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Li KQ, Bai X, Ke AT, Ding SQ, Zhang CD, Dai DQ. Ubiquitin-specific proteases: From biological functions to potential therapeutic applications in gastric cancer. Biomed Pharmacother 2024; 173:116323. [PMID: 38401523 DOI: 10.1016/j.biopha.2024.116323] [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: 12/04/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 02/26/2024] Open
Abstract
Deubiquitination, a post-translational modification regulated by deubiquitinases, is essential for cancer initiation and progression. Ubiquitin-specific proteases (USPs) are essential elements of the deubiquitinase family, and are overexpressed in gastric cancer (GC). Through the regulation of several signaling pathways, such as Wnt/β-Catenin and nuclear factor-κB signaling, and the promotion of the expression of deubiquitination- and stabilization-associated proteins, USPs promote the proliferation, metastasis, invasion, and epithelial-mesenchymal transition of GC. In addition, the expression of USPs is closely related to clinicopathological features, patient prognosis, and chemotherapy resistance. USPs therefore could be used as prognostic biomarkers. USP targeting small molecule inhibitors have demonstrated strong anticancer activity. However, they have not yet been tested in the clinic. This article provides an overview of the latest fundamental research on USPs in GC, aiming to enhance the understanding of how USPs contribute to GC progression, and identifying possible targets for GC treatment to improve patient survival.
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Affiliation(s)
- Kai-Qiang Li
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Xiao Bai
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Ang-Ting Ke
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Si-Qi Ding
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Chun-Dong Zhang
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Dong-Qiu Dai
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China; Cancer Center, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China.
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2
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An T, Lu Y, Gong Z, Wang Y, Su C, Tang G, Hou J. Research Progress for Targeting Deubiquitinases in Gastric Cancers. Cancers (Basel) 2022; 14:cancers14235831. [PMID: 36497313 PMCID: PMC9735992 DOI: 10.3390/cancers14235831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Gastric cancers (GCs) are malignant tumors with a high incidence that threaten global public health. Despite advances in GC diagnosis and treatment, the prognosis remains poor. Therefore, the mechanisms underlying GC progression need to be identified to develop prognostic biomarkers and therapeutic targets. Ubiquitination, a post-translational modification that regulates the stability, activity, localization, and interactions of target proteins, can be reversed by deubiquitinases (DUBs), which can remove ubiquitin monomers or polymers from modified proteins. The dysfunction of DUBs has been closely linked to tumorigenesis in various cancer types, and targeting certain DUBs may provide a potential option for cancer therapy. Multiple DUBs have been demonstrated to function as oncogenes or tumor suppressors in GC. In this review, we summarize the DUBs involved in GC and their associated upstream regulation and downstream mechanisms and present the benefits of targeting DUBs for GC treatment, which could provide new insights for GC diagnosis and therapy.
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Affiliation(s)
- Tao An
- School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yanting Lu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250353, China
| | - Zhaoqi Gong
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yongtao Wang
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Chen Su
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361102, China
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen 361005, China
| | - Guimei Tang
- School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
- Correspondence: (G.T.); (J.H.)
| | - Jingjing Hou
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361102, China
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen 361005, China
- Correspondence: (G.T.); (J.H.)
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3
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Mishra R, Banerjea AC. SARS-CoV-2 Spike Targets USP33-IRF9 Axis via Exosomal miR-148a to Activate Human Microglia. Front Immunol 2021; 12:656700. [PMID: 33936086 PMCID: PMC8079643 DOI: 10.3389/fimmu.2021.656700] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/19/2021] [Indexed: 12/24/2022] Open
Abstract
SARS-CoV-2, the novel coronavirus infection has consistently shown an association with neurological anomalies in patients, in addition to its usual respiratory distress syndrome. Multi-organ dysfunctions including neurological sequelae during COVID-19 persist even after declining viral load. We propose that SARS-CoV-2 gene product, Spike, is able to modify the host exosomal cargo, which gets transported to distant uninfected tissues and organs and can initiate a catastrophic immune cascade within Central Nervous System (CNS). SARS-CoV-2 Spike transfected cells release a significant amount of exosomes loaded with microRNAs such as miR-148a and miR-590. microRNAs gets internalized by human microglia and suppress target gene expression of USP33 (Ubiquitin Specific peptidase 33) and downstream IRF9 levels. Cellular levels of USP33 regulate the turnover time of IRF9 via deubiquitylation. Our results also demonstrate that absorption of modified exosomes effectively regulate the major pro-inflammatory gene expression profile of TNFα, NF-κB and IFN-β. These results uncover a bystander pathway of SARS-CoV-2 mediated CNS damage through hyperactivation of human microglia. Our results also attempt to explain the extra-pulmonary dysfunctions observed in COVID-19 cases when active replication of virus is not supported. Since Spike gene and mRNAs have been extensively picked up for vaccine development; the knowledge of host immune response against spike gene and protein holds a great significance. Our study therefore provides novel and relevant insights regarding the impact of Spike gene on shuttling of host microRNAs via exosomes to trigger the neuroinflammation.
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Affiliation(s)
- Ritu Mishra
- Laboratory of Virology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, India
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4
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Wolf J, Auw-Haedrich C, Schlecht A, Boneva S, Mittelviefhaus H, Lapp T, Agostini H, Reinhard T, Schlunck G, Lange CAK. Transcriptional characterization of conjunctival melanoma identifies the cellular tumor microenvironment and prognostic gene signatures. Sci Rep 2020; 10:17022. [PMID: 33046735 PMCID: PMC7550331 DOI: 10.1038/s41598-020-72864-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
Abstract
This study characterizes the transcriptome and the cellular tumor microenvironment (TME) of conjunctival melanoma (CM) and identifies prognostically relevant biomarkers. 12 formalin-fixed and paraffin-embedded CM were analyzed by MACE RNA sequencing, including six cases each with good or poor clinical outcome, the latter being defined by local recurrence and/or systemic metastases. Eight healthy conjunctival specimens served as controls. The TME of CM, as determined by bioinformatic cell type enrichment analysis, was characterized by the enrichment of melanocytes, pericytes and especially various immune cell types, such as plasmacytoid dendritic cells, natural killer T cells, B cells and mast cells. Differentially expressed genes between CM and control were mainly involved in inhibition of apoptosis, proteolysis and response to growth factors. POU3F3, BIRC5 and 7 were among the top expressed genes associated with inhibition of apoptosis. 20 genes, among them CENPK, INHA, USP33, CASP3, SNORA73B, AAR2, SNRNP48 and GPN1, were identified as prognostically relevant factors reaching high classification accuracy (area under the curve: 1.0). The present study provides new insights into the TME and the transcriptional profile of CM and additionally identifies new prognostic biomarkers. These results add new diagnostic tools and may lead to new options of targeted therapy for CM.
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Affiliation(s)
- Julian Wolf
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Claudia Auw-Haedrich
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Anja Schlecht
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Stefaniya Boneva
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Hans Mittelviefhaus
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Thabo Lapp
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Hansjürgen Agostini
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Thomas Reinhard
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Günther Schlunck
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Clemens A K Lange
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.
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Sun J, Shen D, Zheng Y, Ren H, Liu H, Chen X, Gao Y. USP8 Inhibitor Suppresses HER-2 Positive Gastric Cancer Cell Proliferation and Metastasis via the PI3K/AKT Signaling Pathway. Onco Targets Ther 2020; 13:9941-9952. [PMID: 33116578 PMCID: PMC7547803 DOI: 10.2147/ott.s271496] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022] Open
Abstract
Purpose Referring to global cancer statistics, the incidence of gastric cancer (GC) was ranked sixth; however, detailed mechanisms underlying its development were not thoroughly investigated. Previous studies have reported that inhibition of ubiquitin-specific peptidase 8 (USP8) induced degradation of several receptor tyrosine kinases, such as epidermal growth factor receptor (EGFR), embryonic stem cells (ESCs), etc. Nevertheless, the regulation of HER-2 by USP8 and the molecular mechanisms controlling their role in the pathogenesis of GC remain unknown. Patients and Methods A total of 69 patients with histologically confirmed GC were recruited to satisfy the purpose of this study. Initially, tumor samples and GC cell lines were used to detect USP8 and HER-2 levels. Next, MTT and colony formation assays were applied to analyze cell proliferation capability. Cell migration and invasion ability were examined by transwell assays. To examine related mRNA and protein expressions, Western blot assays and quantitative real-time PCR (qRT-PCR) were performed. Immunofluorescence was used to detect the effect of USP8 inhibitor on GC cells. Finally, in vivo experiments were used to examine the effect of USP8 inhibitor. Results Patients with USP8 high-expression tumors have shown worse overall survival while opposite results found in patients with low USP8 expressions. Regarding disease prognosis, patients with low expression of USP8 and HER-2 were performed better prognosis, whereas those with overexpression of USP8 and HER-2 shown poor prognosis. USP8 inhibitor significantly inhibited HER-2 positive cell NCI-N87 proliferation and metastasis. In addition, USP8 stabilizes HER-2, preventing it from ubiquitin proteasome-mediated degradation. In vivo studies confirmed that the USP8 inhibitor inhibited HER-2 positive cell NCI-N87 tumor growth. However, it did not affect the HER2-negative cell MGC-803. Careful investigation unraveled that the USP8 inhibitor significantly inhibited NCI-N87 cell proliferation and metastasis via phosphatidylinositol-3-kinases/protein-serine-threonine kinase (PI3K/AKT) pathway. Conclusion The USP8 inhibited HER-2 positive GC cell proliferation and migration in vivo and in vitro and probably served as a novel potential therapeutic biomarker for HER-2 positive GC.
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Affiliation(s)
- Jiangang Sun
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Dandan Shen
- Key Laboratory of Advanced Pharmaceutical Technology, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Yichao Zheng
- Key Laboratory of Advanced Pharmaceutical Technology, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Hongmei Ren
- Key Laboratory of Advanced Pharmaceutical Technology, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Hongmin Liu
- Key Laboratory of Advanced Pharmaceutical Technology, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Xiaoping Chen
- Department of Hepatic Surgery of Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yongshun Gao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
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Mishra R, Lahon A, Banerjea AC. Dengue Virus Degrades USP33-ATF3 Axis via Extracellular Vesicles to Activate Human Microglial Cells. THE JOURNAL OF IMMUNOLOGY 2020; 205:1787-1798. [PMID: 32848034 DOI: 10.4049/jimmunol.2000411] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022]
Abstract
Dengue virus (DENV) infection disrupts host innate immune signaling at various checkpoints. Cellular levels and stability of intermediate signaling molecules are a crucial hijacking point for a successful viral pathogenesis. Stability and turnover of all the cellular proteins including intermediate signaling molecules are principally regulated by proteasomal degradation pathway. In this study, we show that how DENV infection and particularly DENV-NS1 can modulate the host extracellular vesicle (EV) cargo to manipulate the deubiquitination machinery of the human microglial cell (CHME3). We have performed EV harvesting, size analysis by nanoparticle tracking analysis, identification of cargo microRNA via quantitative PCR, microRNA target validation by overexpression, and knockdown via mimics and anti-miRs, immunoblotting, dual luciferase reporter assay, in vivo ubiquitination assay, chase assay, and promoter activity assay to reach the conclusion. In this study, we show that DENV-infected monocytes and DENV-NS1-transfected cells release high amounts of EVs loaded with miR-148a. These EVs get internalized by human microglial cells, and miR-148a suppresses the ubiquitin-specific peptidase 33 (USP33) protein expression levels via binding to its 3' untranslated region. Reduced USP33 in turn decreases the stability of cellular ATF3 protein via deubiquitylation. ATF3 acts as a suppressor of major proinflammatory gene expression pathways of TNF-α, NF-κB, and IFN-β. Our mechanistic model explains how DENV uses the EV pathway to transfer miR-148a for modulating USP33 and downstream ATF3 levels in human microglial cells and contributes in neuroinflammation within the CNS.
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Affiliation(s)
- Ritu Mishra
- Laboratory of Virology, National Institute of Immunology, New Delhi 110067, India
| | - Anismrita Lahon
- Laboratory of Virology, National Institute of Immunology, New Delhi 110067, India
| | - Akhil C Banerjea
- Laboratory of Virology, National Institute of Immunology, New Delhi 110067, India
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Gâtel P, Piechaczyk M, Bossis G. Ubiquitin, SUMO, and Nedd8 as Therapeutic Targets in Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1233:29-54. [PMID: 32274752 DOI: 10.1007/978-3-030-38266-7_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ubiquitin defines a family of approximately 20 peptidic posttranslational modifiers collectively called the Ubiquitin-like (UbLs). They are conjugated to thousands of proteins, modifying their function and fate in many ways. Dysregulation of these modifications has been implicated in a variety of pathologies, in particular cancer. Ubiquitin, SUMO (-1 to -3), and Nedd8 are the best-characterized UbLs. They have been involved in the regulation of the activity and/or the stability of diverse components of various oncogenic or tumor suppressor pathways. Moreover, the dysregulation of enzymes responsible for their conjugation/deconjugation has also been associated with tumorigenesis and cancer resistance to therapies. The UbL system therefore constitutes an attractive target for developing novel anticancer therapeutic strategies. Here, we review the roles and dysregulations of Ubiquitin, SUMO, and Nedd8 pathways in tumorigenesis, as well as recent advances in the identification of small molecules targeting their conjugating machineries for potential application in the fight against cancer.
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Affiliation(s)
- Pierre Gâtel
- Equipe Labellisée Ligue Contre le Cancer, IGMM, Univ Montpellier, CNRS, Montpellier, France
| | - Marc Piechaczyk
- Equipe Labellisée Ligue Contre le Cancer, IGMM, Univ Montpellier, CNRS, Montpellier, France
| | - Guillaume Bossis
- Equipe Labellisée Ligue Contre le Cancer, IGMM, Univ Montpellier, CNRS, Montpellier, France.
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8
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Functional analysis of deubiquitylating enzymes in tumorigenesis and development. Biochim Biophys Acta Rev Cancer 2019; 1872:188312. [DOI: 10.1016/j.bbcan.2019.188312] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 02/06/2023]
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9
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Sun J, Shi X, Mamun MAA, Gao Y. The role of deubiquitinating enzymes in gastric cancer. Oncol Lett 2019; 19:30-44. [PMID: 31897112 PMCID: PMC6924028 DOI: 10.3892/ol.2019.11062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 10/22/2019] [Indexed: 12/24/2022] Open
Abstract
The epigenetic regulation of gene expression (via DNA methylation, histone modification and microRNA interference) contributes to a variety of diseases, particularly cancer. Protein deubiquitination serves a key role in the mechanism underlying histone modification, and consequently influences tumor development and progression. Improved characterization of the role of ubiquitinating enzymes has led to the identification of numerous deubiquitinating enzymes (DUBs) with various functions. Gastric cancer (GC) is a highly prevalent cancer type that exhibits a high mortality rate. Latest analysis about cancer patient revealed that GC is sixth deadliest cancer type, which frequently occur in male (7.2%) than female (4.1%). Complex associations between DUBs and GC progression have been revealed in multiple studies; however, the molecular mechanism underpinning the metastasis and recurrence of GC is yet to be elucidated. Generally, DUBs were upregulated in gastric cancer. The relation of DUBs and tumor size, classification and staging was observed in GC. Besides, 5-yar survival rate of patients with GC is effeccted by expression level of DUBs. Among the highly expressed DUBs, specifically six DUBs namely UCHs, USPs, OTUs, MJDs, JAMMs and MCPIPs effect on this survival rate. Consequently, the association between GC and DUBs has received increasing attention in recent years. Therefore, in the present review, literature investigating the association between DUBs and GC pathophysiology was analyzed and critically appraised.
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Affiliation(s)
- Jiangang Sun
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Xiaojing Shi
- Zhengzhou University School of Pharmaceutical Science, Zhengzhou, Henan 450001, P.R. China
| | - M A A Mamun
- Zhengzhou University School of Pharmaceutical Science, Zhengzhou, Henan 450001, P.R. China
| | - Yongshun Gao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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10
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Xia Y, Wang L, Xu Z, Kong R, Wang F, Yin K, Xu J, Li B, He Z, Wang L, Xu H, Zhang D, Yang L, Wu JY, Xu Z. Reduced USP33 expression in gastric cancer decreases inhibitory effects of Slit2-Robo1 signalling on cell migration and EMT. Cell Prolif 2019; 52:e12606. [PMID: 30896071 PMCID: PMC6536419 DOI: 10.1111/cpr.12606] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/26/2019] [Accepted: 02/26/2019] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVES Gastric cancer (GC) is one of the most common cancers in the world, causing a large number of deaths every year. The Slit-Robo signalling pathway, initially discovered for its critical role in neuronal guidance, has recently been shown to modulate tumour invasion and metastasis in several human cancers. However, the role of Slit-Robo signalling and the molecular mechanisms underlying its role in the pathogenesis of gastric cancer remains to be elucidated. MATERIALS AND METHODS Slit2, Robo1 and USP33 expressions were analysed in datasets obtained from the Oncomine database and measured in human gastric cancer specimens. The function of Slit2-Robo1-USP33 signalling on gastric cancer cells migration and epithelial-mesenchymal transition (EMT) was studied both in vitro and in vivo. The mechanism of the interaction between Robo1 and USP33 was explored by co-IP and ubiquitination protein analysis. RESULTS The mRNA and protein levels of Slit2 and Robo1 are lower in GC tissues relative to those in adjacent healthy tissues. Importantly, Slit2 inhibits GC cell migration and suppresses EMT process in a Robo-dependent manner. The inhibitory function of Slit2-Robo1 is mediated by ubiquitin-specific protease 33 (USP33) via deubiquitinating and stabilizing Robo1. USP33 expression is decreased in GC tissues, and reduced USP33 level is correlated with poor patient survival. CONCLUSIONS Our study reveals the inhibitory function of Slit-Robo signalling in GC and uncovers a role of USP33 in suppressing cancer cell migration and EMT by enhancing Slit2-Robo1 signalling. USP33 represents a feasible choice as a prognostic biomarker for GC.
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MESH Headings
- Aged
- Animals
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Cell Line, Tumor
- Cell Movement
- Down-Regulation
- Epithelial-Mesenchymal Transition
- Female
- Gene Expression Regulation, Neoplastic
- Heterografts
- Humans
- Intercellular Signaling Peptides and Proteins/genetics
- Intercellular Signaling Peptides and Proteins/metabolism
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Middle Aged
- Models, Biological
- Neoplasm Transplantation
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Prognosis
- Protein Stability
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Small Interfering/genetics
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Signal Transduction
- Stomach Neoplasms/genetics
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/pathology
- Ubiquitin Thiolesterase/antagonists & inhibitors
- Ubiquitin Thiolesterase/genetics
- Ubiquitin Thiolesterase/metabolism
- Ubiquitination
- Roundabout Proteins
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Affiliation(s)
- Yiwen Xia
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Linjun Wang
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Zhipeng Xu
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Ruirui Kong
- State Key Laboratory of Brain and Cognitive Science, Institute of BiophysicsChinese Academy of SciencesBeijingChina
| | - Fei Wang
- State Key Laboratory of Brain and Cognitive Science, Institute of BiophysicsChinese Academy of SciencesBeijingChina
| | - Kai Yin
- Department of General SurgeryAffiliated Hospital of Jiangsu UniversityZhenjiangChina
| | - Jianghao Xu
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Bowen Li
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Zhongyuan He
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Lu Wang
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Hao Xu
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Diancai Zhang
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Li Yang
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Jane Y. Wu
- State Key Laboratory of Brain and Cognitive Science, Institute of BiophysicsChinese Academy of SciencesBeijingChina
- Department of Neurology, Center for Genetic MedicineNorthwestern University Feinberg School of MedicineChicagoIllinois
- Department of NeurologyCenter for Genetic MedicineLurie Cancer CenterChicagoIllinois
| | - Zekuan Xu
- Department of Gastric SurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and TreatmentJiangsu Collaborative Innovation Center for Cancer Personalized MedicineSchool of Publich HealthNanjing Medical UniversityNanjingChina
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11
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Li H, Wang Y. Long Noncoding RNA (lncRNA) MIR22HG Suppresses Gastric Cancer Progression through Attenuating NOTCH2 Signaling. Med Sci Monit 2019; 25:656-665. [PMID: 30670679 PMCID: PMC6352764 DOI: 10.12659/msm.912813] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are important regulators in human disease, including cancers. LncRNA MIR22HG has been shown to inhibit the progression of endometrial carcinoma, lung cancer, and hepatocellular carcinoma. Its role in gastric cancer is unclear. This study investigated MIR22HG effects on gastric cancer. MATERIAL AND METHODS Gastric cancer tissues (n=43) and adjacent normal tissues (n=21) were collected. Patients' 5-year overall survival rate was analyzed. Human normal gastric mucosal cell line (GES-1) and gastric cancer cell lines (MKN-45, AGS, SGC-7901) were cultured. AGS and MKN-45 cells were transfected by pcDNA3 empty vector, pcDNA3-MIR22HG overexpression vector, MIR22HG siRNA and its negative control, NOTCH2 siRNA and its negative control, respectively. Proliferation was explored by CCK-8 assay. Migration and invasion were explored by Transwell. qRT-PCR and western blot were used to investigate mRNA and proteins expression, respectively. RESULTS MIR22HG expression was decreased in gastric cancer tissues and cells (P<0.05). Low MIR22HG expression indicated lower 5-year overall survival rate (P<0.05). Upregulation of MIR22HG inhibited AGS and MKN-45 cell proliferation, migration and invasion (all P<0.05). Downregulation of MIR22HG elevated AGS and MKN-45 cell proliferation, migration, and invasion (all P<0.05). MIR22HG negatively regulated NOTCH2 signaling. Silencing MIR22HG elevated HEY1 and nucleus NOTCH2 expression. Silencing of NOTCH2 suppressed AGS and MKN-45 cells proliferation, migration and invasion (all P<0.05). CONCLUSIONS LncRNA MIR22HG suppressed gastric cancer progression through attenuating NOTCH2 signaling.
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Affiliation(s)
- Huihui Li
- Department of Digestive System, Beilun People's Hospital, Ningbo, Zhejiang, China (mainland)
| | - Yue Wang
- Department of Pharmacology and Toxicology, Wright State University, Fairborn, OH, USA
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