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Kim J, Moreno A, Krueger JG. The imbalance between Type 17 T-cells and regulatory immune cell subsets in psoriasis vulgaris. Front Immunol 2022; 13:1005115. [PMID: 36110854 PMCID: PMC9468415 DOI: 10.3389/fimmu.2022.1005115] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/15/2022] [Indexed: 11/30/2022] Open
Abstract
Psoriasis vulgaris is a common inflammatory disease affecting 7.5 million adults just in the US. Previously, psoriasis immunopathogenesis has been viewed as the imbalance between CD4+ T-helper 17 (Th17) cells and regulatory T-cells (Tregs). However, current paradigms are rapidly evolving as new technologies to study immune cell subsets in the skin have been advanced. For example, recently minted single-cell RNA sequencing technology has provided the opportunity to compare highly differing transcriptomes of Type 17 T-cell (T17 cell) subsets depending on IL-17A vs. IL-17F expression. The expression of regulatory cytokines in T17 cell subsets provided evidence of T-cell plasticity between T17 cells and regulatory T-cells (Tregs) in humans. In addition to Tregs, other types of regulatory cells in the skin have been elucidated, including type 1 regulatory T-cells (Tr1 cells) and regulatory dendritic cells. More recently, investigators are attempting to apply single-cell technologies to clinical trials of biologics to test if monoclonal blockade of pathogenic T-cells will induce expansion of regulatory immune cell subsets involved in skin homeostasis.
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Affiliation(s)
- Jaehwan Kim
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY, United States
- Dermatology Section, Veterans Affairs Northern California Health Care System, Mather, CA, United States
- Department of Dermatology, University of California Davis, Sacramento, CA, United States
- *Correspondence: Jaehwan Kim, ; James G. Krueger,
| | - Ariana Moreno
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY, United States
| | - James G. Krueger
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY, United States
- *Correspondence: Jaehwan Kim, ; James G. Krueger,
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2
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Lee J, Zhang J, Chung YJ, Kim JH, Kook CM, González-Navajas JM, Herdman DS, Nürnberg B, Insel PA, Corr M, Mo JH, Tao A, Yasuda K, Rifkin IR, Broide DH, Sciammas R, Webster NJG, Raz E. Inhibition of IRF4 in dendritic cells by PRR-independent and -dependent signals inhibit Th2 and promote Th17 responses. eLife 2020; 9:e49416. [PMID: 32014112 PMCID: PMC7000221 DOI: 10.7554/elife.49416] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 01/17/2020] [Indexed: 12/13/2022] Open
Abstract
Cyclic AMP (cAMP) is involved in many biological processes but little is known regarding its role in shaping immunity. Here we show that cAMP-PKA-CREB signaling (a pattern recognition receptor [PRR]-independent mechanism) regulates conventional type-2 Dendritic Cells (cDC2s) in mice and reprograms their Th17-inducing properties via repression of IRF4 and KLF4, transcription factors essential for cDC2-mediated Th2 induction. In mice, genetic loss of IRF4 phenocopies the effects of cAMP on Th17 induction and restoration of IRF4 prevents the cAMP effect. Moreover, curdlan, a PRR-dependent microbial product, activates CREB and represses IRF4 and KLF4, resulting in a pro-Th17 phenotype of cDC2s. These in vitro and in vivo results define a novel signaling pathway by which cDC2s display plasticity and provide a new molecular basis for the classification of novel cDC2 and cDC17 subsets. The findings also reveal that repressing IRF4 and KLF4 pathway can be harnessed for immuno-regulation.
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Affiliation(s)
- Jihyung Lee
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - Junyan Zhang
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
- The Second Affiliated Hospital of Guangzhou Medical University (GMU), The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical ImmunologyGuangzhouChina
- Center for Immunology, Inflammation and Immune-mediated disease, GMUGuangzhouChina
| | - Young-Jun Chung
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
- Department of Otorhinolaryngology-Head and Neck SurgeryDankook University College of MedicineChungnamRepublic of Korea
| | - Jun Hwan Kim
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - Chae Min Kook
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - José M González-Navajas
- Center for Immunology, Inflammation and Immune-mediated disease, GMUGuangzhouChina
- Alicante Institute for Health and Biomedical Research (ISABIAL - FISABIO)AlicanteSpain
- Networked Biomedical Research Center for Hepatic and Digestive Diseases (CIBERehd)Institute of Health Carlos IIIMadridSpain
| | - David S Herdman
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - Bernd Nürnberg
- Department of Pharmacology and Experimental TherapyUniversity of TübingenTübingenGermany
| | - Paul A Insel
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
- Department of PharmacologyUniversity of California San DiegoSan DiegoUnited States
| | - Maripat Corr
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - Ji-Hun Mo
- Department of Otorhinolaryngology-Head and Neck SurgeryDankook University College of MedicineChungnamRepublic of Korea
| | - Ailin Tao
- The Second Affiliated Hospital of Guangzhou Medical University (GMU), The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical ImmunologyGuangzhouChina
- Center for Immunology, Inflammation and Immune-mediated disease, GMUGuangzhouChina
| | - Kei Yasuda
- Boston University School of MedicineBostonUnited States
| | - Ian R Rifkin
- Boston University School of MedicineBostonUnited States
- VA Boston Healthcare SystemBostonUnited States
| | - David H Broide
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
| | - Roger Sciammas
- Center for Comparative MedicineUniversity of California, DavisDavisUnited States
| | - Nicholas JG Webster
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
- VA San Diego Healthcare SystemSan DiegoUnited States
| | - Eyal Raz
- Department of MedicineUniversity of California San DiegoSan DiegoUnited States
- Center for Immunology, Inflammation and Immune-mediated disease, GMUGuangzhouChina
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3
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Park J, DeLong JH, Knox JJ, Konradt C, Wojno EDT, Hunter CA. Impact of Interleukin-27p28 on T and B Cell Responses during Toxoplasmosis. Infect Immun 2019; 87:e00455-19. [PMID: 31548322 PMCID: PMC6867838 DOI: 10.1128/iai.00455-19] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/18/2019] [Indexed: 11/20/2022] Open
Abstract
Interleukin-27 (IL-27) is a heterodimeric cytokine composed of the subunits IL-27p28 and EBi3, and while the IL-27 heterodimer influences T cell activities, there is evidence that IL-27p28 can have EBi3-independent activities; however, their relevance to infection is unclear. Therefore, the studies presented here compared how IL-27p28 transgenics and IL-27p28-/- mice responded to the intracellular parasite Toxoplasma gondii While the loss of IL-27p28 and its overexpression both result in increased susceptibility to T. gondii, the basis for this phenotype reveals distinct roles for IL-27p28. As a component of IL-27, IL-27p28 is critical to limit infection-induced T cell-mediated pathology, whereas the ectopic expression of IL-27p28 reduced the effector T cell population and had a major inhibitory effect on parasite-specific antibody titers and a failure to control parasite replication in the central nervous system. Indeed, transfer of immune serum to infected IL-27p28 transgenics resulted in reduced parasite burden and pathology. Thus, IL-27p28, independent of its role as a component of IL-27, can act as a negative regulator of humoral and cellular responses during toxoplasmosis.
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Affiliation(s)
- Jeongho Park
- University of Pennsylvania, School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
| | - Jonathan H DeLong
- University of Pennsylvania, School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
| | - James J Knox
- University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Christoph Konradt
- University of Pennsylvania, School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
| | - Elia D Tait Wojno
- University of Washington, Department of Immunology, Seattle, Washington, USA
| | - Christopher A Hunter
- University of Pennsylvania, School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
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4
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Lee Y, Clinton J, Yao C, Chang SH. Interleukin-17D Promotes Pathogenicity During Infection by Suppressing CD8 T Cell Activity. Front Immunol 2019; 10:1172. [PMID: 31244826 PMCID: PMC6562898 DOI: 10.3389/fimmu.2019.01172] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 05/08/2019] [Indexed: 12/16/2022] Open
Abstract
Interleukin-17D (IL-17D) belongs to the IL-17 family of cytokines. While the members of the IL-17 family have been implicated in inflammation and host defense, the function of IL-17D remains unclear. Here, we showed that the lack of IL-17D expression confers protection against Listeria infection. A deficiency in IL-17D also resulted in less weight loss with reduced pathogen burden during influenza A virus infection. During infection, the loss of IL-17D resulted in compromised CD8 T cell activity. CD8 T cell depletion in IL-17D-deficient mice restored the bacterial burden to a level similar to that found in WT mice. Similarly, IL-17D-deficient mice in a RAG-deficient background had no difference in bacterial and viral burden compared to WT mice. IL-17D controlled CD8 T cell activity in part by suppressing the function of dendritic cells. We found that IL-17D from the non-hematopoietic compartment regulates protective immunity during infection. Together, our data led to the identification of IL-17D as a critical cytokine during intracellular bacteria and virus infection that suppresses the activity of CD8 T cells by regulating dendritic cells.
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Affiliation(s)
- Younghee Lee
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jelita Clinton
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Chengfang Yao
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Seon Hee Chang
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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D'Orazio SEF. Innate and Adaptive Immune Responses during Listeria monocytogenes Infection. Microbiol Spectr 2019; 7:10.1128/microbiolspec.gpp3-0065-2019. [PMID: 31124430 PMCID: PMC11086964 DOI: 10.1128/microbiolspec.gpp3-0065-2019] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Indexed: 12/15/2022] Open
Abstract
It could be argued that we understand the immune response to infection with Listeria monocytogenes better than the immunity elicited by any other bacteria. L. monocytogenes are Gram-positive bacteria that are genetically tractable and easy to cultivate in vitro, and the mouse model of intravenous (i.v.) inoculation is highly reproducible. For these reasons, immunologists frequently use the mouse model of systemic listeriosis to dissect the mechanisms used by mammalian hosts to recognize and respond to infection. This article provides an overview of what we have learned over the past few decades and is divided into three sections: "Innate Immunity" describes how the host initially detects the presence of L. monocytogenes and characterizes the soluble and cellular responses that occur during the first few days postinfection; "Adaptive Immunity" discusses the exquisitely specific T cell response that mediates complete clearance of infection and immunological memory; "Use of Attenuated Listeria as a Vaccine Vector" highlights the ways that investigators have exploited our extensive knowledge of anti-Listeria immunity to develop cancer therapeutics.
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Affiliation(s)
- Sarah E F D'Orazio
- University of Kentucky, Microbiology, Immunology & Molecular Genetics, Lexington, KY 40536-0298
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6
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IL-27 confers a protumorigenic activity of regulatory T cells via CD39. Proc Natl Acad Sci U S A 2019; 116:3106-3111. [PMID: 30718407 DOI: 10.1073/pnas.1810254116] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Expression of ectonucleotidase CD39 contributes to the suppressive activity of Foxp3+ regulatory T cells (Tregs) by hydrolyzing immunogenic ATP into AMP. The molecular mechanism that drives CD39 expression on Tregs remains elusive. We found that tumor-infiltrating Tregs (Ti-Tregs) failed to up-regulate CD39 in mice lacking EBI3 subunit of IL-27 or IL-27Ra. Mixed bone marrow chimera and in vitro studies showed that IL-27 signaling in Tregs directly drives CD39 expression on Ti-Tregs in a STAT1-dependent, but STAT3- and T-bet-independent, manner. Tregs stimulated with IL-27 showed enhanced suppressive activities against CD8+ T cell responses in vitro. Moreover, IL-27Ra-deficient Tregs and STAT1-deficient Tregs were less efficient than WT Tregs in suppressing antitumor immunity in vivo. CD39 inhibition significantly abolished IL-27-induced suppressive activities of Tregs. Thus, IL-27 signaling in Tregs critically contributes to protumorigenic properties of Tregs via up-regulation of CD39.
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Li Y, Wang Y, Liu H, Ding K, Hao S, Shao Y, Wang H, Chen J, Huang L, Shao Z, Fu R. Lower level of IL‑35 and its reduced inhibition in Th17 cells in patients with bone marrow mononuclear cells Coombs test‑positive hemocytopenia. Mol Med Rep 2017; 17:2973-2981. [PMID: 29257310 PMCID: PMC5783516 DOI: 10.3892/mmr.2017.8252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 08/10/2017] [Indexed: 01/27/2023] Open
Abstract
Interleukin (IL)-35 is the latest member of IL-12 family, which plays an important role in other autoimmune diseases. Bone marrow mononuclear cells Coombs test-positive hemocytopenia, also termed immunorelated hemocytopenia (IRH) is a type of autoimmune-associated diseases. The present study investigated the relationship of IL-35 in patients with IRH. A total of 43 patients with IRH and 19 normal controls were enrolled in the current study. Serum levels of IL-35 and IL-17 in peripheral blood were evaluated by ELISA. Regulatory T cells (Tregs) level was detected by flow cytometry and IL-35 subunits mRNA in Treg was determined using reverse transcription-quantitative polymerase chain reaction: Epstein-Barr virus induced 3 (EBI3) and IL-12α chain p35. Effect of IL-35 on T helper 17 cells (Th17) cells was determined by mix-culture of IL-35 with CD4+ T lymphocytes. Serum level of IL-35 was decreased in untreated patients with IRH compared with remission patients (P<0.01) and was significantly associated with clinical indexes. Frequency of IL-35 produced Tregs was lower and IL-35 subunits mRNA in CD4+CD25+ Tregs were decreased in patients with IRH compared with health controls (P<0.01). Serum level of IL-17 was increased in patients with IRH (P<0.01) and there was a negative correlation between IL-35 and IL-17 (r=−0.553; P<0.01). The production of Th17 cells and IL-17A mRNA expression were reduced (P<0.05) after mix-culture of CD4+ T lymphocytes with IL-35 compared with mix-culture of CD4+ T lymphocytes without IL-35. In conclusion, the present study revealed that IL-35 may be a monitoring indicator of IRH occurrence and progression. IL-35 level was lower and the inhibition on Th17 cells was reduced in the patients with IRH.
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Affiliation(s)
- Yi Li
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yihao Wang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Hui Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Kai Ding
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Shanfeng Hao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yuanyuan Shao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Honglei Wang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Jin Chen
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Lei Huang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Zonghong Shao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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Colliou N, Ge Y, Sahay B, Gong M, Zadeh M, Owen JL, Neu J, Farmerie WG, Alonzo F, Liu K, Jones DP, Li S, Mohamadzadeh M. Commensal Propionibacterium strain UF1 mitigates intestinal inflammation via Th17 cell regulation. J Clin Invest 2017; 127:3970-3986. [PMID: 28945202 PMCID: PMC5663347 DOI: 10.1172/jci95376] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/02/2017] [Indexed: 12/21/2022] Open
Abstract
Consumption of human breast milk (HBM) attenuates the incidence of necrotizing enterocolitis (NEC), which remains a leading and intractable cause of mortality in preterm infants. Here, we report that this diminution correlates with alterations in the gut microbiota, particularly enrichment of Propionibacterium species. Transfaunation of microbiota from HBM-fed preterm infants or a newly identified and cultured Propionibacterium strain, P. UF1, to germfree mice conferred protection against pathogen infection and correlated with profound increases in intestinal Th17 cells. The induction of Th17 cells was dependent on bacterial dihydrolipoamide acetyltransferase (DlaT), a major protein expressed on the P. UF1 surface layer (S-layer). Binding of P. UF1 to its cognate receptor, SIGNR1, on dendritic cells resulted in the regulation of intestinal phagocytes. Importantly, transfer of P. UF1 profoundly mitigated induced NEC-like injury in neonatal mice. Together, these results mechanistically elucidate the protective effects of HBM and P. UF1-induced immunoregulation, which safeguard against proinflammatory diseases, including NEC.
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Affiliation(s)
- Natacha Colliou
- Department of Infectious Diseases and Immunology
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine
| | - Yong Ge
- Department of Infectious Diseases and Immunology
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine
| | - Bikash Sahay
- Department of Infectious Diseases and Immunology
| | - Minghao Gong
- Department of Infectious Diseases and Immunology
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine
| | - Mojgan Zadeh
- Department of Infectious Diseases and Immunology
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine
| | | | - Josef Neu
- Division of Neonatology, Department of Pediatrics, and
| | - William G. Farmerie
- Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida, USA
| | - Francis Alonzo
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, Illinois, USA
| | - Ken Liu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Dean P. Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Shuzhao Li
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Mansour Mohamadzadeh
- Department of Infectious Diseases and Immunology
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine
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Chehboun S, Labrecque-Carbonneau J, Pasquin S, Meliani Y, Meddah B, Ferlin W, Sharma M, Tormo A, Masson JF, Gauchat JF. Epstein-Barr virus-induced gene 3 (EBI3) can mediate IL-6 trans-signaling. J Biol Chem 2017; 292:6644-6656. [PMID: 28280243 DOI: 10.1074/jbc.m116.762021] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 02/06/2017] [Indexed: 11/06/2022] Open
Abstract
Epstein-Barr virus-induced gene 3 (EBI3) is a subunit of the composite cytokines IL-27 and IL-35. Both have beneficial functions or effects in models of infectious and autoimmune diseases. This suggests that administration of EBI3 could be therapeutically useful by binding free p28 and p35 to generate IL-27 and IL-35. IL-27- and IL-35-independent functions of EBI3 could compromise its therapeutic uses. We therefore assessed the effects of EBI3 on cytokine receptor-expressing cells. We observed that EBI3 activates STAT3 and induces the proliferation of the IL-6-dependent B9 mouse plasmacytoma cell line. Analyses using blocking mAbs and Ba/F3 transfectants expressing gp130 indicate that EBI3 activity was linked to its capacity to mediate IL-6 trans-signaling, albeit less efficiently than soluble IL-6Rα. In line with this interpretation, co-immunoprecipitation and SPR experiments indicated that EBI3 binds IL-6. An important pro-inflammatory function of IL-6 trans-signaling is to activate blood vessel endothelial cells. We observed that EBI3 in combination with IL-6 could induce the expression of chemokines by human venal endothelial cells. Our results indicate that EBI3 can promote pro-inflammatory IL-6 functions by mediating trans-signaling. These unexpected observations suggest that use of EBI3 as a therapeutic biologic for autoimmune diseases will likely require co-administration of soluble gp130 to prevent the side effects associated with IL-6 trans-signaling. Together with previous studies that demonstrated activation of IL-6R by p28 (IL-30), new findings further suggest a complex interrelation between IL-27 and IL-6.
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Affiliation(s)
| | | | | | | | - Bouchra Meddah
- the Laboratory of Pharmacology and Toxicology, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
| | | | - Mukut Sharma
- the Research Service, Kansas City Veterans Affairs Medical Center and Midwest Biomedical Research Foundation, Kansas City, Missouri 64128-2226
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10
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Choi G, Chung Y. Blockade of STAT3 in T Cells Inhibits Germinal Center Reactions against Intranasal Allergens. Biomol Ther (Seoul) 2016; 24:244-51. [PMID: 27133258 PMCID: PMC4859787 DOI: 10.4062/biomolther.2015.160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 10/18/2015] [Accepted: 10/21/2015] [Indexed: 01/13/2023] Open
Abstract
Understanding the developmental mechanisms of humoral immunity against intranasal antigens is essential for the development of therapeutic approaches against air-borne pathogens as well as allergen-induced pulmonary inflammation. Follicular helper T (Tfh) cells expressing CXCR5 are required for humoral immunity by providing IL-21 and ICOS costimulation to activated B cells. However, the regulation of Tfh cell responses against intranasal antigens remains unclear. Here, we found that the generation of Tfh cells and germinal center B cells in the bronchial lymph node against intranasal proteinase antigens was independent of TGF-β. In contrast, administration of STAT3 inhibitor STA-21 suppressed the generation of Tfh cells and germinal center B cells. Compared with wild-type OT-II T cells, STAT3-deficient OT-II T cells transferred into recipients lacking T cells not only showed significantly reduced frequency Tfh cells, but also induced diminished IgG as well as IgE specific for the intranasal antigens. Cotransfer study of wild-type OT-II and STAT3-deficient OT-II T cells revealed that the latter failed to differentiate into Tfh cells. These findings demonstrate that T cell-intrinsic STAT3 is required for the generation of Tfh cells to intranasal antigens and that targeting STAT3 might be an effective approach to ameliorate antibody-mediated pathology in the lung.
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Affiliation(s)
- Garam Choi
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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11
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Jeon YT, Na H, Ryu H, Chung Y. Modulation of Dendritic Cell Activation and Subsequent Th1 Cell Polarization by Lidocaine. PLoS One 2015; 10:e0139845. [PMID: 26445366 PMCID: PMC4596553 DOI: 10.1371/journal.pone.0139845] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 09/17/2015] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells play an essential role in bridging innate and adaptive immunity by recognizing cellular stress including pathogen- and damage-associated molecular patterns and by shaping the types of antigen-specific T cell immunity. Although lidocaine is widely used in clinical settings that trigger cellular stress, it remains unclear whether such treatment impacts the activation of innate immune cells and subsequent differentiation of T cells. Here we showed that lidocaine inhibited the production of IL–6, TNFα and IL–12 from dendritic cells in response to toll-like receptor ligands including lipopolysaccharide, poly(I:C) and R837 in a dose-dependent manner. Notably, the differentiation of Th1 cells was significantly suppressed by the addition of lidocaine while the same treatment had little effect on the differentiation of Th17, Th2 and regulatory T cells in vitro. Moreover, lidocaine suppressed the ovalbumin-specific Th1 cell responses in vivo induced by the adoptive transfer of ovalbumin-pulsed dendritic cells. These results demonstrate that lidocaine inhibits the activation of dendritic cells in response to toll-like receptor signals and subsequently suppresses the differentiation of Th1 cell responses.
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Affiliation(s)
- Young-Tae Jeon
- Department of Anesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hyeongjin Na
- Laboratory of Immune Regulation, Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Heeju Ryu
- Laboratory of Immune Regulation, Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- * E-mail:
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12
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Seregin SS, Chen GY, Laouar Y. Dissecting CD8+ NKT Cell Responses to Listeria Infection Reveals a Component of Innate Resistance. THE JOURNAL OF IMMUNOLOGY 2015; 195:1112-20. [PMID: 26116500 DOI: 10.4049/jimmunol.1500084] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/23/2015] [Indexed: 12/21/2022]
Abstract
A small pool of NK1.1(+) CD8(+) T cells is harbored among the conventional CD8(+) T cell compartment. Conclusions drawn from the analysis of immune responses mediated by cytotoxic CD8(+) T cells are often based on the total population, which includes these contaminating NK1.1(+) CD8(+) T cells. An unresolved question is whether NK1.1(+) CD8(+) cells are conventional T cells that acquire NK1.1 expression upon activation or delineation into memory phenotype or whether they are a distinct cell population that induces immune responses in a different manner than conventional T cells. To address this question, we used the Listeria monocytogenes model of infection and followed CD8(+) NK1.1(+) T cells and NK1.1(-) CD8(+) T cells during each phase of the immune response: innate, effector, and memory. Our central finding is that CD8(+) NK1.1(+) cells and conventional NK1.1(-) CD8(+) T cells both contribute to the adaptive immune response to Listeria, but only CD8(+) NK1.1(+) cells were equipped with the ability to provide a rapid innate immune response, as demonstrated by early and Ag-independent IFN-γ production, granzyme B expression, and degranulation. More importantly, purified conventional CD8(+) T cells alone, in the absence of any contaminating CD8(+) NK1.1(+) cells, were not sufficient to provide early protection to lethally infected mice. These results highlight the role of CD8(+) NK1.1(+) T cells in mounting early innate responses that are important for host defense and support the therapeutic potential of this subset to improve the effectiveness of protective immunity.
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Affiliation(s)
- Sergey S Seregin
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109; and
| | - Grace Y Chen
- Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Yasmina Laouar
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109; and
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13
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Epstein-Barr virus-induced gene 3 (EBI3) polymorphisms and expression are associated with susceptibility to pulmonary tuberculosis. Tuberculosis (Edinb) 2015; 95:497-504. [PMID: 25937126 DOI: 10.1016/j.tube.2015.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 03/21/2015] [Indexed: 11/23/2022]
Abstract
Tuberculosis (TB) remains a major global health problem and host genetic factors play a critical role in susceptibility and resistance to TB. The aim of this study was to identify novel candidate genes associated with TB susceptibility. We performed a population-based case-control study to genotype 13 tag SNPs spanning Epstein-Barr virus-induced gene 3 (EBI3), colony stimulating factor 2 (CSF2), IL-4, interferon beta 1 (IFNB1), chemokine (C-X-C motif) ligand 14 (CXCL14) and myeloid differentiation primary response gene 88 (Myd88) genes in 435 pulmonary TB patients and 375 health donors from China. We observed that EBI3 gene rs4740 polymorphism was associated with susceptibility to pulmonary tuberculosis (PTB) and the allele G was associated with a protective effect against PTB. Furthermore, EBI3 deficiency led to reduced bacterial burden and histopathological impairment in the lung of mice infected with Mycobacterium bovis BCG. Meanwhile, higher abundance of EBI3 was observed in the granuloma of PTB patients and in the lung tissue of BCG-infected mice. Of note, the expression of EBI3 in macrophages was remarkably induced by mycobacteria infection at both mRNA and protein level. In conclusion, EBI3 gene rs4740 polymorphism is closely associated with susceptibility to PTB and the elevation and enrichment of EBI3 in the lung which at least partially derived from macrophages may contribute to the exacerbation of mycobacterial infection.
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