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Ma T, Wu C, Shen Q, Wang Q, Zhou Q. TRIM52 knockdown inhibits proliferation, inflammatory responses and oxidative stress in IL-1β-induced synovial fibroblasts to alleviate temporomandibular joint osteoarthritis. J Cell Mol Med 2024; 28:e18244. [PMID: 38520211 PMCID: PMC10960171 DOI: 10.1111/jcmm.18244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 02/22/2024] [Accepted: 03/04/2024] [Indexed: 03/25/2024] Open
Abstract
To explore the mechanism of tripartite motif 52 (TRIM52) in the progression of temporomandibular joint osteoarthritis (TMJOA). Gene and protein expression were tested by quantitative real-time polymerase chain reaction and western blot, respectively. The levels of pro-inflammatory cytokines and oxidative stress factors were evaluated using enzyme-linked immunosorbent assay and biochemical kit, respectively. Cell counting kit-8 and 5-ethynyl-2'-deoxyuridine assays were carried out to assess cell proliferation. Immunofluorescence was used to detect the expression of CD68 and Vimentin in primary synovial fibroblasts (SFs). Haematoxylin and eosin staining and Safranin O/Fast green were used to evaluate the pathological damage of synovial and cartilage tissue in rats. TRIM52 was upregulated in the synovial tissue and SFs in patients with TMJOA. Interleukin (IL)-1β treatment upregulated TRIM52 expression in TMJOA SFs and normal SF (NSF), promoting cell proliferation, inflammatory response and oxidative stress in NSF, SFs. Silence of TRIM52 relieved the cell proliferation, inflammatory response and oxidative stress induced by IL-1β in SFs, while overexpression of TRIM52 enhanced IL-1β induction. Meanwhile, IL-1β induction activated toll-like receptor 4 (TLR4)/nuclear factor (NF)-κB pathway, which was augmented by upregulation of TRIM52 in NSF, and was attenuated by TRIM52 knockdown in SFs. Besides, pyrrolidinedithiocarbamic acid ameliorated IL-1β-induced proliferation and inflammatory response by inhibiting TLR4/NF-κB signalling. Meanwhile, TRIM52 knockdown inhibited cell proliferation, oxidative stress and inflammatory response in IL-1β-induced SFs through downregulation of TLR4. TRIM52 promoted cell proliferation, inflammatory response, and oxidative stress in IL-1β-induced SFs. The above functions were mediated by the activation of TLR4/NF- κB signal pathway.
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Affiliation(s)
- Tie Ma
- School and Hospital of StomatologyChina Medical UniversityShenyangLiaoningChina
- Department of Oral and Maxillofacial SurgeryLiaoning Provincial Key Laboratory of Oral DiseaseShenyangLiaoningChina
- Department of StomatologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
| | - Chuan‐bin Wu
- School and Hospital of StomatologyChina Medical UniversityShenyangLiaoningChina
- Department of Oral and Maxillofacial SurgeryLiaoning Provincial Key Laboratory of Oral DiseaseShenyangLiaoningChina
| | - Qing‐xia Shen
- School and Hospital of StomatologyChina Medical UniversityShenyangLiaoningChina
- Department of Oral and Maxillofacial SurgeryLiaoning Provincial Key Laboratory of Oral DiseaseShenyangLiaoningChina
| | - Qiang Wang
- School and Hospital of StomatologyChina Medical UniversityShenyangLiaoningChina
- Department of Oral and Maxillofacial SurgeryLiaoning Provincial Key Laboratory of Oral DiseaseShenyangLiaoningChina
| | - Qing Zhou
- School and Hospital of StomatologyChina Medical UniversityShenyangLiaoningChina
- Department of Oral and Maxillofacial SurgeryLiaoning Provincial Key Laboratory of Oral DiseaseShenyangLiaoningChina
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2
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Yeung SHS, Lee RHS, Cheng GWY, Ma IWT, Kofler J, Kent C, Ma F, Herrup K, Fornage M, Arai K, Tse KH. White matter hyperintensity genetic risk factor TRIM47 regulates autophagy in brain endothelial cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.18.566359. [PMID: 38187529 PMCID: PMC10769267 DOI: 10.1101/2023.12.18.566359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
White matter hyperintensity (WMH) is strongly correlated with age-related dementia and hypertension, but its pathogenesis remains obscure. GWAS identified TRIM47 at 17q25 locus as a top genetic risk factor for WMH formation. TRIM family is a class of E3 ubiquitin ligase with pivotal functions in autophagy, which is critical for brain endothelial cell (ECs) remodeling during hypertension. We hypothesize that TRIM47 regulates autophagy and its loss-of-function disturbs cerebrovasculature. Based on transcriptomics and immunohistochemistry, TRIM47 is found selectively expressed by brain ECs in human and mouse, and its transcription is upregulated by artificially-induced autophagy while downregulated in hypertension-like conditions. Using in silico simulation, immunocytochemistry and super-resolution microscopy, we identified the highly conserved binding site between TRIM47 and the LIR (LC3-interacting region) motif of LC3B. Importantly, pharmacological autophagy induction increased Trim47 expression on mouse ECs (b.End3) culture, while silencing Trim47 significantly increased autophagy with ULK1 phosphorylation induction, transcription and vacuole formation. Together, we confirm that TRIM47 is an endogenous inhibitor of autophagy in brain ECs, and such TRIM47-mediated regulation connects genetic and physiological risk factors for WMH formation but warrants further investigation. SUMMARY STATEMENT TRIM47, top genetic risk factor for white matter hyperintensity formation, is a negative regulator of autophagy in brain endothelial cells and implicates a novel cellular mechanism for age-related cerebrovascular changes.
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Chen X, Chen X. The Role of TRIM Proteins in Vascular Disease. Curr Vasc Pharmacol 2024; 22:11-18. [PMID: 38031766 DOI: 10.2174/0115701611241848231114111618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023]
Abstract
There are more than 80 different tripartite motifs (TRIM) proteins within the E3 ubiquitin ligase subfamily, including proteins that regulate intracellular signaling, apoptosis, autophagy, proliferation, inflammation, and immunity through the ubiquitination of target proteins. Studies conducted in recent years have unraveled the importance of TRIM proteins in the pathophysiology of vascular diseases. In this review, we describe the effects of TRIM proteins on vascular endothelial cells, smooth muscle cells, heart, and lungs. In particular, we discuss the potential mechanisms by which TRIMs regulate diseases and shed light on the potential therapeutic applications of TRIMs.
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Affiliation(s)
- Xinxin Chen
- Ophthalmology, Shengjing Hospital of China Medical University, China Medical University, Shenyang, China
| | - Xiaolong Chen
- Ophthalmology, Shengjing Hospital of China Medical University, China Medical University, Shenyang, China
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Dudley-Fraser J, Rittinger K. It's a TRIM-endous view from the top: the varied roles of TRIpartite Motif proteins in brain development and disease. Front Mol Neurosci 2023; 16:1287257. [PMID: 38115822 PMCID: PMC10728303 DOI: 10.3389/fnmol.2023.1287257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/13/2023] [Indexed: 12/21/2023] Open
Abstract
The tripartite motif (TRIM) protein family members have been implicated in a multitude of physiologies and pathologies in different tissues. With diverse functions in cellular processes including regulation of signaling pathways, protein degradation, and transcriptional control, the impact of TRIM dysregulation can be multifaceted and complex. Here, we focus on the cellular and molecular roles of TRIMs identified in the brain in the context of a selection of pathologies including cancer and neurodegeneration. By examining each disease in parallel with described roles in brain development, we aim to highlight fundamental common mechanisms employed by TRIM proteins and identify opportunities for therapeutic intervention.
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Affiliation(s)
- Jane Dudley-Fraser
- Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Katrin Rittinger
- Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, London, United Kingdom
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Pan M, Li X, Xu G, Tian X, Li Y, Fang W. Tripartite Motif Protein Family in Central Nervous System Diseases. Cell Mol Neurobiol 2023:10.1007/s10571-023-01337-5. [PMID: 36988770 DOI: 10.1007/s10571-023-01337-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 03/13/2023] [Indexed: 03/30/2023]
Abstract
Tripartite motif (TRIM) protein superfamily is a group of E3 ubiquitin ligases characterized by the conserved RING domain, the B-box domain, and the coiled-coil domain (RBCC). It is widely involved in various physiological and pathological processes, such as intracellular signal transduction, cell cycle regulation, oncogenesis, and innate immune response. Central nervous system (CNS) diseases are composed of encephalopathy and spinal cord diseases, which have a high disability and mortality rate. Patients are often unable to take care of themselves and their life quality can be seriously declined. Initially, the function research of TRIM proteins mainly focused on cancer. However, in recent years, accumulating attention is paid to the roles they play in CNS diseases. In this review, we integrate the reported roles of TRIM proteins in the pathological process of CNS diseases and related signaling pathways, hoping to provide theoretical bases for further research in treating CNS diseases targeting TRIM proteins. TRIM proteins participated in CNS diseases. TRIM protein family is characterized by a highly conserved RBCC domain, referring to the RING domain, the B-box domain, and the coiled-coil domain. Recent research has discovered the relations between TRIM proteins and various CNS diseases, especially Alzheimer's disease, Parkinson's disease, and ischemic stroke.
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Affiliation(s)
- Mengtian Pan
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China
| | - Xiang Li
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China
| | - Guangchen Xu
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China
| | - Xinjuan Tian
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China
| | - Yunman Li
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China.
| | - Weirong Fang
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China.
- Department of Physiology, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Mailbox 207, Tongjiaxiang 24, Nanjing, Jiangsu, 210009, People's Republic of China.
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Zhang Y, Zhang W, Zheng L, Guo Q. The roles and targeting options of TRIM family proteins in tumor. Front Pharmacol 2022; 13:999380. [PMID: 36249749 PMCID: PMC9561884 DOI: 10.3389/fphar.2022.999380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Tripartite motif (TRIM) containing proteins are a class of E3 ubiquitin ligases, which are critically implicated in the occurrence and development of tumors. They can function through regulating various aspects of tumors, such as tumor proliferation, metastasis, apoptosis and the development of drug resistance during tumor therapy. Some members of TRIM family proteins can mediate protein ubiquitination and chromosome translocation via modulating several signaling pathways, like p53, NF-κB, AKT, MAPK, Wnt/β-catenin and other molecular regulatory mechanisms. The multi-domain nature/multi-functional biological role of TRIMs implies that blocking just one function or one domain might not be sufficient to obtain the desired therapeutic outcome, therefore, a detailed and systematic understanding of the biological functions of the individual domains of TRIMs is required. This review mainly described their roles and underlying mechanisms in tumorigenesis and progression, and it might shade light on a potential targeting strategy for TRIMs in tumor treatment, especially using PROTACs.
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Affiliation(s)
- Yuxin Zhang
- Department of Pharmacy, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China
| | - Wenzhou Zhang
- Department of Pharmacy, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
| | - Lufeng Zheng
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China
- *Correspondence: Lufeng Zheng, ; Qianqian Guo,
| | - Qianqian Guo
- Department of Pharmacy, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China
- *Correspondence: Lufeng Zheng, ; Qianqian Guo,
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Shen H, Gong Q, Zhang J, Wang H, Qiu Q, Zhang J, Luo D. TRIM46 aggravated high glucose-induced hyper permeability and inflammatory response in human retinal capillary endothelial cells by promoting IκBα ubiquitination. EYE AND VISION 2022; 9:35. [PMID: 36064447 PMCID: PMC9443035 DOI: 10.1186/s40662-022-00305-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 08/15/2022] [Indexed: 11/10/2022]
Abstract
Background Diabetic retinopathy (DR) as a severe diabetic complication contributes to blindness. The increased permeability of retinal capillary endothelial cells (RCECs) as well as the production of inflammatory markers are closely related to DR occurrence. We recently revealed that TRIM46 promotes high glucose (HG)-caused ferroptosis in human RCECs (HRCECs). The current study aims to explore the molecular mechanism of how TRIM46 plays its role in DR progression. Methods Western blot was utilized to determine protein expression. The cell counting kit-8 assay was used to observe cell viability. The permeability of the cell layer was determined by measuring the transepithelial electrical resistance and fluorescein isothiocyanate (FITC)-dextran leak. Enzyme-linked immunosorbent assay was used to quantify the protein level of pro-inflammatory cytokines and co-immunoprecipitation was employed to verify the relationship between TRIM46 and IκBα. Results HG dramatically upregulated TRIM46 protein expression in a dose-dependent way. Silencing TRIM46 effectively reversed HG-induced cell growth inhibition, cell cycle arrest, hyper permeability and pro-inflammatory cytokines secretion in HRCECs, while overexpression of TRIM46 exhibited an opposite effect. Furthermore, TRIM46 was able to interact with IκBα and promote the ubiquitination and degradation of IκBα. IκBα overexpression recovered the effects of TRIM46 overexpression in HRCECs. Furthermore, inhibiting the activation of NF-κB partially recovered HG-induced HRCEC injury, whereas TRIM46 overexpression reversed these effects. Conclusion This study demonstrates that TRIM46 interacts with IκBα to activate the NF-κB signaling pathway, thereby enhancing cell proliferation inhibition, hyper permeability and the inflammatory response of HRCECs in a HG state. Supplementary Information The online version contains supplementary material available at 10.1186/s40662-022-00305-2.
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Cao B, Chen Y, Cui J, Sun Y, Xu T. Zw10 negatively regulates the MyD88-mediated NF-κB signaling through autophagy in teleost fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 132:104401. [PMID: 35339534 DOI: 10.1016/j.dci.2022.104401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/19/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
MyD88 is a typical street protein of the TLRs signaling pathway and is a central player in innate immune signaling, which can regulate the NF-κB signaling pathway and promote downstream inflammatory factors. However, studies on the molecular mechanisms of the MyD88-mediated NF-κB signaling pathway in teleosts have been poorly reported. In this study, we report that Zw10 targets MyD88 to inhibit NF-κB activation. Zw10 inhibits cell proliferation and MyD88-mediated innate immunity in fish. Zw10 interacts with MyD88, and its Δ2 domain is very critical for MyD88 degradation. In addition, we found that Zw10 degrade MyD88 by autophagy, thereby negatively regulating the MyD88-mediated NF-κB signaling pathway. This study not only enriches the research on the innate immunity of teleost fish, but also provides insights for the regulating mechanism for mammals.
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Affiliation(s)
- Baolan Cao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ya Chen
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Junxia Cui
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China.
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China.
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9
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Guo Y, Zhou Y, Gu X, Xiang J. Tripartite motif 52 ( TRIM52) promotes proliferation, migration, and regulation of colon cancer cells associated with the NF-κB signaling pathway. J Gastrointest Oncol 2022; 13:1097-1111. [PMID: 35837156 PMCID: PMC9274054 DOI: 10.21037/jgo-22-317] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 04/28/2022] [Indexed: 09/22/2023] Open
Abstract
BACKGROUND With the advancement of early detection and treatment, the incidence of colon cancer (CC) has declined steadily worldwide; however, the mortality remains unacceptably high. Tripartite motif 52 (TRIM52) is a member of the family of highly conserved RBCC (a RING-finger, two B-boxes, and a predicted alpha-helical Coiled-Coil domain were linked to the N-terminal region in sequence) proteins with more than 70 isoforms, which plays an important role in tumorigenesis through different signaling pathways. How it regulates the development of CC remains unknown. METHODS Western blot was used to reveal that TRIM52 protein expression is up-regulated in CC cells. The Analysis of The Cancer Genome Atlas (TCGA) database was used to find the different expressions of TRIM52 between colon cancer tissues and normal colonic epithelial tissues. Cell proliferation assays, migration and invasion assays, and apoptosis were used to verify the changes in cell function after knockdown or overexpression of TRIM52 in CC cells. After that, the key proteins of the nuclear factor (NF)-κB signaling pathway were validated by western blot to explore the role of TRIM52 in the NF-κB signaling pathway. Finally, in order to explore the potential sites of TRIM52, LPS and PDTC were employed to activate and block the NF-κB signaling pathway, and the key proteins of the NF-κB signaling pathway were validated by western blot. RESULTS TGCA database revealed that TRIM52 expression was elevated in CC tissues and correlated with prognosis. It was verified that TRIM52 promoted the proliferation, migration, and invasion of CC cells, and inhibited cell apoptosis. Most of the tripartite motif proteins (TRIMs) have ubiquitin ligase activity related to their highly conserved RING structure. Detection of the key proteins of the NF-κB signaling pathway in CC cells revealed that TRIM52 activated the NF-κB signaling pathway. CONCLUSIONS We confirmed that TRIM52 promotes proliferation, migration, and invasion while inhibiting apoptosis of CC cells. The regulatory effect of TRIM52 on CC cells is related to the activation of the NF-κB signaling pathway. As TRIM52 acted as an upstream stimulator, stimulating the transfer of P65 into the nucleus to activate the NF-κB signaling pathway, it may provide a potential target for prognosis prediction and treatment of CC.
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Affiliation(s)
- Yanjiao Guo
- Department of General Surgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiming Zhou
- Department of General Surgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaodong Gu
- Department of General Surgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jianbin Xiang
- Department of General Surgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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Roy M, Singh R. TRIMs: selective recruitment at different steps of the NF-κB pathway-determinant of activation or resolution of inflammation. Cell Mol Life Sci 2021; 78:6069-6086. [PMID: 34283248 PMCID: PMC11072854 DOI: 10.1007/s00018-021-03900-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 07/04/2021] [Accepted: 07/13/2021] [Indexed: 12/25/2022]
Abstract
TNF-α-induced NF-κB pathway is an essential component of innate and adaptive immune pathway, and it is tightly regulated by various post-translational modifications including ubiquitination. Oscillations in NF-κB activation and temporal gene expression are emerging as critical determinants of inflammatory response, however, the regulators of unique outcomes in different patho-physiological conditions are not well understood. Tripartite Motif-containing proteins (TRIMs) are RING domain-containing E3 ligases involved in the regulation of cellular homeostasis, metabolism, cell death, inflammation, and host defence. Emerging reports suggest that TRIMs are recruited at different steps of TNF-α-induced NF-κB pathway and modulate via their E3 ligase activity. TRIMs show synergy and antagonism in the regulation of the NF-κB pathway and also regulate it in a feedback manner. TRIMs also regulate pattern recognition receptors (PRRs) mediated inflammatory pathways and may have evolved to directly regulate a specific arm of immune signalling. The review emphasizes TRIM-mediated ubiquitination and modulation of TNF-α-regulated temporal and NF-κB signaling and its possible impact on unique transcriptional and functional outcomes.
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Affiliation(s)
- Milton Roy
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat, 390002, India
- Institute for Cell Engineering, The Johns Hopkins University School of Medicine, 733 North Broadway, MRB 731, Baltimore, MD, 21205, USA
| | - Rajesh Singh
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat, 390002, India.
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Pu C, Ciren Y, Liu Y, Long Z. TRIM52 knockdown inhibits cell proliferation and induces apoptosis through activation of the STAT3 pathway in ovarian cancer 1. ALL LIFE 2021. [DOI: 10.1080/26895293.2021.1947394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Chi Pu
- Department of Obstetrics and Gynecology, Shigatse People’s Hospital, Shigatse, Tibet Autonomous Region, People’s Republic of China
| | - Yangla Ciren
- Department of Obstetrics and Gynecology, Shigatse People’s Hospital, Shigatse, Tibet Autonomous Region, People’s Republic of China
| | - Yun Liu
- Department of Obstetrics and Gynecology, Shigatse People’s Hospital, Shigatse, Tibet Autonomous Region, People’s Republic of China
| | - Ziwen Long
- Department of Gastric Cancer Surgery, Fudan University Shanghai Cancer Center, Shanghai, People’s Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People’s Republic of China
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Nenasheva VV, Nikitenko NA, Stepanenko EA, Makarova IV, Andreeva LE, Kovaleva GV, Lysenko AA, Tukhvatulin AI, Logunov DY, Tarantul VZ. Human TRIM14 protects transgenic mice from influenza A viral infection without activation of other innate immunity pathways. Genes Immun 2021; 22:56-63. [PMID: 33864033 DOI: 10.1038/s41435-021-00128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/24/2021] [Accepted: 03/31/2021] [Indexed: 02/01/2023]
Abstract
TRIM14 is an important component of innate immunity that defends organism from various viruses. It was shown that TRIM14 restricted influenza A virus (IAV) infection in cell cultures in an interferon-independent manner. However, it remained unclear whether TRIM14 affects IAV reproduction and immune system responses upon IAV infection in vivo. In order to investigate the effects of TRIM14 at the organismal level we generated transgenic mice overexpressing human TRIM14 gene. We found that IAV reproduction was strongly inhibited in lungs of transgenic mice, resulting in the increased survival of transgenic animals. Strikingly, upon IAV infection, the transcription of genes encoding interferons, IL-6, IL-1β, and TNFα was notably weaker in lungs of transgenic animals than that in control mice, thus indicating the absence of significant induction of interferon and inflammatory responses. In spleen of transgenic mice, where TRIM14 was unexpectedly downregulated, upon IAV infection the transcription of genes encoding interferons was oppositely increased. Therefore, we demonstrated the key role of TRIM14 in anti-IAV protection in the model organism that is realized without noticeable activation of other innate immune system pathways.
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Affiliation(s)
- Valentina V Nenasheva
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia.
| | - Natalia A Nikitenko
- Department of Medical Microbiology, N. F. Gamaleya National Research Centre of Epidemiology and Microbiology, Moscow, Russia
| | - Ekaterina A Stepanenko
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Irina V Makarova
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Lyudmila E Andreeva
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Galina V Kovaleva
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Andrey A Lysenko
- Department of Medical Microbiology, N. F. Gamaleya National Research Centre of Epidemiology and Microbiology, Moscow, Russia
| | - Amir I Tukhvatulin
- Department of Medical Microbiology, N. F. Gamaleya National Research Centre of Epidemiology and Microbiology, Moscow, Russia
| | - Denis Y Logunov
- Department of Medical Microbiology, N. F. Gamaleya National Research Centre of Epidemiology and Microbiology, Moscow, Russia
| | - Vyacheslav Z Tarantul
- Department of Viral and Cellular Molecular Genetics, Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", Moscow, Russia
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Knockdown of TRIM52 alleviates LPS-induced inflammatory injury in human periodontal ligament cells through the TLR4/NF-κB pathway. Biosci Rep 2021; 40:225951. [PMID: 32735017 PMCID: PMC7418211 DOI: 10.1042/bsr20201223] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/15/2020] [Accepted: 07/17/2020] [Indexed: 12/21/2022] Open
Abstract
Tripartite motif-containing (TRIM) 52 (TRIM52) is a vital regulator of inflammation. However, the function and mechanisms of TRIM52 in lipopolysaccharide (LPS)-induced inflammatory injury of human periodontal ligament cells (HPDLCs) in periodontitis remain undefined. In the present research, gene expression was determined using a quantitative polymerase chain reaction and Western blot. The effect of TRIM52 on LPS-induced inflammatory injury was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, flow cytometry, and enyzme-linked immunosorbent assay (ELISA). We found that TRIM52 expression was up-regulated in LPS-treated HPDLCs. Knockdown of TRIM52 alleviated LPS-induced proliferative inhibition and apoptosis promotion in HPDLCs, as evidenced by a decrease in cleaved caspase-3 expression and caspase-3 activity. Silencing TRIM52 suppressed LPS-induced inflammatory response of HPDLCs, as indicated by the decrease in interleukin (IL)-6, IL-8, tumor necrosis factor-α (TNF-α) levels, and increase in IL-10 levels. TRIM52 knockdown inhibited LPS-induced activation of TLR4/nuclear factor-κ B (NF-κB) signaling pathway. Taken together, knockdown of TRIM52 mitigated LPS-induced inflammatory injury via the TLR4/NF-κB signaling pathway, providing an effective therapeutic target for periodontitis.
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Zhang P, Wu Y, Li R, Lv H, Yu B. Tripartite Motif Containing 52 Positively Regulates NF-κB Signaling by Promoting IκBα Ubiquitination in Lipopolysaccharide-Treated Microglial Cell Activation. Med Sci Monit 2020; 26:e925356. [PMID: 33122622 PMCID: PMC7607666 DOI: 10.12659/msm.925356] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background Microglial cell activation is the first response to spinal cord injury (SCI). The purpose of the study was to investigate the role and mechanism of tripartite motif containing 52 (TRIM52) in microglial cell activation and the inflammatory response. Material/Methods The cerebral cortex was isolated in rats, and primary microglial cells were subsequently incubated for 7 to 9 days and activated by lipopolysaccharide (LPS). TRIM52 overexpression and interference lentivirus were constructed, and primary microglial cells were transfected. Cytokine levels of interleukin-1β and tumor necrosis factor-α were detected using enzyme-linked immunosorbent assay kits. TRIM52 mRNA expression and protein levels were examined by real-time polymerase chain reaction and nuclear factor-kappa B (NF-κB) and inhibitory kappa B-alpha (IκBα) protein expression were examined by western blot. The interaction between TRIM52 and IκBα was analyzed by co-immunoprecipitation (Co-IP) detection. Microglial marker Iba-1 and microglial cell activation marker OX-42 were detected by immunofluorescent staining. Results Primary rat microglial cells were successfully isolated and activated by LPS. The expression levels of cytokines and TRIM52 and nuclear accumulation of NF-κB in microglial cells all increased in a dose-dependent manner with LPS. Cytokine and nuclear NF-κB levels decreased after TRIM52 knockdown, while the opposite expression pattern was found in microglial cells transfected with TRIM52 gene overexpression lentivirus. Co-IP revealed the association between TRIM52 and IκBα, and overexpressed TRIM52 promoted the ubiquitination of IκBα and significantly reduced its protein expression. Conclusions TRIM52 activated the NF-κB signaling pathway by promoting IκBα ubiquitination, thereby regulating LPS-induced microglial cell activation and the inflammatory response.
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Affiliation(s)
- Pei Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Yimin Wu
- Department of Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Ruifeng Li
- Department of Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Huicheng Lv
- Department of Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Baolong Yu
- Department of Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
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15
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Li Y, Xu S, Xu Q, Chen Y. Clostridium difficile toxin B induces colonic inflammation through the TRIM46/DUSP1/MAPKs and NF-κB signalling pathway. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 48:452-462. [PMID: 31918570 DOI: 10.1080/21691401.2019.1709856] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Clostridium difficile (C. difficile) infection results in toxin-induced epithelial injury and marked colonic inflammation. Mitogen-activated protein kinase (MAPK) and NF-κB which regulated by MAP kinase phosphatase (MKP, also known as dual specificity phosphatases, DUSP) are fundamental signalling pathways that mediate multiple cellular processes. However, the regulation of DUSP/MAPKs and NF-κB pathway in C. difficile-induced colonic inflammation remains unclear. Here, we report that TcdB significantly inhibits cell viability and induces production of IL-1β and TNF-α and activation of MAPKs and NF-κB. An E3-ubiquitin ligase, TRIM46, ubiquitinates DUSP1, and its knockdown significantly inhibit TcdB-induced activation of MAPKs and NF-κB and production of IL-1β and TNF-α. Moreover, TRIM46 overexpression induced production of IL-1β and TNF-α also reversed by DUSP1 overexpression. We further found that promoter of TRIM46 also demonstrated binding to NF-κBp65, leading to regulate TRIM46 expression. In addition, the increased colonic inflammation induced by C. difficile administration was inhibited by TRIM46 knockdown in vivo. Taken together, the present study shows that TRIM46, as a new regulator of DUSP1/MAPKs and NF-κB signalling pathway, plays an important role in TcdB-induced colonic inflammation.
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Affiliation(s)
- Ying Li
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Su Xu
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Qingqing Xu
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Yijian Chen
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
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16
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Sun J, Liu P, Mao J, Han W, Jiang X, Gu Y. TRIM52 positively mediates NF-κB to promote the growth of human benign prostatic hyperplasia cells through affecting TRAF2 ubiquitination. Life Sci 2020; 259:118380. [PMID: 32898524 DOI: 10.1016/j.lfs.2020.118380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/05/2020] [Accepted: 08/30/2020] [Indexed: 01/21/2023]
Abstract
AIMS Benign prostatic hyperplasia (BPH) is a progressive disease, which severely affects men's health. Here, we sought to analyze the functions and mechanism of action of the tripartite motif protein 52 (TRIM52), a novel prostate basal cell biomarker in BPH. MATERIALS AND METHODS Immunohistochemistry assay was performed in sectioned human BPH tissues, BPH-1 cells, and prostate RWPE-1 cells, to detect the expressions of TRIM52 and NF-κB. Western blotting and qRT-PCR analyses were conducted to measure the relative protein and mRNA expression levels, respectively. Further, lentiviral transfection was performed in BPH-1 and RWPE-1 cells to study the overexpression and siRNA knockdown of TRIM52. Dual-luciferase reporter assay was applied to evaluate the relationship between NF-κB and TRIM52. Furthermore, CCK-8 assay and flow cytometry were employed to analyze cell proliferation and apoptosis. KEY FINDINGS TRIM52 and NF-κB levels were elevated in BPH tissues, and TRIM52 expression positively correlated with NF-κB expression. TRIM52 silencing suppressed the growth of BPH-1 cells and decreased the promoter activity of NF-κB. Moreover, the NF-κB inhibitor, pyrrolidine dithiocarbamate (PDTC), suppressed TRIM52-induced proliferation of RWPE-1 cells and inhibited NF-κB promoter activity in oeTRIM52 transfected RWPE-1 cells. Silencing TRIM52 also inhibited TRAF2 ubiquitination in BPH-1 cells. Further, NF-κB promoter activity in siNC transfected cells was enhanced by the recombinant protein TNF-α and inhibited by siTRIM52. SIGNIFICANCE TRIM52 accelerated the growth of BPH-1 cells by upregulating NF-κB, and TRIM52 could promote TRAF2 ubiquitination. These findings might contribute to the understanding of the biological functions and action mechanisms of TRIM52 in BPH.
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Affiliation(s)
- Jianming Sun
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China.
| | - Peng Liu
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China
| | - Jianmin Mao
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China
| | - Wenjun Han
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China
| | - Xiaomei Jiang
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China
| | - Yin Gu
- Department of Urology and Reproductive Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai 200137, China
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17
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Zhu JJ, Stenfeldt C, Bishop EA, Canter JA, Eschbaumer M, Rodriguez LL, Arzt J. Mechanisms of Maintenance of Foot-and-Mouth Disease Virus Persistence Inferred From Genes Differentially Expressed in Nasopharyngeal Epithelia of Virus Carriers and Non-carriers. Front Vet Sci 2020; 7:340. [PMID: 32637426 PMCID: PMC7318773 DOI: 10.3389/fvets.2020.00340] [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: 03/02/2020] [Accepted: 05/15/2020] [Indexed: 12/13/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) causes persistent infection of nasopharyngeal epithelial cells in ~50% of infected ruminants. The mechanisms involved are not clear. This study provides a continued investigation of differentially expressed genes (DEG) identified in a previously published transcriptomic study analyzing micro-dissected epithelial samples from FMDV carriers and non-carriers. Pathway analysis of DEG indicated that immune cell trafficking, cell death and hematological system could be affected by the differential gene expression. Further examination of the DEG identified five downregulated (chemerin, CCL23, CXCL15, CXCL16, and CXCL17) and one upregulated (CCL2) chemokines in carriers compared to non-carriers. The differential expression could reduce the recruitment of neutrophils, antigen-experienced T cells and dendritic cells and increase the migration of macrophages and NK cells to the epithelia in carriers, which was supported by DEG expressed in these immune cells. Downregulated chemokine expression could be mainly due to the inhibition of canonical NFκB signaling based on DEG in the signaling pathways and transcription factor binding sites predicted from the proximal promoters. Additionally, upregulated CD69, IL33, and NID1 and downregulated CASP3, IL17RA, NCR3LG1, TP53BP1, TRAF3, and TRAF6 in carriers could inhibit the Th17 response, NK cell cytotoxicity and apoptosis. Based on our findings, we hypothesize that (1) under-expression of chemokines that recruit neutrophils, antigen-experienced T cells and dendritic cells, (2) blocking NK cell binding to target cells and (3) suppression of apoptosis induced by death receptor signaling, viral RNA, and cell-mediated cytotoxicity in the epithelia compromised virus clearance and allowed FMDV to persist. These hypothesized mechanisms provide novel information for further investigation of persistent FMDV infection.
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Affiliation(s)
- James J Zhu
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Carolina Stenfeldt
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States.,Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Elizabeth A Bishop
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Jessica A Canter
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States.,Plum Island Animal Disease Center, Oak Ridge Institute for Science and Education (ORISE), Orient, NY, United States
| | - Michael Eschbaumer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald, Germany
| | - Luis L Rodriguez
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Jonathan Arzt
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
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18
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Hage A, Rajsbaum R. To TRIM or not to TRIM: the balance of host-virus interactions mediated by the ubiquitin system. J Gen Virol 2020; 100:1641-1662. [PMID: 31661051 DOI: 10.1099/jgv.0.001341] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The innate immune system responds rapidly to protect against viral infections, but an overactive response can cause harmful damage. To avoid this, the response is tightly regulated by post-translational modifications (PTMs). The ubiquitin system represents a powerful PTM machinery that allows for the reversible linkage of ubiquitin to activate and deactivate a target's function. A precise enzymatic cascade of ubiquitin-activating, conjugating and ligating enzymes facilitates ubiquitination. Viruses have evolved to take advantage of the ubiquitin pathway either by targeting factors to dampen the antiviral response or by hijacking the system to enhance their replication. The tripartite motif (TRIM) family of E3 ubiquitin ligases has garnered attention as a major contributor to innate immunity. Many TRIM family members limit viruses either indirectly as components in innate immune signalling, or directly by targeting viral proteins for degradation. In spite of this, TRIMs and other ubiquitin ligases can be appropriated by viruses and repurposed as valuable tools in viral replication. This duality of function suggests a new frontier of research for TRIMs and raises new challenges for discerning the subtleties of these pro-viral mechanisms. Here, we review current findings regarding the involvement of TRIMs in host-virus interactions. We examine ongoing developments in the field, including novel roles for unanchored ubiquitin in innate immunity, the direct involvement of ubiquitin ligases in promoting viral replication, recent controversies on the role of ubiquitin and TRIM25 in activation of the pattern recognition receptor RIG-I, and we discuss the implications these studies have on future research directions.
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Affiliation(s)
- Adam Hage
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Ricardo Rajsbaum
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.,Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA
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19
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Yan X, Zhao X, Huo R, Xu T. IRF3 and IRF8 Regulate NF-κB Signaling by Targeting MyD88 in Teleost Fish. Front Immunol 2020; 11:606. [PMID: 32373114 PMCID: PMC7179762 DOI: 10.3389/fimmu.2020.00606] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/16/2020] [Indexed: 12/12/2022] Open
Abstract
MyD88 is a conserved intracellular adaptor, which plays an important role in the innate immune system. MyD88 transmits signals for downstream of toll-like and IL-1 receptors to activate NF-κB signaling pathway, which is tightly controlled in the immune response to maintain immune intensity and immune homeostasis at different stages. NF-κB signaling pathway has been extensively studied in mammals, but regulatory molecular mechanism is still unclear in teleost fish. We determined that IRF3 and IRF8 can regulate MyD88-mediated NF-κB signaling pathway in fish. Interestingly, MyD88 is precisely regulated by IRF3 and IRF8 through the same mechanism but in completely opposite ways. IRF3 promotes MyD88-mediated NF-κB signaling pathway, whereas IRF8 inhibits the signaling pathway. MyD88 is regulated via ubiquitin-proteasome degradation, whereas IRF3 or IRF8 inhibited or promoted MyD88 degradation in this pathway. Specifically, in the early stage of lipopolysaccharide (LPS) stimulation or Vibrio infection, up-regulation of IRF3 and down-regulation of IRF8 eventually increased MyD88 expression to activate the NF-κB signaling pathway to trigger immune response. In the late stage of stimulation, down-regulated IRF3 and up-regulated IRF8 synergistically regulate the expression of MyD88 to a normal level, thus maintaining the immune balance of homeostasis and preventing serious damage from persistent over-immunization. This study presents information on Myd88-NF-κB signaling pathway in teleost fish and provides new insights into its regulatory mechanism in fish immune system.
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Affiliation(s)
- Xiaolong Yan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xueyan Zhao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ruixuan Huo
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China.,International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
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20
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Liu Y, Liu K, Huang Y, Sun M, Tian Q, Zhang S, Qin Y. TRIM25 Promotes TNF-α-Induced NF-κB Activation through Potentiating the K63-Linked Ubiquitination of TRAF2. THE JOURNAL OF IMMUNOLOGY 2020; 204:1499-1507. [PMID: 32024699 DOI: 10.4049/jimmunol.1900482] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 01/09/2020] [Indexed: 12/21/2022]
Abstract
As an important effector in response to various intracellular or extracellular stimuli, the NF-κB family extensively participates in a wide spectrum of biological events, and its dysregulation may result in many pathological conditions, such as microbial infection, tumor progression, and neurodegenerative disorders. Previous investigations showed that multiple types of ubiquitination play critical roles in the modulation of the NF-κB signaling pathway, yet the molecular mechanisms are still poorly understood. In the current study, we identified TRIM25, an E3 ubiquitin ligase, as a novel positive regulator in mediating NF-κB activation in human embryonic kidney 293T (HEK293T), HeLa cells, THP-1 cells, and PBMCs. The expression of TRIM25 promoted TNF-α-induced NF-κB signaling, whereas the knockdown had the opposite effect. Furthermore, TRIM25 interacted with TRAF2 and enhanced the K63-linked polyubiquitin chains attached to TRAF2. Moreover, TRIM25 bridged the interaction of TRAF2 and TAK1 or IKKβ. To our knowledge, our study has identified a previously unrecognized role for TRIM25 in the regulation of NF-κB activation by enhancing the K63-linked ubiquitination of TRAF2.
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Affiliation(s)
- Yuchun Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; and
| | - Kunpeng Liu
- Guangdong Provincial Key Laboratory of Liver Disease, Cell-Gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630, China
| | - Yingqi Huang
- Guangdong Provincial Key Laboratory of Liver Disease, Cell-Gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630, China
| | - Meng Sun
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; and
| | - Qingnan Tian
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; and
| | - Shoutao Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; and
| | - Yunfei Qin
- Guangdong Provincial Key Laboratory of Liver Disease, Cell-Gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630, China
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21
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Rosenfeld CS, Hekman JP, Johnson JL, Lyu Z, Ortega MT, Joshi T, Mao J, Vladimirova AV, Gulevich RG, Kharlamova AV, Acland GM, Hecht EE, Wang X, Clark AG, Trut LN, Behura SK, Kukekova AV. Hypothalamic transcriptome of tame and aggressive silver foxes (Vulpes vulpes) identifies gene expression differences shared across brain regions. GENES BRAIN AND BEHAVIOR 2019; 19:e12614. [PMID: 31605445 DOI: 10.1111/gbb.12614] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 12/15/2022]
Abstract
The underlying neurological events accompanying dog domestication remain elusive. To reconstruct the domestication process in an experimental setting, silver foxes (Vulpes vulpes) have been deliberately bred for tame vs aggressive behaviors for more than 50 generations at the Institute for Cytology and Genetics in Novosibirsk, Russia. The hypothalamus is an essential part of the hypothalamic-pituitary-adrenal axis and regulates the fight-or-flight response, and thus, we hypothesized that selective breeding for tameness/aggressiveness has shaped the hypothalamic transcriptomic profile. RNA-seq analysis identified 70 differentially expressed genes (DEGs). Seven of these genes, DKKL1, FBLN7, NPL, PRIMPOL, PTGRN, SHCBP1L and SKIV2L, showed the same direction expression differences in the hypothalamus, basal forebrain and prefrontal cortex. The genes differentially expressed across the three tissues are involved in cell division, differentiation, adhesion and carbohydrate processing, suggesting an association of these processes with selective breeding. Additionally, 159 transcripts from the hypothalamus demonstrated differences in the abundance of alternative spliced forms between the tame and aggressive foxes. Weighted gene coexpression network analyses also suggested that gene modules in hypothalamus were significantly associated with tame vs aggressive behavior. Pathways associated with these modules include signal transduction, interleukin signaling, cytokine-cytokine receptor interaction and peptide ligand-binding receptors (eg, G-protein coupled receptor [GPCR] ligand binding). Current studies show the selection for tameness vs aggressiveness in foxes is associated with unique hypothalamic gene profiles partly shared with other brain regions and highlight DEGs involved in biological processes such as development, differentiation and immunological responses. The role of these processes in fox and dog domestication remains to be determined.
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Affiliation(s)
- Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri.,Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, Missouri.,MU Informatics Institute, University of Missouri, Columbia, Missouri
| | - Jessica P Hekman
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois.,The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Jennifer L Johnson
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois
| | - Zhen Lyu
- Department of Computer Science, University of Missouri, Columbia, Missouri
| | - Madison T Ortega
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Trupti Joshi
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,MU Informatics Institute, University of Missouri, Columbia, Missouri.,Department of Computer Science, University of Missouri, Columbia, Missouri.,Department of Health Management and Informatics, University of Missouri, Columbia, Missouri
| | - Jiude Mao
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Anastasiya V Vladimirova
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Rimma G Gulevich
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Anastasiya V Kharlamova
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Gregory M Acland
- Baker Institute for Animal Health, Cornell University, College of Veterinary Medicine, Ithaca, New York
| | - Erin E Hecht
- Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts
| | - Xu Wang
- Department of Pathobiology, Auburn University, College of Veterinary Medicine, Auburn, Alabama
| | - Andrew G Clark
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York
| | - Lyudmila N Trut
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Susanta K Behura
- MU Informatics Institute, University of Missouri, Columbia, Missouri.,Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Anna V Kukekova
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois
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22
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Expression Profiles of Long Noncoding RNA and mRNA in Epicardial Adipose Tissue in Patients with Heart Failure. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3945475. [PMID: 31355260 PMCID: PMC6637716 DOI: 10.1155/2019/3945475] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 06/27/2019] [Indexed: 01/23/2023]
Abstract
The expression profile of long noncoding RNA (lncRNA) in human epicardial adipose tissue (EAT) has not been widely studied. In the present study, we performed RNA sequencing to analyze the expression profiles of lncRNA and mRNA in EAT in coronary artery disease (CAD) patients with and without heart failure (HF). Our results showed RNA sequencing disclosed 35673 mRNA and 11087 lncRNA corresponding to 15554 genes in EAT in total, while 30 differentially expressed lncRNAs (17 upregulated and 13 downregulated) and 278 differentially expressed mRNAs (129 upregulated and 149 downregulated) were discriminated between CAD patients with and without HF (P<0.05; fold change>2); lncRNA ENST00000610659 drew specific attention for it was the top upregulated lncRNA with highest fold change and corresponded to UNC93B1 gene, which was proved to be related to HF and encoded UNC93B1 protein regulating toll-like receptor signaling, and both of them significantly increased in HF patients in qRT-PCR validation; the top significant upregulated enriched GO terms and KEGG pathway analysis were regulation of lymphocyte activation (GO:0051249) and T cell receptor signaling pathway (hsa04660), respectively. The current findings support the fact that EAT lncRNAs are involved in the inflammatory response leading to the development of HF.
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23
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Lu M, Zhu X, Yang Z, Zhang W, Sun Z, Ji Q, Chen X, Zhu J, Wang C, Nie S. E3 ubiquitin ligase tripartite motif 7 positively regulates the TLR4-mediated immune response via its E3 ligase domain in macrophages. Mol Immunol 2019; 109:126-133. [PMID: 30928727 DOI: 10.1016/j.molimm.2019.01.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 01/22/2019] [Accepted: 01/25/2019] [Indexed: 02/06/2023]
Abstract
Members of the tripartite motif (TRIM) family as E3 ubiquitin ligases have been regarded as critical regulators of innate immunity and antiviral response. However, the role of TRIM7 is still elusive. Here, we provide evidence for the importance of TRIM7 in regulation of the TLR4-mediated innate response. In detail, we find that TRIM7 is highly expressed in antigen-presenting cells like macrophages. Knockdown of TRIM7 clearly inhibits the LPS-induced production of IFN-β, TNF-α and IL-6 in macrophages. Conversely, forced expression of TRIM7 could exert an opposite effect on these pro-inflammatory cytokines. Further analysis indicates that such effect is mediated by the TLR4-associated signaling pathways including MAPKs, NF-κB and IRF3-involved pathways. Truncation of the E3 ligase domain on TRIM7 may reduce the production of pro-inflammatory cytokines, suggesting a critical role of this domain in the regulation of LPS-initiated innate response. Taken together, we report here that TRIM7 may facilitate the TLR4-mediated innate response via its E3 ligase domain in macrophages, which provides new insight into the mechanistic role of TRIM7 in innate immunity.
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Affiliation(s)
- Mingfeng Lu
- Department of Emergency Medicine, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China; Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China; Department of Emergency Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, China
| | - Xuhui Zhu
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China; Department of Epidemiology and Microbiology, Huadong Medical Institute of Biotechniques, Nanjing, China
| | - Zhizhou Yang
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Wei Zhang
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhaorui Sun
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Qijian Ji
- Department of Emergency Medicine, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China; Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xin Chen
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jin Zhu
- Department of Epidemiology and Microbiology, Huadong Medical Institute of Biotechniques, Nanjing, China
| | - Changjun Wang
- Department of Epidemiology and Microbiology, Huadong Medical Institute of Biotechniques, Nanjing, China
| | - Shinan Nie
- Department of Emergency Medicine, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China; Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.
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Pan S, Deng Y, Fu J, Zhang Y, Zhang Z, Ru X, Qin X. TRIM52 promotes colorectal cancer cell proliferation through the STAT3 signaling. Cancer Cell Int 2019; 19:57. [PMID: 30918473 PMCID: PMC6419475 DOI: 10.1186/s12935-019-0775-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/08/2019] [Indexed: 01/05/2023] Open
Abstract
Background The tripartite motif (TRIM) family proteins are implicated in the pathogenesis of various human malignancies. The up-regulation and oncogenic roles of TRIM52 have been reported in hepatocellular carcinoma. In the current study, we aimed to examine its expression and possible function in colorectal cancer (CRC). Method Immunohistochemical staining or immunoblotting analysis was carried out to detect protein expression. Cell proliferation and apoptosis was evaluated by Cell Counting Kit-8 (CCK-8) and flow cytometry assay, respectively. Results TRIM52 expression was increased in 67.5% of CRC tissues (54/80) compared to matched normal colonic mucosa. TRIM52 expression was closely related with tumor size (p = 0.0376), tumor stage (p = 0.0227) and overall survival (p = 0.0177). Short hairpin RNAs (shRNAs) targeting TRIM52 had the potential anti-proliferative effects on CRC cell lines, SW480 and LoVo, by inducing cell apoptosis. In addition, an in vivo xenograft experiment confirmed the in vitro results. In addition, TRIM52 shRNAs decreased the phosphorylation of STAT3, but increased the protein expression of SHP2, a negative regulator of STAT3 phosphorylation. TRIM52 formed a complex with SHP2 and promoted the ubiquitination of SHP2. Furthermore, inhibition of the STAT3 signaling by AG490 in RKO cells significantly abolished the effects of TRIM52 overexpression on cell proliferation, apoptosis and STAT3 activation. Conclusions TRIM52 might exert oncogenic role in CRC via regulating the STAT3 signaling pathway.
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Affiliation(s)
- Shengli Pan
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
| | - Yingying Deng
- Department of Ophtalmology, Shanghai Eighth People's Hospital, Shanghai, China
| | - Jun Fu
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
| | - Yuhao Zhang
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
| | - Zhijin Zhang
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
| | - Xiaokun Ru
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
| | - Xianju Qin
- Division of Gastrointestinal Surgery, Department of General Surgery, Shanghai Eighth People's Hospital, No. 8 Caobao Road, Xuhui District, Shanghai, 200232 China
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TRIM52 plays an oncogenic role in ovarian cancer associated with NF-kB pathway. Cell Death Dis 2018; 9:908. [PMID: 30185771 PMCID: PMC6125490 DOI: 10.1038/s41419-018-0881-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 06/16/2018] [Accepted: 07/09/2018] [Indexed: 02/07/2023]
Abstract
Emerging evidence suggests that the members of the tripartite motif (TRIM) family play a crucial role in cancer development and progression. The purpose of the study was to explore TRIM52's role in tumorigenesis and its potential molecular mechanism in ovarian cancer. The study demonstrated that knockdown of TRIM52 in SKOV3 and CAOV3 cells inhibited ovarian cancer cell invasion, migration, and proliferation, and induced cell apoptosis. On the contrary, overexpression of TRIM52 in HO8910 cells showed contrary results. Further, overexpression of TRIM52 enhanced the expression of phosphorylated IKKβ and IKBα proteins and nuclear protein P65, which implied the activation of NF-kB signal pathway. Knockdown of TRIM52 downregulated the mRNA and protein levels of NF-kB signal downstream effectors of the NF-kB pathway, including MMP9, Bcl2, IL8, and TNFα, but upregulated caspase-3 expression. These results suggested that activation of the NF-kB pathway is involved in TRIM52-mediated regulation in ovarian cancer. The nude mice study further confirmed that knockdown of TRIM52 blocked tumor growth, inhibited cell proliferation, and promoted cell apoptosis. Our data strongly suggested that TRIM52 plays an oncogenic role in ovarian cancer development associated with the NF-kB signal pathway and may be a potential target for cancer therapy.
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Abstract
Innate immunity is traditionally thought of as the first line of defense against pathogens that enter the body. It is typically characterized as a rather weak defense mechanism, designed to restrict pathogen replication until the adaptive immune response generates a tailored response and eliminates the infectious agent. However, intensive research in recent years has resulted in better understanding of innate immunity as well as the discovery of many effector proteins, revealing its numerous powerful mechanisms to defend the host. Furthermore, this research has demonstrated that it is simplistic to strictly separate adaptive and innate immune functions since these two systems often work synergistically rather than sequentially. Here, we provide a broad overview of innate pattern recognition receptors in antiviral defense, with a focus on the TRIM family, and discuss their signaling pathways and mechanisms of action with special emphasis on the intracellular antibody receptor TRIM21.
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Affiliation(s)
| | - Leo C James
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom.
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Benke S, Agerer B, Haas L, Stöger M, Lercher A, Gabler L, Kiss I, Scinicariello S, Berger W, Bergthaler A, Obenauf AC, Versteeg GA. Human tripartite motif protein 52 is required for cell context-dependent proliferation. Oncotarget 2018; 9:13565-13581. [PMID: 29568378 PMCID: PMC5862599 DOI: 10.18632/oncotarget.24422] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/30/2018] [Indexed: 12/16/2022] Open
Abstract
Tripartite motif (TRIM) proteins have been shown to play important roles in cancer development and progression by modulating cell proliferation or resistance from cell death during non-homeostatic stress conditions found in tumor micro-environments. In this study, we set out to investigate the importance for cellular fitness of the virtually uncharacterized family member TRIM52. The human TRIM52 gene has arisen recently in evolution, making it unlikely that TRIM52 is required for basic cellular functions in normal cells. However, a recent genome-wide ablation screening study has suggested that TRIM52 may be essential for optimal proliferation or survival in certain genetic cancer backgrounds. Identifying genes which fit this concept of genetic context-dependent fitness in cancer cells is of interest as they are promising targets for tumor-specific therapy. We report here that TRIM52 ablation significantly diminished the proliferation of specific glioblastoma cell lines in cell culture and mouse xenografts by compromising their cell cycle progression in a p53-dependent manner. Together, our findings point to a non-redundant TRIM52 function that is required for optimal proliferation.
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Affiliation(s)
- Stefan Benke
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
| | - Benedikt Agerer
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
| | - Lisa Haas
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna 1030, Austria
| | - Martin Stöger
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
| | - Alexander Lercher
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna 1090, Austria
| | - Lisa Gabler
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna A-1090, Austria
| | - Izabella Kiss
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
| | - Sara Scinicariello
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna A-1090, Austria
| | - Andreas Bergthaler
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna 1090, Austria
| | - Anna C Obenauf
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna 1030, Austria
| | - Gijs A Versteeg
- Department of Microbiology, Immunobiology, and Genetics, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, Vienna 1030, Austria
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Polysaccharides from Citrus grandis L. Osbeck suppress inflammation and relieve chronic pharyngitis. Microb Pathog 2017; 113:365-371. [DOI: 10.1016/j.micpath.2017.11.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/10/2017] [Accepted: 11/10/2017] [Indexed: 12/18/2022]
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Zhang Y, Wu SS, Chen XH, Tang ZH, Yu YS, Zang GQ. Tripartite Motif Containing 52 (TRIM52) Promotes Cell Proliferation in Hepatitis B Virus-Associated Hepatocellular Carcinoma. Med Sci Monit 2017; 23:5202-5210. [PMID: 29089476 PMCID: PMC5678430 DOI: 10.12659/msm.907242] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Chronic hepatitis B virus (HBV) infection is the major cause of hepatocellular carcinoma (HCC). HBV X protein (HBx) plays a crucial role in the development of HCC. Moreover, many tripartite motif (TRIM) family proteins exert diverse biological functions in hepatocarcinogenesis. However, as a novel member of this family, the specific effect of TRIM52 is still largely obscure. In the present study, we investigated the expression and function of TRIM52 in HBV-associated HCC. Material/Methods Fluorescence quantitative polymerase chain reaction (FQ-PCR) was performed to detect the HBV DNA levels in the peripheral blood of HCC patients. Quantitative real-time PCR (qRT-PCR) and Western blot analysis were performed to detect the expression of TRIM52, HBx, and NF-κB p65. HBx-pcDNA3.1 and TRIM52-shRNA were used to induce HBx ectopic expression and TRIM52 silencing, respectively. Pyrrolidine dithiocarbamate (PDTC) was used to block the activation of NF-κB. Cell proliferation was detected using the Cell Counting Kit-8 (CCK-8) assay. Results TRIM52 expression was up-regulated together with HBx in HBV-associated HCC tissues. Ectopic expression of HBx elevated TRIM52 expression in HepG2 cells. TRIM52 silencing repressed the proliferation of HepG2.2.15 cells. Moreover, NF-κB p65 expression was increased in HCC cell lines. Blocking NF-κB activation with PDTC suppressed TRIM52 expression and attenuated the viability of HepG2.2.15 cells. Conclusions These findings indicate that TRIM52 can promote cell proliferation and HBx may regulate TRIM52 expression via the NF-κB signaling pathway in HBV-associated HCC.
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Affiliation(s)
- Yi Zhang
- Medical College of Soochow University, Suzhou, Jiangsu, China (mainland)
| | - Shan-Shan Wu
- Department of Infectious Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Xiao-Hua Chen
- Department of Infectious Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Zheng-Hao Tang
- Department of Infectious Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Yong-Sheng Yu
- Department of Infectious Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Guo-Qing Zang
- Department of Infectious Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
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