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Belean A, Xue E, Cisneros B, Roberson EDO, Paley MA, Bigley TM. Transcriptomic profiling of thymic dysregulation and viral tropism after neonatal roseolovirus infection. Front Immunol 2024; 15:1375508. [PMID: 38895117 PMCID: PMC11183875 DOI: 10.3389/fimmu.2024.1375508] [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: 01/23/2024] [Accepted: 05/10/2024] [Indexed: 06/21/2024] Open
Abstract
Introduction Herpesviruses, including the roseoloviruses, have been linked to autoimmune disease. The ubiquitous and chronic nature of these infections have made it difficult to establish a causal relationship between acute infection and subsequent development of autoimmunity. We have shown that murine roseolovirus (MRV), which is highly related to human roseoloviruses, induces thymic atrophy and disruption of central tolerance after neonatal infection. Moreover, neonatal MRV infection results in development of autoimmunity in adult mice, long after resolution of acute infection. This suggests that MRV induces durable immune dysregulation. Methods In the current studies, we utilized single-cell RNA sequencing (scRNAseq) to study the tropism of MRV in the thymus and determine cellular processes in the thymus that were disrupted by neonatal MRV infection. We then utilized tropism data to establish a cell culture system. Results Herein, we describe how MRV alters the thymic transcriptome during acute neonatal infection. We found that MRV infection resulted in major shifts in inflammatory, differentiation and cell cycle pathways in the infected thymus. We also observed shifts in the relative number of specific cell populations. Moreover, utilizing expression of late viral transcripts as a proxy of viral replication, we identified the cellular tropism of MRV in the thymus. This approach demonstrated that double negative, double positive, and CD4 single positive thymocytes, as well as medullary thymic epithelial cells were infected by MRV in vivo. Finally, by applying pseudotime analysis to viral transcripts, which we refer to as "pseudokinetics," we identified viral gene transcription patterns associated with specific cell types and infection status. We utilized this information to establish the first cell culture systems susceptible to MRV infection in vitro. Conclusion Our research provides the first complete picture of roseolovirus tropism in the thymus after neonatal infection. Additionally, we identified major transcriptomic alterations in cell populations in the thymus during acute neonatal MRV infection. These studies offer important insight into the early events that occur after neonatal MRV infection that disrupt central tolerance and promote autoimmune disease.
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Affiliation(s)
- Andrei Belean
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Eden Xue
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
| | - Benjamin Cisneros
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
| | - Elisha D. O. Roberson
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, United States
| | - Michael A. Paley
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
| | - Tarin M. Bigley
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States
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2
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Kemter AM, Patry RT, Arnold J, Hesser LA, Campbell E, Ionescu E, Mimee M, Wang S, Nagler CR. Commensal bacteria signal through TLR5 and AhR to improve barrier integrity and prevent allergic responses to food. Cell Rep 2023; 42:113153. [PMID: 37742185 PMCID: PMC10697505 DOI: 10.1016/j.celrep.2023.113153] [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: 11/30/2022] [Revised: 08/07/2023] [Accepted: 09/01/2023] [Indexed: 09/26/2023] Open
Abstract
The increasing prevalence of food allergies has been linked to reduced commensal microbial diversity. In this article, we describe two features of allergy-protective Clostridia that contribute to their beneficial effects. Some Clostridial taxa bear flagella (a ligand for TLR5) and produce indole (a ligand for the aryl hydrocarbon receptor [AhR]). Lysates and flagella from a Clostridia consortium induced interleukin-22 (IL-22) secretion from ileal explants. IL-22 production is abrogated in explants from mice in which TLR5 or MyD88 signaling is deficient either globally or conditionally in CD11c+ antigen-presenting cells. AhR signaling in RORγt+ cells is necessary for the induction of IL-22. Mice deficient in AhR in RORγt+ cells exhibit increased intestinal permeability and are more susceptible to an anaphylactic response to food. Our findings implicate TLR5 and AhR signaling in a molecular mechanism by which commensal Clostridia protect against allergic responses to food.
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Affiliation(s)
- Andrea M Kemter
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA
| | - Robert T Patry
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA
| | - Jack Arnold
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA
| | - Lauren A Hesser
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA
| | - Evelyn Campbell
- Committee on Microbiology, The University of Chicago, Chicago, IL 60637, USA
| | - Edward Ionescu
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA
| | - Mark Mimee
- Department of Microbiology, The University of Chicago, Chicago, IL 60637, USA; Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; Committee on Microbiology, The University of Chicago, Chicago, IL 60637, USA
| | - Shan Wang
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA
| | - Cathryn R Nagler
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA; Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; Committee on Immunology, The University of Chicago, Chicago, IL 60637, USA.
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3
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Zelenka T, Papamatheakis DA, Tzerpos P, Panagopoulos G, Tsolis KC, Papadakis VM, Mariatos Metaxas D, Papadogkonas G, Mores E, Kapsetaki M, Papamatheakis J, Stanek D, Spilianakis C. A novel SATB1 protein isoform with different biophysical properties. Front Cell Dev Biol 2023; 11:1242481. [PMID: 37635874 PMCID: PMC10457122 DOI: 10.3389/fcell.2023.1242481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 07/21/2023] [Indexed: 08/29/2023] Open
Abstract
Intra-thymic T cell development is coordinated by the regulatory actions of SATB1 genome organizer. In this report, we show that SATB1 is involved in the regulation of transcription and splicing, both of which displayed deregulation in Satb1 knockout murine thymocytes. More importantly, we characterized a novel SATB1 protein isoform and described its distinct biophysical behavior, implicating potential functional differences compared to the commonly studied isoform. SATB1 utilized its prion-like domains to transition through liquid-like states to aggregated structures. This behavior was dependent on protein concentration as well as phosphorylation and interaction with nuclear RNA. Notably, the long SATB1 isoform was more prone to aggregate following phase separation. Thus, the tight regulation of SATB1 isoforms expression levels alongside with protein post-translational modifications, are imperative for SATB1's mode of action in T cell development. Our data indicate that deregulation of these processes may also be linked to disorders such as cancer.
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Affiliation(s)
- Tomas Zelenka
- Department of Biology, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - Dionysios-Alexandros Papamatheakis
- Department of Biology, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - Petros Tzerpos
- Department of Biology, University of Crete, Heraklion, Crete, Greece
| | | | - Konstantinos C. Tsolis
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - Vassilis M. Papadakis
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | | | - George Papadogkonas
- Department of Biology, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - Eleftherios Mores
- Department of Biology, University of Crete, Heraklion, Crete, Greece
| | - Manouela Kapsetaki
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - Joseph Papamatheakis
- Department of Biology, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
| | - David Stanek
- Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Charalampos Spilianakis
- Department of Biology, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology—Foundation for Research and Technology Hellas, Heraklion, Crete, Greece
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4
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Hall JA, Pokrovskii M, Kroehling L, Kim BR, Kim SY, Wu L, Lee JY, Littman DR. Transcription factor RORα enforces stability of the Th17 cell effector program by binding to a Rorc cis-regulatory element. Immunity 2022; 55:2027-2043.e9. [PMID: 36243007 DOI: 10.1016/j.immuni.2022.09.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/05/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022]
Abstract
T helper 17 (Th17) cells regulate mucosal barrier defenses but also promote multiple autoinflammatory diseases. Although many molecular determinants of Th17 cell differentiation have been elucidated, the transcriptional programs that sustain Th17 cells in vivo remain obscure. The transcription factor RORγt is critical for Th17 cell differentiation; however, it is not clear whether the closely related RORα, which is co-expressed in Th17 cells, has a distinct role. Here, we demonstrated that although dispensable for Th17 cell differentiation, RORα was necessary for optimal Th17 responses in peripheral tissues. The absence of RORα in T cells led to reductions in both RORγt expression and effector function among Th17 cells. Cooperative binding of RORα and RORγt to a previously unidentified Rorc cis-regulatory element was essential for Th17 lineage maintenance in vivo. These data point to a non-redundant role of RORα in Th17 lineage maintenance via reinforcement of the RORγt transcriptional program.
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Affiliation(s)
- Jason A Hall
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA
| | - Maria Pokrovskii
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA
| | - Lina Kroehling
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA
| | - Bo-Ram Kim
- Department of Microbiology and Immunology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Seung Yong Kim
- Department of Microbiology and Immunology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Lin Wu
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA
| | - June-Yong Lee
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA; Department of Microbiology and Immunology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Dan R Littman
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA; Howard Hughes Medical Institute, New York, NY 10016, USA.
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5
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Sun R, Lei C, Chen L, He L, Guo H, Zhang X, Feng W, Yan J, McClain CJ, Deng Z. Alcohol-driven metabolic reprogramming promotes development of RORγt-deficient thymic lymphoma. Oncogene 2022; 41:2287-2302. [PMID: 35246617 PMCID: PMC9018612 DOI: 10.1038/s41388-022-02257-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 11/23/2022]
Abstract
RORγt is a master regulator of Th17 cells. Despite evidence
linking RORγt deficiency/inhibition with metastatic thymic T cell
lymphomas, the role of RORγt in lymphoma metabolism is unknown. Chronic
alcohol consumption plays a causal role in many human cancers. The risk of T
cell lymphoma remains unclear in humans with alcohol use disorders (AUD) after
chronic RORγt inhibition. Here we demonstrated that alcohol consumption
accelerates RORγt deficiency-induced lymphomagenesis. Loss of
RORγt signaling in the thymus promotes aerobic glycolysis and
glutaminolysis and increases allocation of glutamine carbon into lipids.
Importantly, alcohol consumption results in a shift from aerobic glycolysis to
glutaminolysis. Both RORγt deficiency- and alcohol-induced metabolic
alterations are mediated by c-Myc, as silencing of c-Myc decreases the effects
of alcohol consumption and RORγt deficiency on glutaminolysis,
biosynthesis, and tumor growth in vivo. The ethanol-mediated c-Myc activation
coupled with increased glutaminolysis underscore the critical role of
RORγt-Myc signaling and translation in lymphoma.
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Affiliation(s)
- Rui Sun
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA.,Department of Oncology, Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430033, China.,Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Chao Lei
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA.,Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Liang Chen
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA.,Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Liqing He
- Department of Chemistry, University of Louisville, Louisville, KY, USA
| | - Haixun Guo
- Department of Radiology, University of Louisville, Louisville, KY, USA
| | - Xiang Zhang
- Department of Chemistry, University of Louisville, Louisville, KY, USA.,Alcohol Research Center, University of Louisville, Louisville, KY, USA.,Hepatobiology & Toxicology Center, University of Louisville, Louisville, KY, USA
| | - Wenke Feng
- Alcohol Research Center, University of Louisville, Louisville, KY, USA.,Hepatobiology & Toxicology Center, University of Louisville, Louisville, KY, USA.,Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Jun Yan
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA.,Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Craig J McClain
- Alcohol Research Center, University of Louisville, Louisville, KY, USA.,Hepatobiology & Toxicology Center, University of Louisville, Louisville, KY, USA.,Department of Medicine, University of Louisville, Louisville, KY, USA.,Robley Rex VA Medical Center, Louisville, KY, USA
| | - Zhongbin Deng
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA. .,Brown Cancer Center, University of Louisville, Louisville, KY, USA. .,Alcohol Research Center, University of Louisville, Louisville, KY, USA. .,Hepatobiology & Toxicology Center, University of Louisville, Louisville, KY, USA.
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6
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Stehle C, Rückert T, Fiancette R, Gajdasik DW, Willis C, Ulbricht C, Durek P, Mashreghi MF, Finke D, Hauser AE, Withers DR, Chang HD, Zimmermann J, Romagnani C. T-bet and RORα control lymph node formation by regulating embryonic innate lymphoid cell differentiation. Nat Immunol 2021; 22:1231-1244. [PMID: 34556887 PMCID: PMC7614953 DOI: 10.1038/s41590-021-01029-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 08/12/2021] [Indexed: 11/09/2022]
Abstract
The generation of lymphoid tissues during embryogenesis relies on group 3 innate lymphoid cells (ILC3) displaying lymphoid tissue inducer (LTi) activity and expressing the master transcription factor RORγt. Accordingly, RORγt-deficient mice lack ILC3 and lymphoid structures, including lymph nodes (LN). Whereas T-bet affects differentiation and functions of ILC3 postnatally, the role of T-bet in regulating fetal ILC3 and LN formation remains completely unknown. Using multiple mouse models and single-cell analyses of fetal ILCs and ILC progenitors (ILCP), here we identify a key role for T-bet during embryogenesis and show that its deficiency rescues LN formation in RORγt-deficient mice. Mechanistically, T-bet deletion skews the differentiation fate of fetal ILCs and promotes the accumulation of PLZFhi ILCP expressing central LTi molecules in a RORα-dependent fashion. Our data unveil an unexpected role for T-bet and RORα during embryonic ILC function and highlight that RORγt is crucial in counteracting the suppressive effects of T-bet.
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Affiliation(s)
- Christina Stehle
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Timo Rückert
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Rémi Fiancette
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Dominika W Gajdasik
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Claire Willis
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Carolin Ulbricht
- Immune Dynamics, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Rheumatology and Clinical Immunology, Berlin, Germany
| | - Pawel Durek
- Cell Biology, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Mir-Farzin Mashreghi
- Therapeutic Gene Regulation, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
- Berlin Institute of Health (BIH) at Charité-Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
| | - Daniela Finke
- Department of Biomedicine and University Children's Hospital of Basel, University of Basel, Basel, Switzerland
| | - Anja Erika Hauser
- Immune Dynamics, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Rheumatology and Clinical Immunology, Berlin, Germany
| | - David R Withers
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Hyun-Dong Chang
- Schwiete Laboratory for Microbiota and Inflammation, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
- Department of Cytometry, Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany
| | - Jakob Zimmermann
- Maurice Müller Laboratories, Universitätsklinik für Viszerale Chirurgie und Medizin Inselspital, University of Bern, Bern, Switzerland
| | - Chiara Romagnani
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany.
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Gastroenterology, Infectious Diseases, Rheumatology, Berlin, Germany.
- Leibniz-Science Campus Chronic Inflammation, Berlin, Germany.
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7
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Wei F, Zhou X, Chen H, Tian X, Liu Z, Yu B, He X, Bai C, Huang Z. 5,6,7,8-Tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine derivative attenuates lupus nephritis with less effect to thymocyte development. Immunol Res 2021; 69:378-390. [PMID: 34219199 DOI: 10.1007/s12026-021-09204-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 05/10/2021] [Indexed: 12/12/2022]
Abstract
Retinoic‑acid‑receptor‑related orphan nuclear hormone receptor gamma t (RORγt), a critical transcriptional factor of Th17 cells, is a potential therapeutic target for Th17-mediated autoimmune diseases. In addition, RORγt is essential for thymocyte survival and lymph node development, and RORγt inhibition or deficiency causes abnormal thymocyte development, thymus lymphoma, and lymph node defect. Recent study demonstrated that specific regulation of Th17 differentiation related to the hinge region of RORγt. In this research, we investigated the effect of RORγt inhibitor, 5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine derivative (TTP), in the therapy of lupus nephritis and its safety on thymocyte development. We demonstrated that TTP repressed the development of Th17 cells and ameliorated the autoimmune disease manifestation in the pristane-induced lupus nephritis mice model. The treatment of TTP in the mice did not interfere with thymocyte development, including total thymocyte number and proportion of CD4+CD8+ double-positive populations in the thymus, and had no substantial effects on the pathogenesis of thymoma. The TTP had a stronger affinity with full-length RORγt protein compared with the truncated RORγt LBD region via surface plasmon resonance, which indicated TTP binding to RORγt beyond LBD region. Molecular docking computation showed that the best binding pocket of TTP to RORγt is located in the hinge region of RORγt. In summary, as a RORγt inhibitor, TTP had a potential to develop the clinical medicine for treating Th17-mediated autoimmune diseases with low safety risk for thymocyte development.
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Affiliation(s)
- Fengjiao Wei
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoqing Zhou
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Huanpeng Chen
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Xuyan Tian
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Zhonghua Liu
- Animal Experiment Center, South China Agricultural University, Guangzhou, China
| | - Bolan Yu
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Third Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
| | - Xixin He
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chuan Bai
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China.
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
| | - Zhaofeng Huang
- Institute of Human Virology, Sun Yat-Sen University, Guangzhou, China.
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
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8
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Li Y, Li K, Zhu L, Li B, Zong D, Cai P, Jiang C, Du P, Lin J, Qu K. Development of double-positive thymocytes at single-cell resolution. Genome Med 2021; 13:49. [PMID: 33771202 PMCID: PMC8004397 DOI: 10.1186/s13073-021-00861-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 02/25/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND T cells generated from thymopoiesis are essential for the immune system, and recent single-cell studies have contributed to our understanding of the development of thymocytes at the genetic and epigenetic levels. However, the development of double-positive (DP) T cells, which comprise the majority of thymocytes, has not been well investigated. METHODS We applied single-cell sequencing to mouse thymocytes and analyzed the transcriptome data using Seurat. By applying unsupervised clustering, we defined thymocyte subtypes and validated DP cell subtypes by flow cytometry. We classified the cell cycle phases of each cell according to expression of cell cycle phase-specific genes. For immune synapse detection, we used immunofluorescent staining and ImageStream-based flow cytometry. We studied and integrated human thymocyte data to verify the conservation of our findings and also performed cross-species comparisons to examine species-specific gene regulation. RESULTS We classified blast, rearrangement, and selection subtypes of DP thymocytes and used the surface markers CD2 and Ly6d to identify these subtypes by flow cytometry. Based on this new classification, we found that the proliferation of blast DP cells is quite different from that of double-positive cells and other cell types, which tend to exit the cell cycle after a single round. At the DP cell selection stage, we observed that CD8-associated immune synapses formed between thymocytes, indicating that CD8sp selection occurred among thymocytes themselves. Moreover, cross-species comparison revealed species-specific transcription factors (TFs) that contribute to the transcriptional differences of thymocytes from humans and mice. CONCLUSIONS Our study classified DP thymocyte subtypes of different developmental stages and provided new insight into the development of DP thymocytes at single-cell resolution, furthering our knowledge of the fundamental immunological process of thymopoiesis.
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Affiliation(s)
- Young Li
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Kun Li
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Lianbang Zhu
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Bin Li
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Dandan Zong
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Pengfei Cai
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Chen Jiang
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Pengcheng Du
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Jun Lin
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China
| | - Kun Qu
- Department of oncology, The First Affiliated Hospital of USTC, Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medicine, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230021, Anhui, China.
- The CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Sciences, University of Science and Technology of China, Hefei, 230021, Anhui, China.
- School of Data Science, University of Science and Technology of China, Hefei, 230027, Anhui, China.
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9
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Spinner CA, Lazarevic V. Transcriptional regulation of adaptive and innate lymphoid lineage specification. Immunol Rev 2020; 300:65-81. [PMID: 33615514 DOI: 10.1111/imr.12935] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/26/2020] [Accepted: 11/16/2020] [Indexed: 12/28/2022]
Abstract
Once alerted to the presence of a pathogen, activated CD4+ T cells initiate distinct gene expression programs that produce multiple functionally specialized T helper (Th) subsets. The cytokine milieu present at the time of antigen encounter instructs CD4+ T cells to differentiate into interferon-(IFN)-γ-producing Th1 cells, interleukin-(IL)-4-producing Th2 cells, IL-17-producing Th17 cells, follicular T helper (Tfh) cells, or regulatory T (Treg) cells. In each of these Th cell subsets, a single transcription factor has been identified as a critical regulator of its specialized differentiation program. In this context, the expression of the "master regulator" is necessary and sufficient to activate lineage-specific genes while restricting the gene expression program of alternative Th fates. Thus, the transcription factor T-bet controls Th1 differentiation program, while the development of Th2, Th17, Tfh, and Treg cells is dependent on transcription factors GATA3, RORγt, Bcl6, and Foxp3, respectively. Nevertheless, master regulators or, more precisely, lineage-defining transcription factors do not function in isolation. In fact, they interact with a complex network of transcription factors, orchestrating cell lineage specification programs. In this review, we discuss the concept of the combinatorial interactions of key transcription factors in determining helper T cell identity. Additionally, lineage-defining transcription factors have well-established functions beyond their role in CD4+ Th subsets. They play critically important functions at distinct stages during T cell development in the thymus and they control the development of innate lymphoid cells (ILCs) in the bone marrow. In tracking the journey of T cells traversing from the thymus to the periphery and during the immune response, we discuss in broad terms developmental stage and context-dependent functions of lineage-defining transcription factors in regulating specification programs of innate and adaptive lymphocytes.
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Affiliation(s)
- Camille A Spinner
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Vanja Lazarevic
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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10
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Klibi J, Li S, Amable L, Joseph C, Brunet S, Delord M, Parietti V, Jaubert J, Marie J, Karray S, Eberl G, Lucas B, Toubert A, Benlagha K. Characterization of the developmental landscape of murine RORγt+ iNKT cells. Int Immunol 2020; 32:105-116. [PMID: 31565740 DOI: 10.1093/intimm/dxz064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 09/26/2019] [Indexed: 12/15/2022] Open
Abstract
Invariant natural killer T (iNKT) cells expressing the retinoic acid receptor-related orphan receptor γt (RORγt) and producing IL-17 represent a minor subset of CD1d-restricted iNKT cells (iNKT17) in C57BL/6J (B6) mice. We aimed in this study to define the reasons for their low distribution and the sequence of events accompanying their normal thymic development. We found that RORγt+ iNKT cells have higher proliferation potential and a greater propensity to apoptosis than RORγt- iNKT cells. These cells do not likely reside in the thymus indicating that thymus emigration, and higher apoptosis potential, could contribute to RORγt+ iNKT cell reduced thymic distribution. Ontogeny studies suggest that mature HSAlow RORγt+ iNKT cells might develop through developmental stages defined by a differential expression of CCR6 and CD138 during which RORγt expression and IL-17 production capabilities are progressively acquired. Finally, we found that RORγt+ iNKT cells perceive a strong TCR signal that could contribute to their entry into a specific 'Th17 like' developmental program influencing their survival and migration. Overall, our study proposes a hypothetical thymic developmental sequence for iNKT17 cells, which could be of great use to study molecular mechanisms regulating this developmental program.
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Affiliation(s)
- Jihene Klibi
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Shamin Li
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Ludivine Amable
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Claudine Joseph
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Stéphane Brunet
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Marc Delord
- Plateforme de Bioinformatique et Biostatistique, Institut Universitaire d'Hématologie, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Veronique Parietti
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Département d'Expérimentation Animale, Institut Universitaire d'Hématologie, Paris, France
| | - Jean Jaubert
- Mouse Genetics Unit, Institut Pasteur, Paris, France
| | - Julien Marie
- Department of Immunology, Virology and Inflammation, Cancer Research Center of Lyon UMR INSERM1052, CNRS 5286, Centre Léon Bérard Hospital, Université de Lyon, Equipe labellisée LIGUE, Lyon, France
| | - Saoussen Karray
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Gerard Eberl
- Microenvironment &Immunity Unit, Institut Pasteur, Paris, France.,INSERM U1224, Paris, France
| | - Bruno Lucas
- Institut Cochin, Centre National de la Recherche Scientifique UMR8104, INSERM U1016, Université Paris Descartes, Paris, France
| | - Antoine Toubert
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Kamel Benlagha
- INSERM, UMR-1160, Institut Universitaire d'Hématologie, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
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11
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Aihara R, Kunimura K, Watanabe M, Uruno T, Yamane N, Sakurai T, Sakata D, Nishimura F, Fukui Y. DOCK8 controls survival of group 3 innate lymphoid cells in the gut through Cdc42 activation. Int Immunol 2020; 33:149-160. [PMID: 32986079 DOI: 10.1093/intimm/dxaa066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Innate lymphoid cells (ILCs) are a family of developmentally related leukocytes that rapidly secrete polarized sets of cytokines to combat infection and promote tissue repair at mucosal barriers. Among them, group 3 ILCs (ILC3s) play an important role in maintenance of the gut homeostasis by producing IL-22, and their development and function critically depend on the transcription factor RORγt. Although recent evidence indicates that RORγt+ ILC3s are reduced in the gut in the absence of the Cdc42 activator DOCK8 (dedicator of cytokinesis 8), the underlying mechanism remains unclear. We found that genetic deletion of Dock8 in RORγt+-lineage cells markedly reduced ILC3s in the lamina propria of the small intestine. By analyzing BrdU incorporation, it was revealed that DOCK8 deficiency did not affect the cell proliferation. Furthermore, when lineage marker-negative (Lin-) α4β7+ CD127+ RORγt- fetal liver cells were cultured with OP9 stromal cells in the presence of stem cell factor (SCF) and IL-7 in vitro, RORγt+ ILC3s normally developed irrespective of DOCK8 expression. However, DOCK8-deficient ILC3s exhibited a severe defect in survival of ILC3s under the condition with or without IL-7. Similar defects were observed when we analyzed Dock8VAGR mice having mutations in the catalytic center of DOCK8, thereby failing to activate Cdc42. Thus, DOCK8 acts in cell-autonomous manner to control survival of ILC3s in the gut through Cdc42 activation.
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Affiliation(s)
- Ryosuke Aihara
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation.,Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Kazufumi Kunimura
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Mayuki Watanabe
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Takehito Uruno
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Nana Yamane
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Tetsuya Sakurai
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Daiji Sakata
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Fusanori Nishimura
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
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12
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Yahia-Cherbal H, Rybczynska M, Lovecchio D, Stephen T, Lescale C, Placek K, Larghero J, Rogge L, Bianchi E. NFAT primes the human RORC locus for RORγt expression in CD4 + T cells. Nat Commun 2019; 10:4698. [PMID: 31619674 PMCID: PMC6795897 DOI: 10.1038/s41467-019-12680-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 09/24/2019] [Indexed: 02/07/2023] Open
Abstract
T helper 17 (Th17) cells have crucial functions in mucosal immunity and the pathogenesis of several chronic inflammatory diseases. The lineage-specific transcription factor, RORγt, encoded by the RORC gene modulates Th17 polarization and function, as well as thymocyte development. Here we define several regulatory elements at the human RORC locus in thymocytes and peripheral CD4+ T lymphocytes, with CRISPR/Cas9-guided deletion of these genomic segments supporting their role in RORγt expression. Mechanistically, T cell receptor stimulation induces cyclosporine A-sensitive histone modifications and P300/CBP acetylase recruitment at these elements in activated CD4+ T cells. Meanwhile, NFAT proteins bind to these regulatory elements and activate RORγt transcription in cooperation with NF-kB. Our data thus demonstrate that NFAT specifically regulate RORγt expression by binding to the RORC locus and promoting its permissive conformation. The master transcription factor RORγt, encoded by the RORC gene, controls the polarization of CD4+ T cells expressing interleukin-17 (Th17). Here the authors describe several regulatory elements at the RORC locus that are recognized by NFAT and NFkB to induce a permissive epigenetic configuration of the RORC gene for RORγt expression and Th17 differentiation.
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Affiliation(s)
- Hanane Yahia-Cherbal
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Cellule Pasteur, Paris, France
| | - Magda Rybczynska
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France.,Laboratoire Colloides et Matériaux Divisés, École supérieure de Physique et de Chimie industrielles, Paris, France
| | - Domenica Lovecchio
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France
| | - Tharshana Stephen
- Institut Pasteur, Unité de Technologie et Service Cytométrie et Biomarqueurs (UTechS CB), Centre de recherche translationnelle (CRT), Paris, France
| | - Chloé Lescale
- Institut Pasteur, Genome Integrity, Immunity and Cancer Unit, Equipe Labellisée Ligue Contre le Cancer, Department of Immunology, Department of Genomes and Genetics, Paris, France
| | - Katarzyna Placek
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France.,Immunology and Metabolism, LIMES Institute, University of Bonn, Bonn, Germany
| | - Jérome Larghero
- Assistance Publique-Hopitaux de Paris, Hôpital Saint-Louis, Cell Therapy Unit and Cord Blood Bank; CIC de Biothérapies, CBT501, Paris, France
| | - Lars Rogge
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France
| | - Elisabetta Bianchi
- Institut Pasteur, Immunoregulation Unit, Department of Immunology, Paris, France.
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13
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Abstract
During thymocyte development at the double positive stage, thymocytes are subjected to a TCR quality check process termed "thymocyte selection." TCRs with proper binding capabilities to MHC molecules (with self-peptide) are able to transduce cell survival signals and allow the continuing of development to single positive T cells. It has been known that TCRs in DP cells can transduce signals with higher efficiency than peripheral mature T cells, even though they share most of the signaling components. Recent studies have revealed some thymocyte-specific signaling modulators including Themis and Tespa1. The activation of TCR signaling during positive selection results in the activation of several key transcription factors and extensive gene expression change, which has been revealed by newly developed systemic transcriptome analysis tools, and could be used for the evaluation of positive selection process. The fate determination postpositive selection is also governed on the epigenetic level including both DNA methylation and histone modifications.
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Affiliation(s)
- Jun Lyu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Lie Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Linrong Lu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China; Zhejiang University-University of Edinburgh Institute, Zhejiang University, Haining, China; Department of Dermatology and Rheumatology in Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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14
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Mielke LA, Liao Y, Clemens EB, Firth MA, Duckworth B, Huang Q, Almeida FF, Chopin M, Koay HF, Bell CA, Hediyeh-Zadeh S, Park SL, Raghu D, Choi J, Putoczki TL, Hodgkin PD, Franks AE, Mackay LK, Godfrey DI, Davis MJ, Xue HH, Bryant VL, Kedzierska K, Shi W, Belz GT. TCF-1 limits the formation of Tc17 cells via repression of the MAF-RORγt axis. J Exp Med 2019; 216:1682-1699. [PMID: 31142588 PMCID: PMC6605755 DOI: 10.1084/jem.20181778] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 03/09/2019] [Accepted: 04/26/2019] [Indexed: 01/06/2023] Open
Abstract
Mielke et al. show that TCF-1 limits IL-17–producing CD8+ T (Tc17) cell development from double-positive thymocytes through the sequential suppression of MAF and RORγt, while cementing conventional CD8+ T cell fate. Interleukin (IL)-17–producing CD8+ T (Tc17) cells have emerged as key players in host-microbiota interactions, infection, and cancer. The factors that drive their development, in contrast to interferon (IFN)-γ–producing effector CD8+ T cells, are not clear. Here we demonstrate that the transcription factor TCF-1 (Tcf7) regulates CD8+ T cell fate decisions in double-positive (DP) thymocytes through the sequential suppression of MAF and RORγt, in parallel with TCF-1–driven modulation of chromatin state. Ablation of TCF-1 resulted in enhanced Tc17 cell development and exposed a gene set signature to drive tissue repair and lipid metabolism, which was distinct from other CD8+ T cell subsets. IL-17–producing CD8+ T cells isolated from healthy humans were also distinct from CD8+IL-17− T cells and enriched in pathways driven by MAF and RORγt. Overall, our study reveals how TCF-1 exerts central control of T cell differentiation in the thymus by normally repressing Tc17 differentiation and promoting an effector fate outcome.
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Affiliation(s)
- Lisa A Mielke
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia.,Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Australia
| | - Yang Liao
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Ella Bridie Clemens
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Matthew A Firth
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Brigette Duckworth
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Qiutong Huang
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Francisca F Almeida
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Michael Chopin
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Hui-Fern Koay
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Melbourne, Australia
| | - Carolyn A Bell
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Australia
| | | | - Simone L Park
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Dinesh Raghu
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Australia
| | - Jarny Choi
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Australia
| | - Tracy L Putoczki
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Philip D Hodgkin
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Ashley E Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Australia.,Centre for Future Landscapes, La Trobe University, Bundoora, Australia
| | - Laura K Mackay
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Dale I Godfrey
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Melbourne, Australia
| | - Melissa J Davis
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia.,Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia
| | - Hai-Hui Xue
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA
| | - Vanessa L Bryant
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Australia.,Department of Clinical Immunology & Allergy, The Royal Melbourne Hospital, Parkville, Australia
| | - Katherine Kedzierska
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Wei Shi
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Computing and Information Systems, University of Melbourne, Parkville, Australia
| | - Gabrielle T Belz
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia .,Department of Medical Biology, University of Melbourne, Parkville, Australia
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15
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Philips RL, McCue SA, Rajcula MJ, Shapiro VS. Cutting Edge: HDAC3 Protects Double-Positive Thymocytes from P2X7 Receptor-Induced Cell Death. THE JOURNAL OF IMMUNOLOGY 2019; 202:1033-1038. [PMID: 30626694 DOI: 10.4049/jimmunol.1801438] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/10/2018] [Indexed: 11/19/2022]
Abstract
Intricate life-versus-death decisions are programmed during T cell development, and the regulatory mechanisms that coordinate their activation and repression are still under investigation. In this study, HDAC3-deficient double-positive (DP) thymocytes exhibit a severe decrease in numbers. The thymic cortex is rich in ATP, which is released by macrophages that clear apoptotic DP thymocytes that fail to undergo positive selection. We demonstrate that HDAC3 is required to repress expression of the purinergic receptor P2X7 to prevent DP cell death. HDAC3-deficient DP thymocytes upregulate the P2X7 receptor, increasing sensitivity to ATP-induced cell death. P2rx7/HDAC3-double knockout mice show a partial rescue in DP cell number. HDAC3 directly binds to the P2rx7 enhancer, which is hyperacetylated in the absence of HDAC3. In addition, RORγt binds to the P2rx7 enhancer and promotes P2X7 receptor expression in the absence of HDAC3. Therefore, HDAC3 is a critical regulator of DP thymocyte survival and is required to suppress P2X7 receptor expression.
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16
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Müller L, Hainberger D, Stolz V, Ellmeier W. NCOR1-a new player on the field of T cell development. J Leukoc Biol 2018; 104:1061-1068. [PMID: 30117609 DOI: 10.1002/jlb.1ri0418-168r] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/18/2018] [Accepted: 07/21/2018] [Indexed: 12/27/2022] Open
Abstract
Nuclear receptor corepressor 1 (NCOR1) is a transcriptional corepressor that links chromatin-modifying enzymes with gene-specific transcription factors. Although identified more than 20 years ago as a corepressor of nuclear receptors, the role of NCOR1 in T cells remained only poorly understood. However, recent studies indicate that the survival of developing thymocytes is regulated by NCOR1, revealing an essential role for NCOR1 in the T cell lineage. In this review, we will briefly summarize basic facts about NCOR1 structure and functions. We will further summarize studies demonstrating an essential role for NCOR1 in controlling positive and negative selection of thymocytes during T cell development. Finally, we will discuss similarities and differences between the phenotypes of mice with a T cell-specific deletion of NCOR1 or histone deacetylase 3 (HDAC3), because HDAC3 is the predominant member of the HDAC family that interacts with NCOR1 corepressor complexes. With this review we aim to introduce NCOR1 as a new player in the team of transcriptional coregulators that control T cell development and thus the generation of the peripheral T cell pool.
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Affiliation(s)
- Lena Müller
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Daniela Hainberger
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Valentina Stolz
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Wilfried Ellmeier
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
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17
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Guo Y, MacIsaac KD, Chen Y, Miller RJ, Jain R, Joyce-Shaikh B, Ferguson H, Wang IM, Cristescu R, Mudgett J, Engstrom L, Piers KJ, Baltus GA, Barr K, Zhang H, Mehmet H, Hegde LG, Hu X, Carter LL, Aicher TD, Glick G, Zaller D, Hawwari A, Correll CC, Jones DC, Cua DJ. Inhibition of RORγT Skews TCRα Gene Rearrangement and Limits T Cell Repertoire Diversity. Cell Rep 2017; 17:3206-3218. [PMID: 28009290 DOI: 10.1016/j.celrep.2016.11.073] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 06/20/2016] [Accepted: 11/23/2016] [Indexed: 02/08/2023] Open
Abstract
Recent studies have elucidated the molecular mechanism of RORγT transcriptional regulation of Th17 differentiation and function. RORγT was initially identified as a transcription factor required for thymopoiesis by maintaining survival of CD4+CD8+ (DP) thymocytes. While RORγ antagonists are currently being developed to treat autoimmunity, it remains unclear how RORγT inhibition may impact thymocyte development. In this study, we show that in addition to regulating DP thymocytes survival, RORγT also controls genes that regulate thymocyte migration, proliferation, and T cell receptor (TCR)α selection. Strikingly, pharmacological inhibition of RORγ skews TCRα gene rearrangement, limits T cell repertoire diversity, and inhibits development of autoimmune encephalomyelitis. Thus, targeting RORγT not only inhibits Th17 cell development and function but also fundamentally alters thymic-emigrant recognition of self and foreign antigens. The analysis of RORγ inhibitors has allowed us to gain a broader perspective of the diverse function of RORγT and its impact on T cell biology.
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Affiliation(s)
- Yanxia Guo
- Merck Research Laboratories, 901 California Avenue, Palo Alto, CA 94304, USA
| | - Kenzie D MacIsaac
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Yi Chen
- Merck Research Laboratories, 901 California Avenue, Palo Alto, CA 94304, USA
| | - Richard J Miller
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Renu Jain
- Merck Research Laboratories, 901 California Avenue, Palo Alto, CA 94304, USA
| | | | - Heidi Ferguson
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - I-Ming Wang
- Merck Research Laboratories, 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Razvan Cristescu
- Merck Research Laboratories, 901 California Avenue, Palo Alto, CA 94304, USA
| | - John Mudgett
- Merck Research Laboratories, 2000 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Laura Engstrom
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Kyle J Piers
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Gretchen A Baltus
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Kenneth Barr
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Hongjun Zhang
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Huseyin Mehmet
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | | | - Xiao Hu
- Lycera Corp, 2600 Plymouth Road, Ann Arbor, MI 48109, USA
| | - Laura L Carter
- Lycera Corp, 2600 Plymouth Road, Ann Arbor, MI 48109, USA
| | | | - Gary Glick
- Lycera Corp, 2600 Plymouth Road, Ann Arbor, MI 48109, USA
| | - Dennis Zaller
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Abbas Hawwari
- King Abdullah International Medical Research Center (KAIMRC), King Saud bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City Hospital, Ministry of National Guard Health Affairs, Mail Code 520, P.O. Box 6664, Al Hasa 31982, Kingdom of Saudi Arabia
| | - Craig C Correll
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Dallas C Jones
- Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Daniel J Cua
- Merck Research Laboratories, 901 California Avenue, Palo Alto, CA 94304, USA.
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Liljevald M, Rehnberg M, Söderberg M, Ramnegård M, Börjesson J, Luciani D, Krutrök N, Brändén L, Johansson C, Xu X, Bjursell M, Sjögren AK, Hornberg J, Andersson U, Keeling D, Jirholt J. Retinoid-related orphan receptor γ (RORγ) adult induced knockout mice develop lymphoblastic lymphoma. Autoimmun Rev 2016; 15:1062-1070. [DOI: 10.1016/j.autrev.2016.07.036] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 07/13/2016] [Indexed: 02/08/2023]
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19
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Philips RL, Chen MW, McWilliams DC, Belmonte PJ, Constans MM, Shapiro VS. HDAC3 Is Required for the Downregulation of RORγt during Thymocyte Positive Selection. THE JOURNAL OF IMMUNOLOGY 2016; 197:541-54. [PMID: 27279370 DOI: 10.4049/jimmunol.1502529] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 05/09/2016] [Indexed: 12/31/2022]
Abstract
To generate functional peripheral T cells, proper gene regulation during T cell development is critical. In this study, we found that histone deacetylase (HDAC) 3 is required for T cell development. T cell development in CD2-icre HDAC3 conditional knockout (cKO) mice (HDAC3-cKO) was blocked at positive selection, resulting in few CD4 and CD8 T cells, and it could not be rescued by a TCR transgene. These single-positive thymocytes failed to upregulate Bcl-2, leading to increased apoptosis. HDAC3-cKO mice failed to downregulate retinoic acid-related orphan receptor (ROR) γt during positive selection, similar to the block in positive selection in RORγt transgenic mice. In the absence of HDAC3, the RORC promoter was hyperacetylated. In the periphery, the few CD4 T cells present were skewed toward RORγt(+) IL-17-producing Th17 cells, leading to inflammatory bowel disease. Positive selection of CD8 single-positive thymocytes was restored in RORγt-KO Bcl-xL transgenic HDAC3-cKO mice, demonstrating that HDAC3 is required at positive selection to downregulate RORγt.
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Affiliation(s)
| | - Meibo W Chen
- Department of Immunology, Mayo Clinic, Rochester, MN 55905
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20
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Hsu FC, Shapiro MJ, Dash B, Chen CC, Constans MM, Chung JY, Romero Arocha SR, Belmonte PJ, Chen MW, McWilliams DC, Shapiro VS. An Essential Role for the Transcription Factor Runx1 in T Cell Maturation. Sci Rep 2016; 6:23533. [PMID: 27020276 PMCID: PMC4810436 DOI: 10.1038/srep23533] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 03/08/2016] [Indexed: 12/26/2022] Open
Abstract
The transcription factor Runx1 has essential roles throughout hematopoiesis. Here, we demonstrate that Runx1 is critical for T cell maturation. Peripheral naïve CD4(+) T cells from CD4-cre Runx1 cKO mice are phenotypically and functionally immature as shown by decreased production of TNF-α upon TCR stimulation. The loss of peripheral CD4(+) T cells in CD4-cre Runx1 cKO mice is not due to defects in homeostasis or decreased expression of IL-7Rα, as transgenic expression of IL-7Rα does not rescue the loss of CD4(+) T cells. Rather, immature Runx1-deficient CD4(+) T cells are eliminated in the periphery by the activation and fixation of the classical complement pathway. In the thymus, there is a severe block in all aspects of intrathymic T cell maturation, although both positive and negative selection are unaltered. Thus, loss of Runx1 leads to the earliest characterized block in post-positive selection intrathymic maturation of CD4 T cells.
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Affiliation(s)
- Fan-Chi Hsu
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | | | - Barsha Dash
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Chien-Chang Chen
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Megan M Constans
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Ji Young Chung
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | | | - Paul J Belmonte
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Meibo W Chen
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
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21
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Satoh-Takayama N. Heterogeneity and diversity of group 3 innate lymphoid cells: new cells on the block. Int Immunol 2016; 28:29-34. [PMID: 26462712 DOI: 10.1093/intimm/dxv054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/24/2015] [Indexed: 01/28/2023] Open
Abstract
Innate lymphoid cells (ILCs) are a newly identified subset of innate cells that play fundamentally crucial roles for early immune defense at mucosal and non-mucosal sites. ILCs consist of ILC1s, ILC2s and ILC3s, which each have distinct transcription factors controlling their development and function. Interestingly, each of the ILC subsets represents the innate counterparts of CD4(+) helper T-cell subsets T(h1), T(h2) and T(h17) on the basis of transcriptional regulation. ILC1s that produce IFN-γ or TNF-α, ILC2s that produce T(h2)-type cytokines mainly such as IL-5 or IL-13 and ILC3s have been recently reported and reviewed in terms of IL-22- or IL-17-producing function and cell development. However, in this relatively new field, it remains likely that additional functional and regulatory mechanisms remain to be explored. More recent findings show that ILC3s are regulated by RORγt, which plays an important role for the mucosal barrier and surface protection against pathogenic bacterial infection. ILC3s might cooperate with other cells (e.g. T cells or dendritic cells) directly or indirectly, and subsequently ILC3s have impact on tissues with prompt regulation. Especially, ILC3s in mucosal site are well known to protect the intestinal surface barrier through inducible anti-microbial peptides via IL-22. Here, I will summarize and discuss the roles, function and heterogeneity of ILC3s in mucosal tissues.
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Affiliation(s)
- Naoko Satoh-Takayama
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Science, RIKEN, 1-7-22 Suehiro-cho, Tsurumi, Yokohama city, Kanagawa 230-0045, Japan
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22
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Cook DN, Kang HS, Jetten AM. Retinoic Acid-Related Orphan Receptors (RORs): Regulatory Functions in Immunity, Development, Circadian Rhythm, and Metabolism. NUCLEAR RECEPTOR RESEARCH 2015; 2. [PMID: 26878025 PMCID: PMC4750502 DOI: 10.11131/2015/101185] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In this overview, we provide an update on recent progress made in understanding the mechanisms of action, physiological functions, and roles in disease of retinoic acid related orphan receptors (RORs). We are particularly focusing on their roles in the regulation of adaptive and innate immunity, brain function, retinal development, cancer, glucose and lipid metabolism, circadian rhythm, metabolic and inflammatory diseases and neuropsychiatric disorders. We also summarize the current status of ROR agonists and inverse agonists, including their regulation of ROR activity and their therapeutic potential for management of various diseases in which RORs have been implicated.
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Affiliation(s)
- Donald N Cook
- Immunogenetics Section, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Hong Soon Kang
- Cell Biology Section, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Anton M Jetten
- Cell Biology Section, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
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Identification of an allosteric binding site for RORγt inhibition. Nat Commun 2015; 6:8833. [PMID: 26640126 PMCID: PMC4686831 DOI: 10.1038/ncomms9833] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/08/2015] [Indexed: 01/02/2023] Open
Abstract
RORγt is critical for the differentiation and proliferation of Th17 cells associated with several chronic autoimmune diseases. We report the discovery of a novel allosteric binding site on the nuclear receptor RORγt. Co-crystallization of the ligand binding domain (LBD) of RORγt with a series of small-molecule antagonists demonstrates occupancy of a previously unreported allosteric binding pocket. Binding at this non-canonical site induces an unprecedented conformational reorientation of helix 12 in the RORγt LBD, which blocks cofactor binding. The functional consequence of this allosteric ligand-mediated conformation is inhibition of function as evidenced by both biochemical and cellular studies. RORγt function is thus antagonized in a manner molecularly distinct from that of previously described orthosteric RORγt ligands. This brings forward an approach to target RORγt for the treatment of Th17-mediated autoimmune diseases. The elucidation of an unprecedented modality of pharmacological antagonism establishes a mechanism for modulation of nuclear receptors.
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24
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Rothenberg EV, Ungerbäck J, Champhekar A. Forging T-Lymphocyte Identity: Intersecting Networks of Transcriptional Control. Adv Immunol 2015; 129:109-74. [PMID: 26791859 DOI: 10.1016/bs.ai.2015.09.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
T-lymphocyte development branches off from other lymphoid developmental programs through its requirement for sustained environmental signals through the Notch pathway. In the thymus, Notch signaling induces a succession of T-lineage regulatory factors that collectively create the T-cell identity through distinct steps. This process involves both the staged activation of T-cell identity genes and the staged repression of progenitor-cell-inherited regulatory genes once their roles in self-renewal and population expansion are no longer needed. With the recent characterization of innate lymphoid cells (ILCs) that share transcriptional regulation programs extensively with T-cell subsets, T-cell identity can increasingly be seen as defined in modular terms, as the processes selecting and actuating effector function are potentially detachable from the processes generating and selecting clonally unique T-cell receptor structures. The developmental pathways of different classes of T cells and ILCs are distinguished by the numbers of prerequisites of gene rearrangement, selection, and antigen contact before the cells gain access to nearly common regulatory mechanisms for choosing effector function. Here, the major classes of transcription factors that interact with Notch signals during T-lineage specification are discussed in terms of their roles in these programs, the evidence for their spectra of target genes at different stages, and their cross-regulatory and cooperative actions with each other. Specific topics include Notch modulation of PU.1 and GATA-3, PU.1-Notch competition, the relationship between PU.1 and GATA-3, and the roles of E proteins, Bcl11b, and GATA-3 in guiding acquisition of T-cell identity while avoiding redirection to an ILC fate.
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Affiliation(s)
- Ellen V Rothenberg
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, California, USA.
| | - Jonas Ungerbäck
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, California, USA; Department of Clinical and Experimental Medicine, Experimental Hematopoiesis Unit, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Ameya Champhekar
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California, USA
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Lochner M, Wang Z, Sparwasser T. The Special Relationship in the Development and Function of T Helper 17 and Regulatory T Cells. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 136:99-129. [PMID: 26615094 DOI: 10.1016/bs.pmbts.2015.07.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
T helper 17 (Th17) cells play an essential role in the clearance of extracellular pathogenic bacteria and fungi. However, this subset is critically involved in the pathology of many autoimmune diseases, e.g., psoriasis, multiple sclerosis, allergy, rheumatoid arthritis, and inflammatory bowel diseases in humans. Therefore, Th17 responses need to be tightly regulated in vivo to mediate effective host defenses against pathogens without causing excessive host tissue damage. Foxp3(+) regulatory T (Treg) cells play an important role in maintaining peripheral tolerance to self-antigens and in counteracting the inflammatory activity of effector T helper cell subsets. Although Th17 and Treg cells represent two CD4(+) T cell subsets with opposing principal functions, these cell types are functionally connected. In this review, we will first give an overview on the biology of Th17 cells and describe their development and in vivo function, followed by an account on the special developmental relationship between Th17 and Treg cells. We will describe the identification of Treg/Th17 intermediates and consider their lineage stability and function in vivo. Finally, we will discuss how Treg cells may regulate the Th17 cell response in the context of infection and inflammation, and elude on findings demonstrating that Treg cells can also have a prominent function in promoting the differentiation of Th17 cells.
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Affiliation(s)
- Matthias Lochner
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research: A Joint Venture Between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany
| | - Zuobai Wang
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research: A Joint Venture Between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany
| | - Tim Sparwasser
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research: A Joint Venture Between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany.
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26
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How Can We Manipulate the IL-23/IL-17 Axis? CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2015. [DOI: 10.1007/s40674-015-0017-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
The lymphocyte family has expanded significantly in recent years to include not only the adaptive lymphocytes (T cells, B cells) and NK cells, but also several additional innate lymphoid cell (ILC) types. ILCs lack clonally distributed antigen receptors characteristic of adaptive lymphocytes and instead respond exclusively to signaling via germline-encoded receptors. ILCs resemble T cells more closely than any other leukocyte lineage at the transcriptome level and express many elements of the core T cell transcriptional program, including Notch, Gata3, Tcf7, and Bcl11b. We present our current understanding of the shared and distinct transcriptional regulatory mechanisms involved in the development of adaptive T lymphocytes and closely related ILCs. We discuss the possibility that a core set of transcriptional regulators common to ILCs and T cells establish enhancers that enable implementation of closely aligned effector pathways. Studies of the transcriptional regulation of lymphopoiesis will support the development of novel therapeutic approaches to correct early lymphoid developmental defects and aberrant lymphocyte function.
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Affiliation(s)
- Maria Elena De Obaldia
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104
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28
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Iizuka M, Tsuboi H, Matsuo N, Asashima H, Hirota T, Kondo Y, Iwakura Y, Takahashi S, Matsumoto I, Sumida T. A crucial role of RORγt in the development of spontaneous Sialadenitis-like Sjögren's syndrome. THE JOURNAL OF IMMUNOLOGY 2014; 194:56-67. [PMID: 25411202 DOI: 10.4049/jimmunol.1401118] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The nuclear receptor retinoic acid-related orphan receptor (ROR)γt is required for the generation of Th17 cells, which are involved in various autoimmune diseases, including Sjögren's syndrome (SS). However, the pathological role of RORγt in SS remains to be elucidated. The present study was designed to clarify the role of RORγt in the pathogenesis of sialadenitis-like SS. Histological analysis of RORγt transgenic (Tg) mice was determined, and then Tg mice developed severe spontaneous sialadenitis-like SS. The analysis of infiltrating cells showed that most infiltrating cells were CD4(+) T cells. RORγt-overexpressing CD4(+) T cells induced sialadenitis as a result of transferred CD4(+) T cells from Tg mice into Rag2(-/-) mice. The examination of IL-17-deficient Tg mice indicated that IL-17 was not essential for the development of sialadenitis. The number of CD4(+)CD25(+)Foxp3(+) regulatory T (Treg) cells was significantly decreased in Tg mice, and CD25 expression and IL-2 stimulated STAT5 activation were inhibited in Treg cells. The inhibitory function of Treg cells of Tg mice was equal to that of wild-type mice in vitro. The abundant Treg cells of Tg mice could suppress the development of sialadenitis, but the reduced Treg cells of Tg mice could not inhibit the induction of sialadenitis in Rag2(-/-) mice transferred with effector cells from Tg mice. These results suggest that both RORγt-overexpressed CD4(+) T cells and reduced Treg cells might contribute to the development of SS-like sialadenitis.
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Affiliation(s)
- Mana Iizuka
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Hiroto Tsuboi
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Naomi Matsuo
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Hiromitsu Asashima
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Tomoya Hirota
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Yuya Kondo
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba 278-0022, Japan; and
| | - Satoru Takahashi
- Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Isao Matsumoto
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
| | - Takayuki Sumida
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan;
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29
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Yui MA, Rothenberg EV. Developmental gene networks: a triathlon on the course to T cell identity. Nat Rev Immunol 2014; 14:529-45. [PMID: 25060579 PMCID: PMC4153685 DOI: 10.1038/nri3702] [Citation(s) in RCA: 230] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cells acquire their ultimate identities by activating combinations of transcription factors that initiate and sustain expression of the appropriate cell type-specific genes. T cell development depends on the progression of progenitor cells through three major phases, each of which is associated with distinct transcription factor ensembles that control the recruitment of these cells to the thymus, their proliferation, lineage commitment and responsiveness to T cell receptor signals, all before the allocation of cells to particular effector programmes. All three phases are essential for proper T cell development, as are the mechanisms that determine the boundaries between each phase. Cells that fail to shut off one set of regulators before the next gene network phase is activated are predisposed to leukaemic transformation.
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Affiliation(s)
- Mary A Yui
- Division of Biology 156-29, California Institute of Technology, Pasadena, California 91125, USA
| | - Ellen V Rothenberg
- Division of Biology 156-29, California Institute of Technology, Pasadena, California 91125, USA
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30
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Li H, Hsu HC, Wu Q, Yang P, Li J, Luo B, Oukka M, Steele CH, Cua DJ, Grizzle WE, Mountz JD. IL-23 promotes TCR-mediated negative selection of thymocytes through the upregulation of IL-23 receptor and RORγt. Nat Commun 2014; 5:4259. [PMID: 25001511 PMCID: PMC4136447 DOI: 10.1038/ncomms5259] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 05/30/2014] [Indexed: 01/06/2023] Open
Abstract
Transient thymic involution is frequently found during inflammation, yet the mode of action of inflammatory cytokines is not well defined. Here we report that interleukin-23 (IL-23) production by the thymic dendritic cells (DCs) promotes apoptosis of the CD4hiCD8hi double positive (DP) thymocytes. A deficiency in IL-23 signaling interferes with negative selection in the male Db/H-Y T-cell receptor (TCR) transgenic mice. IL-23 plus TCR signaling results in significant up-regulation of IL-23 receptor (IL-23R) expressed predominantly on CD4hiCD8hiCD3+αβTCR+ DP thymocytes, and leads to RORγt dependent apoptosis. These results extend the action of IL-23 beyond its peripheral effects to a unique role in TCR mediated negative selection including elimination of natural T regulatory cells in the thymus.
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Affiliation(s)
- Hao Li
- 1] Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA [2] Department Microbiology, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Hui-Chen Hsu
- Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Qi Wu
- Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - PingAr Yang
- Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Jun Li
- Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Bao Luo
- Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Mohamed Oukka
- Department of Pediatrics, University of Washington, Seattle, Washington 98195, USA
| | - Claude H Steele
- Division of Pulmonary, Allergy & Critical Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - Daniel J Cua
- Merck Research Laboratories, Palo Alto, California 94304, USA
| | - William E Grizzle
- Clinical Pathology & Anatomic Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA
| | - John D Mountz
- 1] Division of Clinical Immunology & Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA [2] Birmingham VA Medical Center, Birmingham, Alabama 35233, USA
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31
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Digoxin Attenuates Acute Cardiac Allograft Rejection by Antagonizing RORγt Activity. Transplantation 2013; 95:434-41. [DOI: 10.1097/tp.0b013e31827a48f5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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32
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Abstract
The nuclear hormone receptor retinoid-related orphan receptor γt (RORγt) induces a pro-inflammatory program in lymphoid cells, culminating in the expression of interleukin-6 (IL-6), IL-17, IL-22, granulocyte-macrophage colony-stimulating factor, and tumor necrosis factor. During ontogeny, the first type of cells expressing RORγt are lymphoid tissue inducer cells, a type of innate lymphoid cell (ILC) generated in mammalian fetuses to induce the development of lymph nodes and Peyer's patches. After birth, RORγt(+) ILCs and RORγt(+) T cells are involved in the defense of epithelial surfaces against extracellular microbes and play an important role in the intestinal homeostasis with symbiotic microbiota. The development and evolution of RORγt(+) cells is intimately associated with the construction of a stable host-microbe interface.
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Affiliation(s)
- Gérard Eberl
- Lymphoid Tissue Development Unit, Institut Pasteur, Paris, France. CNRS, URA1961, Paris, France.
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33
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Spits H, Cupedo T. Innate lymphoid cells: emerging insights in development, lineage relationships, and function. Annu Rev Immunol 2012; 30:647-75. [PMID: 22224763 DOI: 10.1146/annurev-immunol-020711-075053] [Citation(s) in RCA: 522] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Innate lymphoid cells (ILCs) are immune cells that lack a specific antigen receptor yet can produce an array of effector cytokines that in variety match that of T helper cell subsets. ILCs function in lymphoid organogenesis, tissue remodeling, antimicrobial immunity, and inflammation, particularly at barrier surfaces. Their ability to promptly respond to insults inflicted by stress-causing microbes strongly suggests that ILCs are critical in first-line immunological defenses. Here, we review current data on developmental requirements, lineage relationships, and effector functions of two families of ILCs: (a) Rorγt-expressing cells involved in lymphoid tissue formation, mucosal immunity, and inflammation and (b) type 2 ILCs that are important for helminth immunity. We also discuss the potential roles of ILCs in the pathology of immune-mediated inflammatory and infectious diseases including allergy.
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Affiliation(s)
- Hergen Spits
- Tytgat Institute of Liver and Intestinal Research of the Academic Medical Center, Amsterdam 1105 AZ, The Netherlands.
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34
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[Expression of Foxp3 and RORgamma t in peripheral blood mononuclear cells in patients with laryngeal carcinoma as indicators of tumor stage--preliminary study]. Otolaryngol Pol 2011; 65:109-16. [PMID: 22000260 DOI: 10.1016/s0030-6657(11)70718-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Accepted: 08/16/2011] [Indexed: 11/22/2022]
Abstract
INTRODUCTION The degree of activation of cells involved in cellular immune response against tumor antigens (cytotoxic lymphocytes Tc) as well as efficiency of the mechanisms which promote immunosuppression (Treg - regulatory cells CD4(+)CD25(+)Foxp3(+)) may determine the course of the neoplastic disease. The aim of this study was to assess the function of autologous peripheral blood mononuclear cells (PBMCs) involved in the immunological processes on the basis of expression of Foxp3 and RORgamma t molecules as well as analysis of the relationships with clinical and morphological features of the tumor (pT and pN stage, G feature, degree of invasiveness according to the TFG classification) in laryngeal carcinoma. MATERIAL AND METHODS The analysis included a group of 59 patients with verified squamous cell carcinoma of the larynx. In the pathologic evaluation pTNM classification criteria, depth of invasion and degree of histological differentiation were used. Expression levels of mRNA for Foxp3 and RORgamma t in peripheral blood mononuclear cells by quantitative analysis of the amplified product in real time (real-time RT(2)-PCR) were evaluated. The level of Foxp3 and RORgamma t protein expression by Western blot analysis was determined. RESULTS In squamous cell carcinomas of the larynx, with the highest tumor aggressiveness the significantly highest level of mRNA and protein expression for Foxp3 molecule were observed. The severity of Foxp3 expression at both gene and protein level were positively linearly correlated with the degree of local extent of the tumor (pT3-4), depth of invasion (invasion of cartilage) and the degree of histological differentiation (low-differentiated tumors G3). In the study group of laryngeal cancers significantly lower level of RORgamma t expression in carcinomas with less invasive changes (pT1-2, high-differentiated tumors G1, carcinomas with microinvasion without evidence of invasion beyond the lamina propria) was also noted. CONCLUSIONS The study results indicate the important role of immune cell activity as indicators of advancement of clinical and morphological changes in squamous cell carcinoma of the larynx.
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Liptrott NJ, Owen A. The role of cytokines in the regulation of drug disposition: extended functional pleiotropism? Expert Opin Drug Metab Toxicol 2011; 7:341-52. [PMID: 21299442 DOI: 10.1517/17425255.2011.553600] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
INTRODUCTION Drug disposition, metabolism and drug-drug interactions are important considerations for most drugs. Cytokines are integral to the successful resolution of many diseases. Data are emerging on a role for cytokines in regulation of the expression and activity of drug transporters and drug metabolising enzymes. Investigation of the interaction between pharmacological and immunological responses is key to understanding the complex relationships involved in patient response to therapy. AREAS COVERED Evidence detailing the ability of cytokines to regulate drug disposition and metabolism is reviewed in the context of different cell and tissue types. The literature search undertaken provides an overview of the current understanding of the interrelationship between pharmacological and immunological factors which may influence successful drug therapy. EXPERT OPINION Dysregulation of cytokines and cytokine networks is a hallmark of a number of diseases such as HIV and cancer. The mechanisms by which the immune system can influence drug disposition are relatively understudied but recent work has highlighted the necessity for examining its impact on pharmacokinetics and pharmacodynamics. A more comprehensive approach in clinical studies will allow better determination of the impact of cytokines on drug disposition. In addition, determining the mechanisms that underpin the differential effects of cytokines across different cell types will clarify the responses reported in these studies.
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Affiliation(s)
- Neill James Liptrott
- NIHR Biomedical Research Centre for Microbial Disease, Royal Liverpool & Broadgreen University Hospitals Trust, Liverpool, UK
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Chung YC, Tsai YJ, Shiu TY, Sun YY, Wang PF, Chen CL. Screening large numbers of expression patterns of transcription factors in late stages of the mouse thymus. Gene Expr Patterns 2010; 11:84-92. [PMID: 20932939 DOI: 10.1016/j.gep.2010.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 09/23/2010] [Accepted: 09/27/2010] [Indexed: 12/27/2022]
Abstract
Transcription factor families are well known to be involved in the intrinsic pathways that regulate the organogenesis, early development, and microenvironment of the thymus. However, identification of the transcription factors (TFs) involved in the late development of the thymus, particularly later than embryonic day 15.5 (E15.5), is progressing slowly. In this study, we used in situ hybridization to screen numerous expression patterns of the TFs involved in the development of the mouse thymus. More than 400 members, including unique TFs and some transcription co-factors, were tested. Among the screened TFs, 160 were found to be expressed in the thymus after E15.5, and 74 of these were expressed in restricted areas.
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37
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Jetten AM. Retinoid-related orphan receptors (RORs): critical roles in development, immunity, circadian rhythm, and cellular metabolism. NUCLEAR RECEPTOR SIGNALING 2009; 7:e003. [PMID: 19381306 PMCID: PMC2670432 DOI: 10.1621/nrs.07003] [Citation(s) in RCA: 496] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Accepted: 03/18/2009] [Indexed: 12/11/2022]
Abstract
The last few years have witnessed a rapid increase in our knowledge of the retinoid-related orphan receptors RORα, -β, and -γ (NR1F1-3), their mechanism of action, physiological functions, and their potential role in several pathologies. The characterization of ROR-deficient mice and gene expression profiling in particular have provided great insights into the critical functions of RORs in the regulation of a variety of physiological processes. These studies revealed that RORα plays a critical role in the development of the cerebellum, that both RORα and RORβ are required for the maturation of photoreceptors in the retina, and that RORγ is essential for the development of several secondary lymphoid tissues, including lymph nodes. RORs have been further implicated in the regulation of various metabolic pathways, energy homeostasis, and thymopoiesis. Recent studies identified a critical role for RORγ in lineage specification of uncommitted CD4+ T helper cells into Th17 cells. In addition, RORs regulate the expression of several components of the circadian clock and may play a role in integrating the circadian clock and the rhythmic pattern of expression of downstream (metabolic) genes. Study of ROR target genes has provided insights into the mechanisms by which RORs control these processes. Moreover, several reports have presented evidence for a potential role of RORs in several pathologies, including osteoporosis, several autoimmune diseases, asthma, cancer, and obesity, and raised the possibility that RORs may serve as potential targets for chemotherapeutic intervention. This prospect was strengthened by recent evidence showing that RORs can function as ligand-dependent transcription factors.
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Affiliation(s)
- Anton M Jetten
- Cell Biology Section, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA.
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38
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Abstract
The study of interleukin-23 (IL-23) over the past 8 years has led to the realization that cellular immunity is far more complex than previously appreciated, because it is controlled by additional newly identified players. From the analysis of seemingly straightforward cytokine regulation of autoimmune diseases, many limitations of the established paradigms emerged that required reevaluation of the 'rules' that govern the initiation and maintenance of immune responses. This information led to a major revision of the T-helper 1 (Th1)/Th2 hypothesis and discovery of an unexpected link between transforming growth factor-beta-dependent Th17 and inducible regulatory T cells. The aim of this review is to explore the multiple characteristics of IL-23 with respect to its 'id' in autoimmunity, 'ego' in T-cell help, and 'superego' in defense against mucosal pathogens.
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Affiliation(s)
- Cristina M Tato
- Schering-Plough Biopharma, DNAX Discovery Research, Palo Alto, CA 94304, USA.
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Xu M, Sharma A, Hossain MZ, Wiest DL, Sen JM. Sustained expression of pre-TCR induced beta-catenin in post-beta-selection thymocytes blocks T cell development. THE JOURNAL OF IMMUNOLOGY 2009; 182:759-65. [PMID: 19124718 DOI: 10.4049/jimmunol.182.2.759] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Pre-TCR and IL-7R signals regulate beta-selection of thymocytes and then must be down-regulated for further development. However, the molecular events that control down-regulation remain unknown. We and others have previously shown that beta-catenin in cooperation with TCF regulates beta-selection. In this paper, we demonstrate that beta-catenin expression is stringently regulated by intrathymic signals, it is expressed at the highest levels in the pre-TCR signaled thymocytes, and is down-regulated in post-beta-selection thymocytes. Pre-TCR-induced beta-catenin regulates initial stages of pre-TCR signaling including expression of early growth response (Egr) genes but must be down-regulated to express RORgammat, which is essential for maturation to the CD4+CD8+ double positive (DP) stage. Sustained expression of beta-catenin results in the generation of IL-7R-, Egr-, and TGFbeta-expressing pre-DP thymocytes that are blocked in development. These data are consistent with a model in which post-beta-selection, pre-TCR-induced beta-catenin expression must return to background levels for efficient transition to the DP stage.
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Affiliation(s)
- Mai Xu
- Lymphocyte Development Unit, Laboratory of Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
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Taghon T, Rothenberg EV. Molecular mechanisms that control mouse and human TCR-alphabeta and TCR-gammadelta T cell development. Semin Immunopathol 2008; 30:383-98. [PMID: 18925397 DOI: 10.1007/s00281-008-0134-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Accepted: 09/30/2008] [Indexed: 12/22/2022]
Abstract
Following specification of hematopoietic precursor cells into the T cell lineage, several developmental options remain available to the immature thymocytes. The paradigm is that the outcome of the T cell receptor rearrangements and the corresponding T cell receptor signaling events will be predominant to determine the first of these choices: the alphabeta versus gammadelta T cell pathways. Here, we review the thymus-derived environmental signals, the transcriptional mediators, and other molecular mechanisms that are also involved in this decision in both the mouse and human. We discuss the differences in cellular events between the alphabeta and gammadelta developmental pathways and try to correlate these with a corresponding complexity of the molecular mechanisms that support them.
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Affiliation(s)
- Tom Taghon
- Department of Clinical Chemistry, Microbiology, and Immunology, Ghent University Hospital, Ghent University, De Pintelaan 185, 4 Blok A, 9000, Ghent, Belgium.
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41
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Yang Y, Wang HC, Sun XH. Id1 induces apoptosis through inhibition of RORgammat expression. BMC Immunol 2008; 9:20. [PMID: 18489764 PMCID: PMC2408562 DOI: 10.1186/1471-2172-9-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Accepted: 05/19/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Basic helix-loop-helix E proteins are transcription factors that play crucial roles in T cell development by controlling thymocyte proliferation, differentiation and survival. E protein functions can be repressed by their naturally occurring inhibitors, Id proteins (Id1-4). Transgenic expression of Id1 blocks T cell development and causes massive apoptosis of developing thymocytes. However, the underlying mechanisms are not entirely understood due to relatively little knowledge of the target genes regulated by E proteins. RESULTS We designed a unique strategy to search for genes directly controlled by E proteins and found RORgammat to be a top candidate. Using microarray analyses and reverse-transcriptase PCR assays, we showed that Id1 expression diminished RORgammat mRNA levels in T cell lines and primary thymocytes while induction of E protein activity restored RORgammat expression. E proteins were found to specifically bind to the promoter region of RORgammat, suggesting their role in activating transcription of the gene. Functional significance of E protein-controlled RORgammat expression was established based on the finding that RORgammat rescued apoptosis caused by Id1 overexpression. Furthermore, expression of RORgammat prevented Id1-induced p38 MAP kinase hyper-activation. CONCLUSION These results suggest that E protein-dependent RORgammat gene expression aids the survival of developing thymocytes, which provides a possible explanation for the massive apoptosis found in Id1 transgenic mice.
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Affiliation(s)
- Yuanzheng Yang
- Immunobiology and Cancer Program, Oklahoma Medical Research Foundation, 825 NE 13th St, Oklahoma City, OK 73104, USA.
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42
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David-Fung ES, Yui MA, Morales M, Wang H, Taghon T, Diamond RA, Rothenberg EV. Progression of regulatory gene expression states in fetal and adult pro-T-cell development. Immunol Rev 2006; 209:212-36. [PMID: 16448545 PMCID: PMC4157939 DOI: 10.1111/j.0105-2896.2006.00355.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Precursors entering the T-cell developmental pathway traverse a progression of states characterized by distinctive patterns of gene expression. Of particular interest are regulatory genes, which ultimately control the dwell time of cells in each state and establish the mechanisms that propel them forward to subsequent states. Under particular genetic and developmental circumstances, the transitions between these states occur with different timing, and environmental feedbacks may shift the steady-state accumulations of cells in each state. The fetal transit through pro-T-cell stages is faster than in the adult and subject to somewhat different genetic requirements. To explore causes of such variation, this review presents previously unpublished data on differentiation gene activation in pro-T cells of pre-T-cell receptor-deficient mutant mice and a quantitative comparison of the profiles of transcription factor gene expression in pro-T-cell subsets of fetal and adult wildtype mice. Against a background of consistent gene expression, several regulatory genes show marked differences between fetal and adult expression profiles, including those encoding two basic helix-loop-helix antagonist Id factors, the Ets family factor SpiB and the Notch target gene Deltex1. The results also reveal global differences in regulatory alterations triggered by the first T-cell receptor-dependent selection events in fetal and adult thymopoiesis.
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Xi H, Schwartz R, Engel I, Murre C, Kersh GJ. Interplay between RORgammat, Egr3, and E proteins controls proliferation in response to pre-TCR signals. Immunity 2006; 24:813-826. [PMID: 16782036 DOI: 10.1016/j.immuni.2006.03.023] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2005] [Revised: 12/20/2005] [Accepted: 03/21/2006] [Indexed: 10/24/2022]
Abstract
The response of thymocytes to pre-T cell receptor (pre-TCR) signaling includes proliferation and gene rearrangement, two cellular processes that are incompatible. The control of proliferation by pre-TCR signals depends on the activities of the transcription factors RORgammat, Egr3, E12, and E47. Here, we describe a regulatory network in which interplay between these factors ensures transient proliferation that is temporally distinct from gene rearrangement. RORgammat expression was elevated after pre-TCR signaling, and RORgammat promoted gene rearrangement in CD4+, CD8+ cells by inhibiting cell division, promoting survival via Bcl-X(L), and inducing Rag2. Egr3 was transiently induced by pre-TCR signals and promoted a distinct proliferative phase by reducing E protein-dependent RORgammat expression and interacting with RORgammat to prevent induction of target genes. After Egr3 subsided, the expression and function of RORgammat increased. Thus, transient induction of Egr3 delays the effects of RORgammat and enables pre-TCR signaling to induce both proliferation and gene rearrangement.
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MESH Headings
- Animals
- E-Box Elements
- Early Growth Response Protein 3/genetics
- Early Growth Response Protein 3/metabolism
- Gene Rearrangement, T-Lymphocyte
- Inhibitor of Differentiation Proteins/metabolism
- Lymphocyte Activation/genetics
- Mice
- Mice, Mutant Strains
- Nuclear Receptor Subfamily 1, Group F, Member 3
- Promoter Regions, Genetic
- RNA-Binding Proteins/genetics
- Rats
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Receptors, Retinoic Acid/genetics
- Receptors, Retinoic Acid/metabolism
- Receptors, Thyroid Hormone/genetics
- Receptors, Thyroid Hormone/metabolism
- Signal Transduction
- T-Lymphocytes/immunology
- TCF Transcription Factors/metabolism
- Transcription Factor 7-Like 1 Protein
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Affiliation(s)
- Hongkang Xi
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, 101 Woodruff Circle, Atlanta, Georgia 30322
| | - Ruth Schwartz
- Division of Biological Sciences, University of California, San Diego, La Jolla, California 92903
| | - Isaac Engel
- La Jolla Institute for Allergy and Immunology, San Diego, California 92121
| | - Cornelis Murre
- Division of Biological Sciences, University of California, San Diego, La Jolla, California 92903
| | - Gilbert J Kersh
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, 101 Woodruff Circle, Atlanta, Georgia 30322.
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44
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Jetten AM, Joo JH. Retinoid-related Orphan Receptors (RORs): Roles in Cellular Differentiation and Development. ADVANCES IN DEVELOPMENTAL BIOLOGY (AMSTERDAM, NETHERLANDS) 2006; 16:313-355. [PMID: 18418469 DOI: 10.1016/s1574-3349(06)16010-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Retinoid-related orphan receptors RORalpha, -beta, and -gamma are transcription factors belonging to the steroid hormone receptor superfamily. During embryonic development RORs are expressed in a spatial and temporal manner and are critical in the regulation of cellular differentiation and the development of several tissues. RORalpha plays a key role in the development of the cerebellum particularly in the regulation of the maturation and survival of Purkinje cells. In RORalpha-deficient mice, the reduced production of sonic hedgehog by these cells appears to be the major cause of the decreased proliferation of granule cell precursors and the observed cerebellar atrophy. RORalpha has been implicated in the regulation of a number of other physiological processes, including bone formation. RORbeta expression is largely restricted to several regions of the brain, the retina, and pineal gland. Mice deficient in RORbeta develop retinal degeneration that results in blindness. RORgamma is essential for lymph node organogenesis. In the intestine RORgamma is required for the formation of several other lymphoid tissues: Peyer's patches, cryptopatches, and isolated lymphoid follicles. RORgamma plays a key role in the generation of lymphoid tissue inducer (LTi) cells that are essential for the development of these lymphoid tissues. In addition, RORgamma is a critical regulator of thymopoiesis. It controls the differentiation of immature single-positive thymocytes into double-positive thymocytes and promotes the survival of double-positive thymocytes by inducing the expression of the anti-apoptotic gene Bcl-X(L). Interestingly, all three ROR receptors appear to play a role in the control of circadian rhythms. RORalpha positively regulates the expression of Bmal1, a transcription factor that is critical in the control of the circadian clock. This review intends to provide an overview of the current status of the functions RORs have in these biological processes.
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Affiliation(s)
- Anton M Jetten
- Cell Biology Section, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
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45
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Abstract
The thymus is the nursery where T cell precursors mature into T cells of the and lineages. In a Perspective, Rothenberg discusses intriguing findings that reveal a new level of regulation in the thymus (Silva-Santos et al.). Apparently, double-positive T cells that are destined to mature into T cells directly regulate the development of the T-cell lineage through the production of lymphotoxin and the action of a transcription factor called RORt.
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46
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Puthier D, Joly F, Irla M, Saade M, Victorero G, Loriod B, Nguyen C. A General Survey of Thymocyte Differentiation by Transcriptional Analysis of Knockout Mouse Models. THE JOURNAL OF IMMUNOLOGY 2004; 173:6109-18. [PMID: 15528347 DOI: 10.4049/jimmunol.173.10.6109] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The thymus is the primary site of T cell lymphopoiesis. To undergo proper differentiation, developing T cells follow a well-ordered genetic program that strictly depends on the heterogeneous and highly specialized thymic microenvironment. In this study, we used microarray technology to extensively describe transcriptional events regulating alphabeta T cell fate. To get an integrated view of these processes, both whole thymi from genetically engineered mice together with purified thymocytes were analyzed. Using mice exhibiting various transcriptional perturbations and developmental blockades, we performed a transcriptional microdissection of the organ. Multiple signatures covering both cortical and medullary stroma as well as various thymocyte maturation intermediates were clearly defined. Beyond the definition of histological and functional signatures (proliferation, rearrangement), we provide the first evidence that such an approach may also highlight the complex cross-talk events that occur between maturing T cells and stroma. Our data constitute a useful integrated resource describing the main gene networks set up during thymocyte development and a first step toward a more systematic transcriptional analysis of genetically modified mice.
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MESH Headings
- Animals
- Cell Differentiation/genetics
- Cell Differentiation/immunology
- Cell Line
- Cell Line, Transformed
- Cell Proliferation
- DNA Helicases
- Gene Expression Profiling/methods
- Gene Rearrangement, T-Lymphocyte
- Genes, T-Cell Receptor alpha/genetics
- Leukemia P388
- Mice
- Mice, Inbred C57BL
- Mice, Knockout/genetics
- Mice, Knockout/immunology
- Models, Animal
- Multigene Family/immunology
- Nuclear Proteins/biosynthesis
- Nuclear Proteins/genetics
- Oligonucleotide Array Sequence Analysis/methods
- Proto-Oncogene Proteins/deficiency
- Proto-Oncogene Proteins/genetics
- Receptor, Notch1
- Receptors, Cell Surface/biosynthesis
- Receptors, Cell Surface/genetics
- Receptors, Interleukin-2/biosynthesis
- Stromal Cells/immunology
- Stromal Cells/metabolism
- T-Lymphocyte Subsets/cytology
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- Thymus Gland/cytology
- Thymus Gland/immunology
- Thymus Gland/metabolism
- Transcription Factor RelB
- Transcription Factors/biosynthesis
- Transcription Factors/deficiency
- Transcription Factors/genetics
- Transcription Factors/physiology
- Up-Regulation/genetics
- Up-Regulation/immunology
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Affiliation(s)
- Denis Puthier
- Technologies Avancées pour le Génome et la Clinique/ERM 206, Parc Scientifique de Luminy, 13288 Marseille cedex 09, France
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47
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Harant H, Lindley IJD. Negative cross-talk between the human orphan nuclear receptor Nur77/NAK-1/TR3 and nuclear factor-kappaB. Nucleic Acids Res 2004; 32:5280-90. [PMID: 15466594 PMCID: PMC521667 DOI: 10.1093/nar/gkh856] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The effect of orphan nuclear receptor Nur77 overexpression on activation of an interleukin-2 (IL-2) promoter-luciferase construct was analyzed in the human leukemic cell line Jurkat. Cotransfection of the IL-2 promoter construct together with the Nur77 expression plasmid resulted in a significant repression of IL-2 promoter activation compared to control cells. The repression by Nur77 requires the N-terminal activation function-1 domain. The repressive effect of Nur77 on IL-2 promoter activation is mediated through inhibition of the transcription factor complex nuclear factor-kappaB (NF-kappaB), since blocking or alteration of the IL-2 NF-kappaB binding sites resulted in abrogation of the repressive effect of Nur77. Moreover, further examination of a reporter gene construct containing multiple copies of the IL-2 CD28 response element (CD28RE) showed that Nur77 can inhibit transactivation mediated by the NF-kappaB components p65 and c-Rel. However, no effect of Nur77 was seen on p65-mediated transactivation of a construct containing multiple NF-kappaB binding sites of the HIV LTR. Our data suggest that Nur77 is able to block activation through NF-kappaB when bound to low-affinity NF-kappaB binding sites, such as those located in the IL-2 promoter.
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Affiliation(s)
- Hanna Harant
- Novartis Institute for BioMedical Research, A-1235 Vienna, Austria.
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48
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Yu Q, Erman B, Park JH, Feigenbaum L, Singer A. IL-7 receptor signals inhibit expression of transcription factors TCF-1, LEF-1, and RORgammat: impact on thymocyte development. ACTA ACUST UNITED AC 2004; 200:797-803. [PMID: 15365098 PMCID: PMC2211960 DOI: 10.1084/jem.20032183] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Intrathymic T cell development depends on signals transduced by both T cell receptor and cytokine receptors. Early CD4−CD8− (double negative) thymocytes require interleukin (IL)-7 receptor (IL-7R) signals for survival and proliferation, but IL-7R signals are normally extinguished by the immature single positive (ISP) stage of thymocyte development. We now demonstrate that IL-7R signals inhibit expression of transcription factors TCF-1, LEF-1, and RORγt that are required for the ISP to double positive (DP) transition in the thymus. In addition, we demonstrate that IL-7R signals also inhibit TCF-1 and LEF-1 expression in mature peripheral T cells. Thus, the present work has identified several important downstream target genes of IL-7R signaling in T cells and thymocytes that provide a molecular mechanism for the inhibitory influence of IL-7R signaling on DP thymocyte development. We conclude that IL-7R signals down-regulate transcription factors required for the ISP to DP transition and so must be terminated by the ISP stage of thymocyte development.
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Affiliation(s)
- Qing Yu
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bldg. 10, Rm. 4B36, Bethesda, MD 20892, USA
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49
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Broussard DR, Lozano MM, Dudley JP. Rorgamma (Rorc) is a common integration site in type B leukemogenic virus-induced T-cell lymphomas. J Virol 2004; 78:4943-6. [PMID: 15078980 PMCID: PMC387709 DOI: 10.1128/jvi.78.9.4943-4946.2004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The retrovirus type B leukemogenic virus (TBLV) causes T-cell lymphomas in mice. We have identified the Rorgamma locus as an integration site in 19% of TBLV-induced tumors. Overexpression of one or more Rorgamma isoforms in >77% of the tumors tested may complement apoptotic effects of c-myc overexpression.
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Affiliation(s)
- Dana R Broussard
- Section of Microbiology and Molecular Genetics and Institute of Cellular and Molecular Biology, Austin, Texas 78712, USA
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50
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Zhang N, Guo J, He YW. Lymphocyte accumulation in the spleen of retinoic acid receptor-related orphan receptor gamma-deficient mice. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2003; 171:1667-75. [PMID: 12902464 DOI: 10.4049/jimmunol.171.4.1667] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The hormone nuclear receptor retinoic acid receptor-related orphan receptor gamma (RORgamma) plays important roles in thymocyte development and lymphoid organogenesis. RORgamma and its thymus-specific isoform RORgammat are expressed in the thymus, but not in the spleen and bone marrow (BM). However, RORgamma(-/-) mice have 2- to 3-fold more splenocytes than wild-type controls due to an accumulation of conventional resting B lymphocytes. The increase in B lymphocytes in RORgamma(-/-) mice is caused neither by abnormal B cell development in the BM nor by an obvious defect in the peripheral T cell compartment. Furthermore, analyses of BM chimeras using either RORgamma(-/-) or recombinase-activating gene-2(-/-) mice as recipients and wild-type or RORgamma(-/-) mice as donors, respectively, demonstrate that the splenic microenvironment of RORgamma(-/-) mice is defective, since wild-type T and B lymphocytes accumulated in these chimeric mice. In addition, T lymphocyte homeostasis was altered due to a lowered thymic output in RORgamma(-/-) mice. Collectively, these results suggest that RORgamma regulates lymphocyte homeostasis at multiple levels.
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Affiliation(s)
- Nu Zhang
- Department of Immunology, Duke University Medical Center, Durham, NC 27710, USA
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