dimitra Zotos
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Axel Kallies
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Andreas Strasser
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
| | - Andreas Villunger
- Division of Developmental Immunology, BIOCENTER, Medical University Innsbruck, Innsbruck, Austria.,Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Marco J Herold
- The Walter & Eliza Hall Institute for Medical Research, Parkville, Melbourne, VIC 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3050, Australia
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19
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de Valle E, Grigoriadis G, O'Reilly LA, Willis SN, Maxwell MJ, Corcoran LM, Tsantikos E, Cornish JK, Fairfax KA, Vasanthakumar A, Febbraio MA, Hibbs ML, Pellegrini M, Banerjee A, Hodgkin PD, Kallies A, Mackay F, Strasser A, Gerondakis S, Gugasyan R. NFκB1 is essential to prevent the development of multiorgan autoimmunity by limiting IL-6 production in follicular B cells. J Biophys Biochem Cytol 2016. [DOI: 10.1083/jcb.2131oia67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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20
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de Valle E, Grigoriadis G, O'Reilly LA, Willis SN, Maxwell MJ, Corcoran LM, Tsantikos E, Cornish JKS, Fairfax KA, Vasanthakumar A, Febbraio MA, Hibbs ML, Pellegrini M, Banerjee A, Hodgkin PD, Kallies A, Mackay F, Strasser A, Gerondakis S, Gugasyan R. NFκB1 is essential to prevent the development of multiorgan autoimmunity by limiting IL-6 production in follicular B cells. J Exp Med 2016; 213:621-41. [PMID: 27022143 PMCID: PMC4821646 DOI: 10.1084/jem.20151182] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 03/01/2016] [Indexed: 12/15/2022] Open
Abstract
de Valle et al. show that, with age, NFκB1-deficient B cells spontaneously secrete IL-6 and cause a multiorgan autoimmune disease. We examined the role of NFκB1 in the homeostasis and function of peripheral follicular (Fo) B cells. Aging mice lacking NFκB1 (Nfκb1−/−) develop lymphoproliferative and multiorgan autoimmune disease attributed in large part to the deregulated activity of Nfκb1−/− Fo B cells that produce excessive levels of the proinflammatory cytokine interleukin 6 (IL-6). Despite enhanced germinal center (GC) B cell differentiation, the formation of GC structures was severely disrupted in the Nfκb1−/− mice. Bone marrow chimeric mice revealed that the Fo B cell–intrinsic loss of NFκB1 led to the spontaneous generation of GC B cells. This was primarily the result of an increase in IL-6 levels, which promotes the differentiation of Fo helper CD4+ T cells and acts in an autocrine manner to reduce antigen receptor and toll-like receptor activation thresholds in a population of proliferating IgM+Nfκb1−/− Fo B cells. We demonstrate that p50-NFκB1 represses Il-6 transcription in Fo B cells, with the loss of NFκB1 also resulting in the uncontrolled RELA-driven transcription of Il-6. Collectively, our findings identify a previously unrecognized role for NFκB1 in preventing multiorgan autoimmunity through its negative regulation of Il-6 gene expression in Fo B cells.
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Affiliation(s)
- Elisha de Valle
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - George Grigoriadis
- School of Clinical Sciences, Monash University, Melbourne, VIC 3004, Australia Center for Cancer Research, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia Clinical Haematology, Monash and Alfred Health, Melbourne, VIC 3168, Australia
| | - Lorraine A O'Reilly
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Simon N Willis
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Mhairi J Maxwell
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Lynn M Corcoran
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Evelyn Tsantikos
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Jasper K S Cornish
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Kirsten A Fairfax
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Ajithkumar Vasanthakumar
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Mark A Febbraio
- Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW 2010, Australia
| | - Margaret L Hibbs
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Marc Pellegrini
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Ashish Banerjee
- Center for Cancer Research, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia
| | - Philip D Hodgkin
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Axel Kallies
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Fabienne Mackay
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Andreas Strasser
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Steve Gerondakis
- Infection and Immunity Program, Monash Biomedical Discovery Institute, Monash University, Melbourne, VIC 3004, Australia Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3004, Australia
| | - Raffi Gugasyan
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
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21
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Murphy AJ, Kraakman MJ, Kammoun HL, Dragoljevic D, Lee MKS, Lawlor KE, Wentworth JM, Vasanthakumar A, Gerlic M, Whitehead LW, DiRago L, Cengia L, Lane RM, Metcalf D, Vince JE, Harrison LC, Kallies A, Kile BT, Croker BA, Febbraio MA, Masters SL. IL-18 Production from the NLRP1 Inflammasome Prevents Obesity and Metabolic Syndrome. Cell Metab 2016; 23:155-64. [PMID: 26603191 DOI: 10.1016/j.cmet.2015.09.024] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 06/03/2015] [Accepted: 09/23/2015] [Indexed: 11/15/2022]
Abstract
Interleukin-18 (IL-18) is activated by Caspase-1 in inflammasome complexes and has anti-obesity effects; however, it is not known which inflammasome regulates this process. We found that mice lacking the NLRP1 inflammasome phenocopy mice lacking IL-18, with spontaneous obesity due to intrinsic lipid accumulation. This is exacerbated when the mice are fed a high-fat diet (HFD) or a high-protein diet, but not when mice are fed a HFD with low energy density (high fiber). Furthermore, mice with an activating mutation in NLRP1, and hence increased IL-18, have decreased adiposity and are resistant to diet-induced metabolic dysfunction. Feeding these mice a HFD further increased plasma IL-18 concentrations and strikingly resulted in loss of adipose tissue mass and fatal cachexia, which could be prevented by genetic deletion of IL-18. Thus, NLRP1 is an innate immune sensor that functions in the context of metabolic stress to produce IL-18, preventing obesity and metabolic syndrome.
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Affiliation(s)
- Andrew J Murphy
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia; Department of Immunology, Monash University, Melbourne 3004, Australia
| | - Michael J Kraakman
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Helene L Kammoun
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia; Cellular and Molecular Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Dragana Dragoljevic
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia; Department of Immunology, Monash University, Melbourne 3004, Australia
| | - Man K S Lee
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia; Department of Immunology, Monash University, Melbourne 3004, Australia
| | - Kate E Lawlor
- Division of Inflammation, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - John M Wentworth
- Division of Molecular Medicine, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Ajithkumar Vasanthakumar
- Division of Immunology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Lachlan W Whitehead
- Division of Systems Biology and Personalised Medicine, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia
| | - Ladina DiRago
- Division of Cancer and Hematology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia
| | - Louise Cengia
- Division of Cancer and Hematology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia
| | - Rachael M Lane
- Division of ACRF Chemical Biology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia
| | - Donald Metcalf
- Division of Cancer and Hematology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - James E Vince
- Division of Inflammation, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Leonard C Harrison
- Division of Molecular Medicine, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Axel Kallies
- Division of Immunology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Benjamin T Kile
- Division of ACRF Chemical Biology, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | - Ben A Croker
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Mark A Febbraio
- Cellular and Molecular Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia; Division of Diabetes and Metabolism, Garvan Institute of Medical Research, Darlinghurst 2010, Australia
| | - Seth L Masters
- Division of Inflammation, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia.
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22
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Vasanthakumar A, Bahadur I, Redhi G, Gengan RM. Synthesis and characterization of 2′,3′-epoxy propyl-N-methyl-2-oxopyrrolidinium salicylate ionic liquid and study of its interaction with water or methanol. RSC Adv 2016. [DOI: 10.1039/c6ra11327c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Important physico-chemical properties of ionic liquids (ILs) can be manipulated by adjusting the nature of the cation or anion.
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Affiliation(s)
- A. Vasanthakumar
- Department of Chemistry
- Durban University of Technology
- Durban
- South Africa
| | - I. Bahadur
- Department of Chemistry
- School of Mathematical and Physical Sciences
- Faculty of Agriculture, Science and Technology
- North-West University (Mafikeng Campus)
- Mmabatho 2735
| | - G. Redhi
- Department of Chemistry
- Durban University of Technology
- Durban
- South Africa
| | - R. M. Gengan
- Department of Chemistry
- Durban University of Technology
- Durban
- South Africa
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23
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Abstract
Foxp3(+) regulatory T (Treg) cells suppress auto-reactive and inflammatory T cells to maintain immune homeostasis. In a recent study, Rudensky and colleagues demonstrate the ability of Treg cells to facilitate tissue repair, a non-canonical Treg cell function accomplished by amphiregulin and mediated by cytokines interleukin (IL)-18 and IL-33.
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Affiliation(s)
- Ajithkumar Vasanthakumar
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Axel Kallies
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, Victoria, 3010, Australia.
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24
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Kraakman MJ, Kammoun HL, Allen TL, Deswaerte V, Henstridge DC, Estevez E, Matthews VB, Neill B, White DA, Murphy AJ, Peijs L, Yang C, Risis S, Bruce CR, Du XJ, Bobik A, Lee-Young RS, Kingwell BA, Vasanthakumar A, Shi W, Kallies A, Lancaster GI, Rose-John S, Febbraio MA. Blocking IL-6 trans-signaling prevents high-fat diet-induced adipose tissue macrophage recruitment but does not improve insulin resistance. Cell Metab 2015; 21:403-16. [PMID: 25738456 DOI: 10.1016/j.cmet.2015.02.006] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/21/2014] [Accepted: 02/06/2015] [Indexed: 01/01/2023]
Abstract
Interleukin-6 (IL-6) plays a paradoxical role in inflammation and metabolism. The pro-inflammatory effects of IL-6 are mediated via IL-6 "trans-signaling," a process where the soluble form of the IL-6 receptor (sIL-6R) binds IL-6 and activates signaling in inflammatory cells that express the gp130 but not the IL-6 receptor. Here we show that trans-signaling recruits macrophages into adipose tissue (ATM). Moreover, blocking trans-signaling with soluble gp130Fc protein prevents high-fat diet (HFD)-induced ATM accumulation, but does not improve insulin action. Importantly, however, blockade of IL-6 trans-signaling, unlike complete ablation of IL-6 signaling, does not exacerbate obesity-induced weight gain, liver steatosis, or insulin resistance. Our data identify the sIL-6R as a critical chemotactic signal for ATM recruitment and suggest that selectively blocking IL-6 trans-signaling may be a more favorable treatment option for inflammatory diseases, compared with current treatments that completely block the action of IL-6 and negatively impact upon metabolic homeostasis.
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Affiliation(s)
- Michael J Kraakman
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Helene L Kammoun
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Tamara L Allen
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Virginie Deswaerte
- Vascular Biology and Atherosclerosis Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Darren C Henstridge
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Emma Estevez
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Vance B Matthews
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Bronwyn Neill
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - David A White
- Experimental Cardiology Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Andrew J Murphy
- Haematopoiesis and Leukocyte Biology Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Lone Peijs
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Christine Yang
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Steve Risis
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Clinton R Bruce
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Xiao-Jun Du
- Experimental Cardiology Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Alex Bobik
- Vascular Biology and Atherosclerosis Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Robert S Lee-Young
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Bronwyn A Kingwell
- Metabolic and Vascular Physiology Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | | | - Wei Shi
- Walter & Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Computing and Information Systems, University of Melbourne, Parkville, VIC 3010, Australia
| | - Axel Kallies
- Walter & Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Graeme I Lancaster
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Stefan Rose-John
- Department of Biochemistry, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
| | - Mark A Febbraio
- Cellular and Molecular Metabolism Laboratory, BakerIDI Heart & Diabetes Institute, Melbourne, VIC 3004, Australia.
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25
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Villa F, Vasanthakumar A, Mitchell R, Cappitelli F. RNA-based molecular survey of biodiversity of limestone tombstone microbiota in response to atmospheric sulphur pollution. Lett Appl Microbiol 2014; 60:92-102. [DOI: 10.1111/lam.12345] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 10/18/2014] [Accepted: 10/19/2014] [Indexed: 11/30/2022]
Affiliation(s)
- F. Villa
- Dipartimento di Scienze per gli Alimenti; la Nutrizione e l'Ambiente; Università degli Studi di Milano; Milano Italy
| | - A. Vasanthakumar
- Laboratory of Applied Microbiology; School of Engineering and Applied Sciences; Harvard University; Cambridge MA USA
| | - R. Mitchell
- Laboratory of Applied Microbiology; School of Engineering and Applied Sciences; Harvard University; Cambridge MA USA
| | - F. Cappitelli
- Dipartimento di Scienze per gli Alimenti; la Nutrizione e l'Ambiente; Università degli Studi di Milano; Milano Italy
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26
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Affiliation(s)
- Axel Kallies
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
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27
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Vasanthakumar A, Kallies A. IL-27 paves different roads to Tr1. Eur J Immunol 2013; 43:882-5. [PMID: 23504674 DOI: 10.1002/eji.201343479] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 02/25/2013] [Accepted: 03/12/2013] [Indexed: 01/17/2023]
Abstract
Tr1 cells are non-Foxp3-expressing regulatory CD4(+) T cells that execute suppressor functions by secreting the anti-inflammatory cytokine IL-10. Differentiation of this T-cell subset is facilitated by the heterodimeric cytokine IL-27, which can activate transcription factors such as c-Maf and Ahr to positively regulate the differentiation of Tr1 cells and their IL-10 production. In this issue of the European Journal of Immunology, an alternate transcriptional network regulated by IL-27 to induce IL-10 production in Tr1 cells is reported by Iwasaki et al. [Eur. J. Immunol. 2013. 43: 1063-1073]. This study shows that IL-27 initiates tandem activation of the transcription factors STAT3 and Egr-2 to induce il10 in Tr1 cells in a Blimp1-dependent fashion. These findings indicate a c-Maf/Ahr independent mechanism that activates IL-10 production by Tr1 cells and suggest that Il10 induction may depend on both the cytokine environment and the molecular context. Thus, Tr1 cells may be another example of the remarkable plasticity of CD4(+) T cells and indeed may not constitute a separate lineage of CD4(+) T cells but rather represent a developmental endpoint of several T helper cell differentiation pathways.
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28
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Abstract
Regulatory T cells (Tregs) are a specialized subset of CD4 T cells that have an indispensable role in maintaining immune homeostasis and tolerance. Although studies in mice and humans have clearly highlighted that the absence of these cells results in severe autoimmunity and inflammation, increased Treg numbers and/or function is not always beneficial. This is best exemplified in certain cancers where increased Tregs promote cancer progression by interfering with immune surveillance. Conversely, in other types of cancers that have an inflammatory component, Tregs can inhibit cancer progression by dampening inflammation. In this review article, we provide a historical perspective of the discovery of Tregs, followed by a summary of the existing literature on the role of Tregs in malignancy.
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Affiliation(s)
- Ashish Banerjee
- Centre for Inflammatory Diseases, Monash Medical Centre, Southern Clinical School, Monash University, Clayton, Victoria, Australia.
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29
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Vasanthakumar A, Kattusamy K, Prasad R. Regulation of daunorubicin biosynthesis inStreptomyces peucetius -feed forward and feedback transcriptional control. J Basic Microbiol 2013; 53:636-44. [DOI: 10.1002/jobm.201200302] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 08/03/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Ajithkumar Vasanthakumar
- Walter and Eliza Hall Institute of Medical Research; 1G, Royal Parade, Parkville, Melbourne; Victoria; Australia
| | - Karuppasamy Kattusamy
- Department of Genetic Engineering; School of Biotechnology, Madurai Kamaraj University; Madurai; India
| | - Ranjan Prasad
- Department of Genetic Engineering; School of Biotechnology, Madurai Kamaraj University; Madurai; India
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30
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Abstract
Although the diverse functions served by the nuclear factor-κB (NF-κB) pathway in virtually all cell types are typically employed to deal with stress responses, NF-κB transcription factors also play key roles in the development of hemopoietic cells. This review focuses on how NF-κB transcription factors control various aspects of thymic T-cell and myeloid cell differentiation that include its roles in hemopoietic precursors, conventional αβ T cells, CD4(+) regulatory T cells, natural killer T cells, γδ T cells, macrophages, and dendritic cells.
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31
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Grigoriadis G, Vasanthakumar A, Banerjee A, Grumont R, Overall S, Gleeson P, Shannon F, Gerondakis S. c-Rel controls multiple discrete steps in the thymic development of Foxp3+ CD4 regulatory T cells. PLoS One 2011; 6:e26851. [PMID: 22066012 PMCID: PMC3204987 DOI: 10.1371/journal.pone.0026851] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Accepted: 10/05/2011] [Indexed: 12/21/2022] Open
Abstract
The development of natural Foxp3+ CD4 regulatory T cells (nTregs) proceeds via two steps that involve the initial antigen dependent generation of CD25+GITRhiFoxp3−CD4+ nTreg precursors followed by the cytokine induction of Foxp3. Using mutant mouse models that lack c-Rel, the critical NF-κB transcription factor required for nTreg differentiation, we establish that c-Rel regulates both of these developmental steps. c-Rel controls the generation of nTreg precursors via a haplo-insufficient mechanism, indicating that this step is highly sensitive to c-Rel levels. However, maintenance of c-Rel in an inactive state in nTreg precursors demonstrates that it is not required for a constitutive function in these cells. While the subsequent IL-2 induction of Foxp3 in nTreg precursors requires c-Rel, this developmental transition does not coincide with the nuclear expression of c-Rel. Collectively, our results support a model of nTreg differentiation in which c-Rel generates a permissive state for foxp3 transcription during the development of nTreg precursors that influences the subsequent IL-2 dependent induction of Foxp3 without a need for c-Rel reactivation.
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Affiliation(s)
- George Grigoriadis
- Centre for Immunology, Burnet Institute, Melbourne, Australia
- Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Australia
| | | | - Ashish Banerjee
- Centre for Immunology, Burnet Institute, Melbourne, Australia
| | - Raelene Grumont
- Centre for Immunology, Burnet Institute, Melbourne, Australia
| | - Sarah Overall
- Bio21, University of Melbourne, Parkville, Australia
| | - Paul Gleeson
- Bio21, University of Melbourne, Parkville, Australia
| | - Frances Shannon
- The John Curtin School of Medical Research, Australian National University, Canberra City, Australia
| | - Steve Gerondakis
- Centre for Immunology, Burnet Institute, Melbourne, Australia
- Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Australia
- Department of Immunology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Australia
- * E-mail:
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