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Zhou M, Li Y, Qian J, Dong X, Guo Y, Yin L, Liu C, Hao K, Hu Q. P2Y 14R activation facilitates liver regeneration via CREB/DNMT3b/Dact-2/ β-Catenin signals in acute liver failure. Acta Pharm Sin B 2025; 15:919-933. [PMID: 40177539 PMCID: PMC11959937 DOI: 10.1016/j.apsb.2025.01.004] [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: 06/25/2024] [Revised: 09/29/2024] [Accepted: 11/06/2024] [Indexed: 04/05/2025] Open
Abstract
Acute liver failure (ALF) is lack of broadly approved therapeutic strategy except liver transplantation. As a glycogen metabolic intermediate, UDP-glucose (UDP-G) has been considered to accelerate liver repairment. Nevertheless, the role of UDP-G and its receptor P2Y purinoceptor 14 (P2Y14R) in ALF remains unknown. The present study aims to investigate the role and underlying mechanisms of UDP-G/P2Y14R axis in ALF. In this study, hepatic P2Y14R is significantly increased in TAA-induced and partial hepatectomy-induced ALF, while knockout of whole-body P2Y14R aggravates liver failure, manifested by inhibiting β-Catenin-mediated liver regeneration. Consistently, P2Y14R deficiency exhibits impaired liver regeneration in mice suffer partial hepatectomy. Importantly, only hepatocellular specific deletion of P2Y14R (P2Y14R flox/flox Alb cre/+ ) mice shows a similar phenomenon, rather than stellate cell specific deletion of P2Y14R (P2Y14R flox/flox Lrat cre/+ ) mice. Mechanistically, P2Y14R induction regulates methylation of Dact-2 through CREB/DNMT3b signals in hepatocytes, subsequently inhibiting the expression of Dact-2 which is a stabilizer of β-Catenin degradation complex, leading to the activation of β-Catenin -mediated liver regeneration. Interestingly, the administration of exogenous UDP-G can accelerate liver regeneration and liver function recovery after partial hepatectomy in hepatocellular carcinoma mice. Together, the findings propose an unrecognized role of P2Y14R in ALF and provide an effective adjuvant strategy for treatment of ALF.
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Affiliation(s)
- Mengze Zhou
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Yehong Li
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Jialong Qian
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xinli Dong
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yanshuo Guo
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Li Yin
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Chunxiao Liu
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Kun Hao
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Qinghua Hu
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
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2
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Abstract
Genome-wide association analyses suggest that HLA genes including HLA-DRB*0301, HLA-DRB*0401, and HLA-B*3501 as well as non-HLA genes including CD28/CTLA4/ICOS and SYNPR increased AIH susceptibility. The destruction of hepatocytes is the result of the imbalance between proinflammatory cells and immunosuppressive cells, especially the imbalance between Tregs and Th17 cells. The microbiome in patients with AIH is decreased in diversity with a specific decline in Bifidobacterium and enrichment in Veillonella and Faecalibacterium. Recent evidence has demonstrated the pathogenic role of E. gallinarum and L.reuteri in inducing autoimmunity in the liver.
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Affiliation(s)
- Zhou Yuming
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China
| | - Tang Ruqi
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China
| | - Merrill Eric Gershwin
- Division of Rheumatology, Department of Medicine, Allergy and Clinical Immunology, University of California at Davis, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, USA.
| | - Ma Xiong
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China; Institute of Aging & Tissue Regeneration, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Zhao J, Yi Z, Deng G, Li Y, Li J, Qin M, Wu C, Luo P, Ma S, Gao L. STING modulates iron metabolism to promote liver injury and inflammation in acute immune hepatitis. Free Radic Biol Med 2024; 210:367-377. [PMID: 38052276 DOI: 10.1016/j.freeradbiomed.2023.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/16/2023] [Accepted: 11/29/2023] [Indexed: 12/07/2023]
Abstract
The pathogenesis of Autoimmune Hepatitis (AIH) is closely associated with perturbations in iron ion metabolism, during which Stimulator of Interferon Genes (STING) plays an important role. However, the precise regulatory mechanism remains elusive. In this study, we investigated the relationship between iron dysregulation and STING activation in Concanavalin A (ConA)-induced AIH liver injury. STING knockout (STING-/-) mice and AAV (Adeno-Associated virus)-Sting1-RNAi-treated mice were involved and subjected in AIH. We observed that increased iron dysregulation was linked with STING activation, but this effect was effectively reversed by the administration of iron chelating agent Desferoxamine (DFO) and the antioxidant Ferrostatin-1 (Fer-1). Notably, the iron transport protein Transferrin (TF) and Transferrin Receptor (TfR) exhibited significant accumulation in AIH along with upregulated expression of ferritin protein. Additionally, the deficiency of STING reduced hepatic iron accumulation, mitigated oxidative stress, and attenuated macrophage activation during ConA treatment. Furthermore, liver-specific knockdown of STING using AAV-Sting1-RNAi significantly ameliorated liver iron dysregulation and oxidative stress response induced by Kupffer cells (KCs). KC-derived STING exacerbates liver damage severity in AIH through promoting disturbances in hepatic iron ion metabolism as well as oxidative stress response. These findings provide valuable insights into the pathogenesis of AIH and may pave the way for potential therapeutic strategies targeting STING and iron metabolism in the future.
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Affiliation(s)
- Jiamin Zhao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Zhiyong Yi
- Department of Gastrointestinal Surgery, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Guanghui Deng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Yunjia Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Junjie Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Mengchen Qin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Chaofeng Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Piao Luo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Shuoyi Ma
- Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China.
| | - Lei Gao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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4
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Yi Q, Yang J, Wu Y, Wang Y, Cao Q, Wen W. Immune microenvironment changes of liver cirrhosis: emerging role of mesenchymal stromal cells. Front Immunol 2023; 14:1204524. [PMID: 37539053 PMCID: PMC10395751 DOI: 10.3389/fimmu.2023.1204524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/21/2023] [Indexed: 08/05/2023] Open
Abstract
Cirrhosis is a progressive and diffuse liver disease characterized by liver tissue fibrosis and impaired liver function. This condition is brought about by several factors, including chronic hepatitis, hepatic steatosis, alcohol abuse, and other immunological injuries. The pathogenesis of liver cirrhosis is a complex process that involves the interaction of various immune cells and cytokines, which work together to create the hepatic homeostasis imbalance in the liver. Some studies have indicated that alterations in the immune microenvironment of liver cirrhosis are closely linked to the development and prognosis of the disease. The noteworthy function of mesenchymal stem cells and their paracrine secretion lies in their ability to promote the production of cytokines, which in turn enhance the self-repairing capabilities of tissues. The objective of this review is to provide a summary of the alterations in liver homeostasis and to discuss intercellular communication within the organ. Recent research on MSCs is yielding a blueprint for cell typing and biomarker immunoregulation. Hopefully, as MSCs researches continue to progress, novel therapeutic approaches will emerge to address cirrhosis.
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Affiliation(s)
- Qiuyun Yi
- National Center for Liver Cancer, Third Affiliated Hospital of Naval Medical University, Shanghai, China
- International Cooperation Laboratory on Signal Transduction, Third Affiliated Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
| | - Jinxian Yang
- National Center for Liver Cancer, Third Affiliated Hospital of Naval Medical University, Shanghai, China
- International Cooperation Laboratory on Signal Transduction, Third Affiliated Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
| | - Ying Wu
- Department of Breast and Thyroid Surgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Ying Wang
- Department of Laboratory Diagnosis, Third Affiliated Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
| | - Qiqi Cao
- National Center for Liver Cancer, Third Affiliated Hospital of Naval Medical University, Shanghai, China
- International Cooperation Laboratory on Signal Transduction, Third Affiliated Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
| | - Wen Wen
- National Center for Liver Cancer, Third Affiliated Hospital of Naval Medical University, Shanghai, China
- Department of Laboratory Diagnosis, Third Affiliated Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
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Sisto M, Lisi S. Towards a Unified Approach in Autoimmune Fibrotic Signalling Pathways. Int J Mol Sci 2023; 24:ijms24109060. [PMID: 37240405 DOI: 10.3390/ijms24109060] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/12/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Autoimmunity is a chronic process resulting in inflammation, tissue damage, and subsequent tissue remodelling and organ fibrosis. In contrast to acute inflammatory reactions, pathogenic fibrosis typically results from the chronic inflammatory reactions characterizing autoimmune diseases. Despite having obvious aetiological and clinical outcome distinctions, most chronic autoimmune fibrotic disorders have in common a persistent and sustained production of growth factors, proteolytic enzymes, angiogenic factors, and fibrogenic cytokines, which together stimulate the deposition of connective tissue elements or epithelial to mesenchymal transformation (EMT) that progressively remodels and destroys normal tissue architecture leading to organ failure. Despite its enormous impact on human health, there are currently no approved treatments that directly target the molecular mechanisms of fibrosis. The primary goal of this review is to discuss the most recent identified mechanisms of chronic autoimmune diseases characterized by a fibrotic evolution with the aim to identify possible common and unique mechanisms of fibrogenesis that might be exploited in the development of effective antifibrotic therapies.
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Affiliation(s)
- Margherita Sisto
- Department of Translational Biomedicine and Neuroscience (DiBraiN), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Piazza Giulio Cesare 1, I-70124 Bari, Italy
| | - Sabrina Lisi
- Department of Translational Biomedicine and Neuroscience (DiBraiN), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Piazza Giulio Cesare 1, I-70124 Bari, Italy
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6
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Zhang Z, Li Y, Chen N, Li H, Chen S, Cui X, Shao H, Wei L, Ma J, Zhang S, Li X, Zhang X. Pertussis toxin-induced inhibition of Wnt/β-catenin signaling in dendritic cells promotes an autoimmune response in experimental autoimmune uveitis. J Neuroinflammation 2023; 20:24. [PMID: 36739434 PMCID: PMC9898909 DOI: 10.1186/s12974-023-02707-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/27/2023] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Previous reports have indicated that disrupting the Wnt/β-catenin pathway in dendritic cells (DCs) may affect the progression of autoimmune inflammation; however, the factors and timing that regulate Wnt/β-catenin signaling have not been clearly understood. METHODS Experimental autoimmune uveitis (EAU) mice and Vogt-Koyanagi-Harada disease (VKH) patient samples were used to detect the expression of Wnt/β-catenin pathway genes. Western blot, real-time PCR, flow cytometry, and ELISA were performed to examine the expression of components of the Wnt/β-catenin pathway and inflammatory factors. DC-specific β-catenin knockout mice and 6-bromoindirubin-3'-oxime (BIO) administered mice were used to observe the effect of disrupting the Wnt pathway on EAU pathogenesis. RESULTS Wnt/β-catenin signaling was inhibited in DCs during the induction phase of EAU. The inhibition was mediated by pertussis toxin (PTX), which promoted DC maturation, in turn promoting pathogenic T cell proliferation and differentiation. In vivo experiments confirmed that deleting β-catenin in DCs enhanced EAU severity, and pre-injection of PTX advanced EAU onset. Administration of a Wnt activator (BIO) limited the effects of PTX, in turn ameliorating EAU. CONCLUSIONS Our results demonstrate that PTX plays a key role as a virulence factor in initiating autoimmune inflammation via DCs by inhibiting Wnt/β-catenin signaling in EAU, and highlight the potential mechanism by which infection can trigger apparent autoimmunity.
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Affiliation(s)
- Zhihui Zhang
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Yongtao Li
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Nu Chen
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Huan Li
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Shuang Chen
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Xuexue Cui
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Hui Shao
- grid.266623.50000 0001 2113 1622Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, School of Medicine, Louisville, KY USA
| | - Lai Wei
- grid.12981.330000 0001 2360 039XState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Jianxing Ma
- grid.241167.70000 0001 2185 3318Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC USA
| | - Song Zhang
- grid.216938.70000 0000 9878 7032Institute for Immunology and College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaorong Li
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Xiaomin Zhang
- grid.412729.b0000 0004 1798 646XTianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
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7
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Shen M, Fan X, Shen Y, Wang X, Wu R, Wang Y, Huang C, Zhao S, Zheng Y, Men R, Luo X, Yang L. Myeloid-derived suppressor cells ameliorate liver mitochondrial damage to protect against autoimmune hepatitis by releasing small extracellular vesicles. Int Immunopharmacol 2023; 114:109540. [PMID: 36516541 DOI: 10.1016/j.intimp.2022.109540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is an inflammatory liver disease that is associated with impaired self-tolerance. Myeloid-derived supprfessor cells (MDSCs) have been considered to exert counterregulatory effects on AIH. However, the specific mechanism underlying these effects is unclear. Herein, we investigated the efficacy and safety of MDSCs in protecting against AIH and explored the underlying mechanism. METHODS Circulating and liver MDSC expression levels in 71 AIH patients and 47 healthy control (HC) individuals were detected by flow cytometry and immunohistochemistry. The adoptive transfer of induced bone marrow-derived MDSCs (BM MDSCs) to AIH mice was used to explore the function of MDSCs. Hepatic injury and mitochondrial damage were evaluated by transaminase levels, histopathology, immunohistochemistry, transmission electron microscopy and western blotting. MDSCs were pretreated with the small extracellular vesicle (sEV) generation inhibitor GW4869 to explore the mechanism. Importantly, sEVs derived from MDSCs and MDSCs-GW4869 were injected into model mice to monitor mitochondrial function and biogenesis. RESULTS Circulating and liver MDSCs were expanded in AIH patients and mouse model. Furthermore, the follow-up data of AIH patients showed that immunosuppressive therapy further promoted the expansion of MDSCs. More importantly, the adoptive transfer of BM MDSCs to AIH mice effectively ameliorated liver injury and regulated the imbalance of the immune microenvironment. Additionally, BM MDSCs reduced liver mitochondrial damage and improved mitochondrial biogenesis. Mechanistically, sEVs derived from BM MDSCs showed the same biological effects as cells, and blocking sEV production weakened the function of BM MDSCs. Finally, multiple long-term administrations of BM MDSCs were proven to be safe in general. CONCLUSION In conclusion, MDSCs ameliorate liver mitochondrial damage to protect against autoimmune hepatitis by releasing small extracellular vesicles.
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Affiliation(s)
- Mengyi Shen
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiaoli Fan
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yi Shen
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiaoze Wang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ruiqi Wu
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yi Wang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Chen Huang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shenglan Zhao
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yanyi Zheng
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ruoting Men
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xuefeng Luo
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Li Yang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-related Molecular Network, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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Khoramjoo SM, Kazemifard N, Baradaran Ghavami S, Farmani M, Shahrokh S, Asadzadeh Aghdaei H, Sherkat G, Zali MR. Overview of Three Proliferation Pathways (Wnt, Notch, and Hippo) in Intestine and Immune System and Their Role in Inflammatory Bowel Diseases (IBDs). Front Med (Lausanne) 2022; 9:865131. [PMID: 35677821 PMCID: PMC9170180 DOI: 10.3389/fmed.2022.865131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/14/2022] [Indexed: 12/15/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a disorder, which involves the gastrointestinal (GI) tract consisting Crohn's disease (CD) and ulcerative colitis (UC). The etiology of this disease is not yet clear and, hence, there are numerous medications and treatments for patients with IBD, although a definite and permanent treatment is still missing. Therefore, finding novel therapeutic approaches are vital for curing patients with IBD. In the GI tract, there are various lineages of cells with different roles that their existence is necessary for the barrier function of intestinal epithelial cells (IECs). Therefore, signaling pathways, which manage the hemostasis of cell lineages in intestine, such as Wnt, Notch, and Hippo, could have crucial roles in regulation of barrier function in the intestine. Additionally, these signaling pathways function as a governor of cell growth, tissue homeostasis, and organ size. In patients with IBD, recent studies have revealed that these signaling pathways are dysregulated that it could result in depletion or excess of a cell lineage in the intestine. Moreover, dysregulation of these signaling pathways in different cell lineages of the immune system could lead to dysregulation of the immune system's responses in IBD. In this article, we summarized the components and signaling of Wnt, Notch, and Hippo pathways and their role in the intestine and immune system. Furthermore, we reviewed latest scientific literature on the crosstalk among these three signaling pathways in IBD. An overview of these three signaling pathways and their interactions in IBD could provide a novel insight for prospective study directions into finding efficient medications or treatments.
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Affiliation(s)
- Seyed Mobin Khoramjoo
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nesa Kazemifard
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shaghayegh Baradaran Ghavami
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Shaghayegh Baradaran Ghavami
| | - Maryam Farmani
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shabnam Shahrokh
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghazal Sherkat
- Faculty of Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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9
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Liu Y, Hao H, Hou T. Concanavalin A-induced autoimmune hepatitis model in mice: Mechanisms and future outlook. Open Life Sci 2022; 17:91-101. [PMID: 35291566 PMCID: PMC8886606 DOI: 10.1515/biol-2022-0013] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/29/2021] [Accepted: 01/03/2022] [Indexed: 12/11/2022] Open
Abstract
Abstract
The concanavalin A (Con A)-induced liver injury mouse model is a typical animal model focusing on T cell-dependent hepatic damage in the field of autoimmune hepatitis (AIH). However, the underlying mechanism of hepatic dysfunction due to cell activation or signaling pathways triggered by Con A has not been fully clarified. Therefore, the controversy on this model remains in the academic community. In this article, we first summarized the merit and demerit of this contentious model from the perspectives of cell dysfunction, microcirculation disturbance, involved signaling pathways, as well as the properties of Con A. Then, we summed up the scientific implications of the model in elucidating the pathogenesis of AIH, and the shortcomings of this model were also summarized to elucidate the pathogenesis and application prospect of this classical liver injury mouse model in the study of AIH.
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Affiliation(s)
- Yang Liu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Huiqin Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Tiezheng Hou
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
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10
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Wnt/β-catenin signalling: function, biological mechanisms, and therapeutic opportunities. Signal Transduct Target Ther 2022; 7:3. [PMID: 34980884 PMCID: PMC8724284 DOI: 10.1038/s41392-021-00762-6] [Citation(s) in RCA: 1120] [Impact Index Per Article: 373.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/28/2021] [Accepted: 07/07/2021] [Indexed: 02/06/2023] Open
Abstract
The Wnt/β-catenin pathway comprises a family of proteins that play critical roles in embryonic development and adult tissue homeostasis. The deregulation of Wnt/β-catenin signalling often leads to various serious diseases, including cancer and non-cancer diseases. Although many articles have reviewed Wnt/β-catenin from various aspects, a systematic review encompassing the origin, composition, function, and clinical trials of the Wnt/β-catenin signalling pathway in tumour and diseases is lacking. In this article, we comprehensively review the Wnt/β-catenin pathway from the above five aspects in combination with the latest research. Finally, we propose challenges and opportunities for the development of small-molecular compounds targeting the Wnt signalling pathway in disease treatment.
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11
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Dos Santos IP, de Assunção MT, Mauch RM, Sandy NS, Nolasco da Silva MT, Bellomo-Brandão MA, Riccetto AGL. Patients with treated autoimmune hepatitis and persistent suppression of plasmacytoid dendritic cells: A different point of view. Int J Immunopathol Pharmacol 2022; 36:20587384211068667. [PMID: 35404689 PMCID: PMC9006358 DOI: 10.1177/20587384211068667] [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] [Indexed: 11/17/2022] Open
Abstract
Objectives: Plasmacytoid dendritic cells (pDCs) have been shown to have a role in autoimmune diseases, but their role in Autoimmune Hepatitis (AIH) is not completely clear. In the present study, we assessed the frequency of pDCs in peripheral blood of AIH patients under long-term standard immunosuppressive therapy. Methods: This cross-sectional analysis enrolled 27 AIH patients and 27 healthy controls. We analyzed and compared their proportion of pDCs, CD4+, CD8+, γδ T cells, CD25+ regulatory T (Treg) cells, FoxP3+, Foxp3+CD39+ Treg cells, total B (CD19+) cells, and plasma cells (CD38+) in peripheral blood using flow cytometry immunophenotyping. Results: AIH patients had a lower percentage of pDCs (median frequencies of 0.2% vs. 0.4%; p = .002) and higher expression of CD8 T cells (32.5% vs 28.6%; p = 0.008) in peripheral blood, when compared to healthy controls. We did not find statistically significant differences between the groups regarding the other cell subtypes.Conclusion: Our data suggest a persistent suppression of pDCs in AIH patients, along with increased CD8 T cell activity, years after AIH diagnosis and despite of good clinical response to treatment, thus pointing to a role of pDCs in the AIH pathogenesis.
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Affiliation(s)
- Irene P Dos Santos
- Center for Hematology and Hemotherapy, 28132University of Campinas, Campinas, Brazil
| | - Mayra T de Assunção
- Pediatric Gastroenterology Clinic, Hospital de Clínicas (University of Campinas Teaching Hospital), 28132University of Campinas, Campinas, Brazil
| | - Renan M Mauch
- Center for Investigation in Pediatrics, School of Medical Sciences, 28132University of Campinas, Campinas, Brazil
| | - Natascha Silva Sandy
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, 7979Hospital for Sick Children, Toronto, ON, Canada
| | - Marcos Tadeu Nolasco da Silva
- Center for Investigation in Pediatrics, School of Medical Sciences, 28132University of Campinas, Campinas, Brazil.,Department of Pediatrics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Maria Angela Bellomo-Brandão
- Pediatric Gastroenterology Clinic, Hospital de Clínicas (University of Campinas Teaching Hospital), 28132University of Campinas, Campinas, Brazil.,Department of Pediatrics, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Adriana Gut Lopes Riccetto
- Center for Investigation in Pediatrics, School of Medical Sciences, 28132University of Campinas, Campinas, Brazil.,Department of Pediatrics, School of Medical Sciences, University of Campinas, Campinas, Brazil
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12
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Yang F, Fan X, Liu Y, Shen Y, Zhao S, Zheng Y, Men R, Xie Y, Yang L. Long Noncoding RNA and Circular RNA Expression Profiles of Monocyte-Derived Dendritic Cells in Autoimmune Hepatitis. Front Pharmacol 2021; 12:792138. [PMID: 34938195 PMCID: PMC8685411 DOI: 10.3389/fphar.2021.792138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 11/16/2021] [Indexed: 02/05/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a chronic liver disease caused by disruption of liver immune homeostasis. The effect of dendritic cells (DCs) on the pathogenesis of AIH is not fully understood. Long noncoding RNAs (lncRNAs), circular RNAs (circRNAs), and microRNAs (miRNAs) have been shown to play critical roles in the regulation of cell function. In this study, we analyzed the immunophenotypic characteristics of DCs in the peripheral blood. The percentage of mature DCs was higher in AIH patients than in healthy controls (HCs), and the proportion of mature DCs decreased after treatment. We isolated monocyte-derived DCs (moDCs) from the peripheral blood, obtained whole RNA-sequencing (RNA-seq) data for the moDCs from the two groups, and identified differentially expressed (DE) lncRNAs, circRNAs, miRNAs and mRNAs. In addition, we performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses for the DE mRNAs and constructed competing endogenous RNA (ceRNA) networks. ENST00000543334, hsa_circ_0000279, and hsa_circ_0005076 were selected and validated by RT-qPCR. These results provide a possible molecular mechanism of DCs in the pathogenesis of AIH and identify some potential therapeutic targets.
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Affiliation(s)
- Fan Yang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoli Fan
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Yifeng Liu
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Shen
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Shenglan Zhao
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Yanyi Zheng
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Ruoting Men
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Xie
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Li Yang
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
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13
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Huang C, Shen Y, Shen M, Fan X, Men R, Ye T, Yang L. Glucose Metabolism Reprogramming of Regulatory T Cells in Concanavalin A-Induced Hepatitis. Front Pharmacol 2021; 12:726128. [PMID: 34531750 PMCID: PMC8438122 DOI: 10.3389/fphar.2021.726128] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/19/2021] [Indexed: 02/05/2023] Open
Abstract
Autoimmune hepatitis (AIH) is an inflammatory liver disease caused by a dysregulated immune response. Although the pathogenesis of AIH remains unclear, impaired regulatory T cells (Tregs) have been considered a driver of AIH development. Unlike autoreactive T cells, Tregs mainly utilize oxidative phosphorylation (OXPHOS) as their energy supply. Elevated glycolysis has been reported to limit the suppressive functions of Tregs. However, whether glucose metabolism reprogramming in Tregs is involved in AIH etiology remains unknown. The aim of this study was to examine alternations in Treg numbers and functions in AIH patients and concanavalin A (Con A)-induced hepatitis, while exploring associations between impaired Tregs and glucose metabolism. The frequency of Tregs was decreased in the peripheral blood but increased in liver biopsies of AIH patients. Moreover, immunosuppressive therapy rescued circulating Tregs in AIH. In Con A-induced immune hepatitis, enhanced intrahepatic Treg accumulation was observed over time, accompanied by reduced splenic Treg numbers. To investigate whether functional impairment of Tregs occurs in AIH, Tregs were isolated from experimental AIH (EAH) model mice and normal controls and the former displayed downregulated mRNA levels of FOXP3, CTLA4, CD103, TIGIT, CD39, and CD73. EAH model-derived Tregs also produced fewer anti-inflammatory mediators (TGF-β and IL-35) than control Tregs. Moreover, enhanced glycolysis and reduced OXPHOS were found in Tregs from EAH model mice, as reflected by elevated levels of key glycolytic enzymes (HK2, PK-M2, and LDH-A) and a decreased ATP concentration. This study revealed a decreased peripheral Treg frequency and abnormal intrahepatic Treg infiltration in AIH. It is first reported that glucose metabolism reprogramming is associated with decreases and functional impairments in the Treg population, promoting AIH development. Targeting glucose metabolism may provide novel insights for the treatment of AIH.
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Affiliation(s)
- Chen Huang
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Shen
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Mengyi Shen
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoli Fan
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Ruoting Men
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Tinghong Ye
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Li Yang
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
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14
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Study on Protection of Human Umbilical Vein Endothelial Cells from Amiodarone-Induced Damage by Intermedin through Activation of Wnt/ β-Catenin Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8889408. [PMID: 34434487 PMCID: PMC8382522 DOI: 10.1155/2021/8889408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 06/07/2021] [Accepted: 07/06/2021] [Indexed: 02/07/2023]
Abstract
Amiodarone (AM) is one of the most effective antiarrhythmic drugs and normally administrated by intravenous infusion which is liable to cause serious phlebitis. The therapeutic drugs for preventing this complication are limited. Intermedin (IMD), a member of calcitonin family, has a broad spectrum of biological effects including anti-inflammatory effects, antioxidant activities, and antiapoptosis. But now, the protective effects of IMD against amiodarone-induced phlebitis and the underlying molecular mechanism are not well understood. In this study, the aim was to investigate the protective efficiency and potential mechanisms of IMD in amiodarone-induced phlebitis. The results of this study revealed that treatment with IMD obviously attenuated apoptosis and exfoliation of vascular endothelial cells and infiltration of inflammatory cells in the rabbit model of phlebitis induced by intravenous infusion of amiodarone compared with control. Further tests in vitro demonstrated that IMD lessened amiodarone-induced endothelial cell apoptosis, improved amiodarone-induced oxidative stress injury, reduced inflammatory reaction, and activated the Wnt/β-catenin signal pathway which was inhibited by amiodarone. And these effects could be reversed by Wnt/β-catenin inhibitor IWR-1-endo, and si-RNA knocked down the gene of Wnt pathway. These results suggested that IMD exerted the protective effects against amiodarone-induced endothelial injury via activating the Wnt/β-catenin pathway. Thus, IMD could be used as a potential agent for the treatment of phlebitis.
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15
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Jridi I, Canté-Barrett K, Pike-Overzet K, Staal FJT. Inflammation and Wnt Signaling: Target for Immunomodulatory Therapy? Front Cell Dev Biol 2021; 8:615131. [PMID: 33614624 PMCID: PMC7890028 DOI: 10.3389/fcell.2020.615131] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 12/22/2020] [Indexed: 12/14/2022] Open
Abstract
Wnt proteins comprise a large family of highly conserved glycoproteins known for their role in development, cell fate specification, tissue regeneration, and tissue homeostasis. Aberrant Wnt signaling is linked to developmental defects, malignant transformation, and carcinogenesis as well as to inflammation. Mounting evidence from recent research suggests that a dysregulated activation of Wnt signaling is involved in the pathogenesis of chronic inflammatory diseases, such as neuroinflammation, cancer-mediated inflammation, and metabolic inflammatory diseases. Recent findings highlight the role of Wnt in the modulation of inflammatory cytokine production, such as NF-kB signaling and in innate defense mechanisms as well as in the bridging of innate and adaptive immunity. This sparked the development of novel therapeutic treatments against inflammatory diseases based on Wnt modulation. Here, we summarize the role and function of the Wnt pathway in inflammatory diseases and focus on Wnt signaling as underlying master regulator of inflammation that can be therapeutically targeted.
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Affiliation(s)
- Imen Jridi
- Department of Immunology, Leiden University Medical Center, Leiden, Netherlands
| | | | - Karin Pike-Overzet
- Department of Immunology, Leiden University Medical Center, Leiden, Netherlands
| | - Frank J T Staal
- Department of Immunology, Leiden University Medical Center, Leiden, Netherlands
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16
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Fan X, Men R, Huang C, Shen M, Wang T, Ghnewa Y, Ma Y, Ye T, Yang L. Critical roles of conventional dendritic cells in autoimmune hepatitis via autophagy regulation. Cell Death Dis 2020; 11:23. [PMID: 31932577 PMCID: PMC6957703 DOI: 10.1038/s41419-019-2217-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 02/05/2023]
Abstract
Autoimmune hepatitis (AIH) is a necroinflammatory disease associated with interactive cell populations of the innate and adaptive immune systems. The contribution of conventional dendritic cells (cDCs) to AIH and the underlying mechanism remain poorly understood. The frequency of peripheral mature cDCs increased in AIH patients and was positively correlated with disease severity. In experimental autoimmune hepatitis (EAH), hepatic accumulation of mature cDCs was observed, along with an increase in the periphery. Sequentially, bone marrow-derived dendritic cells (BMDC) from EAH mice exhibit more proinflammatory function than those from control mice. In vitro, ConA treatment promotes the maturation of BMDCs, which are characterized by higher expression of MHC-II, costimulatory molecules and cytokine secretion. ConA also induced the expression of autophagy-related protein and the formation of autophagosomes in DCs. To further investigate whether ConA-induced DC activation is associated with autophagy, we utilized 3-MA and bafilomycin A1 to block autophagy flux and accessed the maturation and function of DCs induced by ConA. 3-MA and bafilomycin A1 inhibited the mature status and proinflammatory cytokine secretion and diminished the proliferation and differentiation of CD4+ T cells when ConA-induced BMDCs cocultured CD4+ T cells. We demonstrated that cDCs contribute to the pathogenesis of AIH through excessive maturation. Aberrant autophagy flux plays a vital role in the immunogenic maturation of cDCs in AIH, and tolerogenic cDCs by inhibition of autophagy flux can be exploited as a new therapeutic approach for AIH.
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Affiliation(s)
- Xiaoli Fan
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Ruoting Men
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Chen Huang
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Mengyi Shen
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Tingting Wang
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Yasmeen Ghnewa
- Institute of Liver Studies, King's College London Faculty of Life Sciences and Medicine at King's College Hospital, London, UK
| | - Yun Ma
- Institute of Liver Studies, King's College London Faculty of Life Sciences and Medicine at King's College Hospital, London, UK
| | - Tinghong Ye
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
| | - Li Yang
- Department of Gastroenterology and Hepatology, Sichuan University-Oxford University Huaxi Gastrointestinal Cancer Centre, West China Hospital, Sichuan University, Chengdu, China.
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17
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Duan Y, Qiu Y, Huang X, Dai C, Yang J, He W. Deletion of FHL2 in fibroblasts attenuates fibroblasts activation and kidney fibrosis via restraining TGF-β1-induced Wnt/β-catenin signaling. J Mol Med (Berl) 2020; 98:291-307. [PMID: 31927599 DOI: 10.1007/s00109-019-01870-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/16/2019] [Accepted: 12/20/2019] [Indexed: 12/25/2022]
Abstract
Four-and-a-half LIM domains protein 2 (FHL2) has been proposed involving in β-catenin activity. We previously reported that FHL2 mediates TGF-β1-induced tubular epithelial-to-mesenchymal transition through activating Wnt/β-catenin signaling. However, the potential role and mechanism for FHL2 in TGF-β1-induced fibroblast activation and kidney fibrosis remains unknown. Here, we initially observed higher levels of FHL2 expression in fibrotic kidneys from both patients and mice, especially in α-smooth muscle actin (α-SMA)-positive cells in the interstitium. In cultured interstitial fibroblasts, FHL2 expression was induced by TGF-β1. Knockdown of FHL2 remarkably suppressed TGF-β1-induced α-SMA, type I collagen, and fibronectin expression, while overexpression of FHL2 was sufficient to activate fibroblasts. In mice, fibroblast-specific deletion of FHL2 diminished renal induction of α-SMA, type I collagen, and fibronectin and interstitial extracellular matrix deposition at 2 weeks after ureteral obstruction. We next investigated Wnt/β-catenin activity and found that β-catenin was activated in most FHL2-positive cells in renal interstitium from mice with obstructive nephropathy. In vitro, TGF-β1 induced a physical interaction between FHL2 and β-catenin, especially in the nucleus. Downregulation of FHL2 inhibited TGF-β1-induced active β-catenin upregulation, β-catenin nuclear translocation, and β-catenin-mediated transcription, whereas overexpression of FHL2 was able to activate Wnt/β-catenin signaling. FHL2 overexpression-induced β-catenin-mediated gene transcription could be hindered by ICG-001, but FHL2 overexpression-induced upregulation of active β-catenin could not be. Collectively, this study reveals that the signal regulatory effect of FHL2 on β-catenin plays an important role in TGF-β1-induced fibroblast activation and kidney fibrosis.
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Affiliation(s)
- Ying Duan
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China.,Department of Blood Purification Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Yumei Qiu
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China
| | - Xiaowen Huang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China
| | - Chunsun Dai
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China
| | - Junwei Yang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China
| | - Weichun He
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210003, Jiangsu, China.
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18
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Liu Y, Chen H, Hao J, Li Z, Hou T, Hao H. Characterization and functional prediction of the microRNAs differentially expressed in a mouse model of concanavalin A-induced autoimmune hepatitis. Int J Med Sci 2020; 17:2312-2327. [PMID: 32922197 PMCID: PMC7484648 DOI: 10.7150/ijms.47766] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 08/14/2020] [Indexed: 12/13/2022] Open
Abstract
In order to investigate the altered expression of microRNAs (miRNAs) in the development of autoimmune hepatitis (AIH), the aberrantly expressed miRNAs in the concanavalin A (Con A)-induced AIH mouse model were identified for the first time with microarray in this study. A total of 49 miRNAs (31 up- and 18 down-regulated) were screened out, and the qRT-PCR validation results of 12 chosen miRNAs were consistent with the microarray data. Combined with the profiling of differently expressed mRNAs in the same model (data not shown), 959 predicted target genes (601 for up- and 358 for down-regulated miRNAs) were obtained according to the intersection of databases miRWalk and miRDB, and several hub genes were obtained from the regulatory networks, including Cadm1 and Mier3. These target genes were significantly enriched in the Gene ontology (GO) terms of "transcription, DNA-templated", and were annotated in 47 signaling pathways, comprising "Wnt signaling pathway", "Hippo signaling pathway", "Ferroptosis" and "mitogen-activated protein kinase (MAPK) signaling pathway", according to the GO and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. In the miRNA-GO-network, mmu-miR-193b-3p were exhibited in 33 GO terms of biological processes (BP), and the most significantly regulated GO term in BP categories was "regulation of transcription, DNA-templated". While in the miRNA-pathway-network, mmu-miR-7005-5p were enriched in 37 pathways, which was more than the other specifically expressed miRNAs, and the most significantly enriched pathways were "Endocytosis" and "MAPK signaling pathway". In conclusion, these differently expressed miRNAs seemed to be associated with the onset of AIH, and have the potential to serve as the new targets on the treatment of this disease.
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Affiliation(s)
- Yang Liu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
| | - Hao Chen
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
| | - Jianheng Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
| | - Zhencheng Li
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
| | - Tiezheng Hou
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
| | - Huiqin Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China.,Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, 030619, PR China
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