1
|
Preet Kaur A, Alice A, Crittenden MR, Gough MJ. The role of dendritic cells in radiation-induced immune responses. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 378:61-104. [PMID: 37438021 DOI: 10.1016/bs.ircmb.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Dendritic cells perform critical functions in bridging innate and adaptive immunity. Their ability to sense adjuvant signals in their environment, migrate on maturation, and cross-present cell-associated antigens enables these cells to carry antigen from tissue sites to lymph nodes, and thereby prime naïve T cells that cannot enter tissues. Despite being an infrequent cell type in tumors, we discuss how dendritic cells impact the immune environment of tumors and their response to cancer therapies. We review how radiation therapy of tumors can impact dendritic cells, through transfer of cell associated antigens to dendritic cells and the release of endogenous adjuvants, resulting in increased antigen presentation in the tumor-draining lymph nodes. We explore how tumor specific factors can result in negative regulation of dendritic cell function in the tumor, and the impact of direct radiation exposure to dendritic cells in the treatment field. These data suggest an important role for dendritic cell subpopulations in activating new T cell responses and boosting existing T cell responses to tumor associated antigens in tumor draining lymph nodes following radiation therapy. It further justifies a focus on the needs of the lymph node T cells to improve systemic anti-immunity following radiation therapy.
Collapse
Affiliation(s)
- Aanchal Preet Kaur
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Center, Providence Portland Medical Center, Portland, OR, United States
| | - Alejandro Alice
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Center, Providence Portland Medical Center, Portland, OR, United States
| | - Marka R Crittenden
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Center, Providence Portland Medical Center, Portland, OR, United States; The Oregon Clinic, Portland, OR, United States
| | - Michael J Gough
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Center, Providence Portland Medical Center, Portland, OR, United States.
| |
Collapse
|
2
|
Mishra GP, Jha A, Ahad A, Sen K, Sen A, Podder S, Prusty S, Biswas VK, Gupta B, Raghav SK. Epigenomics of conventional type-I dendritic cells depicted preferential control of TLR9 versus TLR3 response by NCoR1 through differential IRF3 activation. Cell Mol Life Sci 2022; 79:429. [PMID: 35849243 PMCID: PMC9293861 DOI: 10.1007/s00018-022-04424-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/28/2022] [Accepted: 06/13/2022] [Indexed: 11/26/2022]
Abstract
Tight control of gene regulation in dendritic cells (DCs) is important to mount pathogen specific immune responses. Apart from transcription factor binding, dynamic regulation of enhancer activity through global transcriptional repressors like Nuclear Receptor Co-repressor 1 (NCoR1) plays a major role in fine-tuning of DC responses. However, how NCoR1 regulates enhancer activity and gene expression in individual or multiple Toll-like receptor (TLR) activation in DCs is largely unknown. In this study, we did a comprehensive epigenomic analysis of murine conventional type-I DCs (cDC1) across different TLR ligation conditions. We profiled gene expression changes along with H3K27ac active enhancers and NCoR1 binding in the TLR9, TLR3 and combined TLR9 + TLR3 activated cDC1. We observed spatio-temporal activity of TLR9 and TLR3 specific enhancers regulating signal specific target genes. Interestingly, we found that NCoR1 differentially controls the TLR9 and TLR3-specific responses. NCoR1 depletion specifically enhanced TLR9 responses as evident from increased enhancer activity as well as TLR9-specific gene expression, whereas TLR3-mediated antiviral response genes were negatively regulated. We validated that NCoR1 KD cDC1 showed significantly decreased TLR3 specific antiviral responses through decreased IRF3 activation. In addition, decreased IRF3 binding was observed at selected ISGs leading to their decreased expression upon NCoR1 depletion. Consequently, the NCoR1 depleted cDC1 showed reduced Sendai Virus (SeV) clearance and cytotoxic potential of CD8+ T cells upon TLR3 activation. NCoR1 directly controls the majority of these TLR specific enhancer activity and the gene expression. Overall, for the first time, we revealed NCoR1 mediates transcriptional control towards TLR9 as compared to TLR3 in cDC1.
Collapse
Affiliation(s)
- Gyan Prakash Mishra
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India
| | - Atimukta Jha
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Abdul Ahad
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
| | - Kaushik Sen
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, 121001, India
| | - Aishwarya Sen
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, 121001, India
| | - Sreeparna Podder
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India
| | - Subhasish Prusty
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, 121001, India
| | - Viplov Kumar Biswas
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India
| | - Bhawna Gupta
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India
| | - Sunil Kumar Raghav
- Immuno-Genomics and Systems Biology Laboratory, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India.
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India.
- Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
- Regional Centre for Biotechnology, Faridabad, Haryana, 121001, India.
| |
Collapse
|
3
|
TLR3-driven IFN-β antagonizes STAT5-activating cytokines and suppresses innate type 2 response in the lung. J Allergy Clin Immunol 2022; 149:1044-1059.e5. [PMID: 34428519 PMCID: PMC8859010 DOI: 10.1016/j.jaci.2021.07.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 07/16/2021] [Accepted: 07/29/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Group 2 innate lymphoid cells (ILC2s) are involved in type 2 immune responses in mucosal organs and are associated with various allergic diseases in humans. Studies are needed to understand the molecules and pathways that control ILC2s. OBJECTIVE The aims of this study were to develop a mouse model that limits the innate type 2 immune response in the lung and to investigate the immunologic mechanisms involved in regulation of lung ILC2s. METHODS Naive BALB/c mice were administered various Toll-like receptor agonists and exposed intranasally to the fungal allergen Alternaria alternata. The mechanisms were investigated using gene knockout mice as well as cultures of lung cells and isolated lung ILC2s. RESULTS Polyinosinic-polycytidylic acid, or poly (I:C), effectively inhibited innate type 2 response to A alternata. Poly (I:C) promoted production of IFNα, -β, and -γ, and its inhibitory effects were dependent on the IFN-α/β receptor pathway. IFN-β was 100 times more potent than IFN-α at inhibiting type 2 cytokine production by lung ILC2s. Signal transducer and activator of transcription 5 (STAT5)-activating cytokines, including IL-2, IL-7, and thymic stromal lymphopoietin, but not IL-33, promoted survival and proliferation of lung ILC2s in vitro, while IFN-β blocked these effects. Expression of the transcription factor GATA3, which is critical for differentiation and maintenance of ILC2s, was inhibited by IFN-β. CONCLUSIONS IFN-β blocks the effects of STAT5-activating cytokines on lung ILC2s and inhibits their survival and effector functions. Administration of IFN-β may provide a new strategy to treat diseases involving ILC2s.
Collapse
|
4
|
Badillo-Godinez O, Pedroza-Saavedra A, Valverde-Garduño V, Bermudez-Morales V, Maldonado-Gama M, Leon-Letelier R, Bonifaz LC, Esquivel-Guadarrama F, Gutierrez-Xicotencatl L. Induction of Therapeutic Protection in an HPV16-Associated Mouse Tumor Model Through Targeting the Human Papillomavirus-16 E5 Protein to Dendritic Cells. Front Immunol 2021; 12:593161. [PMID: 33717073 PMCID: PMC7947241 DOI: 10.3389/fimmu.2021.593161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 01/14/2021] [Indexed: 01/05/2023] Open
Abstract
HPV E5 is an oncoprotein mainly expressed in premalignant lesions, which makes it an important target for a vaccine to prevent or cure cervical cancer (CC). In this study, we evaluated whether E5 targeted to DEC-205, present in dendritic cells (DCs), could induce a therapeutic protection against HPV16-induced tumor cells in a mouse model. The HPV-16 E5 (16E5) protein was cross-linked to a monoclonal antibody (mAb) specific to mouse DEC-205 (anti-DEC-205:16E5) or to an isotype control mAb (isotype:16E5). Rotavirus VP6 was cross-linked to the mouse anti-DEC-205 mAb (anti-DEC-205:VP6) as a non-specific antigen control. BALB/c mice were inoculated subcutaneously (s.c.) with the 16E5-expressing BMK-16/myc tumor cells, and 7 and 14 days later the mice were immunized s.c. with the conjugates, free 16E5 or PBS in the presence of adjuvant. Tumor growth was monitored to evaluate protection. A strong protective immune response against the tumor cells was induced when the mice were inoculated with the anti-DEC-205:16E5 conjugate, since 70% of the mice controlled the tumor growth and survived, whereas the remaining 30% developed tumors and died by day 72. In contrast, 100% of the mice in the control groups died by day 30. The anti-DEC-205:16E5 conjugate was found to induce 16E5-specific memory T cells, with a Th1/Th17 profile. Both CD4+ and CD8+ T cells contributed to the observed protection. Finally, treating mice that had developed tumors with an anti-PD-1 mAb, delayed the tumor growth for more than 20 days. These results show that targeting 16E5 to DEC-205, alone or combined with an immune checkpoint blockade, could be a promising protocol for the treatment of the early stages of HPV-associated cancer.
Collapse
Affiliation(s)
- Oscar Badillo-Godinez
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Adolfo Pedroza-Saavedra
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Veronica Valverde-Garduño
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Victor Bermudez-Morales
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Minerva Maldonado-Gama
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Ricardo Leon-Letelier
- Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Laura C Bonifaz
- Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | | |
Collapse
|
5
|
Ahad A, Smita S, Mishra GP, Biswas VK, Sen K, Gupta B, Garcin D, Acha‐Orbea H, Raghav SK. NCoR1 fine‐tunes type‐I IFN response in cDC1 dendritic cells by directly regulating Myd88‐IRF7 axis under TLR9. Eur J Immunol 2020; 50:1959-1975. [DOI: 10.1002/eji.202048566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/06/2020] [Accepted: 06/26/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Abdul Ahad
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- Manipal Academy of Higher Education Manipal India
| | - Shuchi Smita
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- Manipal Academy of Higher Education Manipal India
| | - Gyan Prakash Mishra
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- School of Biotechnology Kalinga Institute of Industrial Technology (KIIT) Bhubaneswar India
| | - Viplov Kumar Biswas
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- School of Biotechnology Kalinga Institute of Industrial Technology (KIIT) Bhubaneswar India
| | - Kaushik Sen
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- Regional Centre for Biotechnology NCR Biotech Science Cluster Faridabad India
| | - Bhawna Gupta
- School of Biotechnology Kalinga Institute of Industrial Technology (KIIT) Bhubaneswar India
| | - Dominique Garcin
- Department of Microbiology and Molecular Medicine University of Geneva (UNIGE) Geneva Switzerland
| | - Hans Acha‐Orbea
- Department of Biochemistry CIIL University of Lausanne (UNIL) Epalinges Switzerland
| | - Sunil K. Raghav
- Immuno‐genomics & Systems Biology Laboratory Institute of Life Sciences (ILS) Bhubaneswar India
- Manipal Academy of Higher Education Manipal India
- School of Biotechnology Kalinga Institute of Industrial Technology (KIIT) Bhubaneswar India
- Regional Centre for Biotechnology NCR Biotech Science Cluster Faridabad India
| |
Collapse
|
6
|
Østvik AE, Svendsen TD, Granlund AVB, Doseth B, Skovdahl HK, Bakke I, Thorsvik S, Afroz W, Walaas GA, Mollnes TE, Gustafsson BI, Sandvik AK, Bruland T. Intestinal Epithelial Cells Express Immunomodulatory ISG15 During Active Ulcerative Colitis and Crohn's Disease. J Crohns Colitis 2020; 14:920-934. [PMID: 32020185 PMCID: PMC7392169 DOI: 10.1093/ecco-jcc/jjaa022] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIMS Intestinal epithelial cells [IECs] secrete cytokines that recruit immune cells to the mucosa and regulate immune responses that drive inflammation in inflammatory bowel disease [IBD]. However, experiments in patient-derived IEC models are still scarce. Here, we aimed to investigate how innate immunity and IEC-specific pattern recognition receptor [PRR] signalling can be involved in an enhanced type I interferon [IFN] gene signature observed in colon epithelium of patients with active IBD, with a special focus on secreted ubiquitin-like protein ISG15. METHODS Gene and protein expression in whole mucosa biopsies and in microdissected human colonic epithelial lining, in HT29 human intestinal epithelial cells and primary 3D colonoids treated with PRR-ligands and cytokines, were detected by transcriptomics, in situ hybridisation, immunohistochemistry, western blots, and enzyme-linked immunosorbent assay [ELISA]. Effects of IEC-secreted cytokines were examined in human peripheral blood mononuclear cells [PBMCs] by multiplex chemokine profiling and ELISA. RESULTS The type I IFN gene signature in human mucosal biopsies was mimicked in Toll-like receptor TLR3 and to some extent tumour necrosis factor [TNF]-treated human IECs. In intestinal biopsies, ISG15 expression correlated with expression of the newly identified receptor for extracellular ISG15, LFA-1 integrin. ISG15 was expressed and secreted from HT29 cells and primary 3D colonoids through both JAK1-pSTAT-IRF9-dependent and independent pathways. In experiments using PBMCs, we show that ISG15 releases IBD-relevant proinflammatory cytokines such as CXCL1, CXCL5, CXCL8, CCL20, IL1, IL6, TNF, and IFNγ. CONCLUSIONS ISG15 is secreted from primary IECs upon extracellular stimulation, and mucosal ISG15 emerges as an intriguing candidate for immunotherapy in IBD.
Collapse
Affiliation(s)
- Ann Elisabet Østvik
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Department of G2astroenterology and Hepatology, Clinic of Medicine, St. Olav’s University Hospital, Trondheim, Norway
| | - Tarjei Dahl Svendsen
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Atle van Beelen Granlund
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Centre of Molecular Inflammation Research, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Berit Doseth
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Helene Kolstad Skovdahl
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Ingunn Bakke
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Clinic of Medicine, St Olav’s University Hospital, Trondheim, Norway,Clinic of Laboratory Medicine, St. Olav’s University Hospital, Trondheim, Norway
| | - Silje Thorsvik
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Department of G2astroenterology and Hepatology, Clinic of Medicine, St. Olav’s University Hospital, Trondheim, Norway,Centre of Molecular Inflammation Research, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Wahida Afroz
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Gunnar Andreas Walaas
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Tom Eirik Mollnes
- Centre of Molecular Inflammation Research, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Research Laboratory, Nordland Hospital, Bodo, Norway,K.G. Jebsen Thrombosis Research and Expertise Center, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway,Department of Immunology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Björn Inge Gustafsson
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Department of G2astroenterology and Hepatology, Clinic of Medicine, St. Olav’s University Hospital, Trondheim, Norway
| | - Arne Kristian Sandvik
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Department of G2astroenterology and Hepatology, Clinic of Medicine, St. Olav’s University Hospital, Trondheim, Norway,Centre of Molecular Inflammation Research, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Torunn Bruland
- Department of Clinical and Molecular Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway,Clinic of Medicine, St Olav’s University Hospital, Trondheim, Norway,Corresponding author: Torunn Bruland, PhD, Department of Clinical and Molecular Medicine [IKOM], Faculty of Medicine and Health Sciences [MH], NTNU-Norwegian University of Science and Technology, Prinsesse Kristinas gate 1, NO-7489 Trondheim, Norway. Tel.: +47 72825324; E-mail
| |
Collapse
|
7
|
Bigley V, Collin M. Insights from Patients with Dendritic Cell Immunodeficiency. Mol Immunol 2020; 122:116-123. [PMID: 32344243 DOI: 10.1016/j.molimm.2020.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/27/2020] [Accepted: 04/16/2020] [Indexed: 12/15/2022]
Abstract
Dendritic Cells (DCs), derived from haematopoietic stem cells, are critical to the dynamic and balanced functioning of the intact immune system and are of great interest as vehicles of immunotherapy. Genetically modified mouse models have proved powerful tools to map DC development and function in vivo but human studies have previously relied heavily on in vitro systems. Human dendritic cell immunodeficiency, resulting from single gene mutations, offers new opportunities to dissect the role of human DCs in vivo, determine the genetic requirements for their development and map their haematopoietic differentiation pathways. This review will summarise the clinical phenotypes of mutations in GATA2, IRF8 and IKZF1 genes which result in global or subset specific dendritic cell deficiencies, discuss the functional consequences of these cytopenias and how these syndromes have informed our knowledge of DC differentiation and human haematopoiesis.
Collapse
Affiliation(s)
- Venetia Bigley
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre at Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
| | - Matthew Collin
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre at Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| |
Collapse
|
8
|
Csumita M, Csermely A, Horvath A, Nagy G, Monori F, Göczi L, Orbea HA, Reith W, Széles L. Specific enhancer selection by IRF3, IRF5 and IRF9 is determined by ISRE half-sites, 5' and 3' flanking bases, collaborating transcription factors and the chromatin environment in a combinatorial fashion. Nucleic Acids Res 2020; 48:589-604. [PMID: 31799619 PMCID: PMC6954429 DOI: 10.1093/nar/gkz1112] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/22/2019] [Accepted: 11/12/2019] [Indexed: 12/28/2022] Open
Abstract
IRF3, IRF5 and IRF9 are transcription factors, which play distinct roles in the regulation of antiviral and inflammatory responses. The determinants that mediate IRF-specific enhancer selection are not fully understood. To uncover regions occupied predominantly by IRF3, IRF5 or IRF9, we performed ChIP-seq experiments in activated murine dendritic cells. The identified regions were analysed with respect to the enrichment of DNA motifs, the interferon-stimulated response element (ISRE) and ISRE half-site variants, and chromatin accessibility. Using a machine learning method, we investigated the predictability of IRF-dominance. We found that IRF5-dominant regions differed fundamentally from the IRF3- and IRF9-dominant regions: ISREs were rare, while the NFKB motif and special ISRE half-sites, such as 5'-GAGA-3' and 5'-GACA-3', were enriched. IRF3- and IRF9-dominant regions were characterized by the enriched ISRE motif and lower frequency of accessible chromatin. Enrichment analysis and the machine learning method uncovered the features that favour IRF3 or IRF9 dominancy (e.g. a tripartite form of ISRE and motifs for NF-κB for IRF3, and the GAS motif and certain ISRE variants for IRF9). This study contributes to our understanding of how IRF members, which bind overlapping sets of DNA sequences, can initiate signal-dependent responses without activating superfluous or harmful programmes.
Collapse
Affiliation(s)
- Mária Csumita
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Attila Csermely
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Attila Horvath
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Gergely Nagy
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Fanny Monori
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Loránd Göczi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Hans-Acha Orbea
- Department of Biochemistry, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Walter Reith
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Centre Médical Universitaire (CMU), CH-1211 Geneva, Switzerland
| | - Lajos Széles
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
- Department of Human Genetics, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| |
Collapse
|
9
|
Unique Type I Interferon, Expansion/Survival Cytokines, and JAK/STAT Gene Signatures of Multifunctional Herpes Simplex Virus-Specific Effector Memory CD8 + T EM Cells Are Associated with Asymptomatic Herpes in Humans. J Virol 2019; 93:JVI.01882-18. [PMID: 30487281 DOI: 10.1128/jvi.01882-18] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 11/22/2018] [Indexed: 01/23/2023] Open
Abstract
A large proportion of the world population harbors herpes simplex virus 1 (HSV-1), a major cause of infectious corneal blindness. HSV-specific CD8+ T cells protect from herpesvirus infection and disease. However, the genomic, phenotypic, and functional characteristics of CD8+ T cells associated with the protection seen in asymptomatic (ASYMP) individuals, who, despite being infected, never experienced any recurrent herpetic disease, remains to be fully elucidated. In this investigation, we compared the phenotype, function, and level of expression of a comprehensive panel of 579 immune genes of memory CD8+ T cells, sharing the same HSV-1 epitope specificities, and freshly isolated peripheral blood from well-characterized cohorts of protected ASYMP and nonprotected symptomatic (SYMP) individuals, with a history of numerous episodes of recurrent herpetic disease, using the high-throughput digital NanoString nCounter system and flow cytometry. Interestingly, our results demonstrated that memory CD8+ T cells from ASYMP individuals expressed a unique set of genes involved in expansion and survival, type I interferon (IFN-I), and JAK/STAT pathways. Frequent multifunctional HSV-specific effector memory CD62Llow CD44high CD8+ TEM cells were detected in ASYMP individuals compared to more of monofunctional central memory CD62Lhigh CD44high CD8+ TCM cells in SYMP individuals. Shedding light on the genotype, phenotype, and function of antiviral CD8+ T cells from "naturally protected" ASYMP individuals will help design future T-cell-based ocular herpes immunotherapeutic vaccines.IMPORTANCE A staggering number of the world population harbors herpes simplex virus 1 (HSV-1) potentially leading to blinding recurrent herpetic disease. While the majority are asymptomatic (ASYMP) individuals who never experienced any recurrent herpetic disease, symptomatic (SYMP) individuals have a history of numerous episodes of recurrent ocular herpetic disease. This study elucidates the phenotype, the effector function, and the gene signatures of memory CD8+ T-cell populations associated with protection seen in ASYMP individuals. Frequent multifunctional HSV-specific effector memory CD8+ TEM cells were detected in ASYMP individuals. In contrast, nonprotected SYMP individuals had more central memory CD8+ TCM cells. The memory CD8+ TEM cells from ASYMP individuals expressed unique gene signatures characterized by higher levels of type I interferon (IFN), expansion and expansion/survival cytokines, and JAK/STAT pathways. Future studies on the genotype, phenotype, and function of antiviral CD8+ T cells from "naturally protected" ASYMP individuals will help in the potential design of T-cell-based ocular herpes vaccines.
Collapse
|
10
|
Gao B, Li S, Tan Z, Ma L, Liu J. ACTG1 and TLR3 are biomarkers for alcohol-associated hepatocellular carcinoma. Oncol Lett 2018; 17:1714-1722. [PMID: 30675230 PMCID: PMC6341811 DOI: 10.3892/ol.2018.9757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 10/15/2018] [Indexed: 12/14/2022] Open
Abstract
Alcohol consumption is a risk factor for the development of hepatocellular carcinoma (HCC); however, the association between alcohol and HCC remains unknown. The present study aimed to identify key genes related to alcohol-associated HCC to improve the current understanding of the pathology of this disease. Alcohol-associated and non-alcohol-associated HCC samples in the GSE50579 dataset of the Gene Omnibus Database were analyzed to investigate altered gene expression. Integrated bioinformatics methods were employed to clarify the biological functions of the differentially expressed genes (DEGs), including Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interactions (PPIs). The present study reported that candidate biomarker micro (mi)RNAs via TargetScan Human 7.1. DEGs and their associated miRNAs (according to bioinformatics analysis) were validated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Additionally, 284 EGs from the GSE50579 dataset were revealed. In GO term analysis, DEGs were closely associated with the ‘regulation of nucleic acid metabolism’. KEGG pathway analysis indicated that the DEGs were tightly engaged in the ‘VEGF and VEGF receptor signaling network’, ‘proteoglycan syndecan-mediated signaling events’, ‘erbB receptor signaling’ and ‘β1 integrin cell surface interactions’. According to the results of PPI and heat map analysis, the main hub genes were centrin 3 (CETN3), Toll-like receptor 3 (TLR3), receptor tyrosine-protein kinase (ERBB4), heat shock protein family member 8, actin γ1 (ACTG1) and α-smooth muscle actin. it was demonstrated that the ACTG1, TLR3, miR-6819-3p and miRΝΑ (miR)-6877-3P had undefined associations. Furthermore, RT-qPCR analysis revealed that miR-6819-3p and miR-6877-3P may enhance the expression levels of ACTG1 and inhibit the expression levels of TLR3 in alcohol-associated HCC tissues. TLR3 and ACTG1 were proposed as potential biomarkers of alcohol-associated HCC. Investigation into the regulatory functions of miR-6819-3p and miR-6877-3P may provide novel insights into the treatment of alcohol-associated HCC.
Collapse
Affiliation(s)
- Bing Gao
- School of Pharmacy, Qingdao University, Qingdao, Shandong 266021, P.R. China.,School of Basic Medicine, Qingdao University, Qingdao, Shandong 266021, P.R. China
| | - Shicheng Li
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Zhen Tan
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Leina Ma
- Cancer Institute, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266021, P.R. China.,Qingdao Cancer Institute, Qingdao, Shandong 266021, P.R. China
| | - Jia Liu
- School of Pharmacy, Qingdao University, Qingdao, Shandong 266021, P.R. China
| |
Collapse
|
11
|
Zhao J, Xue Y, Pan Y, Yao A, Wang G, Li D, Wang T, Zhao S, Hou Y. Toll-like receptor 3 agonist poly I:C reinforces the potency of cytotoxic chemotherapy via the TLR3-UNC93B1-IFN-β signaling axis in paclitaxel-resistant colon cancer. J Cell Physiol 2018; 234:7051-7061. [PMID: 30387134 DOI: 10.1002/jcp.27459] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 08/29/2018] [Indexed: 12/19/2022]
Abstract
Type I interferon (IFN) signaling in neoplastic cells has a chemo-sensitizing effect in cancer therapy. Toll-like receptor 3 (TLR3) activation promotes IFN-β production, which induces apoptosis and impairs proliferation in some cancer cells. Herein, we tested whether the TLR3 agonist polyinosinic: polycytidylic acid (poly I:C) can improve chemotherapeutic efficacy in paclitaxel (PTX) resistant cell lines. Human colon cancer cell lines HCT116, SW620, HCT-8 (sensitive to PTX), and HCT-8/PTX (resistant to PTX) were treated with poly I:C and the cell viability was measured. Results showed that poly I:C specifically impaired the cell viability of HCT-8/PTX by simultaneously promoting cell apoptosis and inhibiting cell proliferation. In addition, when TLR3 was overexpressed in HCT-8/PTX cells, we found that TLR3 contributed to the production of IFN-β that reduced cell viability, and poly I:C preferentially activated the TLR3-UNC93B1 signaling pathway to mediate this effect. Moreover, cotreatment of poly I:C and PTX acted synergistically to induce cell apoptosis of HCT-8/PTX via upregulating the expression of TLR3 and its molecular chaperone UNC93B1, assisting in the secretion of IFN-β. Notably, a combination of poly I:C and PTX synergistically inhibited the PTX-resistant tumor growth in vivo without side effects. In conclusion, our studies demonstrate that poly I:C reinforces the potency of cytotoxic chemotherapeutics in PTX-resistant cell line through the TLR3-UNC93B1-IFN-β signaling pathway, which supplies a novel mechanism of poly I:C for the chemotherapy sensitizing effect in a PTX-resistant tumor.
Collapse
Affiliation(s)
- Jiaojiao Zhao
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Yaxian Xue
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Yuchen Pan
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Anran Yao
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Guoqun Wang
- Department of Oncology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Dan Li
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Tingting Wang
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China
| | - Shuli Zhao
- General Clinical Research Center, Nanjing First hospital, Nanjing Medical University, Nanjing, China
| | - Yayi Hou
- Division of Immunology, The State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| |
Collapse
|
12
|
Giles DA, Duncker PC, Wilkinson NM, Washnock-Schmid JM, Segal BM. CNS-resident classical DCs play a critical role in CNS autoimmune disease. J Clin Invest 2018; 128:5322-5334. [PMID: 30226829 DOI: 10.1172/jci123708] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/11/2018] [Indexed: 12/19/2022] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) is an inflammatory demyelinating disease of the central nervous system (CNS), induced by the adoptive transfer of myelin-reactive CD4+ T cells into naive syngeneic mice. It is widely used as a rodent model of multiple sclerosis (MS). The development of EAE lesions is initiated when transferred CD4+ T cells access the CNS and are reactivated by local antigen-presenting cells (APCs) bearing endogenous myelin peptide/MHC class II complexes. The identity of the CNS-resident, lesion-initiating APCs is widely debated. Here we demonstrate that classical dendritic cells (cDCs) normally reside in the meninges, brain, and spinal cord in the steady state. These cells are unique among candidate CNS APCs in their ability to stimulate naive, as well as effector, myelin-specific T cells to proliferate and produce proinflammatory cytokines directly ex vivo. cDCs expanded in the meninges and CNS parenchyma in association with disease progression. Selective depletion of cDCs led to a decrease in the number of myelin-primed donor T cells in the CNS and reduced the incidence of clinical EAE by half. Based on our findings, we propose that cDCs, and the factors that regulate them, be further investigated as potential therapeutic targets in MS.
Collapse
Affiliation(s)
- David A Giles
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology.,Graduate Program in Immunology, and.,Medical Scientist Training Program, University of Michigan, Ann Arbor, Michigan, USA
| | - Patrick C Duncker
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology.,Graduate Program in Immunology, and
| | | | | | - Benjamin M Segal
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology.,Graduate Program in Immunology, and.,Neurology Service, VA Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
| |
Collapse
|
13
|
Richards AL, Sheldon K, Wu X, Gruber DR, Hudson KE. The Role of the Immunological Synapse in Differential Effects of APC Subsets in Alloimmunization to Fresh, Non-stored RBCs. Front Immunol 2018; 9:2200. [PMID: 30344520 PMCID: PMC6182098 DOI: 10.3389/fimmu.2018.02200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/05/2018] [Indexed: 01/19/2023] Open
Abstract
Background: Each year, over 5 million red blood cell (RBC) transfusions are administered to patients in the USA. Despite the therapeutic benefits of RBC transfusions, there are associated risks. RBC-specific alloantibodies may form in response to antigenic differences between RBC donors and recipients; these alloantibodies can be a problem as they may mediate hemolysis or pose barriers to future transfusion support. While there is currently no reliable way to predict which RBC recipients will make an alloantibody response, risk factors such as inflammation have been shown to correlate with increased rates of RBC alloimmunization. The underlying mechanisms behind how inflammation mediates alloantibody production are incompletely defined. Methods: To assess erythrophagocytosis, mice were treated with PBS or inflammatory stimuli followed by a transfusion of allogeneic RBCs labeled with a lipophilic dye. At multiple time points, RBC consumption and expression of activation makers by leukocytes was evaluated. To determine which antigen presenting cell (APC) subset(s) were capable of promoting allogeneic T cell activation, sorted leukocyte populations (which had participated in erythrophagocytosis) were co-cultured in vitro with allogeneic CD4+ T cells; T cell proliferation and ability to form immunological synapses with APCs were determined. Results: Upon transfusion of fresh allogeneic RBCs, multiple APCs consumed transfused RBCs. However, only CD8+ and CD11b+ dendritic cells formed productive immunological synapses with allogeneic T cells and stimulated proliferation. Importantly, allogeneic T cell activation and RBC alloantibody production occurred in response to RBC transfusion alone, and transfusion in the context of inflammation enhanced RBC consumption, the number of immune synapses, allogeneic T cell proliferation, and the rate and magnitude of alloantibody production. Conclusions: These data demonstrate that regardless of the ability to participate in RBC consumption, only a subset of APCs are capable of forming an immune synapse with T cells thereby initiating an alloantibody response. Additionally, these data provide mechanistic insight into RBC alloantibody generation.
Collapse
Affiliation(s)
| | - Kathryn Sheldon
- Bloodworks Northwest Research Institute, Seattle, WA, United States
| | - Xiaoping Wu
- Bloodworks Northwest Research Institute, Seattle, WA, United States
| | - David R Gruber
- Bloodworks Northwest Research Institute, Seattle, WA, United States
| | - Krystalyn E Hudson
- Bloodworks Northwest Research Institute, Seattle, WA, United States.,Department of Laboratory Medicine, University of Washington School of Medicine, Seattle, WA, United States
| |
Collapse
|
14
|
Bigley V, Cytlak U, Collin M. Human dendritic cell immunodeficiencies. Semin Cell Dev Biol 2018; 86:50-61. [PMID: 29452225 DOI: 10.1016/j.semcdb.2018.02.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 11/28/2017] [Accepted: 02/10/2018] [Indexed: 12/21/2022]
Abstract
The critical functions of dendritic cells (DCs) in immunity and tolerance have been demonstrated in many animal models but their non-redundant roles in humans are more difficult to probe. Human primary immunodeficiency (PID), resulting from single gene mutations, may result in DC deficiency or dysfunction. This relatively recent recognition illuminates the in vivo role of human DCs and the pathophysiology of the associated clinical syndromes. In this review, the development and function of DCs as established in murine models and human in vitro systems, discussed. This forms the basis of predicting the effects of DC deficiency in vivo and understanding the consequences of specific mutations on DC development and function. DC deficiency syndromes are associated with heterozygous GATA2 mutation, bi-allelic and heterozygous IRF8 mutation and heterozygous IKZF1 mutation. The intricate involvement of DCs in the balance between immunity and tolerance is leading to increased recognition of their involvement in a number of other immunodeficiencies and autoimmune conditions. Owing to the precise control of transcription factor gene expression by super-enhancer elements, phenotypic anomalies are relatively commonly caused by heterozygous mutations.
Collapse
Affiliation(s)
- Venetia Bigley
- Human DC Lab, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK; Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
| | - Urszula Cytlak
- Human DC Lab, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Matthew Collin
- Human DC Lab, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK; Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| |
Collapse
|
15
|
Chen P, Liu X, Sun Y, Zhou P, Wang Y, Zhang Y. Dendritic cell targeted vaccines: Recent progresses and challenges. Hum Vaccin Immunother 2017; 12:612-22. [PMID: 26513200 DOI: 10.1080/21645515.2015.1105415] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Dendritic cells (DCs) are known to be a set of morphology, structure and function of heterogeneous professional antigen presenting cells (APCs), as well as the strongest functional antigen presenting cells, which can absorb, process and present antigens. As the key regulators of innate and adaptive immune responses, DCs are at the center of the immune system and capable of interacting with both B cells and T cells, thereby manipulating the humoral and cellular immune responses. DCs provide an essential link between the innate and adaptive immunity, and the strong immune activation function of DCs and their properties of natural adjuvants, make them a valuable target for antigen delivery. Targeting antigens to DC-specific endocytic receptors in combination with the relevant antibodies or ligands along with immunostimulatory adjuvants has been recently recognized as a promising strategy for designing an effective vaccine that elicits a strong and durable T cell response against intracellular pathogens and cancer. This opinion article provides a brief summary of the rationales, superiorities and challenges of existing DC-targeting approaches.
Collapse
Affiliation(s)
- Pengfei Chen
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| | - Xinsheng Liu
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| | - Yuefeng Sun
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| | - Peng Zhou
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| | - Yonglu Wang
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| | - Yongguang Zhang
- a State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Lanzhou , China
| |
Collapse
|
16
|
Sesti-Costa R, Françozo MCS, Silva GK, Proenca-Modena JL, Silva JS. TLR3 is required for survival following Coxsackievirus B3 infection by driving T lymphocyte activation and polarization: The role of dendritic cells. PLoS One 2017; 12:e0185819. [PMID: 28973047 PMCID: PMC5626506 DOI: 10.1371/journal.pone.0185819] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 09/20/2017] [Indexed: 11/21/2022] Open
Abstract
Type B coxsackievirus (CVB) is a common cause of acute and chronic myocarditis, meningitis and pancreatitis, often leading to heart failure and pancreatic deficiency. The polarization of CD4+ T lymphocytes and their cytokine milieu are key factors in the outcome of CVB-induced diseases. Thus, sensing the virus and driving the adaptive immune response are essential for the establishment of a protective immune response. TLR3 is a crucial virus recognition receptor that confers the host with resistance to CVB infection. In the current study, we found that TLR3 expression in dendritic cells plays a role in their activation upon CVB3 infection in vitro, as TLR3-deficient dendritic cells up-regulate CD80 and CD86 to a less degree than WT cells. Instead, they up-regulated the inhibitory molecule PD-L1 and secreted considerably lower levels of TNF-α and IL-10 and a higher level of IL-23. T lymphocyte proliferation in co-culture with CVB3-infected dendritic cells was increased by TLR3-expressing DCs and other cells. Furthermore, in the absence of TLR3, the T lymphocyte response was shifted toward a Th17 profile, which was previously reported to be deleterious for the host. TLR3-deficient mice were very susceptible to CVB3 infection, with increased pancreatic injury and extensive inflammatory infiltrate in the heart that was associated with uncontrolled viral replication. Adoptive transfer of TLR3+ dendritic cells slightly improved the survival of TLR-deficient mice following CVB3 infection. Therefore, our findings highlight the importance of TLR3 signaling in DCs and in other cells to induce activation and polarization of the CD4+ T lymphocyte response toward a Th1 profile and consequently for a better outcome of CVB3 infection. These data provide new insight into the immune-mediated mechanisms by which CVBs are recognized and cleared in order to prevent the development of myocarditis and pancreatitis and may contribute to the design of therapies for enteroviral infections.
Collapse
Affiliation(s)
- Renata Sesti-Costa
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcela Cristina Santiago Françozo
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research GmbH, Hannover, Germany
| | - Grace Kelly Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - José Luiz Proenca-Modena
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- * E-mail:
| |
Collapse
|
17
|
Richards AL, Hendrickson JE, Zimring JC, Hudson KE. Erythrophagocytosis by plasmacytoid dendritic cells and monocytes is enhanced during inflammation. Transfusion 2016; 56:905-16. [PMID: 26843479 DOI: 10.1111/trf.13497] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/05/2015] [Accepted: 11/13/2015] [Indexed: 12/23/2022]
Abstract
BACKGROUND Generation of antibodies against red blood cell (RBC) antigens can be a clinically significant problem. The underlying mechanisms that regulate the production of RBC antibodies are only partially understood; however, factors such as inflammation significantly increase the rates of RBC antibody generation. Humoral alloimmunization begins with consumption of transfused RBCs by antigen-presenting cells (APCs). Recently, it has become appreciated that there are multiple different types of APCs. The relative contribution of APC subsets to RBC antibodies has not been described in either the quiescent or the inflamed states. STUDY DESIGN AND METHODS To evaluate the types of APCs that consume RBCs, and how inflammation affects this process, C56Bl/6 mice were treated with polyinosinic-polycytidylic acid (poly(I:C)) to induce an inflammatory response and/or were transfused with 3,3'-dihexadecyloxacarbocyanine perchlorate-labeled syngeneic RBCs. Erythrophagocytosis (both at baseline and during inflammation) was analyzed for different subsets of macrophages (MΦ), dendritic cells (DCs), B cells, and monocytes, by a combined approach using flow cytometry and fluorescent microscopy technology. RESULTS In four independent experiments, erythrophagocytosis at baseline was predominately performed by red pulp MΦ; however, during inflammation both plasmacytoid DCs (pDCs) and monocytes increased RBC consumption. Furthermore, pDCs up regulated MHC-II and activation markers CD80 and CD86. In addition to changing patterns of erythrophagocytosis, inflammation also led to a significant decrease in CD11c+ conventional DC populations and an increase in granulocytes. CONCLUSIONS The nature of APCs that consume transfused RBCs is changed by inflammation. Given that APCs initiate humoral immune responses, these findings provide potential mechanistic insight into how inflammation regulates RBC alloimmunization.
Collapse
Affiliation(s)
| | - Jeanne E Hendrickson
- Departments of Laboratory Medicine and Pediatrics, Yale University School of Medicine, New Haven, Connecticut
| | - James C Zimring
- Bloodworks NW Research Institute, Seattle, Washington.,Departments of Laboratory Medicine and Hematology Division, University of Washington, Seattle, Washington
| | | |
Collapse
|