51
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Yao M, Wang L, Leung PSC, Li Y, Liu S, Wang L, Guo X, Zhou G, Yan Y, Guan G, Chen X, Bowlus CL, Liu T, Jia J, Gershwin ME, Ma X, Zhao J, Lu F. The Clinical Significance of GP73 in Immunologically Mediated Chronic Liver Diseases: Experimental Data and Literature Review. Clin Rev Allergy Immunol 2018; 54:282-294. [PMID: 29256057 DOI: 10.1007/s12016-017-8655-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
There is significant void in establishing validated non-invasive surrogate biomarkers of liver fibrosis/cirrhosis in chronic liver diseases (CLD). Golgi protein 73 (GP73) has been suggested as a potential serum marker for the diagnosis of hepatocellular carcinoma (HCC). However, significant background of cirrhosis could have accounted for the elevation of serum GP73 in HCC. In this study, we have taken advantage of a well-defined extensive cohort of 3044 patients with either compensated cirrhosis (n = 1247), decompensated cirrhosis (n = 841) or pre-cirrhotic CLD (n = 956) and our ability to quantify serum GP73 to define the potential of serum GP73 as a biomarker of liver cirrhosis/fibrosis in CLD. The diagnostic value of GP73 was compared with aspartate aminotransferase-to-platelet ratio index (APRI), fibrosis index based on four factors (FIB-4) and liver stiffness measurement (LSM). Immunohistochemical analysis was performed to measure hepatic GP73 expression. Receiver operating characteristic curve analysis demonstrated that serum GP73 had a good diagnostic potential for compensated cirrhosis regardless of etiology. The diagnostic performance of GP73 is better than APRI, FIB-4 and similar with LSM, especially in patients with severe inflammation, steatosis and cholestasis. Notably, in patients of autoimmune liver diseases, non-alcoholic fatty liver disease and viral hepatitis, serum GP73 also exhibited diagnostic value for advanced fibrosis as well as cirrhosis. Furthermore, there is also a gradual increase in GP73 expression with disease progression from mild fibrosis to cirrhosis. In conclusion, GP73 is an effective and reliable serological marker for the diagnosis of advanced fibrosis and prediction of appearance of cirrhosis.
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Affiliation(s)
- Mingjie Yao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Leijie Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Patrick S C Leung
- Division of Rheumatology/Allergy and Clinical Immunology, School of Medicine, The University of California, Davis, CA, 95616, USA.
| | - Yanmei Li
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, 200001, Shanghai, People's Republic of China
| | - Shuhong Liu
- Department of Pathology and Hepatology, Beijing 302 Hospital, 100039, Beijing, People's Republic of China
| | - Lu Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Xiaodong Guo
- Department of Pathology and Hepatology, Beijing 302 Hospital, 100039, Beijing, People's Republic of China
| | - Guangde Zhou
- Department of Pathology and Hepatology, Beijing 302 Hospital, 100039, Beijing, People's Republic of China
| | - Ying Yan
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Guiwen Guan
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Xiangmei Chen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China
| | - Christopher L Bowlus
- Division of Gastroenterology and Hepatology, School of Medicine, The University of California, Davis, CA, 95616, USA
| | - Tianhui Liu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis & National Clinical Research Center of Digestive Diseases, 100050, Beijing, People's Republic of China
| | - Jidong Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis & National Clinical Research Center of Digestive Diseases, 100050, Beijing, People's Republic of China
| | - M Eric Gershwin
- Division of Rheumatology/Allergy and Clinical Immunology, School of Medicine, The University of California, Davis, CA, 95616, USA
| | - Xiong Ma
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, 200001, Shanghai, People's Republic of China.
| | - Jingmin Zhao
- Department of Pathology and Hepatology, Beijing 302 Hospital, 100039, Beijing, People's Republic of China.
| | - Fengmin Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, 100191, Beijing, People's Republic of China.
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TMEM165, a Golgi transmembrane protein, is a novel marker for hepatocellular carcinoma and its depletion impairs invasion activity. Oncol Rep 2018; 40:1297-1306. [PMID: 30015898 PMCID: PMC6072395 DOI: 10.3892/or.2018.6565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 06/26/2018] [Indexed: 01/13/2023] Open
Abstract
Transmembrane protein 165 (TMEM165), a Golgi protein, functions in ion homeostasis and vesicular trafficking in the Golgi apparatus. While mutations in TMEM165 are known to cause human 'congenital disorders of glycosylation', a recessive autosomal metabolic disease, the potential association of this protein with human cancer development has not been explored to date. In the present study, we revealed that TMEM165 is overexpressed in HCC and its depletion weakens the invasive activity of cancer cells through suppression of matrix metalloproteinase‑2 (MMP‑2) expression. Levels of TMEM165 mRNA and protein were clearly increased in HCC patient tissues and cell cultures. Quantitative real‑time RT‑PCR analysis of fresh HCC tissues (n=88) revealed association of TMEM165 overexpression with more frequent macroscopic vascular invasion, microscopic serosal invasion and higher α‑fetoprotein levels. Notably, depletion of TMEM165 led to a marked decrease in the invasive activity of two different HCC cell types, Huh7 and SNU475, accompanied by downregulation of MMP‑2. Our collective findings clearly indicated that TMEM165 contributed to the progression of HCC by promoting invasive activity, supporting its utility as a novel biomarker and therapeutic target for cancer.
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53
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Jiang K, Li W, Zhang Q, Yan G, Guo K, Zhang S, Liu Y. GP73 N-glycosylation at Asn144 reduces hepatocellular carcinoma cell motility and invasiveness. Oncotarget 2018; 7:23530-41. [PMID: 26993603 PMCID: PMC5029645 DOI: 10.18632/oncotarget.8120] [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: 10/13/2015] [Accepted: 02/28/2016] [Indexed: 12/12/2022] Open
Abstract
Golgi Protein 73 (GP73) is a potential liver disease glycobiomarker warranting comprehensive analyses of its glycan structure and glycosylation function. In this study, we used mass spectrometry to identify glycosylation sites and the glycan structure, high-throughput lectin microarray to provide rapid and sensitive profiling of glycoconjugates, and site-directed mutagenesis to clarify the impact of glycans on target glycoproteins in vivo. We identified three GP73 N-glycosylation sites: Asn109, Asn144 and Asn398. We found five glycoforms on Asn144, including biantennary, triantennary and fucosylated glycans. Removal of N-glycans at Asn144 enhanced the motility and invasiveness of hepatocellular carcinoma cells, possibly due to inhibition of cell adhesion related to the changes of cell membrane glycosylation. This study increases our understanding of the functional relevance of GP73 glycosylation and suggests that Asn144-deleted GP73 can influence the progression and metastasis of hepatocellular carcinoma.
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Affiliation(s)
- Kai Jiang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China.,Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Wei Li
- Cancer Research Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Qinle Zhang
- Cancer Research Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Guoquan Yan
- Cancer Research Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Kun Guo
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China
| | - Shu Zhang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China
| | - Yinkun Liu
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China.,Cancer Research Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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54
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Yang Y, Liu Q, Li Z, Zhang R, Jia C, Yang Z, Zhao H, Ya S, Mao R, Ailijiang T, Bao Y, Zhang H. GP73 promotes epithelial–mesenchymal transition and invasion partly by activating TGF-β1/Smad2 signaling in hepatocellular carcinoma. Carcinogenesis 2018; 39:900-910. [PMID: 29365054 DOI: 10.1093/carcin/bgy010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 01/12/2018] [Indexed: 12/14/2022] Open
Affiliation(s)
- Ying Yang
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Qiang Liu
- Department of Urology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhipeng Li
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ruili Zhang
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Chunli Jia
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhifang Yang
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Huarong Zhao
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Sha Ya
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Rui Mao
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Tuerxun Ailijiang
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yongxing Bao
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hua Zhang
- Department of Cancer Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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55
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Yang HJ, Liu GL, Liu B, Liu T. GP73 promotes invasion and metastasis of bladder cancer by regulating the epithelial-mesenchymal transition through the TGF-β1/Smad2 signalling pathway. J Cell Mol Med 2018; 22:1650-1665. [PMID: 29349903 PMCID: PMC5824402 DOI: 10.1111/jcmm.13442] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 08/16/2017] [Indexed: 12/11/2022] Open
Abstract
This study investigated the effects of Golgi membrane protein 73 (GP73) on the epithelial-mesenchymal transition (EMT) and on bladder cancer cell invasion and metastasis through the TGF-β1/Smad2 signalling pathway. Paired bladder cancer and adjacent tissue samples (102) and normal bladder tissue samples (106) were obtained. Bladder cancer cell lines (T24, 5637, RT4, 253J and J82) were selected and assigned to blank, negative control (NC), TGF-β, thrombospondin-1 (TSP-1), TGF-β1+ TSP-1, GP73-siRNA-1, GP73-siRNA-2, GP73-siRNA-1+ TSP-1, GP73-siRNA-1+ pcDNA-GP73, WT1-siRNA and WT1-siRNA + GP73-siRNA-1 groups. Expressions of GP73, TGF-β1, Smad2, p-Smad2, E-cadherin and vimentin were detected using RT-qPCR and Western blotting. Cell proliferation, migration and invasion were determined using MTT assay, scratch testing and Transwell assay, respectively. Compared with the blank and NC groups, levels of GP73, TGF-β1, Smad2, p-Smad2, N-cadherin and vimentin decreased, and levels of WT1 and E-cadherin increased in the GP73-siRNA-1 and GP73-siRNA-2 groups, while the opposite results were observed in the WT1 siRNA, TGF-β, TSP-1 and TGF-β + TSP-1 groups. Cell proliferation, migration and invasion notably decreased in the GP73-siRNA-1 and GP73-siRNA-2 groups in comparison with the blank and NC groups, while in the WT1 siRNA, TGF-β, TSP-1 and TGF-β + TSP-1 groups, cell migration, invasion and proliferation showed the reduction after the EMT. These results suggest that GP73 promotes bladder cancer invasion and metastasis by inducing the EMT through down-regulating WT1 levels and activating the TGF-β1/Smad2 signalling pathway.
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Affiliation(s)
- Han-Jie Yang
- Department of Urology, Pingxiang Affiliated, Southern Medical University, Pingxiang, China
| | - Ge-Liang Liu
- Department of Urology, Pingxiang Affiliated, Southern Medical University, Pingxiang, China
| | - Bo Liu
- Department of General Surgery, Xiangya 2nd Hospital of Central South University, Changsha, China
| | - Tian Liu
- Department of General Surgery, Xiangya 2nd Hospital of Central South University, Changsha, China
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56
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Weiskirchen R, Tacke F. Combining GP73 with liver stiffness measurements: A proof-of-concept for non-invasive fibrosis assessment in antiviral-naïve HBV patients. Liver Int 2017; 37:1605-1607. [PMID: 29065256 DOI: 10.1111/liv.13563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital RWTH Aachen, Aachen, Germany
| | - Frank Tacke
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
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57
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Dong M, Chen ZH, Li X, Li XY, Wen JY, Lin Q, Ma XK, Wei L, Chen J, Ruan DY, Lin ZX, Wang TT, Wu DH, Wu XY. Serum Golgi protein 73 is a prognostic rather than diagnostic marker in hepatocellular carcinoma. Oncol Lett 2017; 14:6277-6284. [PMID: 29113278 DOI: 10.3892/ol.2017.6938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 07/03/2017] [Indexed: 12/19/2022] Open
Abstract
Serum Golgi protein 73 (sGP73) is a candidate diagnostic biomarker for hepatocellular carcinoma (HCC). However, current evidence of its diagnostic value is conflicting, primarily due to the small sample sizes of previous studies, and its prognostic role in HCC also remains unclear. In the present study, sGP73 levels in 462 patients with HCC, 186 patients with liver cirrhosis, and 83 healthy controls were evaluated using ELISA, and it was identified that the median sGP73 levels were significantly higher in the HCC (18.7 ng/ml) and liver cirrhosis (18.5 ng/ml) patients than in the healthy controls (0 ng/ml; both P<0.001); however, the levels did not significantly differ between the HCC and liver cirrhosis groups (P=0.632). sGP73 had an inferior sensitivity and specificity for HCC diagnosis (27.79 and 77.96%, respectively) compared with α-fetoprotein (57.36 and 90.96%, respectively; P<0.001). In the HCC group, a high level of sGP73 was associated with aggressive clinicopathological features and independently predicted poor overall survival (OS) time (P<0.001). Additionally, in patients with resectable HCC, a high level of sGP73 was associated with significantly decreased disease-free survival (P<0.001) and OS (P=0.039) times compared with a low level of sGP73. This study demonstrated that sGP73 is unsuitable as a diagnostic marker for the early detection of HCC; however, it is an independent negative prognostic marker, providing a novel risk stratification factor and a potential therapeutic molecular target for HCC.
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Affiliation(s)
- Min Dong
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Zhan-Hong Chen
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China.,Department of Medical Oncology of Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, P.R. China
| | - Xing Li
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Xiao-Yun Li
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China.,Department of Medical Oncology, The First Affiliated Hospital, Henan University, Kaifeng, Henan 475001, P.R. China
| | - Jing-Yun Wen
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Qu Lin
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Xiao-Kun Ma
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Li Wei
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Jie Chen
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Dan-Yun Ruan
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Ze-Xiao Lin
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Tian-Tian Wang
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Dong-Hao Wu
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Xiang-Yuan Wu
- Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, P.R. China
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58
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Zhao J, Xu T, Wang F, Cai W, Chen L. miR-493-5p suppresses hepatocellular carcinoma cell proliferation through targeting GP73. Biomed Pharmacother 2017; 90:744-751. [PMID: 28419971 DOI: 10.1016/j.biopha.2017.04.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/02/2017] [Accepted: 04/10/2017] [Indexed: 02/07/2023] Open
Abstract
Aberrant expression of miRNAs has been documented to play critical roles in the development and progression of hepatocellular carcinoma (HCC). However, the expression pattern, functional roles and regulatory mechanism of miR-493-5p in HCC have not been addressed. Herein, we found that miR-493-5p was significantly downregulated in HCC tissues and was tightly associated with tumor size, tumor differentiation grade and TNM stage of HCC patients. Overexpression of miR-493-5p inhibited HCC cell proliferation, arrested cell cycle in G0/G1 phase and induced cell apoptosis. Bioinformatical analysis and luciferase reporter assay further proved that Golgiprotein73 (GP73), an oncogene which was generally overexpressed in HCC, acted as a novel target of miR-493-5p. MiR-493-5p could inhibit GP73 both mRNA and protein expression. Moreover, overexpression of GP73 could reverse the inhibitory effects of miR-493-5p mediated HCC cell proliferation. In addition, upregulated GP73 in HCC tissues was inversely correlated with the miR-493-5p expression levels in the HCC tissues. Collectively, our present study demonstrates that miR-493-5p is downregulated in HCC and it can suppress the proliferation of HCC cells, partly at least, via directly targeting GP73. Besides, this study provides a novel insight into the mechanism of hepatocarcinogenesis and a promising blueprint for miR-493-5p-GP73 axis-oriented treatment of HCC.
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Affiliation(s)
- Jinli Zhao
- Department of Medical Imaging, Affiliated Hospital of Nantong University, Jiangsu, 226001, China
| | - Tongsheng Xu
- Department of Pharmacy, The People's Hospital of Hai
tm)an County, Jiangsu, 226600, China
| | - Feng Wang
- Department of Clinical Laboratory, Affiliated Hospital of Nantong University, Jiangsu, 226001, China.
| | - Weihua Cai
- Department of Gastroenterology and Clinical Laboratory, Nantong Third Hospital Affiliated to Nantong University, Jiangsu, 226006, China
| | - Lin Chen
- Department of Gastroenterology and Clinical Laboratory, Nantong Third Hospital Affiliated to Nantong University, Jiangsu, 226006, China.
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Zhang X, Zhu C, Wang T, Jiang H, Ren Y, Zhang Q, Wu K, Liu F, Liu Y, Wu J. GP73 represses host innate immune response to promote virus replication by facilitating MAVS and TRAF6 degradation. PLoS Pathog 2017; 13:e1006321. [PMID: 28394926 PMCID: PMC5398727 DOI: 10.1371/journal.ppat.1006321] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 04/20/2017] [Accepted: 03/28/2017] [Indexed: 12/31/2022] Open
Abstract
Hepatitis C virus (HCV) infection is a leading cause of chronic liver diseases and hepatocellular carcinoma (HCC) and Golgi protein 73 (GP73) is a serum biomarker for liver diseases and HCC. However, the mechanism underlying GP73 regulates HCV infection is largely unknown. Here, we revealed that GP73 acts as a novel negative regulator of host innate immunity to facilitate HCV infection. GP73 expression is activated and correlated with interferon-beta (IFN-β) production during HCV infection in patients’ serum, primary human hepatocytes (PHHs) and human hepatoma cells through mitochondrial antiviral signaling protein (MAVS), TNF receptor-associated factor 6 (TRAF6) and mitogen-activated protein kinase kinase/extracellular regulated protein kinase (MEK/ERK) pathway. Detailed studies revealed that HCV infection activates MAVS that in turn recruits TRAF6 via TRAF-interacting-motifs (TIMs), and TRAF6 subsequently directly recruits GP73 to MAVS via coiled-coil domain. After binding with MAVS and TRAF6, GP73 promotes MAVS and TRAF6 degradation through proteasome-dependent pathway. Moreover, GP73 attenuates IFN-β promoter, IFN-stimulated response element (ISRE) and nuclear factor κB (NF-κB) promoter and down-regulates IFN-β, IFN-λ1, interleukin-6 (IL-6) and IFN-stimulated gene 56 (ISG56), leading to the repression of host innate immunity. Finally, knock-down of GP73 down-regulates HCV infection and replication in Huh7-MAVSR cells and primary human hepatocytes (PHHs), but such repression is rescued by GP73m4 (a mutant GP73 resists to GP73-shRNA#4) in Huh7-MAVSR cells, suggesting that GP73 facilitates HCV infection. Taken together, we demonstrated that GP73 acts as a negative regulator of innate immunity to facilitate HCV infection by interacting with MAVS/TRAF6 and promoting MAVS/TRAF6 degradation. This study provides new insights into the mechanism of HCV infection and pathogenesis, and suggests that GP73 is a new potential antiviral target in the prevention and treatment of HCV associated diseases. Golgi protein 73 (GP73) is a serum biomarker for liver diseases and hepatocellular carcinoma (HCC). In this study, the authors reveal that GP73 acts as a novel negative regulator of host innate immunity to facilitate hepatitis C virus (HCV) infection. GP73 expression is activated and correlated with IFN-β production during HCV infection in patients’ serum, primary human hepatocytes (PHHs) and human hepatoma cells through mitochondrial antiviral signaling protein (MAVS), TNF receptor-associated factor 6 (TRAF6) and MEK/ERK pathway. They further demonstrate that during viral infection, MAVS recruits TRAF6 that subsequently directly binds with GP73. After binding with MAVS and TRAF6, GP73 promotes MAVS and TRAF6 degradation. Moreover, GP73 attenuates IFN-β promoter, IFN-stimulated response element (ISRE) and NF-κB promoter and down-regulates IFN-β, IFN-λ1, interleukin-6 (IL-6) and IFN-stimulated gene 56 (ISG56), leading to the repression of host innate immunity and the facilitation of virus infection. These results reveal a novel mechanism by which GP73 acts as a novel negative regulator of host innate immunity to facilitate virus infection and also provide new insights into the therapeutic design of anti-HCV drugs.
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Affiliation(s)
- Xuewu Zhang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Chengliang Zhu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Tianci Wang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Hui Jiang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Yahui Ren
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Qi Zhang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Kailang Wu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
| | - Fang Liu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
- * E-mail: (JW); (YL); (FL)
| | - Yingle Liu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
- * E-mail: (JW); (YL); (FL)
| | - Jianguo Wu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, P. R. China
- * E-mail: (JW); (YL); (FL)
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60
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Golgi protein 73 activation of MMP-13 promotes hepatocellular carcinoma cell invasion. Oncotarget 2016; 6:33523-33. [PMID: 26378022 PMCID: PMC4741783 DOI: 10.18632/oncotarget.5590] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 08/23/2015] [Indexed: 12/19/2022] Open
Abstract
Golgi Protein 73 (GP73) is a serum biomarker for hepatocellular carcinoma (HCC), however its role in HCC is not clear. We report that GP73 promotes cell invasion, the hallmark of malignancy, through the upregulation of matrix metalloproteinase-13 (MMP-13). GP73 enhances MMP-13 expression through cAMP responsive element binding protein (CREB)-mediated transcription activation. Levels of GP73 and MMP-13 are increased and positively correlated in human HCC tissues. Augmented MMP-13 potentiates HCC cell metastasis. Thus, the GP73-CREB-MMP-13 axis potentiates cancer cell invasion and may be a target for HCC treatment.
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Huang X, Zeng Y, Wang X, Ma X, Li Q, Li N, Su H, Huang W. FXR blocks the growth of liver cancer cells through inhibiting mTOR-s6K pathway. Biochem Biophys Res Commun 2016; 474:351-356. [DOI: 10.1016/j.bbrc.2016.04.106] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 04/20/2016] [Indexed: 12/29/2022]
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