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Aybar-Torres A, Saldarriaga LA, Pham AT, Emtiazjoo AM, Sharma AK, Bryant AJ, Jin L. The common TMEM173 HAQ, AQ alleles rescue CD4 T cellpenia, restore T-regs, and prevent SAVI (N153S) inflammatory disease in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.05.561109. [PMID: 37886547 PMCID: PMC10602033 DOI: 10.1101/2023.10.05.561109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The significance of STING (encoded by the TMEM173 gene) in tissue inflammation and cancer immunotherapy has been increasingly recognized. Intriguingly, common human TMEM173 alleles R71H-G230A-R293Q (HAQ) and G230A-R293Q (AQ) are carried by ~60% of East Asians and ~40% of Africans, respectively. Here, we examine the modulatory effects of HAQ, AQ alleles on STING-associated vasculopathy with onset in infancy (SAVI), an autosomal dominant, fatal inflammatory disease caused by gain-of-function human STING mutations. CD4 T cellpenia is evident in SAVI patients and mouse models. Using STING knock-in mice expressing common human TMEM173 alleles HAQ, AQ, and Q293, we found that HAQ, AQ, and Q293 splenocytes resist STING-mediated cell death ex vivo, establishing a critical role of STING residue 293 in cell death. The HAQ/SAVI(N153S) and AQ/SAVI(N153S) mice did not have CD4 T cellpenia. The HAQ/SAVI(N153S), AQ/SAVI(N153S) mice have more (~10-fold, ~20-fold, respectively) T-regs than WT/SAVI(N153S) mice. Remarkably, while they have comparable TBK1, IRF3, and NFκB activation as the WT/SAVI, the AQ/SAVI mice have no tissue inflammation, regular body weight, and normal lifespan. We propose that STING activation promotes tissue inflammation by depleting T-regs cells in vivo. Billions of modern humans have the dominant HAQ, AQ alleles. STING research and STING-targeting immunotherapy should consider TMEM173 heterogeneity in humans.
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Affiliation(s)
- Alexandra Aybar-Torres
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
| | - Lennon A Saldarriaga
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
| | - Ann T Pham
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
| | - Amir M Emtiazjoo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
| | - Ashish K Sharma
- Division of Vascular Surgery & Endovascular Therapy, Department of Surgery, University of Florida, Gainesville, FL 32610, U.S.A
| | - Andrew J Bryant
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
| | - Lei Jin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, U.S.A
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Mazzoccoli L, Liu B. Dendritic Cells in Shaping Anti-Tumor T Cell Response. Cancers (Basel) 2024; 16:2211. [PMID: 38927916 PMCID: PMC11201542 DOI: 10.3390/cancers16122211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/07/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Among professional antigen-presenting cells, dendritic cells (DCs) orchestrate innate and adaptive immunity and play a pivotal role in anti-tumor immunity. DCs are a heterogeneous population with varying functions in the tumor microenvironment (TME). Tumor-associated DCs differentiate developmentally and functionally into three main subsets: conventional DCs (cDCs), plasmacytoid DCs (pDCs), and monocyte-derived DCs (MoDCs). There are two major subsets of cDCs in TME, cDC1 and cDC2. cDC1 is critical for cross-presenting tumor antigens to activate cytotoxic CD8+ T cells and is also required for priming earlier CD4+ T cells in certain solid tumors. cDC2 is vital for priming anti-tumor CD4+ T cells in multiple tumor models. pDC is a unique subset of DCs and produces type I IFN through TLR7 and TLR9. Studies have shown that pDCs are related to immunosuppression in the TME through the secretion of immunosuppressive cytokines and by promoting regulatory T cells. MoDCs differentiate separately from monocytes in response to inflammatory cues and infection. Also, MoDCs can cross-prime CD8+ T cells. In this review, we summarize the subsets and functions of DCs. We also discuss the role of different DC subsets in shaping T cell immunity in TME and targeting DCs for potential immunotherapeutic benefits against cancer.
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Affiliation(s)
- Luciano Mazzoccoli
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA;
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
| | - Bei Liu
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA;
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
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Baillou A, Tomal F, Chaumeil T, Barc C, Levern Y, Sausset A, Pezier T, Schulthess J, Peltier-Pain P, Laurent F, Lacroix-Lamandé S. Characterization of intestinal mononuclear phagocyte subsets in young ruminants at homeostasis and during Cryptosporidium parvum infection. Front Immunol 2024; 15:1379798. [PMID: 38756777 PMCID: PMC11096452 DOI: 10.3389/fimmu.2024.1379798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/03/2024] [Indexed: 05/18/2024] Open
Abstract
Introduction Cryptosporidiosis is a poorly controlled zoonosis caused by an intestinal parasite, Cryptosporidium parvum, with a high prevalence in livestock (cattle, sheep, and goats). Young animals are particularly susceptible to this infection due to the immaturity of their intestinal immune system. In a neonatal mouse model, we previously demonstrated the importance of the innate immunity and particularly of type 1 conventional dendritic cells (cDC1) among mononuclear phagocytes (MPs) in controlling the acute phase of C. parvum infection. These immune populations are well described in mice and humans, but their fine characterization in the intestine of young ruminants remained to be further explored. Methods Immune cells of the small intestinal Peyer's patches and of the distal jejunum were isolated from naive lambs and calves at different ages. This was followed by their fine characterization by flow cytometry and transcriptomic analyses (q-RT-PCR and single cell RNAseq (lamb cells)). Newborn animals were infected with C. parvum, clinical signs and parasite burden were quantified, and isolated MP cells were characterized by flow cytometry in comparison with age matched control animals. Results Here, we identified one population of macrophages and three subsets of cDC (cDC1, cDC2, and a minor cDC subset with migratory properties) in the intestine of lamb and calf by phenotypic and targeted gene expression analyses. Unsupervised single-cell transcriptomic analysis confirmed the identification of these four intestinal MP subpopulations in lamb, while highlighting a deeper diversity of cell subsets among monocytic and dendritic cells. We demonstrated a weak proportion of cDC1 in the intestine of highly susceptible newborn lambs together with an increase of these cells within the first days of life and in response to the infection. Discussion Considering cDC1 importance for efficient parasite control in the mouse model, one may speculate that the cDC1/cDC2 ratio plays also a key role for the efficient control of C. parvum in young ruminants. In this study, we established the first fine characterization of intestinal MP subsets in young lambs and calves providing new insights for comparative immunology of the intestinal MP system across species and for future investigations on host-Cryptosporidium interactions in target species.
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Affiliation(s)
- Ambre Baillou
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
- Phileo by Lesaffre, Marcq-en-Barœul, France
| | - Florian Tomal
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Thierry Chaumeil
- Unité Expérimentale (UE)1277 Plateforme d’Infectiologie Expérimentale (PFIE), INRAE Centre Val de Loire, Nouzilly, France
| | - Céline Barc
- Unité Expérimentale (UE)1277 Plateforme d’Infectiologie Expérimentale (PFIE), INRAE Centre Val de Loire, Nouzilly, France
| | - Yves Levern
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Alix Sausset
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Tiffany Pezier
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | | | | | - Fabrice Laurent
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Sonia Lacroix-Lamandé
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
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Cui H, Wang N, Li H, Bian Y, Wen W, Kong X, Wang F. The dynamic shifts of IL-10-producing Th17 and IL-17-producing Treg in health and disease: a crosstalk between ancient "Yin-Yang" theory and modern immunology. Cell Commun Signal 2024; 22:99. [PMID: 38317142 PMCID: PMC10845554 DOI: 10.1186/s12964-024-01505-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/28/2024] [Indexed: 02/07/2024] Open
Abstract
The changes in T regulatory cell (Treg) and T helper cell (Th) 17 ratios holds paramount importance in ensuring internal homeostasis and disease progression. Recently, novel subsets of Treg and Th17, namely IL-17-producing Treg and IL-10-producing Th17 have been identified. IL-17-producing Treg and IL-10-producing Th17 are widely considered as the intermediates during Treg/Th17 transformation. These "bi-functional" cells exhibit plasticity and have been demonstrated with important roles in multiple physiological functions and disease processes. Yin and Yang represent opposing aspects of phenomena according to the ancient Chinese philosophy "Yin-Yang" theory. Furthermore, Yin can transform into Yang, and vice versa, under specific conditions. This theory has been widely used to describe the contrasting functions of immune cells and molecules. Therefore, immune-activating populations (Th17, M1 macrophage, etc.) and immune overreaction (inflammation, autoimmunity) can be considered Yang, while immunosuppressive populations (Treg, M2 macrophage, etc.) and immunosuppression (tumor, immunodeficiency) can be considered Yin. However, another important connotation of "Yin-Yang" theory, the conversion between Yin and Yang, has been rarely documented in immune studies. The discovery of IL-17-producing Treg and IL-10-producing Th17 enriches the meaning of "Yin-Yang" theory and further promotes the relationship between ancient "Yin-Yang" theory and modern immunology. Besides, illustrating the functions of IL-17-producing Treg and IL-10-producing Th17 and mechanisms governing their differentiation provides valuable insights into the mechanisms underlying the dynamically changing statement of immune statement in health and diseases.
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Affiliation(s)
- Huantian Cui
- First School of Clinical Medicine, Yunnan University of Chinese Medicine, Kunming, 650500, China
| | - Ning Wang
- First School of Clinical Medicine, Yunnan University of Chinese Medicine, Kunming, 650500, China
| | - Hanzhou Li
- College of Integrative Chinese and Western Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yuhong Bian
- College of Integrative Chinese and Western Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Weibo Wen
- First School of Clinical Medicine, Yunnan University of Chinese Medicine, Kunming, 650500, China.
| | - Xiangying Kong
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Fudi Wang
- The First Affiliated Hospital, Institute of Translational Medicine, The Second Affiliated Hospital, School of Public Health, Cancer Center, State Key Laboratory of Experimental Hematology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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Santosh Nirmala S, Kayani K, Gliwiński M, Hu Y, Iwaszkiewicz-Grześ D, Piotrowska-Mieczkowska M, Sakowska J, Tomaszewicz M, Marín Morales JM, Lakshmi K, Marek-Trzonkowska NM, Trzonkowski P, Oo YH, Fuchs A. Beyond FOXP3: a 20-year journey unravelling human regulatory T-cell heterogeneity. Front Immunol 2024; 14:1321228. [PMID: 38283365 PMCID: PMC10811018 DOI: 10.3389/fimmu.2023.1321228] [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: 10/13/2023] [Accepted: 12/19/2023] [Indexed: 01/30/2024] Open
Abstract
The initial idea of a distinct group of T-cells responsible for suppressing immune responses was first postulated half a century ago. However, it is only in the last three decades that we have identified what we now term regulatory T-cells (Tregs), and subsequently elucidated and crystallized our understanding of them. Human Tregs have emerged as essential to immune tolerance and the prevention of autoimmune diseases and are typically contemporaneously characterized by their CD3+CD4+CD25high CD127lowFOXP3+ phenotype. It is important to note that FOXP3+ Tregs exhibit substantial diversity in their origin, phenotypic characteristics, and function. Identifying reliable markers is crucial to the accurate identification, quantification, and assessment of Tregs in health and disease, as well as the enrichment and expansion of viable cells for adoptive cell therapy. In our comprehensive review, we address the contributions of various markers identified in the last two decades since the master transcriptional factor FOXP3 was identified in establishing and enriching purity, lineage stability, tissue homing and suppressive proficiency in CD4+ Tregs. Additionally, our review delves into recent breakthroughs in innovative Treg-based therapies, underscoring the significance of distinct markers in their therapeutic utilization. Understanding Treg subsets holds the key to effectively harnessing human Tregs for immunotherapeutic approaches.
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Affiliation(s)
| | - Kayani Kayani
- Centre for Liver and Gastrointestinal Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Department of Academic Surgery, Queen Elizabeth Hospital, University of Birmingham, Birmingham, United Kingdom
- Department of Renal Surgery, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Mateusz Gliwiński
- Department of Medical Immunology, Medical University of Gdańsk, Gdańsk, Poland
| | - Yueyuan Hu
- Center for Regenerative Therapies Dresden, Technical University Dresden, Dresden, Germany
| | | | | | - Justyna Sakowska
- Department of Medical Immunology, Medical University of Gdańsk, Gdańsk, Poland
| | - Martyna Tomaszewicz
- Department of Medical Immunology, Medical University of Gdańsk, Gdańsk, Poland
| | | | - Kavitha Lakshmi
- Center for Regenerative Therapies Dresden, Technical University Dresden, Dresden, Germany
| | | | - Piotr Trzonkowski
- Department of Medical Immunology, Medical University of Gdańsk, Gdańsk, Poland
| | - Ye Htun Oo
- Centre for Liver and Gastrointestinal Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Liver Transplant and Hepatobiliary Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
- Birmingham Advanced Cellular Therapy Facility, University of Birmingham, Birmingham, United Kingdom
- Centre for Rare Diseases, European Reference Network - Rare Liver Centre, Birmingham, United Kingdom
| | - Anke Fuchs
- Center for Regenerative Therapies Dresden, Technical University Dresden, Dresden, Germany
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Liu B, Wang Y, Han G, Zhu M. Tolerogenic dendritic cells in radiation-induced lung injury. Front Immunol 2024; 14:1323676. [PMID: 38259434 PMCID: PMC10800505 DOI: 10.3389/fimmu.2023.1323676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
Radiation-induced lung injury is a common complication associated with radiotherapy. It is characterized by early-stage radiation pneumonia and subsequent radiation pulmonary fibrosis. However, there is currently a lack of effective therapeutic strategies for radiation-induced lung injury. Recent studies have shown that tolerogenic dendritic cells interact with regulatory T cells and/or regulatory B cells to stimulate the production of immunosuppressive molecules, control inflammation, and prevent overimmunity. This highlights a potential new therapeutic activity of tolerogenic dendritic cells in managing radiation-induced lung injury. In this review, we aim to provide a comprehensive overview of tolerogenic dendritic cells in the context of radiation-induced lung injury, which will be valuable for researchers in this field.
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Affiliation(s)
| | - Yilong Wang
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | | | - Maoxiang Zhu
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
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Schülke S, Gilles S, Jirmo AC, Mayer JU. Tissue-specific antigen-presenting cells contribute to distinct phenotypes of allergy. Eur J Immunol 2023; 53:e2249980. [PMID: 36938688 DOI: 10.1002/eji.202249980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/19/2023] [Accepted: 03/13/2023] [Indexed: 03/21/2023]
Abstract
Antigen-presenting cells (APCs) are critical cells bridging innate and adaptive immune responses by taking up, processing, and presenting antigens to naïve T cells. At steady state, APCs thus control both tissue homeostasis and the induction of tolerance. In allergies however, APCs drive a Th2-biased immune response that is directed against otherwise harmless antigens from the environment. The main types of APCs involved in the induction of allergy are dendritic cells, monocytes, and macrophages. However, these cell types can be further divided into local, tissue-specific populations that differ in their phenotype, migratory capacity, T-cell activating potential, and production of effector molecules. Understanding if distinct populations of APCs contribute to either tissue-specific immune tolerance, allergen sensitization, or allergic inflammation will allow us to better understand disease pathology and develop targeted treatment options for different stages of allergic disease. Therefore, this review describes the main characteristics, phenotypes, and effector molecules of the APCs involved in the induction of allergen-specific Th2 responses in affected barrier sites, such as the skin, nose, lung, and gastrointestinal tract. Furthermore, we highlight open questions that remain to be addressed to fully understand the contribution of different APCs to allergic disease.
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Affiliation(s)
- Stefan Schülke
- Vice President´s Research Group: Molecular Allergology, Paul-Ehrlich-Institut, Langen (Hesse), Germany
| | - Stefanie Gilles
- Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
| | - Adan C Jirmo
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany
| | - Johannes U Mayer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
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8
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Guo C, Chi H. Immunometabolism of dendritic cells in health and disease. Adv Immunol 2023; 160:83-116. [PMID: 38042587 PMCID: PMC11086980 DOI: 10.1016/bs.ai.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2023]
Abstract
Dendritic cells (DCs) are crucial mediators that bridge the innate and adaptive immune responses. Cellular rewiring of metabolism is an emerging regulator of the activation, migration, and functional specialization of DC subsets in specific microenvironments and immunological conditions. DCs undergo metabolic adaptation to exert immunogenic or tolerogenic effects in different contexts. Also, beyond their intracellular metabolic and signaling roles, metabolites and nutrients mediate the intercellular crosstalk between DCs and other cell types, and such crosstalk orchestrates DC function and immune responses. Here, we provide a comprehensive review of the metabolic regulation of DC biology in various contexts and summarize the current understanding of such regulation in directing immune homeostasis and inflammation, specifically with respect to infections, autoimmunity, tolerance, cancer, metabolic diseases, and crosstalk with gut microbes. Understanding context-specific metabolic alterations in DCs may identify mechanisms for physiological and pathological functions of DCs and yield potential opportunities for therapeutic targeting of DC metabolism in many diseases.
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Affiliation(s)
- Chuansheng Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States.
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9
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Ni H, Chen Y. Differentiation, regulation and function of regulatory T cells in non-lymphoid tissues and tumors. Int Immunopharmacol 2023; 121:110429. [PMID: 37327512 DOI: 10.1016/j.intimp.2023.110429] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/18/2023]
Abstract
Regulatory T cells (Tregs) play a substantial role in inhibiting excessive immune response. A large number of studies have focused on the tissue homeostasis maintenance and remodeling characteristics of Tregs in non-lymphoid tissues, such as the skin, colon, lung, brain, muscle, and adipose tissues. Herein, we overview the kinetics of Treg migration to non-lymphoid tissues and adaptation to the specific tissue microenvironment through the development of tissue-specific chemokine receptors, transcription factors, and phenotypes. Additionally, tumor-infiltrating Tregs (Ti-Tregs) play an important role in tumor generation and immunotherapy resistance. The phenotypes of Ti-Tregs are related to the histological location of the tumor and there is a large overlap between the transcripts of Ti-Tregs and those of tissue-specific Tregs. We recapitulate the molecular underpinnings of tissue-specific Tregs, which might shed new light on Treg-based therapeutic targets and biomarkers for inflammatory diseases and cancer.
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Affiliation(s)
- Hongbo Ni
- The First Clinical Medicine Faculty, China Medical University, Shenyang 110001, China
| | - Yinghan Chen
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110001, China.
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10
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Abstract
PURPOSE OF REVIEW This review addresses recent progress in our understanding of the role of regulatory T (Treg) cells in enforcing immune tolerance and tissue homeostasis in the lung at steady state and in directing the immune response in asthmatic lung inflammation. RECENT FINDINGS Regulatory T cells regulate the innate and adaptive immune responses at steady state to enforce immune tolerance in lung tissues at steady state and their control of the allergic inflammatory responses induced by allergens. This regulatory function can break down in the context of chronic asthmatic airway inflammation such that the lung tissue Treg cells become skewed towards a pathogenic phenotype that aggravates and perpetuates disease. Subversion of lung tissue Treg cell function involves their upregulation of Notch4 expression, which in turn acts to amplify T helper type 2 and type 17 and innate lymphoid cell type 2 responses in the airways. SUMMARY A dual role for Treg cells has emerged both as immune regulators but also a potential disease effectors in asthma, with implications for disease therapy.
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Affiliation(s)
- Hani Harb
- Institute for Medical Microbiology and Virology, University Hospital Dresden, Technical University Dresden, Germany
| | - Talal A Chatila
- Division of Immunology, Boston Children’s Hospital, Department of Pediatrics, Harvard Medical School, Boston, USA
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11
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Bourque J, Hawiger D. Life and death of tolerogenic dendritic cells. Trends Immunol 2023; 44:110-118. [PMID: 36599743 PMCID: PMC9892261 DOI: 10.1016/j.it.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 01/03/2023]
Abstract
In contrast to conventional dendritic cells (cDCs) that are constantly exposed to microbial signals at anatomical barriers, cDCs in systemic lymphoid organs are sheltered from proinflammatory stimulation in the steady state but respond to inflammatory signals by gaining specific immune functions in a process referred to as maturation. Recent findings show that, during maturation, a population of systemic tolerogenic cDCs undergoes an acute tumor necrosis factor α (TNFα)-mediated cell death, resulting in the loss of tolerance-inducing capacity. This tolerogenic cDC population is restored upon return to the homeostatic baseline. We propose that such a dynamic reshaping of cDC populations becomes the foundation of a novel framework for maintaining tolerance at the steady state while being conducive to unhampered initiation of immune responses under proinflammatory conditions.
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Affiliation(s)
- Jessica Bourque
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St Louis, MO, USA
| | - Daniel Hawiger
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St Louis, MO, USA.
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Wang C, Nistala R, Cao M, Li DP, Pan Y, Golzy M, Cui Y, Liu Z, Kang X. Repair of Limb Ischemia Is Dependent on Hematopoietic Stem Cell Specific-SHP-1 Regulation of TGF-β1. Arterioscler Thromb Vasc Biol 2023; 43:92-108. [PMID: 36412197 PMCID: PMC10037747 DOI: 10.1161/atvbaha.122.318205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Hematopoietic stem cell (HSC) therapy has shown promise for tissue regeneration after ischemia. Therefore, there is a need to understand mechanisms underlying endogenous HSCs activation in response to ischemic stress and coordination of angiogenesis and repair. SHP-1 plays important roles in HSC quiescence and differentiation by regulation of TGF-β1 signaling. TGF-β1 promotes angiogenesis by stimulating stem cells to secrete growth factors to initiate the formation of blood vessels and later aid in their maturation. We propose that SHP-1 responds to ischemia stress in HSC and progenitor cells (HSPC) via regulation of TGF-β1. METHODS A mouse hind limb ischemia model was used. Local blood perfusion in the limbs was determined using laser doppler perfusion imaging. The number of positive blood vessels per square millimeter, as well as blood vessel diameter (μm) and area (μm2), were calculated. Hematopoietic cells were analyzed using flow cytometry. The bone marrow transplantation assay was performed to measure HSC reconstitution. RESULTS After femoral artery ligation, TGF-β1 was initially decreased in the bone marrow by day 3 of ischemia, followed by an increase on day 7. This pattern was opposite to that in the peripheral blood, which is concordant with the response of HSC to ischemic stress. In contrast, SHP-1 deficiency in HSC is associated with irreversible activation of HSPCs in the bone marrow and increased circulating HSPCs in peripheral blood following limb ischemia. In addition, there was augmented auto-induction of TGF-β1 and sustained inactivation of SHP-1-Smad2 signaling, which impacted TGF-β1 expression in HSPCs in circulation. Importantly, restoration of normal T GF-β1 oscillations helped in the recovery of limb repair and function. CONCLUSIONS HSPC-SHP-1-mediated regulation of TGF-β1 in both bone marrow and peripheral blood is required for a normal response to ischemic stress.
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Affiliation(s)
- Chen Wang
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - Ravi Nistala
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
- Division of Nephrology (R.N.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - Min Cao
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - De-Pei Li
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - Yi Pan
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - Mojgan Golzy
- Department of Family and Community Medicine - Biostatistics Unit, School of Medicine, University of Missouri, Columbia (M.G.)
| | - Yuqi Cui
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
- Division of Cardiovascular Medicine (Y.C., Z.L.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - Zhenguo Liu
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
- Division of Cardiovascular Medicine (Y.C., Z.L.), Department of Medicine, University of Missouri School of Medicine, Columbia
| | - XunLei Kang
- Center for Precision Medicine (C.W., R.N., M.C., D.-P.L., Y.P., Y.C., Z.L., X.K.), Department of Medicine, University of Missouri School of Medicine, Columbia
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13
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Xu J, Xiao N, Zhou D, Xie L. Disease tolerance: a protective mechanism of lung infections. Front Cell Infect Microbiol 2023; 13:1037850. [PMID: 37207185 PMCID: PMC10189053 DOI: 10.3389/fcimb.2023.1037850] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 03/30/2023] [Indexed: 05/21/2023] Open
Abstract
Resistance and tolerance are two important strategies employed by the host immune response to defend against pathogens. Multidrug-resistant bacteria affect the resistance mechanisms involved in pathogen clearance. Disease tolerance, defined as the ability to reduce the negative impact of infection on the host, might be a new research direction for the treatment of infections. The lungs are highly susceptible to infections and thus are important for understanding host tolerance and its precise mechanisms. This review focuses on the factors that induce lung disease tolerance, cell and molecular mechanisms involved in tissue damage control, and the relationship between disease tolerance and sepsis immunoparalysis. Understanding the exact mechanism of lung disease tolerance could allow better assessment of the immune status of patients and provide new ideas for the treatment of infections.
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Affiliation(s)
- Jianqiao Xu
- College of Pulmonary & Critical Care Medicine, 8th Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Nan Xiao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
- *Correspondence: Dongsheng Zhou, ; Lixin Xie,
| | - Lixin Xie
- College of Pulmonary & Critical Care Medicine, 8th Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
- *Correspondence: Dongsheng Zhou, ; Lixin Xie,
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14
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Mansouri S, Gogoi H, Patel S, Katikaneni DS, Singh A, Aybar-Torres A, de Lartigue G, Jin L. MPYS Modulates Fatty Acid Metabolism and Immune Tolerance at Homeostasis Independent of Type I IFNs. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:2114-2132. [PMID: 36261171 PMCID: PMC9679991 DOI: 10.4049/jimmunol.2200158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/15/2022] [Indexed: 01/04/2023]
Abstract
MPYS/STING (stimulator of IFN genes) senses cyclic dinucleotides (CDNs), generates type I IFNs, and plays a critical role in infection, inflammation, and cancer. In this study, analyzing genotype and haplotype data from the 1000 Genomes Project, we found that the R71H-G230A-R293Q (HAQ) MPYS allele frequency increased 57-fold in East Asians compared with sub-Saharan Africans. Meanwhile, the G230A-R293Q (AQ) allele frequency decreased by 98% in East Asians compared with sub-Saharan Africans. We propose that the HAQ and AQ alleles underwent a natural selection during the out-of-Africa migration. We used mouse models of HAQ and AQ to investigate the underlying mechanism. We found that the mice carrying the AQ allele, which disappeared in East Asians, had normal CDN-type I IFN responses. Adult AQ mice, however, had less fat mass than did HAQ or wild-type mice on a chow diet. AQ epididymal adipose tissue had increased regulatory T cells and M2 macrophages with protein expression associated with enhanced fatty acid oxidation. Conditional knockout mice and adoptive cell transfer indicate a macrophage and regulatory T cell-intrinsic role of MPYS in fatty acid metabolism. Mechanistically, AQ/IFNAR1-/- mice had a similar lean phenotype as for the AQ mice. MPYS intrinsic tryptophan fluorescence revealed that the R71H change increased MPYS hydrophilicity. Lastly, we found that the second transmembrane (TM) and the TM2-TM3 linker region of MPYS interact with activated fatty acid, fatty acyl-CoA. In summary, studying the evolution of the human MPYS gene revealed an MPYS function in modulating fatty acid metabolism that may be critical during the out-of-Africa migration.
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Affiliation(s)
- Samira Mansouri
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Himanshu Gogoi
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Seema Patel
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Divya S. Katikaneni
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Arashdeep Singh
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL; and
- Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL
| | - Alexandra Aybar-Torres
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Guillaume de Lartigue
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL; and
- Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL
| | - Lei Jin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL
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15
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Furlong-Silva J, Cook PC. Fungal-mediated lung allergic airway disease: The critical role of macrophages and dendritic cells. PLoS Pathog 2022; 18:e1010608. [PMID: 35834490 PMCID: PMC9282651 DOI: 10.1371/journal.ppat.1010608] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Fungi are abundant in the environment, causing our lungs to be constantly exposed to a diverse range of species. While the majority of these are cleared effectively in healthy individuals, constant exposure to spores (especially Aspergillus spp.) can lead to the development of allergic inflammation that underpins and worsen diseases such as asthma. Despite this, the precise mechanisms that underpin the development of fungal allergic disease are poorly understood. Innate immune cells, such as macrophages (MΦs) and dendritic cells (DCs), have been shown to be critical for mediating allergic inflammation to a range of different allergens. This review will focus on the crucial role of MΦ and DCs in mediating antifungal immunity, evaluating how these immune cells mediate allergic inflammation within the context of the lung environment. Ultimately, we aim to highlight important future research questions that will lead to novel therapeutic strategies for fungal allergic diseases.
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Affiliation(s)
- Julio Furlong-Silva
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Peter Charles Cook
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
- * E-mail:
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16
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Meng F, Wang J, Yeo Y. Nucleic acid and oligonucleotide delivery for activating innate immunity in cancer immunotherapy. J Control Release 2022; 345:586-600. [PMID: 35351528 PMCID: PMC9133138 DOI: 10.1016/j.jconrel.2022.03.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 12/17/2022]
Abstract
A group of nucleic acids and oligonucleotides play various roles in the innate immune system. They can stimulate pattern recognition receptors to activate innate immune cells, encode immunostimulatory proteins or peptides, or silence specific genes to block negative regulators of immune cells. Given the limitations of current cancer immunotherapy, there has been increasing interest in harnessing innate immune responses by nucleic acids and oligonucleotides. The poor biopharmaceutical properties of nucleic acids and oligonucleotides make it critical to use carriers that can protect them in circulation, retain them in the tumor microenvironment, and bring them to intracellular targets. Therefore, various gene carriers have been repurposed to deliver nucleic acids and oligonucleotides for cancer immunotherapy and improve their safety and activity. Here, we review recent studies that employed carriers to enhance the functions of nucleic acids and oligonucleotides and overall immune responses to cancer, and discuss remaining challenges and future opportunities in the development of nucleic acid-based immunotherapeutics.
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Affiliation(s)
- Fanfei Meng
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Jianping Wang
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Weldon School of Biomedical Engineering, Purdue University, 206 S Martin Jischke Dr., West Lafayette, IN 47907, USA.
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17
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Komlósi ZI, van de Veen W, Kovács N, Szűcs G, Sokolowska M, O'Mahony L, Akdis M, Akdis CA. Cellular and molecular mechanisms of allergic asthma. Mol Aspects Med 2021; 85:100995. [PMID: 34364680 DOI: 10.1016/j.mam.2021.100995] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 12/21/2022]
Abstract
Asthma is a chronic disease of the airways, which affects more than 350 million people worldwide. It is the most common chronic disease in children, affecting at least 30 million children and young adults in Europe. Asthma is a complex, partially heritable disease with a marked heterogeneity. Its development is influenced both by genetic and environmental factors. The most common, as well as the most well characterized subtype of asthma is allergic eosinophilic asthma, which is characterized by a type 2 airway inflammation. The prevalence of asthma has substantially increased in industrialized countries during the last 60 years. The mechanisms underpinning this phenomenon are incompletely understood, however increased exposure to various environmental pollutants probably plays a role. Disease inception is thought to be enabled by a disadvantageous shift in the balance between protective and harmful lifestyle and environmental factors, including exposure to protective commensal microbes versus infection with pathogens, collectively leading to airway epithelial cell damage and disrupted barrier integrity. Epithelial cell-derived cytokines are one of the main drivers of the type 2 immune response against innocuous allergens, ultimately leading to infiltration of lung tissue with type 2 T helper (TH2) cells, type 2 innate lymphoid cells (ILC2s), M2 macrophages and eosinophils. This review outlines the mechanisms responsible for the orchestration of type 2 inflammation and summarizes the novel findings, including but not limited to dysregulated epithelial barrier integrity, alarmin release and innate lymphoid cell stimulation.
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Affiliation(s)
- Zsolt I Komlósi
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad Sqr. 4, 1089, Budapest, Hungary.
| | - Willem van de Veen
- Swiss Institute of Allergy and Asthma Research (SIAF), Hermann-Burchard Strasse 9, CH7265, Davos Wolfgand, Switzerland; Christine Kühne - Center for Allergy Research and Education, Davos, Switzerland
| | - Nóra Kovács
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad Sqr. 4, 1089, Budapest, Hungary; Lung Health Hospital, Munkácsy Mihály Str. 70, 2045, Törökbálint, Hungary
| | - Gergő Szűcs
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad Sqr. 4, 1089, Budapest, Hungary; Department of Pulmonology, Semmelweis University, Tömő Str. 25-29, 1083, Budapest, Hungary
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), Hermann-Burchard Strasse 9, CH7265, Davos Wolfgand, Switzerland; Christine Kühne - Center for Allergy Research and Education, Davos, Switzerland
| | - Liam O'Mahony
- Department of Medicine and School of Microbiology, APC Microbiome Ireland, University College Cork, Ireland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), Hermann-Burchard Strasse 9, CH7265, Davos Wolfgand, Switzerland; Christine Kühne - Center for Allergy Research and Education, Davos, Switzerland
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), Hermann-Burchard Strasse 9, CH7265, Davos Wolfgand, Switzerland; Christine Kühne - Center for Allergy Research and Education, Davos, Switzerland
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18
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Mansouri S, Gogoi H, Pipkin M, Machuca TN, Emtiazjoo AM, Sharma AK, Jin L. In vivo reprogramming of pathogenic lung TNFR2 + cDC2s by IFNβ inhibits HDM-induced asthma. Sci Immunol 2021; 6:6/61/eabi8472. [PMID: 34244314 DOI: 10.1126/sciimmunol.abi8472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 05/21/2021] [Indexed: 01/28/2023]
Abstract
Asthma is a common inflammatory lung disease with no known cure. Previously, we uncovered a lung TNFR2+ conventional DC2 subset (cDC2s) that induces regulatory T cells (Tregs) maintaining lung tolerance at steady state but promotes TH2 response during house dust mite (HDM)-induced asthma. Lung IFNβ is essential for TNFR2+ cDC2s-mediated lung tolerance. Here, we showed that exogenous IFNβ reprogrammed TH2-promoting pathogenic TNFR2+ cDC2s back to tolerogenic DCs, alleviating eosinophilic asthma and preventing asthma exacerbation. Mechanistically, inhaled IFNβ, not IFNα, activated ERK2 signaling in pathogenic lung TNFR2+ cDC2s, leading to enhanced fatty acid oxidation (FAO) and lung Treg induction. Last, human IFNβ reprogrammed pathogenic human lung TNFR2+ cDC2s from patients with emphysema ex vivo. Thus, we identified an IFNβ-specific ERK2-FAO pathway that might be harnessed for DC therapy.
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Affiliation(s)
- Samira Mansouri
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Himanshu Gogoi
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Mauricio Pipkin
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, University of Florida, Gainesville, FL 32610, USA
| | - Tiago N Machuca
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, University of Florida, Gainesville, FL 32610, USA
| | - Amir M Emtiazjoo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Ashish K Sharma
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, University of Florida, Gainesville, FL 32610, USA
| | - Lei Jin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, USA.
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19
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Sohn M, Na HY, Shin HS, Ryu SH, Park S, In H, Choi W, Park JS, Hwang S, Chu MK, Park CG. Global Gene Expression of T Cells Is Differentially Regulated by Peritoneal Dendritic Cell Subsets in an IL-2 Dependent Manner. Front Immunol 2021; 12:648348. [PMID: 34079542 PMCID: PMC8165281 DOI: 10.3389/fimmu.2021.648348] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/29/2021] [Indexed: 12/23/2022] Open
Abstract
Dendritic cells (DCs) in peripheral tissues may have a unique role to regulate innate and adaptive immune responses to antigens that enter the tissues. Peritoneal cavity is the body compartment surrounding various tissues and organs and housing diverse immune cells. Here, we investigated the specialized features of classical DC (cDC) subsets following the intraperitoneal injection of a model antigen ovalbumin (OVA). Peritoneal cDC1s were superior to cDC2s in activating OVA-specific CD8 T cells, while both cDCs were similar in stimulating OVA-specific CD4 T cells. Each peritoneal cDC subset differentially regulated the homing properties of CD8 T cells. CD8 T cells stimulated by cDC1s displayed a higher level of lung-homing receptor CCR4, whereas those stimulated by cDC2s prominently expressed various homing receptors including gut-homing molecules CCR9 and α4β7. Also, we found that cDC1s played a dominating role over cDC2s in controlling the overall gene expression of CD8 T cells. Soluble factor(s) emanating from CD8 T cells stimulated by peritoneal cDC1s were responsible for mediating this dominance of cDC1s, and we identified IL-2 as a soluble factor regulating the global gene expression of T cells. Collectively, our study indicates that different peritoneal cDC subsets effectively diversify T cell responses by altering the level of cytokines, such as IL-2, in the milieu.
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Affiliation(s)
- Moah Sohn
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Hye Young Na
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Soo Shin
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Seul Hye Ryu
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Sejung Park
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyunju In
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Wanho Choi
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Soo Park
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Soomin Hwang
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Chae Gyu Park
- Laboratory of Immunology, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea.,Therapeutic Antibody Research Center, GENUV Inc., Seoul, South Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea
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20
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Galletti JG, de Paiva CS. Age-related changes in ocular mucosal tolerance: Lessons learned from gut and respiratory tract immunity. Immunology 2021; 164:43-56. [PMID: 33837534 DOI: 10.1111/imm.13338] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/28/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022] Open
Abstract
The ocular surface is the part of the visual system directly exposed to the environment, and it comprises the cornea, the first refractive tissue layer and its surrounding structures. The ocular surface has evolved to keep the cornea smooth and wet, a prerequisite for proper sight, and also protected. To this aim, the ocular surface is a bona fide mucosal niche with an immune system capable of fighting against dangerous pathogens. However, due to the potential harmful effects of uncontrolled inflammation, the ocular surface has several mechanisms to keep the immune response in check. Specifically, the ocular surface is maintained inflammation-free and functional by a particular form of peripheral tolerance known as mucosal tolerance, markedly different from the immune privilege of intraocular structures. Remarkably, conjunctival tolerance is akin to the oral and respiratory tolerance mechanisms found in the gut and airways, respectively. And also similarly, this form of immunoregulation in the eye is affected by ageing just as it is in the digestive and respiratory tracts. With ageing comes an increased prevalence of immune-based ocular surface disorders, which could be related to an age-related impairment of conjunctival tolerance. The purpose of this review was to summarize the present knowledge of ocular mucosal tolerance and how it is affected by the ageing process in the light of the current literature on mucosal immunoregulation of the gut and airways.
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Affiliation(s)
- Jeremias G Galletti
- Innate Immunity Laboratory, Institute of Experimental Medicine (IMEX), National Academy of Medicine/CONICET, Buenos Aires, Argentina
| | - Cintia S de Paiva
- Department of Ophthalmology, Ocular Surface Center, Cullen Eye Institute, Baylor College of Medicine, Houston, TX, USA
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21
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Abstract
As the professional antigen-presenting cells of the immune system, dendritic cells (DCs) sense the microenvironment and shape the ensuing adaptive immune response. DCs can induce both immune activation and immune tolerance according to the peripheral cues. Recent work has established that DCs comprise several phenotypically and functionally heterogeneous subsets that differentially regulate T lymphocyte differentiation. This review summarizes both mouse and human DC subset phenotypes, development, diversification, and function. We focus on advances in our understanding of how different DC subsets regulate distinct CD4+ T helper (Th) cell differentiation outcomes, including Th1, Th2, Th17, T follicular helper, and T regulatory cells. We review DC subset intrinsic properties, local tissue microenvironments, and other immune cells that together determine Th cell differentiation during homeostasis and inflammation.
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Affiliation(s)
- Xiangyun Yin
- Department of Laboratory Medicine and Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA;
| | - Shuting Chen
- Department of Laboratory Medicine and Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA;
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine and Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA;
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22
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Richmond BW, Mansouri S, Serezani A, Novitskiy S, Blackburn JB, Du RH, Fuseini H, Gutor S, Han W, Schaff J, Vasiukov G, Xin MK, Newcomb DC, Jin L, Blackwell TS, Polosukhin VV. Monocyte-derived dendritic cells link localized secretory IgA deficiency to adaptive immune activation in COPD. Mucosal Immunol 2021; 14:431-442. [PMID: 32968197 PMCID: PMC7946625 DOI: 10.1038/s41385-020-00344-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/04/2020] [Accepted: 08/09/2020] [Indexed: 02/04/2023]
Abstract
Although activation of adaptive immunity is a common pathological feature of chronic obstructive pulmonary disease (COPD), particularly during later stages of the disease, the underlying mechanisms are poorly understood. In small airways of COPD patients, we found that localized disruption of the secretory immunoglobulin A (SIgA)-containing mucosal immunobarrier correlated with lymphocyte accumulation in airway walls and development of tertiary lymphoid structures (TLS) around small airways. In SIgA-deficient mice, we observed bacterial invasion into the airway epithelial barrier with lymphocytic infiltration and TLS formation, which correlated with the progression of COPD-like pathology with advanced age. Depletion of either CD4+ or CD8+ T lymphocytes reduced the severity of emphysema in SIgA-deficient mice, indicating that adaptive immune activation contributes to progressive lung destruction. Further studies revealed that lymphocyte infiltration into the lungs of SIgA-deficient mice was dependent on monocyte-derived dendritic cells (moDCs), which were recruited through a CCR2-dependent mechanism in response to airway bacteria. Consistent with these results, we found that moDCs were increased in lungs of COPD patients, along with CD4+ and CD8+ effector memory T cells. Together, these data indicate that endogenous bacteria in SIgA-deficient airways orchestrate a persistent and pathologic T lymphocyte response through monocyte recruitment and moDC differentiation.
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Affiliation(s)
- Bradley W. Richmond
- grid.413806.8Department of Veterans Affairs Medical Center, Nashville, TN USA ,grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Samira Mansouri
- grid.15276.370000 0004 1936 8091Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL USA
| | - Ana Serezani
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Sergey Novitskiy
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Jessica B. Blackburn
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Rui-Hong Du
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Hubaida Fuseini
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Sergey Gutor
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Wei Han
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Jacob Schaff
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Georgii Vasiukov
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Matthew K. Xin
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Dawn C. Newcomb
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Lei Jin
- grid.15276.370000 0004 1936 8091Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL USA
| | - Timothy S. Blackwell
- grid.413806.8Department of Veterans Affairs Medical Center, Nashville, TN USA ,grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
| | - Vasiliy V. Polosukhin
- grid.152326.10000 0001 2264 7217Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN USA
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