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Lv LX, Zhang Q, Zhao XF, Wang JX. Identification of COP9 signalosome (CSN) subunits and antiviral function analysis of CSN5 in shrimp. FISH & SHELLFISH IMMUNOLOGY 2024; 151:109679. [PMID: 38844185 DOI: 10.1016/j.fsi.2024.109679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/01/2024] [Accepted: 06/04/2024] [Indexed: 06/10/2024]
Abstract
The constitutive photomorphogenesis 9 (COP9) signalosome (CSN) typically composing of eight subunits (CSN1-8) mediates the process of deneddylation and deubiquitination. The fifth subunit of COP9 signalosome, CSN5, has special characteristics compared with the other seven subunits, and plays vital roles in the deneddylation activity and diverse cellular processes. However, the role of CSN5 in antiviral immunity is not clear. In this study, we identified 8 subunits (CSN1-8) of COP9 signalosome in shrimp Marsupenaeus japonicus. CSN1-6 were existed in all tested tissues, but CSN7-CSN8 were not detected in hepatopancreas. After WSSV challenged, the expression level of Csn1 to Csn4, and Csn6 to Csn8 were highly decreased, but the expression level of Csn5 was conspicuously increased in shrimp challenged by white spot syndrome virus (WSSV). The CSN5 was recombinantly expressed in Escherichia coli and its polyclonal antibody was prepared. The expression level of CSN5 was conspicuously increased at RNA and protein levels in the shrimp challenged by WSSV. After knockdown of Csn5 by RNA interference, the WSSV replication was obviously increased in shrimp. When injected the recombinant protein of CSN5 with the membrane penetrating peptide into shrimp, WSSV replication was inhibited and the survival rate of shrimp was significantly improved compared with control. We further analyzed the expression of antimicrobial peptides (AMPs) in Csn5-RNAi shrimp, and the results showed that the expression of several AMPs was declined significantly. These results indicate that CSN5 inhibits replication of WSSV via regulating expression of AMPs in shrimp, and the recombinant CSN5 might be used in shrimp aquaculture for the white spot syndrome disease control.
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Affiliation(s)
- Li-Xia Lv
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Qiang Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Xiao-Fan Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, Shandong, China.
| | - Jin-Xing Wang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, Shandong, China.
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Rodrigo MAM, Michalkova H, Jimenez AMJ, Petrlak F, Do T, Sivak L, Haddad Y, Kubickova P, de Los Rios V, Casal JI, Serrano-Macia M, Delgado TC, Boix L, Bruix J, Martinez Chantar ML, Adam V, Heger Z. Metallothionein-3 is a multifunctional driver that modulates the development of sorafenib-resistant phenotype in hepatocellular carcinoma cells. Biomark Res 2024; 12:38. [PMID: 38594765 PMCID: PMC11003176 DOI: 10.1186/s40364-024-00584-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 03/22/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND & AIMS Metallothionein-3 (hMT3) is a structurally unique member of the metallothioneins family of low-mass cysteine-rich proteins. hMT3 has poorly characterized functions, and its importance for hepatocellular carcinoma (HCC) cells has not yet been elucidated. Therefore, we investigated the molecular mechanisms driven by hMT3 with a special emphasis on susceptibility to sorafenib. METHODS Intrinsically sorafenib-resistant (BCLC-3) and sensitive (Huh7) cells with or without up-regulated hMT3 were examined using cDNA microarray and methods aimed at mitochondrial flux, oxidative status, cell death, and cell cycle. In addition, in ovo/ex ovo chick chorioallantoic membrane (CAM) assays were conducted to determine a role of hMT3 in resistance to sorafenib and associated cancer hallmarks, such as angiogenesis and metastastic spread. Molecular aspects of hMT3-mediated induction of sorafenib-resistant phenotype were delineated using mass-spectrometry-based proteomics. RESULTS The phenotype of sensitive HCC cells can be remodeled into sorafenib-resistant one via up-regulation of hMT3. hMT3 has a profound effect on mitochondrial respiration, glycolysis, and redox homeostasis. Proteomic analyses revealed a number of hMT3-affected biological pathways, including exocytosis, glycolysis, apoptosis, angiogenesis, and cellular stress, which drive resistance to sorafenib. CONCLUSIONS hMT3 acts as a multifunctional driver capable of inducing sorafenib-resistant phenotype of HCC cells. Our data suggest that hMT3 and related pathways could serve as possible druggable targets to improve therapeutic outcomes in patients with sorafenib-resistant HCC.
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Affiliation(s)
- Miguel Angel Merlos Rodrigo
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic.
| | - Hana Michalkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Ana Maria Jimenez Jimenez
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Frantisek Petrlak
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Tomas Do
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Ladislav Sivak
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Yazan Haddad
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Petra Kubickova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Vivian de Los Rios
- Department of Cellular and Molecular Medicine and Proteomic Facility, Centro de Investigaciones Biológicas (CIB-CSIC), Ramiro de Maeztu 9, Madrid, 280 40, Spain
| | - J Ignacio Casal
- Department of Cellular and Molecular Medicine and Proteomic Facility, Centro de Investigaciones Biológicas (CIB-CSIC), Ramiro de Maeztu 9, Madrid, 280 40, Spain
| | - Marina Serrano-Macia
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, Derio, 48160, Spain
| | - Teresa C Delgado
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, Derio, 48160, Spain
| | - Loreto Boix
- Barcelona-Clínic Liver Cancer Group, Liver Unit, Institut d'Investigacions Biomèdiques August Pi I Sunyer, Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Jordi Bruix
- Barcelona-Clínic Liver Cancer Group, Liver Unit, Institut d'Investigacions Biomèdiques August Pi I Sunyer, Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Maria L Martinez Chantar
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, Derio, 48160, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic.
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Zhang F, Li Q, Zhang Y, Li N, Rao M, Li S, Ai Z, Yan S, Tian Z. COPS3 inhibition promotes cell proliferation blockage and anoikis via regulating PFKFB3 in osteosarcoma cancer cells. Eur J Pharmacol 2023; 951:175799. [PMID: 37201626 DOI: 10.1016/j.ejphar.2023.175799] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/09/2023] [Accepted: 05/16/2023] [Indexed: 05/20/2023]
Abstract
As a key component of the COP9 signalosome complex, which participates in a variety of physiological processes, COPS3 is intimately related to multiple cancers. It promotes cell proliferation, progression and metastasis in several cancer cells. However, whether COPS3 participates in regulating anoikis, a specific kind of apoptosis and functions as an essential modulator of cell metastasis, has not yet been studied. Here, we found COPS3 is highly expressed in several cancers especially in osteosarcoma (OS). Overexpression of COPS3 promoted cell proliferation, cell viability and migration/invasion in both control cells and oxaliplatin (Oxa) treated cells. On the contrary, knockdown of COPS3 further enhanced the cytotoxicity of Oxa. Utilizing bioinformatics analysis, we found that COPS3 was higher expressed in the metastatic group, and associated with the extra-cellular matrix (ECM) receptor interaction pathway, which involve in regulating anoikis. In an anoikis model, COPS3 expression varied and genetic modification of COPS3 influenced the cell death enhanced by Oxa. PFKFB3, an essential modulator of glycolysis, was found to interact with COPS3. Inhibition of PFKFB3 promoted apoptosis and anoikis enhanced by Oxa, and COPS3 overexpression failed to rescue this cell death. On the contrary, in the COPS3 knockdown cells, overexpression of PFKFB3 recovered the anoikis resistance, indicating COPS3 function upstream of PFKFB3. In summary, our results elucidated that COPS3 modulated anoikis via affecting PFKFB3 in OS cancer cells.
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Affiliation(s)
- Fan Zhang
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, 450008, China
| | - Qianqian Li
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Yaqin Zhang
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Na Li
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Mengjiao Rao
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Shi Li
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Zhiying Ai
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China
| | - Siyuan Yan
- Key Laboratory of Precision Oncology in Universities of Shandong, Institute of Precision Medicine, Jining Medical University, Jining, 272067, China.
| | - Zhichao Tian
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, 450008, China.
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Niu J, Yan T, Guo W, Wang W, Ren T, Huang Y, Zhao Z, Yu Y, Chen C, Huang Q, Lou J, Guo L. The COPS3-FOXO3 positive feedback loop regulates autophagy to promote cisplatin resistance in osteosarcoma. Autophagy 2022:1-18. [DOI: 10.1080/15548627.2022.2150003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Jianfang Niu
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Taiqiang Yan
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Wei Guo
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Wei Wang
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Tingting Ren
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Yi Huang
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Zhiqing Zhao
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Yiyang Yu
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Chenglong Chen
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Qingshan Huang
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Jingbing Lou
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
| | - Lei Guo
- Musculoskeletal Tumor Center, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, China
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5
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COPS3 Promotes Proliferation, Invasion, and EMT of Colorectal Cancer Cells by MEK/ERK Pathway. DISEASE MARKERS 2022; 2022:7594489. [PMID: 35903293 PMCID: PMC9325580 DOI: 10.1155/2022/7594489] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/01/2022] [Indexed: 11/23/2022]
Abstract
Colorectal cancer (CRC) is one of the most aggressive cancers with poor prognosis and high mortality. The study of the pathogenesis of CRC is a top priority in providing effective diagnostic and prognostic strategies for CRC. COPS3 protein is a subunit of the COP9 signaling body (CSN), which is closely associated with the development of multiple types of tumors. However, there are few studies on the role of COPS3 in colon adenocarcinoma (COAD). This study investigated the effects of COPS3 on proliferation, motility, and EMT of colorectal cancer cells and related mechanisms. COPS3 was highly expressed in COAD. The depletion of COPS3 suppressed the viability and stimulated the apoptosis of COAD cells. Depletion of COPS3 suppressed the motility and EMT process of COAD cells. Mechanically, we found that COPS3 could mediate MEK/ERK pathway and therefore affected the process of COAD cells. We thought that COPS3 could serve as a promising COAD target.
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Zhou H, Sun W, Zou J. Analysis of expression profiles and prognostic value of COP9 signalosome subunits for patients with head and neck squamous cell carcinoma. Oncol Lett 2021; 22:803. [PMID: 34630710 PMCID: PMC8477071 DOI: 10.3892/ol.2021.13064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/14/2021] [Indexed: 11/25/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) has been associated with poor prognosis, due to its strong invasive ability and resistance to chemotherapy. Thus, there is an urgent requirement to identify effective biomarkers for the early diagnosis and prognostic evaluation of HNSCC. COP9 signalosome (COPS) regulates numerous cancer-associated biological processes in various malignancies. The aim of the present study was to investigate the association between COPS and HNSCC. The mRNA expression profiles of COPS in HNSCC were analyzed using UALCAN, Oncomine and UCSC Xena databases. The association between overall survival time in patients with HNSCC and the COPS genes was investigated using the Kaplan-Meier plotter database. The CERES score was obtained and evaluated to determine the importance of the COPS genes for survival of the HNSCC cell lines. Functional analysis for Gene Ontology and Gene Set Enrichment Analysis (GSEA) was performed using The Database for Annotation, Visualization and Integrated Discovery and GSEA software, respectively. After knocking down COPS5 and COPS6, cell Counting Kit-8 and wound healing assays were used to detect cell growth and migration of the CAL27 and SCC25 cell lines, respectively. Among the 10 COPS genes examined, most COPS subunits were upregulated in HNSCC samples compared with that in normal tissues, except for COPS9. Increased mRNA expression level of COPS5, COPS6, COPS7B, COPS8 and COPS9 was associated with TNM stage in patients with HNSCC. High mRNA expression level of COPS2, COPS5, COPS6, COPS7A, COPS7B, COPS8 and COPS9 had prognostic significance of patients with HNSCC. Knockdown of COPS5 and COPS6 inhibited cell growth and migration of the CAL27 and SCC25 cell lines. The results from the present study suggested that COPS subunits could be potential biomarkers in patients with HNSCC. COPS5 and COPS6 were important for cell survival and migration of the HNSCC cells.
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Affiliation(s)
- Hao Zhou
- Department of Oral and Maxillofacial Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
| | - Wei Sun
- Department of Oral and Maxillofacial Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
| | - Jiaruan Zou
- Department of Oral and Maxillofacial Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
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Liu GM, Zeng HD, Zhang CY, Xu JW. Identification of METTL3 as an Adverse Prognostic Biomarker in Hepatocellular Carcinoma. Dig Dis Sci 2021; 66:1110-1126. [PMID: 32333311 DOI: 10.1007/s10620-020-06260-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 04/08/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION N6-methyladenosine (m6A), the most prominent mRNA modification, plays a critical role in many physiological and pathological processes. However, the roles of m6A RNA modification in hepatocellular carcinoma (HCC) remain largely unknown. MATERIALS AND METHODS We investigated the mRNA expression and clinical significance of m6A-related genes using data from The Cancer Genome Atlas (TCGA) liver hepatocellular carcinoma cohort. Mutation, copy number variation (CNV), methylation, differential expression, and gene ontology analyses, gene set enrichment analysis and the construction of a competing endogenous RNA (ceRNA) regulatory network were performed to investigate the underlying mechanisms of the aberrant expression of m6A-related genes. RESULTS m6A-related genes were frequently dysregulated in cancers but with a cancer-specific pattern. METTL3, YTHDF2, and ZC3H13 were found to be independent prognostic factors of overall survival (OS); however, only METTL3 was found to be an independent prognostic factor of recurrence-free survival (RFS). Joint effects analysis showed the predictive capacity of combining METTL3, YTHDF2, and ZC3H13 for HCC OS. Then the potential mechanisms of METTL3 were further explored due to its prognostic role in both OS and RFS. CNV and DNA methylation, but not somatic mutations, might contribute to the abnormal upregulation of METTL3 in HCC. Significantly altered genes, microRNAs, and lncRNAs were identified, and a ceRNA regulatory network was constructed to explain the upregulation of METTL3 in HCC. CONCLUSIONS Our study identified several m6A-related genes, especially METTL3, that could be potential prognostic biomarkers in HCC.
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Affiliation(s)
- Gao-Min Liu
- Department of Hepatobiliary Surgery, Meizhou People's Hospital, No. 63 Huangtang Road, Meizhou, 514000, China. .,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, China.
| | - Hua-Dong Zeng
- Department of Hepatobiliary Surgery, Meizhou People's Hospital, No. 63 Huangtang Road, Meizhou, 514000, China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, China
| | - Cai-Yun Zhang
- Department of Hepatobiliary Surgery, Meizhou People's Hospital, No. 63 Huangtang Road, Meizhou, 514000, China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, China
| | - Ji-Wei Xu
- Department of Hepatobiliary Surgery, Meizhou People's Hospital, No. 63 Huangtang Road, Meizhou, 514000, China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, China
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Meng D, Liu T, Ma F, Wang M. Screening the key genes of prognostic value in the microenvironment for head and neck squamous cell carcinoma. Medicine (Baltimore) 2021; 100:e24184. [PMID: 33530209 PMCID: PMC7850760 DOI: 10.1097/md.0000000000024184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 12/12/2020] [Indexed: 01/05/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth common malignancy worldwide. The tumor microenvironment is highly related to tumor initiation, progression, and prognosis. This study aims to screen the tumor microenvironment related key genes of prognostic value for HNSCC.The gene expression and clinical data for HNSCC were downloaded from the cancer genome atlas (TCGA). The immune/stromal/ESTIMATE scores were downloaded from the website of the MD Anderson Cancer Center. Correlation of patient gender and tumor grade with immune/stromal/ESTIMATE score was tested. Patients were divided into low and high immune/stromal/ESTIMATE score subgroups. Survival analysis was performed to evaluate the prognostic value of the immune/stromal/ESTIMATE score. Tumor microenvironment related differentially expressed genes were determined and applied for functional enrichment analysis and protein-protein interaction network was predicted. The prediction value of the common differentially expressed genes on patient survival was tested.Four hundred eighty samples with complete clinical, expression data, and immune/stromal/ESTIMATE scores were enrolled for analysis. Immune/stromal/ESTIMATE score was higher in female patients than males. A total of 44 common differentially expressed genes were screened in high and low immune/stromal/ESTIMATE score subgroups. Of the 44 genes, 7 genes (ADGRG7, CSN3, CST8, KRT81, MUC7, MYH6, and SEZ6) were found to be closely related to patient survival. Enrichment analysis showed that the differentially expressed genes mainly enriched in the protein-coupled receptor signaling pathway, extracellular region, G-protein coupled receptor activity, salivary secretion, and regulation of lipolysis in adipocytes. Protein-protein interaction analysis revealed that POSTN and OGN were crucial microenvironments related genes.Tumor microenvironment related genes ADGRG7, CSN3, CST8, KRT81, MUC7, MYH6, and SEZ6 are valuable predictors for HNSCC patient survival. POSTN and OGN are crucial in modulating the microenvironment and tumor biology for HNSCC.
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Fu H, Zhang Y, Chen Y, Chen J, Chen P. CSN1 facilitates proliferation and migration of hepatocellular carcinoma cells by upregulating cyclin A2 expression. Mol Med Rep 2021; 23:46. [PMID: 33200803 PMCID: PMC7705997 DOI: 10.3892/mmr.2020.11684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 10/14/2020] [Indexed: 12/24/2022] Open
Abstract
Constitutive photomorphogenesis 9 signalosome subunit 1 (CSN1) plays an important role in the ubiquitin-proteasome pathway and regulates various cellular processes, such as the cell cycle and DNA repair. The CSN complex consists of eight subunits (CSN1 to CSN8) and regulates the tumorigenesis of a variety of tumor types. However, the exact role of CSN1 in hepatocellular carcinoma (HCC) remains unclear. The present study evaluated the expression and biological effects of CSN1 in HCC tissue samples and cell lines. CSN1 was significantly overexpressed in HCC tissue and cell lines, compared with their normal counterparts. In patients with HCC, elevated CSN1 levels correlated with tumor size, tumor metastasis and tumor stage. Loss‑of‑function assays indicated that CSN1 knockdown inhibited the proliferation and migration HCC cells. In addition, CSN1 promoted the expression of cyclin A2 in a ubiquitination‑independent manner. Lastly, xenograft experiments indicated that CSN1 promoted HCC tumor growth in vivo. The present study suggested that CSN1 inhibition could represent a potential approach for the prevention of HCC progression and metastasis.
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Affiliation(s)
- Hangwei Fu
- Department of Hepatobiliary Surgery, Daping Hospital, Army Medical University, Chongqing 400042, P.R. China
| | - Yida Zhang
- Department of Hepatobiliary Surgery, Daping Hospital, Army Medical University, Chongqing 400042, P.R. China
| | - Yin Chen
- Department of Hepatobiliary Surgery, Daping Hospital, Army Medical University, Chongqing 400042, P.R. China
- Department of Gynecology and Obstetrics, The 958th Hospital, Southwest Hospital, Army Medical University, Chongqing 400020, P.R. China
| | - Junying Chen
- Department of Hepatobiliary Surgery, Daping Hospital, Army Medical University, Chongqing 400042, P.R. China
| | - Ping Chen
- Department of Hepatobiliary Surgery, Daping Hospital, Army Medical University, Chongqing 400042, P.R. China
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Identification of Long Noncoding RNA Biomarkers for Hepatocellular Carcinoma Using Single-Sample Networks. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8579651. [PMID: 33299877 PMCID: PMC7700720 DOI: 10.1155/2020/8579651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/19/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
Objective Many studies have found that long noncoding RNAs (lncRNAs) are differentially expressed in hepatocellular carcinoma (HCC) and closely associated with the occurrence and prognosis of HCC. Since patients with HCC are usually diagnosed in late stages, more effective biomarkers for early diagnosis and prognostic prediction are in urgent need. Methods The RNA-seq data of liver hepatocellular carcinoma (LIHC) were downloaded from The Cancer Genome Atlas (TCGA). Differentially expressed lncRNAs and mRNAs were obtained using the edgeR package. The single-sample networks of the 371 tumor samples were constructed to identify the candidate lncRNA biomarkers. Univariate Cox regression analysis was performed to further select the potential lncRNA biomarkers. By multivariate Cox regression analysis, a 3-lncRNA-based risk score model was established on the training set. Then, the survival prediction ability of the 3-lncRNA-based risk score model was evaluated on the testing set and the entire set. Function enrichment analyses were performed using Metascape. Results Three lncRNAs (RP11-150O12.3, RP11-187E13.1, and RP13-143G15.4) were identified as the potential lncRNA biomarkers for LIHC. The 3-lncRNA-based risk model had a good survival prediction ability for the patients with LIHC. Multivariate Cox regression analysis proved that the 3-lncRNA-based risk score was an independent predictor for the survival prediction of patients with LIHC. Function enrichment analysis indicated that the three lncRNAs may be associated with LIHC via their involvement in many known cancer-associated biological functions. Conclusion This study could provide novel insights to identify lncRNA biomarkers for LIHC at a molecular network level.
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Mou J, Wei L, Liang J, Du W, Pei D. CSN6 promotes the cell migration of breast cancer cells by positively regulating Snail1 stability. Int J Med Sci 2020; 17:2809-2818. [PMID: 33162808 PMCID: PMC7645341 DOI: 10.7150/ijms.50206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/09/2020] [Indexed: 11/11/2022] Open
Abstract
Background: CSN6, a subunit of the highly conserved constitutive photomorphogenesis 9 (COP9) signalosome (CSN), has been reported to be implicated in tumor progression in various kinds of malignant tumors. However, the mechanism underlying CSN6 in the tumor development of breast cancer has not yet been fully elucidated. Methods: CSN6 staining in breast cancer tissues and paracancerous tissues was measured by tissue microarray (TMA) technology. The metastatic effect of CSN6 was measured by cell migration assay. Co-immunoprecipitation study was used to show the interaction between the protein CSN6 and Snail1. Ubiquitination assay was performed to validate whether ubiquitination is involved in the upregulation of Snail1 by CSN6. The impact of CSN6 on tumor metastasis in vivo was analyzed using xenotransplantation experiments in BALB/c mice. Results: Here, we demonstrated that CSN6 expression was dramatically increased in breast cancer tissues compared with paired adjacent cancerous tissues. CSN6 promoted the cell migration and wound healing abilities in breast cancer cell lines. Also we showed that CSN6 associates with Snail1 and enhances Snail1 protein level by inhibiting the ubiquitin-mediated degradation of Snail1. Thus, CSN6 is involved in positively regulating the stability of Snail1. We further proved that CSN6 protein level was positively correlated with the Snail1 expression in xenograft model. Conclusion: These findings provide new insight into applicability of using the CSN6-Snail1 axis as a potential therapeutic target in breast cancer.
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Affiliation(s)
- Jie Mou
- Department of Pathology, Xuzhou Medical University, Xuzhou, China.,Jiangsu Key Laboratory of New drug and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China.,School of Pharmacy, Xuzhou Medical University, Xuzhou, China
| | - Lulu Wei
- Department of Pathology, Xuzhou Medical University, Xuzhou, China.,Center for Translational Medicine and Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Jia Liang
- Department of Pathology, Xuzhou Medical University, Xuzhou, China
| | - Wenqi Du
- Department of Human Anatomy, Xuzhou Medical University, Xuzhou, China
| | - Dongsheng Pei
- Department of Pathology, Xuzhou Medical University, Xuzhou, China
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12
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Zhu Z, Hong Y, Zhang F, An L, Yang Q, Huang X, Xu Q. Knockdown of COPS3 inhibits the progress of prostate cancer through reducing phosphorylated p38 MAPK expression and impairs the epithelial-mesenchymal transition process. Prostate 2019; 79:1823-1831. [PMID: 31509289 DOI: 10.1002/pros.23907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 08/29/2019] [Indexed: 01/27/2023]
Abstract
BACKGROUND The amplification of gene COPS3 is closely related to the development of osteosarcoma and hepatocellular carcinoma. However, the effects of COPS3 on prostate cancer (PCa) are poorly understood. METHODS In this study, the protein expression of COPS3 in PCa tissues, adjacent normal tissues, and bone metastasis tissues of PCa was analyzed by immunohistochemistry. Furthermore, cell proliferation, colony formation, migration, and invasion assay were performed in 22rv1 and PC-3 cells after knocking down COPS3 by small interfering RNAs. Furthermore, we performed western blot analysis to explore the potential mechanisms underlying it. RESULTS This study found that the overall survival of the COPS3 high-expression group was significantly shorter than the low-expression group. This study discovered that the protein expression of COPS3 in PCa tissues was higher than that in the matched nontumor prostate tissues. In addition, tissues from bone metastasis of PCa had a high percentage of overexpressing COPS3. After knockdown of the COPS3 gene in 22rv1 and PC3 cells, two classic human PCa cell lines which had a high level of COPS3, the abilities of migration, invasion, and proliferation were inhibited. Finally, protein levels of phosphorylated P38 mitogen-activated protein kinase (MAPK) and N-cadherin were significantly decreased after knocking down the expression of COPS3, and the protein levels of E-cadherin were significantly increased. CONCLUSIONS In conclusion, COPS3 may be closely related to the progress of PCa. Knockdown of COPS3 inhibited the progress of PCa through reducing the levels of phosphorylated P38 MAPK and impaired the epithelial-mesenchymal transition process.
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Affiliation(s)
- Zhenjie Zhu
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
| | - Yang Hong
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
| | - Fengshi Zhang
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
| | - Lizhe An
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
| | - Qingya Yang
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, China
| | - Xiaobo Huang
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
| | - Qingquan Xu
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
- Peking University Applied Lithotripsy Institute, Beijing, China
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13
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Chung D, Salsman J, Dellaire G. Inhibition of neddylation induces mitotic defects and alters MKLP1 accumulation at the midbody during cytokinesis. Cell Cycle 2019; 18:1135-1153. [PMID: 31057046 PMCID: PMC6592236 DOI: 10.1080/15384101.2019.1612696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The cullin-RING E3 ubiquitin ligases (CRLs) play crucial roles in modulating the stability of proteins in the cell and are, in turn, regulated by post-translational modification by the ubiquitin-like (Ubl) protein NEDD8. This process, termed neddylation, is reversible through the action of the COP9 signalosome (CSN); a multi-subunit metalloprotease conserved among eukaryotes that plays direct or indirect roles in DNA repair, cell signaling and cell cycle regulation in part through modulating the activity of the CRLs. Previously, inhibition of CRL neddylation by MLN4924, a small molecule inhibitor of the NEDD8-activating enzyme 1 (NAE1), was shown to induce interphase cell cycle arrest and cell death. Using fixed and living cell microscopy, we re-evaluated the cell cycle effects of inhibition of neddylation by MLN4924 in both asynchronous and mitotic cell populations. Consistent with previous studies, treatment of asynchronous cells with MLN4924 increased CDT1 expression levels, induced G2 arrest and increased nuclear size. However, in synchronized cells treated in mitosis, mitotic defects were observed including lagging chromosomes and binucleated daughter cells. Consistent with neddylation and deneddylation playing a role in cytokinesis, NEDD8, as well as subunits of the CSN, could be localized at the midbody and cleavage furrow. Finally, treatment of mitotic cells with MLN4924 induced the premature accumulation of MKLP1 at the cleavage furrow, a key regulator of cytokinesis, which was concomitant with increased abscission delay and failure. Thus, these studies uncover an uncharacterized mitotic effect of MLN4924 on MKLP1 accumulation at the midbody and support a role for neddylation during cytokinesis. Abbreviations: CSN, COP9 Signalosome; MKLP1, mitotic kinesin-like protein 1; NEDD8, Neural precursor cell Expressed, Developmentally Down-regulated 8.
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Affiliation(s)
- Dudley Chung
- a Department of Pathology , Dalhousie University , Halifax , Canada
| | - Jayme Salsman
- a Department of Pathology , Dalhousie University , Halifax , Canada
| | - Graham Dellaire
- a Department of Pathology , Dalhousie University , Halifax , Canada.,b Department of Biochemistry & Molecular Biology , Dalhousie University , Halifax , Canada.,c Beatrice Hunter Cancer Research Institute , Halifax , Canada
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14
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Zhang F, Yan T, Guo W, Sun K, Wang S, Bao X, Liu K, Zheng B, Zhang H, Ren T. Novel oncogene COPS3 interacts with Beclin1 and Raf-1 to regulate metastasis of osteosarcoma through autophagy. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:135. [PMID: 29970115 PMCID: PMC6029018 DOI: 10.1186/s13046-018-0791-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/13/2018] [Indexed: 01/02/2023]
Abstract
Background Expression of COP9 signalosome subunit 3 (COPS3), an oncogene overexpressed in osteosarcoma, has been demonstrated to be significantly correlated with tumor metastasis. However, the underlying mechanism by which COPS3 promotes metastasis of osteosarcoma and its role in autophagy remain unknown. Methods The expression of COPS3 was detected in primary osteosarcoma tissues and matching lung metastasis tissues by immunohistochemistry (IHC). The effect of COPS3 on the metastasis of osteosarcoma cells was investigated by transwell, wound healing assays and animal studies. Indicated proteins was analyzed by western blotting when COPS3 was knockdown or overexpressed. The COPS3 Interacting protein was determined by immunoprecipitation assay. The relationship between COPS3 and autophagy was detected by western blotting and immunofluorescence. Results We found that knockdown of COPS3 significantly reduced the lung metastasis of osteosarcoma cells in a mouse model, coinciding with downregulation of mitogen-activated protein kinase (MEK) and extracellular signal-regulated kinase (ERK) signaling. The silencing of COPS3 also inhibited the epithelial–mesenchymal transition (EMT) through the 90 kDa ribosomal S6 kinases (RSK), a family of signal transduction proteins downstream of MEK/ERK. Reciprocal immunoprecipitation assays revealed that COPS3 directly interacts with Raf-1, an upstream regulator of MEK/ERK. Surprisingly, Beclin1, an important autophagic protein, appeared in the COPS3-immunoprecipitates, along with the autophagic markers LC3-I and LC3-II. Loss of COPS3 completely inhibited H2O2-induced autophagic flux and reduced Beclin1 expression. Additionally, autophagy inhibitor or silencing of Beclin1 both decreased cell metastasis. Conclusions Taken together, these data reveal a novel function of COPS3 in the regulation of autophagy and highlight the relationship between autophagy and metastasis in osteosarcoma cells. Electronic supplementary material The online version of this article (10.1186/s13046-018-0791-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fan Zhang
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Taiqiang Yan
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China. .,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China.
| | - Wei Guo
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Kunkun Sun
- Department of Pathology, Peking University People's Hospital, Beijing, 100044, China
| | - Shidong Wang
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Xing Bao
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Kuisheng Liu
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Bingxin Zheng
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Hongliang Zhang
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
| | - Tingting Ren
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, China.,Beijing Key Laboratory of Musculoskeletal Tumor, Beijing, 100044, China
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15
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Hong Y, Huang X, An L, Ye H, Ma K, Zhang F, Xu Q. Overexpression of COPS3 promotes clear cell renal cell carcinoma progression via regulation of Phospho-AKT(Thr308), Cyclin D1 and Caspase-3. Exp Cell Res 2018; 365:163-170. [PMID: 29477618 DOI: 10.1016/j.yexcr.2018.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 01/24/2018] [Accepted: 02/22/2018] [Indexed: 02/07/2023]
Abstract
The third subunit of the COP9 signalosome (COPS3) is associated with cell proliferation and tumorigenesis process in cancer. The present study showed that the expression level of COPS3 was upregulated in malignant cell lines and COPS3 overexpression was related with clinical stage, T stage, historical grade. Kaplan-Meier survival curves showed that COPS3 may function as a prognostic factor for overall survival. CCK-8 and colony formation assays revealed that knockdown of COPS3 in ACHN and 786-O significantly impacted proliferation in vitro. In addition, flow cytometry showed that inhibition of COPS3 induced G0/G1 arrest and promoted apoptosis. COPS3 may promote kidney cancer progression by altering Phospho-AKT(Thr308), Cyclin D1 and Caspase-3 expression. Collectively, Our findings suggest that COPS3 may be a new potential target of ccRCC.
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Affiliation(s)
- Yang Hong
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Xiaobo Huang
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Lizhe An
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Haiyun Ye
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Kai Ma
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Fengshi Zhang
- The Department of Urology, Peking University People's Hospital, Beijing, China.
| | - Qingquan Xu
- The Department of Urology, Peking University People's Hospital, Beijing, China.
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16
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Ba MA, Surina J, Singer CA, Valencik ML. Knockdown of subunit 3 of the COP9 signalosome inhibits C2C12 myoblast differentiation via NF-KappaB signaling pathway. BMC Pharmacol Toxicol 2017. [PMID: 28623958 PMCID: PMC5474012 DOI: 10.1186/s40360-017-0154-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background The COP9 signalosome (CSN) is a conserved protein complex composed of 8 subunits designated CSN1-CSN8. CSN3 represents the third subunit of the CSN and maintains the integrity of the complex. CSN3 binds to the striated muscle-specific β1D integrin tail, and its subcellular localization is altered in differentiated skeletal muscle cells. However, the role of CSN3 in skeletal muscle differentiation is unknown. The main goal of this study was to identify whether CSN3 participates in myoblast differentiation and the signalling mechanisms involved using C2C12 cells as a skeletal muscle cell model. Methods Small-hairpin (shRNA) was used to knockdown CSN3 in C2C12 cells. Differentiation was evaluated by immunostaining and confocal microscopy. Markers of differentiation, NF-κB signaling and CSN subunits expression, were assessed by immunoblotting and/or immunostaining. Cell proliferation was analysed by cell counting, flow cytometry and a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Data were analyzed by one or two-way analysis of variance (ANOVA) followed by post-hoc testing. Results Transduction of C2C12 cells with two distinct CSN3 shRNAs led to the production of two cells lines expressing 7% of CSN3 protein (shCSN3-Low) and 43% of CSN3 protein (CSN3-Med) compared to controls. Knockdown of CSN3 was accompanied by destabilization of several CSN subunits and increased nuclear NF-κB localization. shCSN3-Med cells expressed less myogenin and formed shorter and thinner myotubes. In contrast, the shCSN3-Low cells expressed higher levels of myogenin prior and during the differentiation and remained mononucleated throughout the differentiation period. Both CSN3 knockdown cell lines failed to express sarcomeric myosin heavy chain (MHC) protein during differentiation. The fusion index was significantly higher in control cells than in shCSN3-Med cells, whereas shCSN3-Low cells showed no cell fusion. Interestingly, CSN3 knockdown cells exhibited a significantly slower growth rate relative to the control cells. Cell cycle analysis revealed that CSN3 knockdowns delayed in S phase and had increased levels of nuclear p21/Cip1 and p27/Kip1. Conclusions This study clarifies the first step toward unrevealing the CSN3/CSN-mediated pathways that controls C2C12 differentiation and proliferation. Further in vivo characterization of CSN/CSN3 may lead to the discovery of novel therapeutic target of skeletal muscle diseases such as muscular dystrophies.
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Affiliation(s)
- Mariam A Ba
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV, USA.
| | - Jeffrey Surina
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV, USA
| | - Cherie A Singer
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV, USA
| | - Maria L Valencik
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV, USA
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17
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Pang J, Yan X, Cao H, Qian L, He H, Tian H, Han F, Wang G, Chen X, Zhao Y, Hu JF, Cui J. Knockdown of COPS3 Inhibits Lung Cancer Tumor Growth in Nude Mice by Blocking Cell Cycle Progression. J Cancer 2017; 8:1129-1136. [PMID: 28607586 PMCID: PMC5463426 DOI: 10.7150/jca.16201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 09/18/2016] [Indexed: 12/13/2022] Open
Abstract
COPS3 encodes the third subunit of the COP9 signalosome and its aberrant expression is associated with many RITE ("Region of Increased Tumor Expression") genes in lung cancer tissues. To elucidate the specific role of COPS3 in lung cancer, we examined its expression in lung cancer tissues by immunohistochemical staining. We found that COPS3 was overexpressed in most of the lung cancer samples examined, particularly in small cell carcinoma and squamous cell carcinoma. The expression of COPS3 protein was positively correlated with the level of Ki-67 cell proliferation index (p=0.001) and negatively related to the degree of tumor differentiation (p=0.012). In a xenograft tumor model in nude mice, shRNA-knockdown of COPS3 significantly reduced tumor growth. In lung adenocarcinoma A549 cells, shRNA-knockdown of COPS3 induced cell cycle arrest at G0/G1 phase by upregulating the cell cycle regulator protein P21 and downregulating cyclin B1 and CDK4. These data suggest that COPS3 may promote tumor growth by regulating cell-cycle associated proteins.
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Affiliation(s)
- Jianan Pang
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Xu Yan
- Pathological diagnostic Center, the First Hospital of Jilin University, No.71.Xinmin Street, Changchun, 130021, China
| | - He Cao
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Lei Qian
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Hua He
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Huimin Tian
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Fujun Han
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Guanjun Wang
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Xiao Chen
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Yuguang Zhao
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
| | - Ji-Fan Hu
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
- Stanford University Medical School, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
| | - Jiuwei Cui
- Cancer Center, the First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021, China
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18
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Li P, Xie L, Gu Y, Li J, Xie J. Roles of Multifunctional COP9 Signalosome Complex in Cell Fate and Implications for Drug Discovery. J Cell Physiol 2017; 232:1246-1253. [PMID: 27869306 DOI: 10.1002/jcp.25696] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 11/18/2016] [Indexed: 01/24/2023]
Abstract
The eight subunits containing COP9 signalosome (CSN) complex, is highly conserved among eukaryotes. CSN, identified as a negative regulator of photomorphogenesis, has also been demonstrated to be important in proteolysis, cellular signal transduction and cell cycle regulation in various eukaryotic organisms. This review mainly summarizes the roles of CSN in cell cycle regulation, signal transduction and apoptosis, and its potential as diagnostic biomarkers, drug targets for cancer and infectious diseases. J. Cell. Physiol. 232: 1246-1253, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ping Li
- Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Beibei, Chongqing, China
| | - Longxiang Xie
- Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Beibei, Chongqing, China
| | - Yinzhong Gu
- Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Beibei, Chongqing, China
| | - Jiang Li
- Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Beibei, Chongqing, China
| | - Jianping Xie
- Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Beibei, Chongqing, China
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Suppression of CSN5 promotes the apoptosis of gastric cancer cells through regulating p53-related apoptotic pathways. Bioorg Med Chem Lett 2015; 25:2897-901. [DOI: 10.1016/j.bmcl.2015.05.057] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 05/04/2015] [Accepted: 05/22/2015] [Indexed: 02/04/2023]
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20
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Pan Y, Yang H, Claret FX. Emerging roles of Jab1/CSN5 in DNA damage response, DNA repair, and cancer. Cancer Biol Ther 2014; 15:256-62. [PMID: 24495954 DOI: 10.4161/cbt.27823] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Jab1/CSN5 is a multifunctional protein that plays an important role in integrin signaling, cell proliferation, apoptosis, and the regulation of genomic instability and DNA repair. Dysregulation of Jab1/CSN5 activity has been shown to contribute to oncogenesis by functionally inactivating several key negative regulatory proteins and tumor suppressors. In this review, we discuss our current understanding of the relationship between Jab1/CSN5 and DNA damage and summarize recent findings regarding opportunities for and challenges to therapeutic intervention.
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Affiliation(s)
- Yunbao Pan
- Department of Systems Biology; The University of Texas MD Anderson Cancer Center; Houston, TX USA; Department of Pathophysiology; Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou, Guangdong, PR China; Breast Tumor Center; Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guangzhou, Guangdong, PR China
| | - Huiling Yang
- Department of Pathophysiology; Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou, Guangdong, PR China
| | - Francois X Claret
- Department of Systems Biology; The University of Texas MD Anderson Cancer Center; Houston, TX USA; Experimental Therapeutic Academic Program and Cancer Biology Program; The University of Texas Graduate School of Biomedical Sciences at Houston; Houston, TX USA
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