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Wang W, Xiang T, Yang Y, Wang Z, Xie J. E3 ubiquitin ligases STUB1/CHIP contributes to the Th17/Treg imbalance via the ubiquitination of aryl hydrocarbon receptor in rheumatoid arthritis. Clin Exp Immunol 2022; 209:280-290. [PMID: 35943876 PMCID: PMC9521662 DOI: 10.1093/cei/uxac072] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/30/2022] [Accepted: 08/07/2022] [Indexed: 01/25/2023] Open
Abstract
STIP1-homologous U-Box containing protein 1 (STUB1) is involved in the development of immune pathologies and the regulation of T cell. However, the potential role of STUB1 in the pathogenesis of rheumatoid arthritis (RA), especially in the regulation of T cells, remains elusive. Here we show that STUB1 promotes the imbalance of Th17/Treg cells through non-degradative ubiquitination of aryl hydrocarbon receptor (AHR). Using Western blot and flow cytometry analysis, we observe that the level of STUB1 was increased in RA patients compared with healthy controls. In particular, the expression of STUB1 protein was different in Th17 cells and Treg cells of RA patients. We also demonstrated that STUB1 facilitates Th17/Treg imbalance by up- or downregulating the expression of STUB1. In a subsequent series of in vitro experiments, we revealed that STUB1 promoted the imbalance of Th17 and Treg cells through non-degradative ubiquitination of AHR. Both knockdown of the AHR expression by siRNA and assays of CYP1A1 enzymatic activity by ethoxyresorufin-O-deethylase (EROD) supported this conclusion. Furthermore, we explored the ubiquitination sites of AHR responsible for STUB1-mediated ubiquitination and revealed that STUB1 promotes ubiquitination of AHR via K63 chains. Together, STUB1 may induce the imbalance of Th17/Treg cells via ubiquitination of AHR and serve as a potential therapeutic target for RA.
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Affiliation(s)
- Wen Wang
- Department of Rheumatology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ting Xiang
- Department of Rheumatology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yachen Yang
- Department of Rheumatology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zitao Wang
- Department of Rheumatology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jianmin Xie
- Department of Rheumatology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Fu J, Zheng H, Xue Y, Jin R, Yang G, Chen Z, Yuan G. WWP2 Promotes Odontoblastic Differentiation by Monoubiquitinating KLF5. J Dent Res 2020; 100:432-439. [PMID: 33164644 DOI: 10.1177/0022034520970866] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
WW domain-containing E3 Ub-protein ligase 2 (WWP2) belongs to the homologous to E6AP C-terminus (HECT) E3 ligase family. It has been explored to regulate osteogenic differentiation, chondrogenesis, and palatogenesis. Odontoblasts are terminally differentiated mesenchymal cells, which contribute to dentin formation in tooth development. However, it remained unknown whether WWP2 participated in odontoblast differentiation. In this study, WWP2 was found to be expressed in mouse dental papilla cells (mDPCs), odontoblasts, and odontoblastic-induced mDPCs by immunohistochemistry and Western blotting. Besides, WWP2 expression was decreased in the cytoplasm but increased in the nuclei of differentiation-induced mDPCs. When Wwp2 was knocked down, the elevated expression of odontoblast marker genes (Dmp1 and Dspp) in mDPCs induced by differentiation medium was suppressed. Meanwhile, a decrease of alkaline phosphatase (ALP) activity was observed by ALP staining, and reduced formation of mineralized matrix nodules was demonstrated by Alizarin Red S staining. Overexpression of WWP2 presented opposite results to knockdown experiments, suggesting that WWP2 promoted odontoblastic differentiation of mDPCs. Further investigation found that WWP2 was coexpressed and interacted with KLF5 in the nuclei, leading to ubiquitination of KLF5. The PPPSY (PY2) motif of KLF5 was essential for its physical binding with WWP2. Also, cysteine 838 (Cys838) of WWP2 was the active site for ubiquitination of KLF5, which did not lead to proteolysis of KLF5. Then, KLF5 was confirmed to be monoubiquitinated and transactivated by WWP2, which promoted the expression of KLF5 downstream genes Dmp1 and Dspp. Deletion of the PY2 motif of KLF5 or mutation of Cys838 of WWP2 reduced the upregulation of Dmp1 and Dspp. Besides, lysine (K) residues K31, K52, K83, and K265 of KLF5 were verified to be crucial to WWP2-mediated KLF5 transactivation. Taken together, WWP2 promoted odontoblastic differentiation by monoubiquitinating KLF5.
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Affiliation(s)
- J Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - H Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - Y Xue
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - R Jin
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - G Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - Z Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - G Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
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Suehiro KI, Suto A, Suga K, Furuya H, Iwata A, Iwamoto T, Tanaka S, Kageyama T, Suzuki K, Hirose K, Lefebvre V, Nakajima H. Sox12 enhances Fbw7-mediated ubiquitination and degradation of GATA3 in Th2 cells. Cell Mol Immunol 2020; 18:1729-1738. [PMID: 32152552 DOI: 10.1038/s41423-020-0384-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 02/12/2020] [Indexed: 02/06/2023] Open
Abstract
Allergic asthma that is caused by inhalation of house dust mites (HDMs) is mainly mediated by Th2 cells. Recently, the roles of Sox (SRY-related high-mobility-group (HMG)-box) family members in various immune responses have been investigated. However, the roles of Sox12, a member of the SoxC group, in Th2 cell differentiation and allergic airway inflammation, remain unknown. We showed that Sox12 mRNA was significantly increased during Th2 cell differentiation. In vivo, HDM-induced eosinophil infiltration into the lung and Th2 cell differentiation were exacerbated in Sox12-/- mice compared with those in control Sox12+/- mice. In vitro, Sox12-/- CD4+ T cells that were cultured under Th2 conditions had increased production of Th2 cytokines and GATA3 protein compared with those of control Sox12+/- CD4+ T cells. Importantly, forced expression of Sox12 decreased the protein levels of GATA3 in CD4+ T cells under Th2 conditions without affecting mRNA expression. Furthermore, Sox12 induced degradation of GATA3 through the proteasome pathway in CD4+ T cells. Consistently, Sox12 enhanced ubiquitination of GATA3, which was mediated by the E3 ligase Fbw7. Finally, we found that Fbw7 knockdown partly abrogated Sox12-mediated GATA3 suppression in CD4+ T cells. Taken together, these results suggest that Sox12 suppresses Th2 cell differentiation by accelerating Fbw7-mediated GATA3 degradation, and attenuates HDM-induced allergic inflammation.
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Affiliation(s)
- Ken-Ichi Suehiro
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Akira Suto
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan. .,Institute for Global Prominent Research, Chiba University, Chiba, Japan.
| | - Kensuke Suga
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Hiroki Furuya
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Arifumi Iwata
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Taro Iwamoto
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Shigeru Tanaka
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Takahiro Kageyama
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Kotaro Suzuki
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Koichi Hirose
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan
| | - Véronique Lefebvre
- Department of Surgery/Division of Orthopedic Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Hiroshi Nakajima
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba, Japan.
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陈 赛, 李 智, 周 利, 张 云. [ Cbl- b gene silencing enhances H9 T lymphocyte-mediated killing of human laryngeal squamous cancer Hep-2 cells]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:554-560. [PMID: 31140419 PMCID: PMC6743940 DOI: 10.12122/j.issn.1673-4254.2019.05.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of sputum ubiquitin ligase (Cbl-b) gene known-down on the cytotoxicity of H9 T lymphocytes against human laryngeal squamous cancer Hep-2 cells and explore the underlying mechanism. METHODS CD4+ T lymphocytes isolated from 12 patients with laryngeal squamous carcinoma and 12 healthy individuals were examined for Cbl-b mRNA expressions using RT-PCR. H9 T lymphocytes cultured in 96-well plates were transfected with Cbl-b siRNA via liposomes followed by treatment with an anti-IL-2 monoclonal antibody, with H9 T lymphocytes transfected with a scrambled sequence as the negative control. The expressions of Cbl-b mRNA and protein in the cells were detected using real-time fluorescent quantitative PCR and Western blotting, respectively. The killing effect of the treated T lymphocytes against Hep-2 cells was assessed using the cell counting kit (CCK-8). The positive expression rates of CD69 and CD25 on the surface of H9 T lymphocytes were determined using flow cytometry, and the levels of interleukin-2 (IL-2) and interferon-gamma (INF-γ) in the culture supernatants of H9 T lymphocytes were detected with ELISA. RESULTS The CD4+ T lymphocytes from patients with laryngeal squamous carcinoma showed significantly increased Cbl-b mRNA level compared with those from healthy individuals (P < 0.05). Transfection of H9 T lymphocytes with Cbl-b siRNA significantly reduced the expression levels of Cbl-b mRNA and protein (P < 0.05), which were not significantly affected by subsequent treatment of the cells with the anti-IL-2 antibody (P>0.05). At different target-effector ratios, the Cbl-b siRNA-transfected cells showed significantly higher Hep-2 cell killing rates and higher positivity rates of CD69 and CD25 expressions than the blank and negative control cells and the cells with both Cbl-b siRNA transfection and anti-IL-2 treatment (P < 0.05). Cbl-b silencing in H9 T lymphocytes resulted in significantly increased levels of IL-2 and INF-γ in the supernatant as compared with those in the blank and negative control groups (P < 0.05). CONCLUSIONS Cbl-b gene silencing effectively enhances the killing effect of H9 T lymphocytes against Hep-2 cells in vitro probably as the result of enhanced IL-2 secretion and T lymphocyte activation.
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Affiliation(s)
- 赛明 陈
- 海南医学院第一附属医院耳鼻咽喉头颈外科Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Hainan Medical College
| | - 智群 李
- 海南医学院第一附属医院耳鼻咽喉头颈外科Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Hainan Medical College
| | - 利民 周
- 海南医学院科学实验中心,海南 海口 570102Scientific Experimental Center of Hainan Medical College, Haikou 570102, China
| | - 云霞 张
- 海南医学院科学实验中心,海南 海口 570102Scientific Experimental Center of Hainan Medical College, Haikou 570102, China
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Chen S, Yun F, Yao Y, Cao M, Zhang Y, Wang J, Song X, Qian Y. USP38 critically promotes asthmatic pathogenesis by stabilizing JunB protein. J Exp Med 2018; 215:2850-2867. [PMID: 30224386 PMCID: PMC6219735 DOI: 10.1084/jem.20172026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 06/20/2018] [Accepted: 08/23/2018] [Indexed: 12/24/2022] Open
Abstract
Although usp38 has recently been reported to be in a chromosome locus associated with human asthma in a GWAS study, its potential pathological role remains unknown. Chen et al. now demonstrate that usp38 is essential for asthmatic pathogenesis. USP38 is induced by TCR signaling and in turn promotes JunB stabilization to specifically regulate Th2 cell differentiation. Th2 immune response is critical for allergic asthma pathogenesis. Molecular mechanisms for regulating Th2 immunity are still not well understood. Here we report that the ubiquitin-specific protease USP38 is crucial for Th2-mediated allergic asthma. TCR stimulation up-regulated the USP38 level, and USP38 in turn mediated the protein stabilization of JunB, a transcription factor specific for Th2 development. Consequently, USP38 was specifically required for TCR-induced production of Th2 cytokines and Th2 development both in vitro and in vivo, and USP38-deficient mice were resistant to asthma pathogenesis induced by OVA or HDM. Mechanistically, USP38 directly associated with JunB, deubiquitinated Lys-48–linked poly-ubiquitination of JunB, and consequently blocked TCR-induced JunB turnover. USP38 represents the first identified deubiquitinase specifically for Th2 immunity and the associated asthma.
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Affiliation(s)
- Siyuan Chen
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Fenglin Yun
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yikun Yao
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Mengtao Cao
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yifan Zhang
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jingjing Wang
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xinyang Song
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Youcun Qian
- Chinese Academy of Sciences (CAS) Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China .,School of Life Science and Technology, ShanghaiTech University, Shanghai, China
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Balato A, Scala E, Balato N, Caiazzo G, Di Caprio R, Monfrecola G, Raimondo A, Lembo S, Ayala F. Biologics that inhibit the Th17 pathway and related cytokines to treat inflammatory disorders. Expert Opin Biol Ther 2017; 17:1363-1374. [PMID: 28791896 DOI: 10.1080/14712598.2017.1363884] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Advances in the understanding of TNF-α and IL-17 synergistic functions have recently led to the concept that patients who do not respond or who respond inadequately to TNF-α inhibitors may have IL-17-driven diseases, opening up the way for a new class of therapeutic development: Th17-inhibitors. Areas covered: In this review, the authors discuss the central role that the IL-23/Th17 axis plays in the pathogenesis of several inflammatory diseases, such as psoriasis, highlighting its position as a relevant therapeutic target. In particular, the authors start by giving a brief historical excursus on biologic agent development up until the success of TNF-α inhibitors, and continue with an overview of IL12/23 pathway inhibition. Next, they describe Th17 cell biology, focusing on the role of IL-17 in host defense and in human immune-inflammatory diseases, discussing the use and side effects of IL-17 inhibitors. Expert opinion: The IL-23/Th17 signaling pathway plays a central role in the pathogenesis of several inflammatory diseases, such as psoriasis. Recent data has demonstrated that biologics neutralizing IL-17 (ixekizumab, secukinumab) or its receptor (brodalumab) are highly effective with a positive safety profile in treating moderate to severe psoriasis, offering new treatment possibilities, especially for patients who do not respond adequately to anti-TNF-α therapies.
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Affiliation(s)
- Anna Balato
- a Department of Advanced Biomedical Sciences , University of Naples Federico II , Naples , Italy
| | - Emanuele Scala
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Nicola Balato
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Giuseppina Caiazzo
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Roberta Di Caprio
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Giuseppe Monfrecola
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Annunziata Raimondo
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Serena Lembo
- c Department of Medicine, Surgery and Dentistry , "Scuola Medica Salernitana" University of Salerno , Salerno , Italy
| | - Fabio Ayala
- b Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
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