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Sharma P, Sethi RS. In Vivo Exposure of Deltamethrin Dysregulates the NFAT Signalling Pathway and Induces Lung Damage. J Toxicol 2024; 2024:5261994. [PMID: 39239465 PMCID: PMC11377118 DOI: 10.1155/2024/5261994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 07/23/2024] [Accepted: 08/10/2024] [Indexed: 09/07/2024] Open
Abstract
Deltamethrin is an insecticide used to control harmful agricultural insects that otherwise damage crops and to control vector-borne diseases. Long-term exposure to deltamethrin results in the inflammation of the lungs. The present study elucidates the molecular mechanism underlying the deltamethrin-induced lung damage. The lung samples were extracted from the Swiss albino mice following the treatment of low (2.5 mg/kg) and high (5 mg/kg) doses of deltamethrin. The mRNA expression of TCR, IL-4, and IL-13 showed upregulation, while the expression of NFAT and FOS was downregulated following a low dose of deltamethrin. Moreover, the expression of TCR was downregulated with the exposure of a high dose of deltamethrin. Furthermore, the immunohistochemistry data confirmed the pattern of protein expression for TCR, FOS, IL-4, and IL-13 following a low dose of deltamethrin exposure. However, no change was seen in the TCR, NFAT, FOS, JUN, IL-4, and IL-13 immunopositive cells of the high-dose treatment group. Also, ELISA results showed increased expression of IL-13 in the BAL fluid of animals exposed to low doses of deltamethrin. Overall, the present study showed that deltamethrin exposure induces lung damage and immune dysregulation via dysregulating the NFAT signalling pathway.
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Affiliation(s)
- Prakriti Sharma
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - R S Sethi
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
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2
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Prencipe G, Cerveró-Varona A, Perugini M, Sulcanese L, Iannetta A, Haidar-Montes AA, Stöckl J, Canciello A, Berardinelli P, Russo V, Barboni B. Amphiregulin orchestrates the paracrine immune-suppressive function of amniotic-derived cells through its interplay with COX-2/PGE 2/EP4 axis. iScience 2024; 27:110508. [PMID: 39156643 PMCID: PMC11326934 DOI: 10.1016/j.isci.2024.110508] [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: 03/06/2024] [Revised: 06/10/2024] [Accepted: 07/11/2024] [Indexed: 08/20/2024] Open
Abstract
The paracrine crosstalk between amniotic-derived membranes (AMs)/epithelial cells (AECs) and immune cells is pivotal in tissue healing following inflammation. Despite evidence collected to date, gaps in understanding the underlying molecular mechanisms have hindered clinical applications. The present study represents a significant step forward demonstrating that amphiregulin (AREG) orchestrates the native immunomodulatory functions of amniotic derivatives via the COX-2/PGE2/EP4 axis. The results highlight the immunosuppressive efficacy of PGE2-dependent AREG release, dampening PBMCs' activation, and NFAT pathway in Jurkat reporter cells via TGF-β signaling. Moreover, AREG emerges as a key protein mediator by attenuating acute inflammatory response in Tg(lysC:DsRed2) zebrafish larvae. Notably, the interplay of diverse COX-2/PGE2 pathway activators enables AM/AEC to adapt rapidly to external stimuli (LPS and/or stretching) through a responsive positive feedback loop on the AREG/EGFR axis. These findings offer valuable insights for developing innovative cell-free therapies leveraging the potential of amniotic derivatives in immune-mediated diseases and regenerative medicine.
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Affiliation(s)
- Giuseppe Prencipe
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Adrián Cerveró-Varona
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Monia Perugini
- Department of Bioscience and Agro-Food and Environmental Technology, University of Teramo, Teramo, Italy
| | - Ludovica Sulcanese
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Annamaria Iannetta
- Department of Bioscience and Agro-Food and Environmental Technology, University of Teramo, Teramo, Italy
| | - Arlette Alina Haidar-Montes
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Johannes Stöckl
- Centre for Pathophysiology, Infectiology and Immunology, Institute of Immunology, Medical University of Vienna, Vienna 1090, Austria
| | - Angelo Canciello
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Paolo Berardinelli
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Valentina Russo
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
| | - Barbara Barboni
- Unit of Basic and Applied Sciences, Department of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
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3
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Kostel Bal S, Giuliani S, Block J, Repiscak P, Hafemeister C, Shahin T, Kasap N, Ransmayr B, Miao Y, van de Wetering C, Frohne A, Jimenez Heredia R, Schuster M, Zoghi S, Hertlein V, Thian M, Bykov A, Babayeva R, Bilgic Eltan S, Karakoc-Aydiner E, Shaw LE, Chowdhury I, Varjosalo M, Argüello RJ, Farlik M, Ozen A, Serfling E, Dupré L, Bock C, Halbritter F, Hannich JT, Castanon I, Kraakman MJ, Baris S, Boztug K. Biallelic NFATC1 mutations cause an inborn error of immunity with impaired CD8+ T-cell function and perturbed glycolysis. Blood 2023; 142:827-845. [PMID: 37249233 DOI: 10.1182/blood.2022018303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 04/27/2023] [Accepted: 05/17/2023] [Indexed: 05/31/2023] Open
Abstract
The nuclear factor of activated T cells (NFAT) family of transcription factors plays central roles in adaptive immunity in murine models; however, their contribution to human immune homeostasis remains poorly defined. In a multigenerational pedigree, we identified 3 patients who carry germ line biallelic missense variants in NFATC1, presenting with recurrent infections, hypogammaglobulinemia, and decreased antibody responses. The compound heterozygous NFATC1 variants identified in these patients caused decreased stability and reduced the binding of DNA and interacting proteins. We observed defects in early activation and proliferation of T and B cells from these patients, amenable to rescue upon genetic reconstitution. Stimulation induced early T-cell activation and proliferation responses were delayed but not lost, reaching that of healthy controls at day 7, indicative of an adaptive capacity of the cells. Assessment of the metabolic capacity of patient T cells revealed that NFATc1 dysfunction rendered T cells unable to engage in glycolysis after stimulation, although oxidative metabolic processes were intact. We hypothesized that NFATc1-mutant T cells could compensate for the energy deficit due to defective glycolysis by using enhanced lipid metabolism as an adaptation, leading to a delayed, but not lost, activation responses. Indeed, we observed increased 13C-labeled palmitate incorporation into citrate, indicating higher fatty acid oxidation, and we demonstrated that metformin and rosiglitazone improved patient T-cell effector functions. Collectively, enabled by our molecular dissection of the consequences of loss-of-function NFATC1 mutations and extending the role of NFATc1 in human immunity beyond receptor signaling, we provide evidence of metabolic plasticity in the context of impaired glycolysis observed in patient T cells, alleviating delayed effector responses.
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Affiliation(s)
- Sevgi Kostel Bal
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Sarah Giuliani
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Jana Block
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Peter Repiscak
- St. Anna Children's Cancer Research Institute, Vienna, Austria
| | | | - Tala Shahin
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Nurhan Kasap
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Bernhard Ransmayr
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Yirun Miao
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Cheryl van de Wetering
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Alexandra Frohne
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Raul Jimenez Heredia
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Michael Schuster
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Samaneh Zoghi
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Vanessa Hertlein
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Marini Thian
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Aleksandr Bykov
- St. Anna Children's Cancer Research Institute, Vienna, Austria
| | - Royala Babayeva
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Sevgi Bilgic Eltan
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Elif Karakoc-Aydiner
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Lisa E Shaw
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | | | - Markku Varjosalo
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Rafael J Argüello
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Matthias Farlik
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Ahmet Ozen
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Edgar Serfling
- Department of Molecular Pathology, Institute of Pathology, and Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
| | - Loïc Dupré
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
- Toulouse Institute for Infectious and Inflammatory Diseases, INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Christoph Bock
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Medical University of Vienna, Institute of Artificial Intelligence, Center for Medical Data Science, Vienna, Austria
| | | | - J Thomas Hannich
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Irinka Castanon
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Michael J Kraakman
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Safa Baris
- Department of Pediatrics, Division of Allergy and Immunology, Marmara University School of Medicine, Istanbul, Turkey
- The Isil Berat Barlan Center for Translational Medicine, Marmara University, Istanbul, Turkey
| | - Kaan Boztug
- St. Anna Children's Cancer Research Institute, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- St. Anna Children's Hospital, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
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The BET Protein Inhibitor JQ1 Decreases Hypoxia and Improves the Therapeutic Benefit of Anti-PD-1 in a High-Risk Neuroblastoma Mouse Model. Cells 2022; 11:cells11182783. [PMID: 36139358 PMCID: PMC9497090 DOI: 10.3390/cells11182783] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Anti-programmed death 1 (PD-1) is a revolutionary treatment for many cancers. The response to anti-PD-1 relies on several properties of tumor and immune cells, including the expression of PD-L1 and PD-1. Despite the impressive clinical benefit achieved with anti-PD-1 in several cancers in adults, the use of this therapy for high-risk neuroblastoma remains modest. Here, we evaluated the therapeutic benefit of anti-PD-1 in combination with JQ1 in a highly relevant TH-MYCN neuroblastoma transgenic mouse model. JQ1 is a small molecule inhibitor of the extra-terminal domain (BET) family of bromodomain proteins, competitively binding to bromodomains. Using several neuroblastoma cell lines in vitro, we showed that JQ1 inhibited hypoxia-dependent induction of HIF-1α and decreased the expression of the well-known HIF-1α downstream target gene CA9. Using MRI relaxometry performed on TH-MYCN tumor-bearing mice, we showed that JQ1 decreases R2* in tumors, a parameter associated with intra-tumor hypoxia in pre-clinical settings. Decreasing hypoxia by JQ1 was associated with improved blood vessel quality and integrity, as revealed by CD31 and αSMA staining on tumor sections. By analyzing the immune landscape of TH-MYCN tumors in mice, we found that JQ1 had no major impact on infiltrating immune cells into the tumor microenvironment but significantly increased the percentage of CD8+ PD-1+, conventional CD4+ PD-1+, and Treg PD-1+ cells. While anti-PD-1 monotherapy did not affect TH-MYCN tumor growth, we showed that combinatorial therapy associating JQ1 significantly decreased the tumor volume and improved the therapeutic benefit of anti-PD-1. This study provided the pre-clinical proof of concept needed to establish a new combination immunotherapy approach that may create tremendous enthusiasm for treating high-risk childhood neuroblastoma.
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Park J, Kang GH, Kim Y, Lee JY, Song JA, Hwang JH. Formaldehyde exposure induces differentiation of regulatory T cells via the NFAT-mediated T cell receptor signalling pathway in Yucatan minipigs. Sci Rep 2022; 12:8149. [PMID: 35581361 PMCID: PMC9114421 DOI: 10.1038/s41598-022-12183-8] [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: 08/24/2021] [Accepted: 05/05/2022] [Indexed: 12/31/2022] Open
Abstract
The use of minipigs (Sus scrofa) as a platform for toxicological and pharmacological research is well established. In the present study, we investigated the effect of formaldehyde (FA) exposure on helper T cell-mediated splenic immune responses in Yucatan minipigs. The minipigs were exposed to different inhaled concentrations of FA (0, 2.16, 4.62, or 10.48 mg/m3) for a period of 2 weeks. Immune responses elicited by exposure to FA were determined by assessing physiological parameters, mRNA expression, and cytokine production. Additionally, the distribution of helper T cells and regulatory T (Treg) cells and expression of NFAT families, which are well-known T cell receptor signalling proteins associated with regulatory T cell development, were evaluated. Exposure to FA suppressed the expression of genes associated with Th1 and Th2 cells in minipigs in a concentration-dependent manner. The subsequent production of cytokines also declined post-FA exposure. Furthermore, exposure to FA induced the differentiation of CD4+ Foxp3+ Treg cells with divergent expression levels of NFAT1 and NFAT2. These results indicated that exposure to FA increased the Treg cell population via the NFAT-mediated T cell receptor signalling pathway, leading to suppression of effector T cell activity with a decline in T cell-related cytokine production.
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Affiliation(s)
- Jeongsik Park
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
| | - Goo-Hwa Kang
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
| | - Youngkyu Kim
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea.,Department of Stem Cell and Regenerative Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul-si, 27447, Republic of Korea
| | - Ju Young Lee
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea.,Department of Human and Environmental Toxicology, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Jeong Ah Song
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
| | - Jeong Ho Hwang
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea.
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6
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Sana I, Mantione ME, Angelillo P, Muzio M. Role of NFAT in Chronic Lymphocytic Leukemia and Other B-Cell Malignancies. Front Oncol 2021; 11:651057. [PMID: 33869054 PMCID: PMC8047411 DOI: 10.3389/fonc.2021.651057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/15/2021] [Indexed: 12/20/2022] Open
Abstract
In recent years significant progress has been made in the clinical management of chronic lymphocytic leukemia (CLL) as well as other B-cell malignancies; targeting proximal B-cell receptor signaling molecules such as Bruton Tyrosine Kinase (BTK) and Phosphoinositide 3-kinase (PI3Kδ) has emerged as a successful treatment strategy. Unfortunately, a proportion of patients are still not cured with available therapeutic options, thus efforts devoted to studying and identifying new potential druggable targets are warranted. B-cell receptor stimulation triggers a complex cascade of signaling events that eventually drives the activation of downstream transcription factors including Nuclear Factor of Activated T cells (NFAT). In this review, we summarize the literature on the expression and function of NFAT family members in CLL where NFAT is not only overexpressed but also constitutively activated; NFAT controls B-cell anergy and targeting this molecule using specific inhibitors impacts on CLL cell viability. Next, we extend our analysis on other mature B-cell lymphomas where a distinct pattern of expression and activation of NFAT is reported. We discuss the therapeutic potential of strategies aimed at targeting NFAT in B-cell malignancies not overlooking the fact that NFAT may play additional roles regulating the inflammatory microenvironment.
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Affiliation(s)
- Ilenia Sana
- Division of Experimental Oncology, San Raffaele Hospital IRCCS, Milano, Italy
| | | | - Piera Angelillo
- Division of Experimental Oncology, San Raffaele Hospital IRCCS, Milano, Italy.,Lymphoma Unit, Department of Onco-Hematology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marta Muzio
- Division of Experimental Oncology, San Raffaele Hospital IRCCS, Milano, Italy
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Kitamura N, Kaminuma O. Isoform-Selective NFAT Inhibitor: Potential Usefulness and Development. Int J Mol Sci 2021; 22:2725. [PMID: 33800389 PMCID: PMC7962815 DOI: 10.3390/ijms22052725] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/30/2022] Open
Abstract
Nuclear factor of activated T cells (NFAT), which is the pharmacological target of immunosuppressants cyclosporine and tacrolimus, has been shown to play an important role not only in T cells (immune system), from which their name is derived, but also in many biological events. Therefore, functional and/or structural abnormalities of NFAT are linked to the pathogenesis of diseases in various organs. The NFAT protein family consists of five isoforms, and each isoform performs diverse functions and has unique expression patterns in the target tissues. This diversity has made it difficult to obtain ideal pharmacological output for immunosuppressants that inhibit the activity of almost all NFAT family members, causing serious and wide-ranging side effects. Moreover, it remains unclear whether isoform-selective NFAT regulation can be achieved by targeting the structural differences among NFAT isoforms and whether this strategy can lead to the development of better drugs than the existing ones. This review summarizes the role of the NFAT family members in biological events, including the development of various diseases, as well as the usefulness of and problems associated with NFAT-targeting therapies, including those dependent on current immunosuppressants. Finally, we propose a novel therapeutic strategy based on the molecular mechanisms that enable selective regulation of specific NFAT isoforms.
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Affiliation(s)
- Noriko Kitamura
- Laboratory of Allergy and Immunology, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
| | - Osamu Kaminuma
- Laboratory of Allergy and Immunology, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
- Department of Disease Model, Research Institute of Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
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8
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Jakobi M, Kiefer A, Mirzakhani H, Rauh M, Zimmermann T, Xepapadaki P, Stanic B, Akdis M, Papadopoulos NG, Raby BA, Weiss ST, Finotto S. Role of nuclear factor of activated T cells 2 (NFATc2) in allergic asthma. Immun Inflamm Dis 2020; 8:704-712. [PMID: 33079489 PMCID: PMC7654396 DOI: 10.1002/iid3.360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND We recently described increased NFATc1, IRF4, and NIP45 messenger RNA (mRNA) expression in peripheral blood mononuclear cells (PBMCs) of asthmatic children and adults with multiple allergies. OBJECTIVE NFATc2 has been described to associate with IRF4 to induce interleukin-4, and to be inhibited by T-bet. Here, we analyzed the role of NFATc2 in asthmatic children and adults. METHODS PBMCs were isolated from the blood of control of asthmatics subjects. Some PBMCs were analyzed untreated and some cultured with and without phytohemagglutinin. Then, RNA was extracted from the cells and cytokines were measured in the supernatants via enzyme-linked immunosorbent assay or multiplex analysis. RNA was then reverse-transcribed and NFATc1, NFATC2, IRF4, and T-bet mRNA were analyzed by real-time polymerase chain reaction. In addition, in peripheral blood cells, NFATc2 expression was analyzed, in a population of asthmatic children and adults from the Asthma BRIDGE study. RESULTS In addition to NFATc1 and NIP45, also NFATc2 was found upregulated in PBMCs and peripheral blood cells from asthmatic children and adults with allergic asthma. Moreover, NFATc1 directly correlated with lymphocytes number whereas NFATc2 correlated with peripheral eosinophilia in asthma. CONCLUSIONS In addition to NFATc1 and NIP45, NFATc2 was found upregulated in asthma. Moreover, NFATc1 mRNA correlated with lymphocytes both in control and asthma, and NFATC1 and NFATc2 mRNA showed a direct correlation with eosinophils in controls but not in asthma, indicating that NFATc1 is associated with lymphocytes and not eosinophils in asthma. CLINICAL SIGNIFICANCE Targeting NFATc2 in T lymphocytes might ameliorate the allergic phenotype in asthmatic subjects.
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Affiliation(s)
- Marielena Jakobi
- Department of Molecular Pneumology, Universitätsklinikum ErlangenFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
| | - Alexander Kiefer
- Department of Allergy and Pneumology, Children's Hospital, Universitätsklinikum ErlangenFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergErlangenGermany
| | - Hooman Mirzakhani
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Manfred Rauh
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Theodor Zimmermann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Paraskevi Xepapadaki
- Department of Allergy, 2nd Pediatric ClinicNational and Kapodistrian University of AthensAthensGreece
| | - Barbara Stanic
- Swiss Institute of Allergy and Asthma Research (SIAF)University of ZurichDavos WolfgangSwitzerland
| | - Mubeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF)University of ZurichDavos WolfgangSwitzerland
| | - Nikolaos G. Papadopoulos
- Department of Allergy, 2nd Pediatric ClinicNational and Kapodistrian University of AthensAthensGreece
- Centre for Respiratory Medicine and AllergyUniversity of ManchesterUK
| | - Benjamin A. Raby
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Scott T. Weiss
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Susetta Finotto
- Department of Molecular Pneumology, Universitätsklinikum ErlangenFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
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9
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Park J, Yang HS, Song MK, Kim DI, Lee K. Formaldehyde exposure induces regulatory T cell-mediated immunosuppression via calcineurin-NFAT signalling pathway. Sci Rep 2020; 10:17023. [PMID: 33046725 PMCID: PMC7550593 DOI: 10.1038/s41598-020-72502-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 04/15/2020] [Indexed: 11/08/2022] Open
Abstract
In this study, we investigated the effects of Formaldehyde (FA) exposure on splenic immune responses wherein helper T cells become activated and differentiate into effector T and regulatory T cells. BALB/c mice were exposed to two FA concentrations (1.38 mg/m3 and 5.36 mg/m3) for 4 h/day and 5 days/week for 2 weeks. FA-induced immune responses were examined by the production of cytokines, expression of mRNAs, and distributions of helper T cells and regulatory T cells. Moreover, expression of calcineurin and NFATs, regulatory T cell-related signalling proteins, were evaluated. FA exposure suppressed Th2-, Th1-, and Th17-related splenic cytokines in a dose-dependent manner. mRNA expression of splenic cytokines was also decreased by FA exposure, which correlated with decreased cytokine expression. In parallel, FA exposure promoted T cell differentiation into regulatory T cells in a dose-dependent manner supported by the expression of calcineurin and NFAT1. Taken together, our results indicated that FA exposure increases the number of regulatory T cells via calcineurin-NFAT signalling, thereby leading to effector T cell activity suppression with decreased T cell-related cytokine secretion and mRNA expression. These findings provide insight into the mechanisms underlying the adverse effects of FA and accordingly have general implications for human health, particularly in occupational settings.
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Affiliation(s)
- Jeongsik Park
- Jeonbuk Department of inhalation Research, National Center for Efficacy Evaluation of Respiratory Disease Products, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Hyo-Seon Yang
- Jeonbuk Department of inhalation Research, National Center for Efficacy Evaluation of Respiratory Disease Products, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
| | - Mi-Kyung Song
- Jeonbuk Department of inhalation Research, National Center for Efficacy Evaluation of Respiratory Disease Products, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Dong Im Kim
- Jeonbuk Department of inhalation Research, National Center for Efficacy Evaluation of Respiratory Disease Products, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea
| | - Kyuhong Lee
- Jeonbuk Department of inhalation Research, National Center for Efficacy Evaluation of Respiratory Disease Products, Korea Institute of Toxicology, 30 Baehak 1-gil, Jeonguep, Jeollabuk-do, 56212, Republic of Korea.
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon, 34113, Republic of Korea.
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10
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Genetic inhibition of NFATC2 attenuates asparaginase hypersensitivity in mice. Blood Adv 2020; 4:4406-4416. [PMID: 32931581 DOI: 10.1182/bloodadvances.2020002478] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/12/2020] [Indexed: 12/22/2022] Open
Abstract
The family of nuclear factor of activated T cells (NFAT) transcription factors plays a critical role in mediating immune responses. Our previous clinical pharmacogenetic studies suggested that NFATC2 is associated with the risk of hypersensitivity reactions to the chemotherapeutic agent L-asparaginase (ASNase) that worsen outcomes during the treatment of pediatric acute lymphoblastic leukemia. We therefore hypothesized that the genetic inhibition of NFATC2 would protect against the development of anti-ASNase antibodies and ASNase hypersensitivity. Our study demonstrates that ASNase-immunized NFATC2-deficient mice are protected against ASNase hypersensitivity and develop lower antigen-specific and total immunoglobulin E (IgE) levels compared with wild-type (WT) controls. Furthermore, ASNase-immunized NFATC2-deficient mice develop more CD4+ regulatory T cells, fewer CD4+ interleukin-4-positive (IL-4+) cells, higher IL-10/TGF-β1 levels, and lower IL-4/IL-13 levels relative to WT mice. Basophils and peritoneal mast cells from ASNase-immunized, but not naïve, NFATC2-deficient mice had lower FcεRI expression and decreased IgE-mediated mast cell activation than WT mice. Furthermore, ASNase-immunized, but not naïve, NFATC2-deficient mice developed less severe shock than WT mice after induction of passive anaphylaxis or direct histamine administration. Thus, inhibition of NFATC2 protects against ASNase hypersensitivity by impairing T helper 2 responses, which may provide a novel strategy for attenuating hypersensitivity and the development of antidrug antibodies, including to ASNase.
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11
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Bendickova K, Fric J. Roles of IL-2 in bridging adaptive and innate immunity, and as a tool for cellular immunotherapy. J Leukoc Biol 2020; 108:427-437. [PMID: 32480431 PMCID: PMC7384134 DOI: 10.1002/jlb.5mir0420-055r] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/01/2020] [Accepted: 05/04/2020] [Indexed: 12/13/2022] Open
Abstract
IL-2 was initially characterized as a T cell growth factor in the 1970s, and has been studied intensively ever since. Decades of research have revealed multiple and diverse roles for this potent cytokine, indicating a unique linking role between adaptive and innate arms of the immune system. Here, we review the literature showing that IL-2 is expressed in a plethora of cell types across the immune system, where it has indispensable functions in orchestrating cellular interactions and shaping the nature and magnitude of immune responses. Emerging from the basic research that has revealed the molecular mechanisms and the complexity of the biologic actions of IL-2, several immunotherapeutic approaches have now focused on manipulating the levels of this cytokine in patients. These strategies range from inhibition of IL-2 to achieve immunosuppression, to the application of IL-2 as a vaccine adjuvant and in cancer therapies. This review will systematically summarize the major findings in the field and identify key areas requiring further research in order to realize the potential of IL-2 in the treatment of human diseases.
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Affiliation(s)
- Kamila Bendickova
- International Clinical Research CenterSt. Anne's University Hospital BrnoBrnoCzech Republic
| | - Jan Fric
- International Clinical Research CenterSt. Anne's University Hospital BrnoBrnoCzech Republic
- Institute of Hematology and Blood TransfusionPragueCzech Republic
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12
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Mookerjee‐Basu J, Hooper R, Gross S, Schultz B, Go CK, Samakai E, Ladner J, Nicolas E, Tian Y, Zhou B, Zaidi MR, Tourtellotte W, He S, Zhang Y, Kappes DJ, Soboloff J. Suppression of Ca 2+ signals by EGR4 controls Th1 differentiation and anti-cancer immunity in vivo. EMBO Rep 2020; 21:e48904. [PMID: 32212315 PMCID: PMC7202224 DOI: 10.15252/embr.201948904] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 02/24/2020] [Accepted: 02/27/2020] [Indexed: 12/19/2022] Open
Abstract
While the zinc finger transcription factors EGR1, EGR2, and EGR3 are recognized as critical for T-cell function, the role of EGR4 remains unstudied. Here, we show that EGR4 is rapidly upregulated upon TCR engagement, serving as a critical "brake" on T-cell activation. Hence, TCR engagement of EGR4-/- T cells leads to enhanced Ca2+ responses, driving sustained NFAT activation and hyperproliferation. This causes profound increases in IFNγ production under resting and diverse polarizing conditions that could be reversed by pharmacological attenuation of Ca2+ entry. Finally, an in vivo melanoma lung colonization assay reveals enhanced anti-tumor immunity in EGR4-/- mice, attributable to Th1 bias, Treg loss, and increased CTL generation in the tumor microenvironment. Overall, these observations reveal for the first time that EGR4 is a key regulator of T-cell differentiation and function.
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Affiliation(s)
| | - Robert Hooper
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | - Scott Gross
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | - Bryant Schultz
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | - Christina K Go
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | - Elsie Samakai
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | | | | | - Yuanyuan Tian
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of ImmunologyTemple University School of MedicinePhiladelphiaPAUSA
| | - Bo Zhou
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA
| | - M Raza Zaidi
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
| | - Warren Tourtellotte
- Department of Pathology and Laboratory MedicineCedars Sinai Medical CenterWest HollywoodCAUSA
| | - Shan He
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of ImmunologyTemple University School of MedicinePhiladelphiaPAUSA
| | - Yi Zhang
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of ImmunologyTemple University School of MedicinePhiladelphiaPAUSA
| | | | - Jonathan Soboloff
- Fels Institute for Cancer Research and Molecular BiologyPhiladelphiaPAUSA,Department of Medical Genetics & Molecular BiochemistryTemple University School of MedicinePhiladelphiaPAUSA
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13
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Crofts KF, Holbrook BC, Soto-Pantoja DR, Ornelles DA, Alexander-Miller MA. TCR Dependent Metabolic Programming Regulates Autocrine IL-4 Production Resulting in Self-Tuning of the CD8 + T Cell Activation Setpoint. Front Immunol 2020; 11:540. [PMID: 32300344 PMCID: PMC7145404 DOI: 10.3389/fimmu.2020.00540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/09/2020] [Indexed: 11/21/2022] Open
Abstract
The ability of T cells to sense and respond to environmental cues by altering their functional capabilities is critical for a safe and optimally protective immune response. One of the important properties that contributes to this goal is the activation set-point of the T cell. Here we report a new pathway through which TCR transgenic OT-I CD8+ T cells can self-tune their activation threshold. We find that in the presence of a strong TCR engagement event there is a shift in the metabolic programming of the cell where both glycolysis and oxidative phosphorylation are significantly increased. This diverges from the switch to a predominantly glycolytic profile that would be predicted following naïve T cell activation. Our data suggest this altered metabolic program results in the production of autocrine IL-4. Both metabolic pathways are required for this cytokine to be made. IL-4 signaling in the activated OT-I CD8+ T cell results in modulation of the sensitivity of the cell, establishing a higher activation setpoint that is maintained over time. Together these data demonstrate a novel mechanism for the regulation of IL-4 production in CD8+ T cells. Further, they reveal a new pathway for the self-tuning of peptide sensitivity. Finally, these studies uncover an unexpected role for oxidative phosphorylation in regulating differentiation in these cells.
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Affiliation(s)
- Kali F Crofts
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Beth C Holbrook
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - David R Soto-Pantoja
- Department of Cancer Biology, Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC, United States.,Department of Surgery, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - David A Ornelles
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Martha A Alexander-Miller
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States
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14
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Enhancer jungles establish robust tissue-specific regulatory control in the human genome. Genomics 2019; 112:2261-2270. [PMID: 31887344 DOI: 10.1016/j.ygeno.2019.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/23/2019] [Accepted: 12/25/2019] [Indexed: 11/21/2022]
Abstract
An increasing number of studies suggest that functionally redundant enhancers safeguard development via buffering gene expression against environmental and genetic perturbations. Here, we identified over-represented clusters of enhancers (enhancer jungles or EJs) in human B lymphoblastoid cells. We found that EJs tend to associate with genes involved in the activation of the immune system response. Although spanning multiple genes, the enhancers within an EJ tend to collaborate with each other on regulating a single gene. The employment of homotypic transcription factor binding sites (TFBSs) in EJ enhancers and heterotypic TFBSs between constituent enhancers within an EJ may safeguard a robust transcriptional output of the target gene. EJ enhancers evolve under a weaker selective pressure compared to regular enhancers (REs), and approximately 35% of EJs do not have orthologues in the mouse genome. In GM12878, these human-specific EJs appear to regulate genes associated with the adaptive immune system response, while the conserved EJs are associated with innate immunity. Recently acquired human EJs are associated with the higher level of target gene expression compared with conserved EJs, thus facilitating the environmental adaptation of the organism during evolution. In short, the existence of EJs is a common regulatory architecture conferring a robust regulatory control for key lineage genes.
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15
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Targeted deletion of NFAT-Interacting-Protein-(NIP) 45 resolves experimental asthma by inhibiting Innate Lymphoid Cells group 2 (ILC2). Sci Rep 2019; 9:15695. [PMID: 31666531 PMCID: PMC6821848 DOI: 10.1038/s41598-019-51690-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/02/2019] [Indexed: 12/16/2022] Open
Abstract
Here we investigated the role of NFAT-interacting protein (NIP)-45, an Interleukin (IL)-4 inducing Transcription Factor, and its impact on the differentiation of Group 2 Innate -Lymphoid -Cells (ILC2s) in the pathogenesis of asthma. NIP45, a transcription factor regulating NFATc1 activity, mRNA was found to be induced in the Peripheral Blood mononuclear cells (PMBCs) of asthmatic pre-school children with allergies and in the peripheral blood CD4+ T cells from adult asthmatic patients. In PBMCs of asthmatic and control children, NIP45 mRNA directly correlated with NFATc1 but not with T-bet. Targeted deletion of NIP45 in mice resulted in a protective phenotype in experimental asthma with reduced airway mucus production, airway hyperresponsiveness and eosinophils. This phenotype was reversed by intranasal delivery of recombinant r-IL-33. Consistently, ILC2s and not GATA3+ CD4+ T-cells were decreased in the lungs of asthmatic NIP45−/− mice. Reduced cell number spleen ILC2s could be differentiated from NIP45−/− as compared to wild-type mice after in vivo injection of a microcircle-DNA vector expressing IL-25 and decreased cytokines and ILC2 markers in ILC2 differentiated from the bone marrow of NIP45−/− mice. NIP45 thus emerges as a new therapeutic target for the resolution of the airway pathology, down-regulation of ILC2s and mucus production in asthma.
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16
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Kim GL, Lee S, Kim SJ, Lee SO, Pyo S, Rhee DK. Pulmonary Colonization Resistance to Pathogens via Noncanonical Wnt and Interleukin-17A by Intranasal pep27 Mutant Immunization. J Infect Dis 2019; 217:1977-1986. [PMID: 29579238 DOI: 10.1093/infdis/jiy158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 03/21/2018] [Indexed: 01/05/2023] Open
Abstract
Background Previous studies have focused on colonization resistance of the gut microbiota against antibiotic resistant strains. However, less research has been performed on respiratory colonization resistance. Methods Because respiratory colonization is the first step of respiratory infections, intervention to prevent colonization would represent a new approach for preventive and therapeutic measures. The Th17 response plays an important role in clearance of respiratory pathogens. Thus, harnessing the Th17 immune response in the mucosal site would be an effective method to design a respiratory mucosal vaccine. Results In this study, we show that intranasal Δpep27 immunization induces noncanonical Wnt and subsequent interleukin (IL)-17 secretion, and it inhibits Streptococcus pneumoniae, Staphylococcus aureus, and Klebsiella pneumoniae colonization. Moreover, IL-17A neutralization or nuclear factor of activated T-cell inhibition augmented bacterial colonization, indicating that noncanonical Wnt signaling is involved in pulmonary colonization resistance. Conclusions Therefore, Δpep27 immunization can provide nonspecific respiratory colonization resistance via noncanonical Wnt signaling and IL-17A-related pathways.
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Affiliation(s)
- Gyu-Lee Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Seungyeop Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Se-Jin Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Si-On Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Suhkneung Pyo
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Dong-Kwon Rhee
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
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17
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Zhu Y, Zhang M, Wang F, Sun J, Lu J, Chen R, Xie Q, Xue J, Hao C, Lin S. Calcineurin B1 subunit in human peripheral blood mononuclear cells and its role in idiopathic membranous nephropathy. Medicine (Baltimore) 2019; 98:e15231. [PMID: 30985728 PMCID: PMC6485772 DOI: 10.1097/md.0000000000015231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The immune responses involved in the pathogenesis of idiopathic membranous nephropathy (IMN) have not been fully understood. Calcineurin, a key signaling enzyme in T-cell activation, may be implicated in IMN. The present study aimed to investigate the role of calcineurin B1 subunit (CnB1) in IMN and the potential mechanism.A total of 59 biopsy-proven IMN patients and 28 healthy controls were recruited. The CnB1 expression in human peripheral blood mononuclear cells (PBMCs) was assessed by Western blotting. Knockdown and overexpression of CnB1 in Jurkat T cell line were achieved by small interference RNA (siRNA) transfection and lentiviral transduction, respectively.It was found that PBMCs CnB1 expression was significantly increased in IMN patients (P = .002), but unrelated to the severity and prognosis of IMN. Knockdown of CnB1 in Jurkat cells inhibited the nuclear factor of activated T cells (NFAT)-regulated gene expression required for T-cell activation.Our study suggested the potential role of CnB1 in the occurrence of IMN. The mechanism maybe involved the effect of CnB1 on the T-cell activation mediated by calcineurin-NFAT signaling.
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Affiliation(s)
- Ying Zhu
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Min Zhang
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Fan Wang
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Jing Sun
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Jianda Lu
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Ruiying Chen
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Qionghong Xie
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Jun Xue
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Chuanming Hao
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
| | - Shanyan Lin
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai
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18
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Kaplan MH. Opening the Black Box of Immunosuppression. THE JOURNAL OF IMMUNOLOGY 2018; 201:3147-3148. [PMID: 30455369 DOI: 10.4049/jimmunol.1801320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Mark H Kaplan
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202
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19
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Lee JU, Kim LK, Choi JM. Revisiting the Concept of Targeting NFAT to Control T Cell Immunity and Autoimmune Diseases. Front Immunol 2018; 9:2747. [PMID: 30538703 PMCID: PMC6277705 DOI: 10.3389/fimmu.2018.02747] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/08/2018] [Indexed: 01/15/2023] Open
Abstract
The nuclear factor of activated T cells (NFAT) family of transcription factors, which includes NFAT1, NFAT2, and NFAT4, are well-known to play important roles in T cell activation. Most of NFAT proteins are controlled by calcium influx upon T cell receptor and costimulatory signaling results increase of IL-2 and IL-2 receptor. NFAT3 however is not shown to be expressed in T cells and NFAT5 has not much highlighted in T cell functions yet. Recent studies demonstrate that the NFAT family proteins involve in function of lineage-specific transcription factors during differentiation of T helper 1 (Th1), Th2, Th17, regulatory T (Treg), and follicular helper T cells (Tfh). They have been studied to make physical interaction with the other transcription factors like GATA3 or Foxp3 and they also regulate Th cell signature gene expressions by direct binding on promotor region of target genes. From last decades, NFAT functions in T cells have been targeted to develop immune modulatory drugs for controlling T cell immunity in autoimmune diseases like cyclosporine A, FK506, etc. Due to their undesirable side defects, only limited application is available in human diseases. This review focuses on the recent advances in development of NFAT targeting drug as well as our understanding of each NFAT family protein in T cell biology. We also discuss updated detail molecular mechanism of NFAT functions in T cells, which would lead us to suggest an idea for developing specific NFAT inhibitors as a therapeutic drug for autoimmune diseases.
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Affiliation(s)
- Jae-Ung Lee
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
| | - Li-Kyung Kim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
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20
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Chalmin F, Humblin E, Ghiringhelli F, Végran F. Transcriptional Programs Underlying Cd4 T Cell Differentiation and Functions. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 341:1-61. [PMID: 30262030 DOI: 10.1016/bs.ircmb.2018.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Understanding the basis of cellular differentiation is a fundamental issue in developmental biology but also for the comprehension of pathological processes. In fact, the palette of developmental decisions for naive CD4 T cells is a critical aspect of the development of appropriate immune responses which could control infectious processes or cancer growth. However, the current accumulation of data on CD4 T cells biology reveals a complex world with different helper populations. Naive CD4 T cells can differentiate into different subtypes in response to cytokine stimulation. This stimulation involves a complex transcriptional network implicating the activation of Signal Transducer and Activator of Transcription but also master regulator transcription factors allowing the functions of each helper T lymphocyte subtype. In this review, we will present an overview of the transcriptional regulation which controls process of helper T cells differentiation. We will focus on the role of initiator transcriptional factors and on master regulators but also on other nonspecific transcriptional factors which refine the T helper polarization to stabilize or modulate the differentiation program.
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Affiliation(s)
- Fanny Chalmin
- Department of Medical Oncology, Centre Georges-François Leclerc, Dijon, France; Centre de Recherche INSERM LNC-UMR1231, Dijon, France; Univ. Bourgogne Franche-Comté, Dijon, France
| | - Etienne Humblin
- Department of Medical Oncology, Centre Georges-François Leclerc, Dijon, France; Centre de Recherche INSERM LNC-UMR1231, Dijon, France; Univ. Bourgogne Franche-Comté, Dijon, France
| | - François Ghiringhelli
- Department of Medical Oncology, Centre Georges-François Leclerc, Dijon, France; Centre de Recherche INSERM LNC-UMR1231, Dijon, France; Univ. Bourgogne Franche-Comté, Dijon, France; Platform of Transfer in Cancer Biology, Centre Georges-François Leclerc, Dijon, France
| | - Frédérique Végran
- Centre de Recherche INSERM LNC-UMR1231, Dijon, France; Univ. Bourgogne Franche-Comté, Dijon, France; Platform of Transfer in Cancer Biology, Centre Georges-François Leclerc, Dijon, France
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21
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STIM- and Orai-mediated calcium entry controls NF-κB activity and function in lymphocytes. Cell Calcium 2018; 74:131-143. [PMID: 30048879 DOI: 10.1016/j.ceca.2018.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/09/2018] [Accepted: 07/09/2018] [Indexed: 12/24/2022]
Abstract
The central role of Ca2+ signaling in the development of functional immunity and tolerance is well established. These signals are initiated by antigen binding to cognate receptors on lymphocytes that trigger store operated Ca2+ entry (SOCE). The underlying mechanism of SOCE in lymphocytes involves TCR and BCR mediated activation of Stromal Interaction Molecule 1 and 2 (STIM1/2) molecules embedded in the ER membrane leading to their activation of Orai channels in the plasma membrane. STIM/Orai dependent Ca2+ signals guide key antigen induced lymphocyte development and function principally through direct regulation of Ca2+ dependent transcription factors. The role of Ca2+ signaling in NFAT activation and signaling is well known and has been studied extensively, but a wide appreciation and mechanistic understanding of how Ca2+ signals also shape the activation and specificity of NF-κB dependent gene expression has lagged. Here we discuss and interpret what is known about Ca2+ dependent mechanisms of NF-kB activation, including what is known and the gaps in our understanding of how these signals control lymphocyte development and function.
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22
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Kohno K, Koya-Miyata S, Harashima A, Ariyasu T, Ushio S. NK-4 exerts selective regulatory effects on the activation and function of allergy-related Th2 cells. PLoS One 2018; 13:e0199666. [PMID: 29933387 PMCID: PMC6014662 DOI: 10.1371/journal.pone.0199666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022] Open
Abstract
NK-4 is the main component of the antiallergic drug Lumin, which has been in popular usage since the early 1950s. In this study, we examined whether NK-4 exerts a regulatory effect on the activation and effector function of Th2 cells. NK-4 inhibited IL-4 production by anti-CD3ε mAb-stimulated BALB/c mouse spleen cells, whereas NK-4 had little effect on IFN-γ production. IL-4 and IL-5 secretion by anti-CD3ε mAb- or antigen-stimulated Th2 cells (D10.G4.1) was abrogated by NK-4 without affecting cell numbers, whereas IFN-γ secretion by activated Th1 cells was unchanged. Mechanistic analysis revealed that NK-4 inhibited mRNA expression of the Th2-associated transcription factors GATA-3 and NFATc1 in anti-CD3ε mAb-stimulated D10.G4.1 cells. Regarding the regulation of Th2 cell effector functions, NK-4 inhibited the secretion of eotaxin and thymus and activation-regulated chemokine (TARC) by normal human dermal fibroblasts in response to IL-4 and/or TNF-α. NK-4 achieved TARC attenuation comparable to what is observed with suplatast tosilate, an antiallergic drug that selectively inhibits Th2 cytokine production, at 14-fold lower concentrations of suplatast tosilate. Dexamethasone increased TARC production by 2.2- to 2.6-fold of control cultures. NK-4 successfully inhibited the STAT6 signaling pathway, suggesting a potential mechanism for down-regulating chemokines expression. In addition, NK-4 abrogated IL-4-driven modulation of cytokine production profile in human monocytic THP-1 cells from proinflammatory to anti-inflammatory response, as seen in the inverted ratio of TNF-α to IL-10 produced in response to LPS. These results suggest that NK-4 could prevent IL-4-driven polarization to alternatively activated macrophages, which are proposed to have pathogenic roles in allergic asthma. The importance of Th2 cytokines and chemokines in the development and progression of type 2 inflammatory disorders has been highlighted by recent advance in our understanding the immunological mechanism underlying allergic disease. Our results support the use of NK-4 as a reasonable therapeutic option to alleviate Th2-mediated allergic inflammation.
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Affiliation(s)
- Keizo Kohno
- R&D Division, Hayashibara Co., Ltd., Okayama, Japan
- * E-mail:
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23
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Abstract
Nuclear factor of activated T cells (NFAT) was first described almost three decades ago as a Ca
2+/calcineurin-regulated transcription factor in T cells. Since then, a large body of research uncovered the regulation and physiological function of different NFAT homologues in the immune system and many other tissues. In this review, we will discuss novel roles of NFAT in T cells, focusing mainly on its function in humoral immune responses, immunological tolerance, and the regulation of immune metabolism.
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Affiliation(s)
- Martin Vaeth
- Department of Pathology, New York University School of Medicine, New York, NY, 10016, USA
| | - Stefan Feske
- Department of Pathology, New York University School of Medicine, New York, NY, 10016, USA
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Zhang J, Xu E, Ren C, Yang HJ, Zhang Y, Sun W, Kong X, Zhang W, Chen M, Huang E, Chen X. Genetic Ablation of Rbm38 Promotes Lymphomagenesis in the Context of Mutant p53 by Downregulating PTEN. Cancer Res 2018; 78:1511-1521. [PMID: 29330147 DOI: 10.1158/0008-5472.can-17-2457] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/16/2017] [Accepted: 01/09/2018] [Indexed: 11/16/2022]
Abstract
Mutant p53 exerts gain-of-function effects that drive metastatic progression and therapeutic resistance, but the basis for these effects remain obscure. The RNA binding protein RBM38 limits translation of mutant p53 and is often altered in tumors harboring it. Here we show how loss of Rbm38 significantly alters cancer susceptibility in mutant p53 knock-in mice by shortening lifespan, altering tumor incidence, and promoting T-cell lymphomagenesis. Loss of Rbm38 enhanced mutant p53 expression and decreased expression of the tumor suppressor Pten, a key regulator of T-cell development. Furthermore, Rbm38 was required for Pten expression via stabilization of Pten mRNA through an AU-rich element in its 3'UTR. Our results suggest that Rbm38 controls T-cell lymphomagenesis by jointly modulating mutant p53 and Pten, with possible therapeutic implications for treating T-cell malignancies.Significance: An RNA-binding protein controls T-cell lymphomagenesis by jointly modulating mutant p53 and PTEN, with possible therapeutic implications for treating T-cell malignancies. Cancer Res; 78(6); 1511-21. ©2018 AACR.
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Affiliation(s)
- Jin Zhang
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California.
| | - Enshun Xu
- College of Agriculture, Nanjing Agriculture University, Nanjing, China
| | - Cong Ren
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Hee Jung Yang
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California
| | - Yanhong Zhang
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California
| | - Wenqiang Sun
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California
| | - Xiangmudong Kong
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California
| | - Weici Zhang
- Division of Rheumatology/Allergy and Clinical Immunology, School of Medicine, University of California at Davis, California
| | - Mingyi Chen
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Eric Huang
- Department of Pathology and Laboratory Medicine, School of Medicine, University of California at Davis, California
| | - Xinbin Chen
- Department of Surgical and Radiological Sciences, Schools of Veterinary Medicine and Medicine, University of California at Davis, California.
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25
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Choi YJ, Kim E, Reza AMMT, Hong K, Song H, Park C, Cho SK, Lee K, Prather RS, Kim JH. Recombination activating gene-2 null severe combined immunodeficient pigs and mice engraft human induced pluripotent stem cells differently. Oncotarget 2017; 8:69398-69407. [PMID: 29050212 PMCID: PMC5642487 DOI: 10.18632/oncotarget.20626] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/23/2017] [Indexed: 01/10/2023] Open
Abstract
This study comparatively investigated the transcriptional, physiological, and phenotypic differences of the immune disorder between severe combined immunodeficient (SCID) mouse and pig models. We discovered that the recombination activating gene-2 (Rag-2) SCID mice, but not RAG-2 SCID pigs, showed intense, infrequent, and mild cluster of CD3+-, CD4+-, and CD8+ signals respectively, suggesting that distinct species-specific effects exist. Furthermore, the expression of six relevant genes (NFATC1, CD79B, CD2, BLNK, FOXO1, and CD40) was more downregulated than that in the Rag-2 SCID mice, which provides a partial rationale for the death of T/B cells in the lymphoid organs of RAG-2 SCID pigs but not in Rag-2 SCID mice. Further, NK cell maturation-related gene expression was significantly lower in RAG-2 SCID pigs than in Rag-2 SCID mice. Consistently, the RAG-2 SCID pigs, but not Rag-2 SCID mice, developed human induced pluripotent stem cell-derived teratomas that were the same as those of perforin/Rag-2 SCID mice. Therefore, these unexpected findings indicate the superiority of RAG-2 SCID pigs over Rag-2 SCID mice as a suitable model for investigating human diseases.
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Affiliation(s)
- Yun-Jung Choi
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - EunSu Kim
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - Abu Musa Md Talimur Reza
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - Kwonho Hong
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
| | - Seong-Keun Cho
- Department of Animal Science, Pusan National University, Miryang, Gyeongnam, Republic of Korea
| | - Kiho Lee
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Randall S. Prather
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO, USA
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, Republic of Korea
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Identification of a Novel Alternatively Spliced Form of Inflammatory Regulator SWAP-70-Like Adapter of T Cells. Int J Inflam 2017; 2017:1324735. [PMID: 28523202 PMCID: PMC5421089 DOI: 10.1155/2017/1324735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 03/27/2017] [Indexed: 11/18/2022] Open
Abstract
Activation of naive CD4+ T cells results in the development of several distinct subsets of effector Th cells, including Th2 cells that play a pivotal role in allergic inflammation and helminthic infections. SWAP-70-like adapter of T cells (SLAT), also known as Def6 or IBP, is a guanine nucleotide exchange factor for small GTPases, which regulates CD4+ T cell inflammatory responses by controlling Ca2+/NFAT signaling. In this study, we have identified a novel alternatively spliced isoform of SLAT, named SLAT2, which lacks the region encoded by exons 2-7 of the Def6 gene. SLAT2 was selectively expressed in differentiated Th2 cells after the second round of in vitro stimulation, but not in differentiated Th1, Th17, or regulatory T (Treg) cells. Functional assays revealed that SLAT2 shared with SLAT the ability to enhance T cell receptor- (TCR-) mediated activation of NFAT and production of IL-4 but was unable to enhance TCR-induced adhesion to ICAM-1. Ectopic expression of SLAT2 or SLAT in Jurkat T cells resulted in the expression of distinct forms of filopodia, namely, short versus long ones, respectively. These results demonstrate that modulating either SLAT2 or SLAT protein expression could play critical roles in cytokine production and actin reorganization during inflammatory immune responses.
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27
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Pachulec E, Neitzke-Montinelli V, Viola JPB. NFAT2 Regulates Generation of Innate-Like CD8 + T Lymphocytes and CD8 + T Lymphocytes Responses. Front Immunol 2016; 7:411. [PMID: 27766099 PMCID: PMC5052263 DOI: 10.3389/fimmu.2016.00411] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/22/2016] [Indexed: 11/13/2022] Open
Abstract
Nuclear factor of activated T cells (NFAT) 2 null mutant mice die in utero of cardiac failure, precluding analysis of the role of NFAT2 in lymphocyte responses. Only the NFAT2-/-/Rag-1-/- chimeric mice model gave insight into the role of NFAT2 transcription factor in T lymphocyte development, activation, and differentiation. As reports are mainly focused on the role of NFAT2 in CD4+ T lymphocytes activation and differentiation, we decided to investigate NFAT2's impact on CD8+ T lymphocyte responses. We report that NFAT2 is phosphorylated and inactive in the cytoplasm of naive CD8+ T cells, and upon TCR stimulation, it is dephosphorylated and translocated into the nucleus. To study the role of NFAT2 in CD8+ T responses, we employed NFAT2fl/flCD4-Cre mice with NFAT2 deletion specifically in T cells. Interestingly, the absence of NFAT2 in T cells resulted in increased percentage of non-conventional innate-like CD8+ T cells. These cells were CD122+, rapid producer of interferon gamma (IFN-γ) and had characteristics of conventional memory CD8+ T cells. We also observed an expansion of PLZF+ expressing CD3+ thymocyte population in the absence of NFAT2 and increased IL-4 production. Furthermore, we found that CD8+ T lymphocytes deficient in NFAT2 had reduced activation, proliferation, and IFN-γ and IL-2 production at suboptimal TCR strength. NFAT2 absence did not significantly influence differentiation of CD8+ T cells into cytotoxic effector cells but reduced their IFN-γ production. This work documents NFAT2 as a negative regulator of innate-like CD8+ T cells development. NFAT2 is required for complete CD8+ T cell responses at suboptimal TCR stimulation and regulates IFN-γ production by cytotoxic CD8+ T cells in vitro.
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Affiliation(s)
- Emilia Pachulec
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA) , Rio de Janeiro , Brazil
| | | | - João P B Viola
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA) , Rio de Janeiro , Brazil
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Bao M, Wang Y, Liu Y, Shi P, Lu H, Sha W, Weng L, Hanabuchi S, Qin J, Plumas J, Chaperot L, Zhang Z, Liu YJ. NFATC3 promotes IRF7 transcriptional activity in plasmacy--toid dendritic cells. J Exp Med 2016; 213:2383-2398. [PMID: 27697837 PMCID: PMC5068237 DOI: 10.1084/jem.20160438] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 09/08/2016] [Indexed: 01/31/2023] Open
Abstract
The transcription factor NFATC3 binds to IRF7 and to type 1 IFN promoters, regulating IRF7-mediated IFN expression in pDCs. Plasmacytoid dendritic cells (pDCs) rapidly produce large amounts of type 1 interferon (IFN) after Toll-like receptor 7 and 9 engagements. This specialized function of type 1 IFN production is directly linked to the constitutive expression of IRF7, the master transcription factor for type 1 IFN production. However, the IRF7 regulatory network in pDCs remains largely unknown. In this study, we identify that the transcription factor NFATC3 specifically binds to IRF7 and enhances IRF7-mediated IFN production. Furthermore, knockout of NFATC3 greatly reduced the CpG DNA–induced nuclear translocation of IRF7, which resulted in impaired type 1 IFN production in vitro and in vivo. In addition, we found that NFATC3 and IRF7 both bound to type 1 IFN promoters and that the NFAT binding site in IFN promoters was required for IRF7-mediated IFN expression. Collectively, our study shows that the transcription factor NFATC3 binds to IRF7 and functions synergistically to enhance IRF7-mediated IFN expression in pDCs.
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Affiliation(s)
- Musheng Bao
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - York Wang
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - Ying Liu
- Baylor Institute for Immunology Research, Dallas, TX 75204
| | - Peiqing Shi
- Baylor Institute for Immunology Research, Dallas, TX 75204
| | - Hongbo Lu
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - Wenwen Sha
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - Leiyun Weng
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - Shino Hanabuchi
- Baylor Institute for Immunology Research, Dallas, TX 75204.,MedImmune, LLC, Gaithersburg, MD 20878
| | - Jun Qin
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Joel Plumas
- Etablissement Français du Sang Rhone-Alpes, 38701 La Tronche, France
| | - Laurence Chaperot
- Etablissement Français du Sang Rhone-Alpes, 38701 La Tronche, France
| | - Zhiqiang Zhang
- Immunobiology and Transplant Research, Houston Methodist Research Institute, Houston, TX 77030
| | - Yong-Jun Liu
- Baylor Institute for Immunology Research, Dallas, TX 75204 .,MedImmune, LLC, Gaithersburg, MD 20878
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29
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Gabriel CH, Gross F, Karl M, Stephanowitz H, Hennig AF, Weber M, Gryzik S, Bachmann I, Hecklau K, Wienands J, Schuchhardt J, Herzel H, Radbruch A, Krause E, Baumgrass R. Identification of Novel Nuclear Factor of Activated T Cell (NFAT)-associated Proteins in T Cells. J Biol Chem 2016; 291:24172-24187. [PMID: 27637333 DOI: 10.1074/jbc.m116.739326] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 09/13/2016] [Indexed: 12/12/2022] Open
Abstract
Transcription factors of the nuclear factor of activated T cell (NFAT) family are essential for antigen-specific T cell activation and differentiation. Their cooperative DNA binding with other transcription factors, such as AP1 proteins (FOS, JUN, and JUNB), FOXP3, IRFs, and EGR1, dictates the gene regulatory action of NFATs. To identify as yet unknown interaction partners of NFAT, we purified biotin-tagged NFATc1/αA, NFATc1/βC, and NFATc2/C protein complexes and analyzed their components by stable isotope labeling by amino acids in cell culture-based mass spectrometry. We revealed more than 170 NFAT-associated proteins, half of which are involved in transcriptional regulation. Among them are many hitherto unknown interaction partners of NFATc1 and NFATc2 in T cells, such as Raptor, CHEK1, CREB1, RUNX1, SATB1, Ikaros, and Helios. The association of NFATc2 with several other transcription factors is DNA-dependent, indicating cooperative DNA binding. Moreover, our computational analysis discovered that binding motifs for RUNX and CREB1 are found preferentially in the direct vicinity of NFAT-binding motifs and in a distinct orientation to them. Furthermore, we provide evidence that mTOR and CHEK1 kinase activity influence NFAT's transcriptional potency. Finally, our dataset of NFAT-associated proteins provides a good basis to further study NFAT's diverse functions and how these are modulated due to the interplay of multiple interaction partners.
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Affiliation(s)
- Christian H Gabriel
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Fridolin Gross
- the Institute for Theoretical Biology, Charité and Humboldt University Berlin, 10015 Berlin
| | - Martin Karl
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | | | - Anna Floriane Hennig
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Melanie Weber
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Stefanie Gryzik
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | | | - Katharina Hecklau
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Jürgen Wienands
- the Institute of Cellular and Molecular Immunology, Georg-August-University of Göttingen, 37073 Göttingen, Germany
| | | | - Hanspeter Herzel
- the Institute for Theoretical Biology, Charité and Humboldt University Berlin, 10015 Berlin
| | - Andreas Radbruch
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Eberhard Krause
- the Leibniz-Institut für Molekulare Pharmakologie, 13125 Berlin
| | - Ria Baumgrass
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin,
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30
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Zhang Q, Tian Y, Duan J, Wu J, Yan S, Chen H, Meng X, Owusu-Ansah KG, Zheng S. Chelerythrine ameliorates acute cardiac allograft rejection in mice. Transpl Immunol 2016; 38:78-83. [PMID: 27450116 DOI: 10.1016/j.trim.2016.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 07/17/2016] [Accepted: 07/18/2016] [Indexed: 01/23/2023]
Abstract
The improvement in graft survival over the past decade has been mainly due to calcineurin inhibitors, which interfere with the calcium-mediated pathway. Recently, other pathways such as those mediated by protein kinase C (PKC) are coming into view. The purpose of this study was to assess the immunosuppressive properties of chelerythrine, a specific PKC inhibitor, in preventing acute rejection in murine heterotopic heart transplantation. Mice were randomly divided into control and chelerythrine treated group. The control group received PBS while the chelerythrine treated group was given intraperitoneal injection doses (1, 5, 10mg/kg) of chelerythrine from day 0 to day 14 after heart transplantation. Six days after transplantation, cardiac allografts were harvested for further tests. The mean survival time (MST) of the cardiac allograft in untreated animals was 8days while graft MSTs observed in chelerythrine treated group was 13 and 23days at 5 and 10mg/kg treatment doses, respectively (P<0.05). Histologic assessment of the allograft in chelerythrine group showed a significant decline in histologic rejection score, as well as CD4+ and CD8+ T cell infiltration and ICAM-1+ endothelial cell activation. Down-regulation of Th1/Th2 cytokine expression was observed in chelerythrine treatment group. Meanwhile, chelerythrine was also found to inhibit the dephosphorylation of phosphorylated nuclear factor of activated T cells (NFAT) protein 1 and 4.
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Affiliation(s)
- Qiyi Zhang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Yang Tian
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Jixuan Duan
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Jingjin Wu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Sheng Yan
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Hui Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Xueqin Meng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Kwabena Gyabaah Owusu-Ansah
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Province, Hangzhou, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China; Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou, China.
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31
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Cell cycle and apoptosis regulation by NFAT transcription factors: new roles for an old player. Cell Death Dis 2016; 7:e2199. [PMID: 27100893 PMCID: PMC4855676 DOI: 10.1038/cddis.2016.97] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/13/2016] [Accepted: 03/16/2016] [Indexed: 12/11/2022]
Abstract
The NFAT (nuclear factor of activated T cells) family of transcription factors consists of four Ca2+-regulated members (NFAT1–NFAT4), which were first described in T lymphocytes. In addition to their well-documented role in T lymphocytes, where they control gene expression during cell activation and differentiation, NFAT proteins are also expressed in a wide range of cells and tissue types and regulate genes involved in cell cycle, apoptosis, angiogenesis and metastasis. The NFAT proteins share a highly conserved DNA-binding domain (DBD), which allows all NFAT members to bind to the same DNA sequence in enhancers or promoter regions. The same DNA-binding specificity suggests redundant roles for the NFAT proteins, which is true during the regulation of some genes such as IL-2 and p21. However, it has become increasingly clear that different NFAT proteins and even isoforms can have unique functions. In this review, we address the possible reasons for these distinct roles, particularly regarding N- and C-terminal transactivation regions (TADs) and the partner proteins that interact with these TADs. We also discuss the genes regulated by NFAT during cell cycle regulation and apoptosis and the role of NFAT during tumorigenesis.
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32
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Koch S, Reppert S, Finotto S. NFATc1 deletion in T lymphocytes inhibits the allergic trait in a murine model of asthma. Clin Exp Allergy 2016; 45:1356-66. [PMID: 25640055 DOI: 10.1111/cea.12493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 01/09/2014] [Accepted: 01/16/2014] [Indexed: 12/29/2022]
Abstract
BACKGROUND NFATc1 isoforms are highly regulated in peripheral T cells where they contribute to the effector function and cell homeostasis. OBJECTIVE Here, we investigated the role of NFATc1 in asthma and in T cells. METHODS In a murine model of allergic asthma, we analysed differences in T-cell development in this allergic disease model, between wild-type and NFATc1 conditional knockout mice. Thus, we performed quantitative real-time PCR to investigate the mRNA expression of Th2-associated genes as well as genes that are involved in IgE immunoglobulin class-switch. Additionally, we used ELISA, Western blot and flow cytometry (FACS) to analyse protein concentrations of Th1-, Th2- and Th17-specific transcription factors and cytokines and the Th2 chemokine, thymus and activation-regulated chemokine/chemokine ligand 17 (TARC/CCL17) by ELISA. RESULTS Mice lacking NFATc1 in CD4(+) T cells display a significant reduction in lung Th2 and Th17 as well as an increase of Th1 cells in an experimental asthma model. Additionally, Batf gene, a recently described transcription factor of the Th2 and Th17 cell differentiation as well as a key T and B transcription factor involved in the IgE immunoglobulin class-switch, was found decreased in the lungs of these mice. As a consequence, serum OVA-specific IgE and IgG1 levels were found significantly decreased after allergen exposure and in the absence of NFATc1 in T cells in experimental allergic asthma. CONCLUSIONS AND CLINICAL RELEVANCE Targeting NFATc1 in T lymphocytes ameliorated the allergic trait in the airways of NFATc1(fl/fl) xCD4Cre mice. NFATc1 emerges as a novel target for anti-allergy intervention.
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Affiliation(s)
- S Koch
- Division of Molecular Pneumology, Department of Anaesthesiology, University Hospital Erlangen, Erlangen, Germany
| | - S Reppert
- Division of Molecular Pneumology, Department of Anaesthesiology, University Hospital Erlangen, Erlangen, Germany
| | - S Finotto
- Division of Molecular Pneumology, Department of Anaesthesiology, University Hospital Erlangen, Erlangen, Germany
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33
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Seo W, Taniuchi I. Transcriptional regulation of early T-cell development in the thymus. Eur J Immunol 2016; 46:531-8. [DOI: 10.1002/eji.201545821] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/30/2015] [Accepted: 01/08/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Wooseok Seo
- Laboratory for Transcriptional Regulation; RIKEN Center for Integrative Medical Sciences; Yokohama Kanagawa Japan
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation; RIKEN Center for Integrative Medical Sciences; Yokohama Kanagawa Japan
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Jiang H, Promchan K, Lin BR, Lockett S, Chen D, Marshall H, Badralmaa Y, Natarajan V. LZTFL1 Upregulated by All-Trans Retinoic Acid during CD4+ T Cell Activation Enhances IL-5 Production. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2016; 196:1081-90. [PMID: 26700766 PMCID: PMC4724573 DOI: 10.4049/jimmunol.1500719] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 11/17/2015] [Indexed: 01/05/2023]
Abstract
Retinoic acids, which are metabolites of vitamin A, have been shown to be involved in multiple T cell effector responses through their binding to the retinoic acid receptor, a ligand-activated transcription factor. Because the molecular mechanism of regulation by retinoic acid is still not fully uncovered, we investigated the gene expression profile of all-trans retinoic acid (ATRA)-treated human CD4(+) T cells. Leucine zipper transcription factor-like 1 (LZTFL1) was upregulated by ATRA in a dose- and time-dependent manner. The expression of LZTFL1 depended on both ATRA and TCR signaling. LZTFL1 accumulated in the plasma membrane compartment of human CD4(+) T cells, and, during immunological synapse formation, it transiently redistributed to the T cell and APC contact zone, indicating its role in T cell activation. Live-cell imaging demonstrates that at the initial stage of immunological synapse formation, LZTFL1 is concentrated at the APC contact site, and, during later stages, it relocates to the distal pole. Knockdown of LZTFL1 reduced the basal- and ATRA-induced levels of IL-5 in CD4(+) T cells, and overexpression of LZTFL1 enhanced the TCR-mediated NFAT signaling, suggesting that LZTFL1 is an important regulator of ATRA-induced T cell response. Together, these data indicate that LZTFL1 modulates T cell activation and IL-5 levels.
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Affiliation(s)
- Hong Jiang
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Kanyarat Promchan
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Bor-Ruei Lin
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Stephen Lockett
- Optical Microscopy and Analysis Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702
| | - De Chen
- Optical Microscopy and Analysis Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702
| | - Heather Marshall
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Yunden Badralmaa
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Ven Natarajan
- Laboratory of Molecular Cell Biology, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
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López-Rodríguez C, Aramburu J, Berga-Bolaños R. Transcription factors and target genes of pre-TCR signaling. Cell Mol Life Sci 2015; 72:2305-21. [PMID: 25702312 PMCID: PMC11113633 DOI: 10.1007/s00018-015-1864-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 01/22/2015] [Accepted: 02/16/2015] [Indexed: 11/27/2022]
Abstract
Almost 30 years ago pioneering work by the laboratories of Harald von Boehmer and Susumo Tonegawa provided the first indications that developing thymocytes could assemble a functional TCRβ chain-containing receptor complex, the pre-TCR, before TCRα expression. The discovery and study of the pre-TCR complex revealed paradigms of signaling pathways in control of cell survival and proliferation, and culminated in the recognition of the multifunctional nature of this receptor. As a receptor integrated in a dynamic developmental process, the pre-TCR must be viewed not only in the light of the biological outcomes it promotes, but also in context with those molecular processes that drive its expression in thymocytes. This review article focuses on transcription factors and target genes activated by the pre-TCR to drive its different outcomes.
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Affiliation(s)
- Cristina López-Rodríguez
- Immunology Unit, Department of Experimental and Health Sciences and Barcelona Biomedical Research Park, Universitat Pompeu Fabra, C/Doctor Aiguader Nº88, 08003, Barcelona, Barcelona, Spain,
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36
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Reppert S, Zinser E, Holzinger C, Sandrock L, Koch S, Finotto S. NFATc1 deficiency in T cells protects mice from experimental autoimmune encephalomyelitis. Eur J Immunol 2015; 45:1426-40. [PMID: 25689841 PMCID: PMC6681150 DOI: 10.1002/eji.201445150] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 01/28/2015] [Accepted: 02/12/2015] [Indexed: 12/19/2022]
Abstract
NFATc1 is a member of the nuclear factor of activated T cells (NFAT) family of transcription factors. NFAT is activated upon T-cell receptor activation followed by intracytoplasmatic calcium influx where calmodulin, a calcium sensor protein, activates the phosphatase calcineurin that dephosphorylates NFAT proteins and results in NFAT nuclear import. Here, we show the analysis of conditional NFATc1-deficient mice bearing a deletion of NFATc1 in CD4(+) and CD8(+) T cells. NFATc1-deficient CD4(+) T cells polarized under Th17 conditions express reduced levels of the Th17-associated transcription factor RORγT (where ROR is RAR-related orphan receptor) as well as the Th17-associated cytokines IL-17A, IL-17F, IL-21, and IL-10. In the murine model of experimental EAE, we found a strong reduction of the disease outcome in conditional NFATc1-deficient mice, as compared with control littermates. This was accompanied by a diminished inflammation in the brain and spinal cord and reduced IL-17A and IFN-γ expression by antigen-specific spleen, spinal cord, and brain cells. Altogether, these results reveal an important role of NFATc1 in inducing Th17-cell responses and IFN-γ, both being relevant for the EAE development.
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MESH Headings
- Animals
- Cell Differentiation/immunology
- Cytokines/metabolism
- Down-Regulation
- Encephalomyelitis, Autoimmune, Experimental/etiology
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/prevention & control
- Interferon-gamma/biosynthesis
- Interferon-gamma/genetics
- Interleukin-10/metabolism
- Interleukin-17/genetics
- Interleukin-17/metabolism
- Interleukins/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- NFATC Transcription Factors/deficiency
- NFATC Transcription Factors/genetics
- NFATC Transcription Factors/immunology
- Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Interleukin/metabolism
- Spleen/immunology
- Spleen/pathology
- T-Lymphocytes/immunology
- T-Lymphocytes/pathology
- Th1 Cells/immunology
- Th1 Cells/pathology
- Th17 Cells/immunology
- Th17 Cells/pathology
- Transforming Growth Factor beta1/metabolism
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Affiliation(s)
- Sarah Reppert
- Department of Molecular PneumologyFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
| | - Elisabeth Zinser
- Department of Immune ModulationFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
| | - Corinna Holzinger
- Department of Molecular PneumologyFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
| | - Lena Sandrock
- Department of Immune ModulationFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
| | - Sonja Koch
- Department of Molecular PneumologyFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
| | - Susetta Finotto
- Department of Molecular PneumologyFriedrich‐Alexander‐Universität (FAU) Erlangen‐NürnbergUniversitätsklinikum ErlangenErlangenGermany
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37
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Impact on antibody responses of B-cell-restricted transgenic expression of a viral gene inhibiting activation of NF-κB and NFAT. Arch Virol 2015; 160:1477-88. [PMID: 25864175 DOI: 10.1007/s00705-015-2419-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 03/31/2015] [Indexed: 10/23/2022]
Abstract
In this work, we have assessed the impact in vivo of the evasion gene A238L of African swine fever virus, an inhibitor of both NF-κB- and NFAT-mediated transcription. The A238L gene was selectively expressed in mouse B lymphocytes using the promoter and enhancer sequences of the mouse Ig μ heavy chain. The IgM primary and IgG2b secondary serological responses and the number of splenic germinal centres in response to the TD antigens DNP-keyhole limpet hemocyanin and sheep red blood cells, respectively, were both lower in the transgenic mice, whereas the response to the TI type-1 and type-2 antigens DNP-Ficoll and DNP-LPS, respectively, were normal, except for the increased levels of IgG3 at day 14 in the DNP-LPS-immunized mice. Thus, it appears that neither p65 (NF-κB) nor NFAT is essential for B-cell development but, in a manner that is still unclear, may be relevant for their function.
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38
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Christie D, Zhu J. Transcriptional regulatory networks for CD4 T cell differentiation. Curr Top Microbiol Immunol 2015; 381:125-72. [PMID: 24839135 DOI: 10.1007/82_2014_372] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
CD4(+) T cells play a central role in controlling the adaptive immune response by secreting cytokines to activate target cells. Naïve CD4(+) T cells differentiate into at least four subsets, Th1Th1 , Th2Th2 , Th17Th17 , and inducible regulatory T cellsregulatory T cells , each with unique functions for pathogen elimination. The differentiation of these subsets is induced in response to cytokine stimulation, which is translated into Stat activation, followed by induction of master regulator transcription factorstranscription factors . In addition to these factors, multiple other transcription factors, both subset specific and shared, are also involved in promoting subset differentiation. This review will focus on the network of transcription factors that control CD4(+) T cell differentiation.
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Affiliation(s)
- Darah Christie
- Molecular and Cellular Immunoregulation Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA,
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Dietz L, Frommer F, Vogel AL, Vaeth M, Serfling E, Waisman A, Buttmann M, Berberich-Siebelt F. NFAT1 deficit and NFAT2 deficit attenuate EAE via different mechanisms. Eur J Immunol 2015; 45:1377-89. [DOI: 10.1002/eji.201444638] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 09/30/2014] [Accepted: 01/27/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Lena Dietz
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
| | - Friederike Frommer
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
- Institute for Molecular Medicine; University Medical Center of the Johannes Gutenberg; University of Mainz; Mainz Germany
| | - Anna-Lena Vogel
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
| | - Martin Vaeth
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
| | - Edgar Serfling
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
| | - Ari Waisman
- Institute for Molecular Medicine; University Medical Center of the Johannes Gutenberg; University of Mainz; Mainz Germany
| | - Mathias Buttmann
- Department of Neurology; University of Wuerzburg; Wuerzburg Germany
| | - Friederike Berberich-Siebelt
- Institute of Pathology; University of Wuerzburg; Wuerzburg Germany
- Comprehensive Cancer Center Mainfranken; University of Wuerzburg; Wuerzburg Germany
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40
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Baba Y, Kurosaki T. Role of Calcium Signaling in B Cell Activation and Biology. Curr Top Microbiol Immunol 2015; 393:143-174. [PMID: 26369772 DOI: 10.1007/82_2015_477] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Increase in intracellular levels of calcium ions (Ca2+) is one of the key triggering signals for the development of B cell response to the antigen. The diverse Ca2+ signals finely controlled by multiple factors participate in the regulation of gene expression, B cell development, and effector functions. B cell receptor (BCR)-initiated Ca2+ mobilization is sourced from two pathways: one is the release of Ca2+ from the intracellular stores, endoplasmic reticulum (ER), and other is the prolonged influx of extracellular Ca2+ induced by depleting the stores via store-operated calcium entry (SOCE) and calcium release-activated calcium (CRAC) channels. The identification of stromal interaction molecule 1(STIM1), the ER Ca2+ sensor, and Orai1, a key subunit of the CRAC channel pore, has now provided the tools to understand the mode of Ca2+ influx regulation and physiological relevance. Herein, we discuss our current understanding of the molecular mechanisms underlying BCR-triggered Ca2+ signaling as well as its contribution to the B cell biological processes and diseases.
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Affiliation(s)
- Yoshihiro Baba
- Laboratory for Lymphocyte Differentiation, WPI Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan. .,Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences (IMS), Kanagawa, Yokohama, 230-0045, Japan.
| | - Tomohiro Kurosaki
- Laboratory for Lymphocyte Differentiation, WPI Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan.,Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences (IMS), Kanagawa, Yokohama, 230-0045, Japan
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41
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Abstract
Osteoclasts are unique cells that degrade the bone matrix. These large multinucleated cells differentiate from the monocyte/macrophage lineage upon stimulation by two essential cytokines, macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor-kappa B (NF-κB) ligand (RANKL). Activation of transcription factors such as microphthalmia transcription factor (MITF), c-Fos, NF-κB, and nuclear factor-activated T cells c1 (NFATc1) is required for sufficient osteoclast differentiation. In particular, NFATc1 plays the role of a master transcription regulator of osteoclast differentiation. To date, several mechanisms, including transcription, methylation, ubiquitination, acetylation, and non-coding RNAs, have been shown to regulate expression and activation of NFATc1. In this review, we have summarized the various mechanisms that control NFATc1 regulation during osteoclast differentiation.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Korea
| | - Nacksung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Korea
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42
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So JS, Kim GC, Song M, Lee CG, Park E, Kim HJ, Kim YS, Jun CD, Im SH. 6-Methoxyflavone inhibits NFAT translocation into the nucleus and suppresses T cell activation. THE JOURNAL OF IMMUNOLOGY 2014; 193:2772-83. [PMID: 25114106 DOI: 10.4049/jimmunol.1400285] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
NFAT plays a crucial role in the immune system by regulating the transcription of inducible genes during immune responses. In T cells, NFAT proteins govern various cellular events related to T cell development, activation, tolerance induction, and differentiation. We previously reported the NFAT1-dependent enhancer activity of conserved noncoding sequence (CNS)-9, a distal cis-acting element, in the regulation of IL-10 transcription in T cells. In this study, we developed a T cell-based reporter system to identify compounds that modulate the regulatory activity of CNS-9. Among the identified candidates, 6-methoxyflavone (6-MF) significantly inhibited the enhancer activity of CNS-9, thereby reducing IL-10 expression in T cells without affecting cell viability. 6-MF also downregulated the transcription of NFAT1 target genes such as IL-4, IL-13, and IFN-γ. Treatment of 6-MF inhibited the translocation of NFAT1 into the nucleus, which consequently interrupted NFAT1 binding to the target loci, without affecting the expression or dephosphorylation of NFAT1. Treatment of 6-MF to CD4(+) T cells or B cells isolated from mice with atopic dermatitis significantly reduced disease-associated cytokine production, as well as the levels of IgE. In addition, oral administration of 6-MF to atopic dermatitis mice ameliorated disease symptoms by reducing serum IgE levels and infiltrating lymphocytes. Conclusively, our results suggest that 6-MF can be a potential candidate for the development of an effective immunomodulator via the suppression of NFAT-mediated T cell activation.
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Affiliation(s)
- Jae-Seon So
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea; Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10021
| | - Gi-Cheon Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea; Academy of Immunology and Microbiology, Institute for Basic Science, Pohang 790-784, Republic of Korea
| | - Minkyung Song
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea; Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Medical College, New York, NY 10021
| | - Choong-Gu Lee
- Academy of Immunology and Microbiology, Institute for Basic Science, Pohang 790-784, Republic of Korea
| | - Eunbee Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea; Academy of Immunology and Microbiology, Institute for Basic Science, Pohang 790-784, Republic of Korea
| | - Ho Jin Kim
- National Cancer Center, Korea, Goyang 410-769, Republic of Korea
| | - Young Sup Kim
- Division of Drug Discovery Research, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea; and
| | - Chang-Duk Jun
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
| | - Sin-Hyeog Im
- Academy of Immunology and Microbiology, Institute for Basic Science, Pohang 790-784, Republic of Korea; Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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43
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Kyläniemi MK, Kaukonen R, Myllyviita J, Rasool O, Lahesmaa R. The regulation and role of c-FLIP in human Th cell differentiation. PLoS One 2014; 9:e102022. [PMID: 25019384 PMCID: PMC4096760 DOI: 10.1371/journal.pone.0102022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 06/14/2014] [Indexed: 12/19/2022] Open
Abstract
The early differentiation of T helper (Th) cells is a tightly controlled and finely balanced process, which involves several factors including cytokines, transcription factors and co-stimulatory molecules. Recent studies have shown that in addition to the regulation of apoptosis, caspase activity is also needed for Th cell proliferation and activation and it might play a role in Th cell differentiation. The isoforms of the cellular FLICE inhibitory protein (c-FLIP) are regulators of CASPASE-8 activity and the short isoform, c-FLIPS, has been shown to be up-regulated by IL-4, the Th2 driving cytokine. In this work, we have studied the expression and functional role of three c-FLIP isoforms during the early Th cell differentiation. Only two of the isoforms, c-FLIPS and c-FLIPL, were detected at the protein level although c-FLIPR was expressed at the mRNA level. The knockdown of c-FLIPL led to enhanced Th1 differentiation and elevated IL-4 production by Th2 cells, whereas the knockdown of c-FLIPS diminished GATA3 expression and IL-4 production by Th2 cells. In summary, our results provide new insight into the role of c-FLIP proteins in the early differentiation of human Th cells.
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Affiliation(s)
- Minna K. Kyläniemi
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
- National Doctoral Programme in Informational and Structural Biology, Åbo Akademi University, Turku, Finland
| | - Riina Kaukonen
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - Johanna Myllyviita
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - Omid Rasool
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - Riitta Lahesmaa
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
- * E-mail:
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44
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Alam MS, Gaida MM, Ogawa Y, Kolios AGA, Lasitschka F, Ashwell JD. Counter-regulation of T cell effector function by differentially activated p38. ACTA ACUST UNITED AC 2014; 211:1257-70. [PMID: 24863062 PMCID: PMC4042639 DOI: 10.1084/jem.20131917] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Unlike the MAP kinase (MAPK) cascade that phosphorylates p38 on the activation loop, T cell receptor (TCR) signaling results in phosphorylation on Tyr-323 (pY323, alternative pathway). Using mice expressing p38α and p38β with Y323F substitutions, we show that alternatively but not MAPK cascade-activated p38 up-regulates the transcription factors NFATc1 and IRF4, which are required for proliferation and cytokine production. Conversely, activation of p38 with UV or osmotic shock mitigated TCR-mediated activation by phosphorylation and cytoplasmic retention of NFATc1. Notably, UVB treatment of human psoriatic lesions reduced skin-infiltrating p38 pY323(+) T cell IRF4 and IL-17 production. Thus, distinct mechanisms of p38 activation converge on NFATc1 with opposing effects on T cell immunity, which may underlie the beneficial effect of phototherapy on psoriasis.
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Affiliation(s)
- Muhammad S Alam
- Laboratory of Immune Cell Biology, Center for Cancer Research; Dermatology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Matthias M Gaida
- Laboratory of Immune Cell Biology, Center for Cancer Research; Dermatology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Youichi Ogawa
- Laboratory of Immune Cell Biology, Center for Cancer Research; Dermatology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Antonios G A Kolios
- Department of Dermatology, University Hospital Zurich, 8091 Zurich, Switzerland Laboratory of Applied Immunobiology, University of Zurich, 8006 Zurich, Switzerland
| | - Felix Lasitschka
- Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Jonathan D Ashwell
- Laboratory of Immune Cell Biology, Center for Cancer Research; Dermatology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
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45
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Barboza BA, Fonseca BPF, Viola JPB. NFAT1 transcription factor in dendritic cells is required to modulate T helper cell differentiation. Immunobiology 2014; 219:704-12. [PMID: 24894426 DOI: 10.1016/j.imbio.2014.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 04/16/2014] [Accepted: 05/07/2014] [Indexed: 12/16/2022]
Abstract
The NFAT family of transcription factors plays a central role in the regulation of cytokine gene expression during the immune response. NFAT functions have been extensively explored in lymphocyte activation and differentiation, but the involvement of NFAT proteins in dendritic cells (DCs) is still not well known. Here, we investigated the role of the NFAT1 transcription factor in murine DCs. Initially, we demonstrated by western blot that the NFAT1 protein is present in splenic DCs and is rapidly activated upon calcium influx. We then used NFAT1-deficient mice (NFAT1-/-) to investigate whether NFAT1 influences the ability of DCs to induce Th differentiation. Our data demonstrated that NFAT1-/- DCs showed an increased capacity to differentiate CD4 T cells to the Th1 phenotype. CD4 cells that were primed in vitro with NFAT1-/- DCs had increased IFN-γ production. The same results were observed when the CD4 cells were primed in vivo through the sensitization of NFAT1-/- mice with ovalbumin. Furthermore, our results demonstrated that the cytokine IL-12 is one of the factors involved in this process because its production is increased in NFAT1-/- mice, and neutralizing anti-IL-12 antibodies almost completely eliminated the IFN-γ production. These results demonstrated that the NFAT1 transcription factor regulates specific functions in DCs that are involved in CD4 differentiation, suggesting that the inhibition of NFAT1 in DCs may be used as a therapy to modulate specific immune responses.
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Affiliation(s)
- Bianca A Barboza
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Bruna P F Fonseca
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - João P B Viola
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil.
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46
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Pontin is required for pre-TCR signaling at the β-selection checkpoint in T cell development. Biochem Biophys Res Commun 2014; 447:44-50. [PMID: 24680824 DOI: 10.1016/j.bbrc.2014.03.092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 03/19/2014] [Indexed: 11/24/2022]
Abstract
Pontin is a chromatin remodeling factor that possesses both ATPase and DNA helicase activities. Based on high expression in lymphoid tissues, we examined whether Pontin has a T cell-specific function. We generated Pontin(f/f);Lck-Cre mice, in which Pontin can be conditionally deleted in T cells and then explored T cell-specific function of Pontin in vivo. Here, we show that specific abrogation of Pontin expression in T cells almost completely blocked development of αβ T cells at the β-selection checkpoint by inducing cell apoptosis indicating that Pontin is essential for early T cell development. Pontin-deficient thymocytes show a comparable expression level of T cell receptor (TCR)β chain, but have enhanced activation of p53 and Notch signaling compared to wild-type thymocytes. Intriguingly, the developmental block of αβ T cells can be partially rescued by loss of p53. Together, our data demonstrate a novel role of Pontin as a crucial regulator in pre-TCR signaling during T cell development.
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47
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Spatiotemporal changes in NFATc4 expression of retinal ganglion cells after light-induced damage. J Mol Neurosci 2013; 53:69-77. [PMID: 24362677 DOI: 10.1007/s12031-013-0198-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 11/28/2013] [Indexed: 12/27/2022]
Abstract
Nuclear factor of activated T cells, cytoplasmic 4 (NFATc4) is one of the four members of the NFAT family, which were described first as essential components of T cells activation and lately as important regulators for the initiation and coordination of the immune response, including B cells and natural killer cells. Accumulating evidence has demonstrated that NFATc4 exerted a pro-apoptotic effect in the pathogenesis of various experimental central nervous system diseases by upregulating Fas ligand (FasL) levels. However, the function of NFATc4 in the retina is still with limited acquaintance. To investigate whether NFATc4 is involved in retinal neuron apoptosis, we performed a light-induced retinal damage model in adult rats. A significant upregulation of NFATc4 was detected in the retina after light-induced damage by using Western blotting and reverse transcriptase PCR (RT-PCR). Besides this, NFATc4 was observed to be localized mainly in the retinal ganglion cells (RGCs). In addition, the expression patterns of active caspase-3, active caspase-8, and FasL were parallel with that of NFATc4. We also found the co-localization of NFATc4 with active caspase-3 and FasL in RGCs after light exposure. Collectively, we hypothesized that NFATc4 might participate in RGCs apoptosis by upregulating FasL levels.
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48
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Zeng WP. 'All things considered': transcriptional regulation of T helper type 2 cell differentiation from precursor to effector activation. Immunology 2013; 140:31-8. [PMID: 23668241 DOI: 10.1111/imm.12121] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 02/02/2023] Open
Abstract
T helper type 2 (Th2) cells are critical to host defence against helminth infection and the pathogenesis of allergic diseases. The differentiation of Th2 cells from naive CD4 T cells is controlled by intricate transcriptional mechanisms. At the precursor stage of naive CD4 T cells, transcriptional mechanisms maintain the potential and in the meantime prevent spontaneous differentiation to Th2 fate. In addition, intrachromosomal interactions important for co-ordinated expression of Th2 cytokines pre-exist in naive CD4 T cells. Upon T-cell receptor (TCR) engagement, naive CD4 T cells are induced by polarizing signals of the interleukin-4/Stat6 and Jagged/Notch pathways to up-regulate the expression of GATA-3. Once up-regulated, GATA-3 drives Th2 and suppresses Th1 differentiation in a cell autonomous fashion. In this stage of differentiation, the Th2 cytokine locus, as well as the interferon-γ locus, undergoes chromatin remodelling and epigenetic modifications that contribute to the somatic memory of Th2 cytokine gene expression pattern. Once differentiated, Th2 effector cells promptly produce Th2 cytokines upon TCR stimulation, which is regulated by concerted actions of GATA-3, TCR signalling, enhancers and the Th2 locus control region. This review provides a detailed account of the transcriptional regulatory events at these different stages of Th2 differentiation.
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Affiliation(s)
- Wei-ping Zeng
- Department of Biochemistry and Microbiology, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, USA.
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49
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NFAT5 induction by the pre-T-cell receptor serves as a selective survival signal in T-lymphocyte development. Proc Natl Acad Sci U S A 2013; 110:16091-6. [PMID: 24043824 DOI: 10.1073/pnas.1215934110] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The Rel-like transcription factors nuclear factor kappa B (NF-κB) and the calcineurin-dependent nuclear factor of activated T cells (NFATc) control specific points of thymocyte maturation. Thymocytes also express a distinct member of the Rel family, the calcineurin-independent, osmostress response regulator NFAT5. Here we show that IKKβ regulates the expression of NFAT5 in thymocytes, which in turn contributes to the survival of T-cell receptor αβ thymocytes and the transition from the β-selection checkpoint to the double-positive stage in an osmostress-independent manner. NFAT5-deficient thymocytes had normal expression and proximal signaling of the pre-T-cell receptor but exhibited a partial defect in β-chain allelic exclusion and increased apoptosis. Further analysis showed that NFAT5 regulated the expression of the prosurvival factors A1 and Bcl2 and attenuated the proapoptotic p53/Noxa axis. These findings position NFAT5 as a target of the IKKβ/NF-κB pathway in thymocytes and as a downstream effector of the prosurvival role of the pre-T-cell receptor.
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50
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Yamane H, Paul WE. Early signaling events that underlie fate decisions of naive CD4(+) T cells toward distinct T-helper cell subsets. Immunol Rev 2013; 252:12-23. [PMID: 23405892 DOI: 10.1111/imr.12032] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
CD4(+) T-helper (Th) cells are a major cell population that play an important role in governing acquired immune responses to a variety of foreign antigens as well as inducing some types of autoimmune diseases. There are at least four distinct Th cell subsets (Th1, Th2, Th17, and inducible T-regulatory cells), each of which has specialized functions to control immune responses. Each of these cell types emerge from naive CD4(+) T cells after encounter with foreign antigens presented by dendritic cells (DCs). Each Th cell subset expresses a unique set of transcription factors and produces hallmark cytokines. Both T-cell receptor (TCR)-mediated stimulation and the cytokine environment created by activated CD4(+) T cells themselves, by 'partner' DCs, and/or other cell types during the course of differentiation, play an important role in the fate decisions toward distinct Th subsets. Here, we review how TCR-mediated signals in collaboration with the cytokine environment influence the fate decisions of naive CD4(+) T cells toward distinct Th subsets at the early stages of activation. We also discuss the roles of TCR-proximal signaling intermediates and of the Notch pathway in regulating the differentiation to distinct Th phenotypes.
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Affiliation(s)
- Hidehiro Yamane
- Cytokine Biology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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