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Tong Z, Zhang Y, Guo P, Wang W, Chen Q, Jin J, Liu S, Yu C, Mo P, Zhang L, Huang J. Steroid receptor coactivator 1 promotes human hepatocellular carcinoma invasiveness through enhancing MMP-9. J Cell Mol Med 2024; 28:e18171. [PMID: 38506084 PMCID: PMC10951881 DOI: 10.1111/jcmm.18171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 01/23/2024] [Accepted: 01/31/2024] [Indexed: 03/21/2024] Open
Abstract
SRC-1 functions as a transcriptional coactivator for steroid receptors and various transcriptional factors. Notably, SRC-1 has been implicated in oncogenic roles in multiple cancers, including breast cancer and prostate cancer. Previous investigations from our laboratory have established the high expression of SRC-1 in human HCC specimens, where it accelerates HCC progression by enhancing Wnt/beta-catenin signalling. In this study, we uncover a previously unknown role of SRC-1 in HCC metastasis. Our findings reveal that SRC-1 promotes HCC metastasis through the augmentation of MMP-9 expression. The knockdown of SRC-1 effectively mitigated HCC cell metastasis both in vitro and in vivo by suppressing MMP-9 expression. Furthermore, we observed a positive correlation between SRC-1 mRNA levels and MMP-9 mRNA levels in limited and larger cohorts of HCC specimens from GEO database. Mechanistically, SRC-1 operates as a coactivator for NF-κB and AP-1, enhancing MMP-9 promoter activity in HCC cells. Higher levels of SRC-1 and MMP-9 expression are associated with worse overall survival in HCC patients. Treatment with Bufalin, known to inhibit SRC-1 expression, significantly decreased MMP-9 expression and inhibited HCC metastasis in both in vitro and in vivo settings. Our results demonstrated the pivotal role of SRC-1 as a critical modulator in HCC metastasis, presenting a potential therapeutic target for HCC intervention.
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Affiliation(s)
- Zhangwei Tong
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
- Department of Molecular and Cellular BiologyBaylor College of MedicineHoustonTexasUSA
| | - Yong Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Peng Guo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Wei Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Qiang Chen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Jing Jin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Shixiao Liu
- Department of Cardiology, School of MedicineThe First Affiliated Hospital of Xiamen University, Xiamen UniversityXiamenChina
| | - Chundong Yu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Pingli Mo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life SciencesXiamen UniversityXiamenChina
| | - Lei Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical SciencesShanxi Medical University; Shanxi Tongji Hospital, Huazhong University of Science and TechnologyTaiyuanChina
| | - Junli Huang
- Department of General SurgeryArmy 73rd Group Military Hospital of the Chinese People's Liberation Army (Chenggong Hospital of Xiamen University)XiamenChina
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2
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Wang F, Song H, Xu F, Xu J, Wang L, Yang F, Zhu Y, Tan G. Role of hepatitis B virus non-structural protein HBx on HBV replication, interferon signaling, and hepatocarcinogenesis. Front Microbiol 2023; 14:1322892. [PMID: 38188582 PMCID: PMC10767994 DOI: 10.3389/fmicb.2023.1322892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024] Open
Abstract
Hepatitis B, a global health concern caused by the hepatitis B virus (HBV), infects nearly 2 billion individuals worldwide, as reported by the World Health Organization (WHO). HBV, a hepatotropic DNA virus, predominantly targets and replicates within hepatocytes. Those carrying the virus are at increased risk of liver cirrhosis and hepatocellular carcinoma, resulting in nearly 900,000 fatalities annually. The HBV X protein (HBx), encoded by the virus's open reading frame x, plays a key role in its virulence. This protein is integral to viral replication, immune modulation, and liver cancer progression. Despite its significance, the precise molecular mechanisms underlying HBx remain elusive. This review investigates the HBx protein's roles in HBV replication, interferon signaling regulation, and hepatocellular carcinoma progression. By understanding the complex interactions between the virus and its host mediated by HBx, we aim to establish a solid foundation for future research and the development of HBx-targeted therapeutics.
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Affiliation(s)
- Fei Wang
- Department of Hepatology, Center for Pathogen Biology and Infectious Diseases, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Hongxiao Song
- Department of Hepatology, Center for Pathogen Biology and Infectious Diseases, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Fengchao Xu
- Department of Hepatology, Center for Pathogen Biology and Infectious Diseases, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Jing Xu
- Health Examination Center, The First Hospital of Jilin University, Changchun, China
| | - Le Wang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, China
| | - Fan Yang
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yujia Zhu
- Department of Hepatology, Center for Pathogen Biology and Infectious Diseases, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Guangyun Tan
- Department of Hepatology, Center for Pathogen Biology and Infectious Diseases, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
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Miller J, Dakic A, Spurgeon M, Saenz F, Kallakury B, Zhao B, Zhang J, Zhu J, Ma Q, Xu Y, Lambert P, Schlegel R, Riegel AT, Liu X. AIB1 is a novel target of the high-risk HPV E6 protein and a biomarker of cervical cancer progression. J Med Virol 2022; 94:3962-3977. [PMID: 35437795 PMCID: PMC9199254 DOI: 10.1002/jmv.27795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/13/2022] [Accepted: 04/17/2022] [Indexed: 11/10/2022]
Abstract
The high-risk human papillomaviruses (HPV-16, -18) are critical etiologic agents in human malignancy, most importantly in cervical cancer. These oncogenic viruses encode the E6 and E7 proteins that are uniformly retained and expressed in cervical cancers and required for maintenance of the tumorigenic phenotype. The E6 and E7 proteins were first identified as targeting the p53 and pRB tumor suppressor pathways, respectively, in host cells, thereby leading to disruption of cell cycle controls. In addition to p53 degradation, a number of other functions and critical targets for E6 have been described, including telomerase, Myc, PDZ-containing proteins, Akt, Wnt, mTORC1, as well as others. In this study, we identified Amplified in Breast Cancer 1 (AIB1) as a new E6 target. We first found that E6 and hTERT altered similar profiling of gene expression in human foreskin keratinocytes (HFK), independent of telomerase activity. Importantly, AIB1 was a common transcriptional target of both E6 and hTERT. We then verified that high-risk E6 but not low-risk E6 expression led to increases in AIB1 transcript levels by real-time RT-PCR, suggesting that AIB1 upregulation may play an important role in cancer development. Western blots demonstrated that AIB1 expression increased in HPV-16 E6 and E7 expressing (E6E7) immortalized foreskin and cervical keratinocytes, and in three of four common cervical cancer cell lines as well. Then, we evaluated the expression of AIB1 in human cervical lesions and invasive carcinoma using immunohistochemical staining. Strikingly, AIB1 showed positivity in the nucleus of cells in the immediate suprabasal epithelium, while nuclei of the basal epithelium were negative, as evident in the Cervical Intraepithelial Neoplasia 1 (CIN1) samples. As the pathological grading of cervical lesions increased from CIN1, CIN2, CIN3 carcinoma in situ and invasive carcinoma, AIB1 staining increased progressively, suggesting that AIB1 may serve as a novel histological biomarker for cervical cancer development. For cases of invasive cervical carcinoma, AIB1 staining was specific to cancerous lesions. Increased expression of AIB1 was also observed in transgenic mouse cervical neoplasia and cancer models induced by E6E7 and estrogen. Knockdown of AIB1 expression in E6E7 immortalized human cervical cells significantly abolished cell proliferation. Taken together, these data support AIB1 as a novel target of HPV E6 and a biomarker of cervical cancer progression.
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Affiliation(s)
- Jonathan Miller
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Aleksandra Dakic
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Megan Spurgeon
- McArdle Laboratory for Cancer Research, Department of OncologyUniversity of Wisconsin‐Madison School of Medicine and Public HealthMadisonWisconsinUSA
| | - Francisco Saenz
- Department of Oncology, Lombardi Comprehensive Cancer CenterGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Bhaskar Kallakury
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Bo Zhao
- Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Junran Zhang
- Department of Radiation Oncology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
| | - Jian Zhu
- Department of Pathology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
| | - Qin Ma
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
- Department of Biomedical Informatics, College of MedicineThe Ohio State UniversityColumbusOhioUSA
| | - Ying Xu
- Computational Systems Biology Lab, Department of Biochemistry and Molecular Biology and Institute of BioinformaticsThe University of GeorgiaAthensGeorgiaUSA
| | - Paul Lambert
- McArdle Laboratory for Cancer Research, Department of OncologyUniversity of Wisconsin‐Madison School of Medicine and Public HealthMadisonWisconsinUSA
| | - Richard Schlegel
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Anna T. Riegel
- Department of Oncology, Lombardi Comprehensive Cancer CenterGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Xuefeng Liu
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
- Department of Pathology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
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Che L, Du ZB, Wang WH, Wu JS, Han T, Chen YY, Han PY, Lei Z, Chen XX, He Y, Xu L, Lin X, Lin ZN, Lin YC. Intracellular antibody targeting HBx suppresses invasion and metastasis in hepatitis B virus-related hepatocarcinogenesis via protein phosphatase 2A-B56γ-mediated dephosphorylation of protein kinase B. Cell Prolif 2022; 55:e13304. [PMID: 35811356 PMCID: PMC9628248 DOI: 10.1111/cpr.13304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 12/24/2022] Open
Abstract
Objectives Hepatitis B virus X (HBx) is closely associated with HBV‐related hepatocarcinogenesis via the inactivation of tumour suppressors. Protein phosphatase 2A (PP2A) regulatory subunit B56 gamma (B56γ), as a tumour suppressor, plays a critical role in regulating cellular phosphorylation signals via dephosphorylation of signalling proteins. However, the underlying mechanism that B56γ involved in regulating HBx‐associated hepatocarcinogenesis phenotypes and mediating anti‐HBx antibody‐mediated tumour suppression remains unknown. Materials and Methods We used bioinformatics analysis, paired HCC patient specimens, HBx transgenic (HBx‐Tg) mice, xenograft nude mice, HBV stable replication in the HepG2.2.15 cells, and anti‐HBx antibody intervention to systematically evaluate the biological function of protein kinase B (AKT) dephosphorylation through B56γ in HBx‐associated hepatocarcinogenesis. Results Bioinformatics analysis revealed that AKT, matrix metalloproteinase 2 (MMP2), and MMP9 were markedly upregulated, while cell migration and viral carcinogenesis pathways were activated in HBV‐infected liver tissues and HBV‐associated HCC tissues. Our results demonstrated that HBx‐expression promotes AKT phosphorylation (p‐AKTThr308/Ser473), mediating the migration and invasion phenotypes in vivo and in vitro. Importantly, in clinical samples, HBx and B56γ were downregulated in HBV‐associated HCC tumour tissues compared with peritumor tissues. Moreover, intervention with site‐directed mutagenesis (AKTT308A, AKTS473A) of p‐AKTThr308/Ser473 mimics dephosphorylation, genetics‐based B56γ overexpression, and intracellular anti‐HBx antibody inhibited cell growth, migration, and invasion in HBx‐expressing HCC cells. Conclusions Our results demonstrated that B56γ inhibited HBV/HBx‐dependent hepatocarcinogenesis by regulating the dephosphorylation of p‐AKTThr308/Ser473 in HCC cells. The intracellular anti‐HBx antibody and the activator of B56γ may provide a multipattern chemopreventive strategy against HBV‐related HCC.
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Affiliation(s)
- Lin Che
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Ze-Bang Du
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Wei-Hua Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Jia-Shen Wu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Tun Han
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Yuan-Yuan Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China.,China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Pei-Yu Han
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China.,Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Zhao Lei
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Xiao-Xuan Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Yun He
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Ling Xu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Xu Lin
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Zhong-Ning Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
| | - Yu-Chun Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, China
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5
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Chin KL, Zainal N, Sam SS, Hassandarvish P, Lani R, AbuBakar S. Intracellular translocation of HMGB1 is important for Zika virus replication in Huh7 cells. Sci Rep 2022; 12:1054. [PMID: 35058496 DOI: 10.1038/s41598-022-04955-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 01/04/2022] [Indexed: 12/11/2022] Open
Abstract
Neonatal microcephaly and adult Guillain-Barré syndrome are severe complications of Zika virus (ZIKV) infection. The robustly induced inflammatory cytokine expressions in ZIKV-infected patients may constitute a hallmark for severe disease. In the present study, the potential role of high mobility group box 1 protein (HMGB1) in ZIKV infection was investigated. HMGB1 protein expression was determined by the enzyme-linked immunosorbent assay (ELISA) and immunoblot assay. HMGB1's role in ZIKV infection was also explored using treatment with dexamethasone, an immunomodulatory drug, and HMGB1-knockdown (shHMGB1) Huh7 cells. Results showed that the Huh7 cells were highly susceptible to ZIKV infection. The infection was found to induce HMGB1 nuclear-to-cytoplasmic translocation, resulting in a > 99% increase in the cytosolic HMGB1 expression at 72-h post-infection (h.p.i). The extracellular HMGB1 level was elevated in a time- and multiplicity of infection (MOI)-dependent manner. Treatment of the ZIKV-infected cells with dexamethasone (150 µM) reduced HMGB1 extracellular release in a dose-dependent manner, with a maximum reduction of 71 ± 5.84% (P < 0.01). The treatment also reduced virus titers by over 83 ± 0.50% (P < 0.01). The antiviral effects, however, were not observed in the dexamethasone-treated shHMGB1 cells. These results suggest that translocation of HMGB1 occurred during ZIKV infection and inhibition of the translocation by dexamethasone coincided with a reduction in ZIKV replication. These findings highlight the potential of targeting the localization of HMGB1 in affecting ZIKV infection.
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6
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Zhao F, Xie X, Tan X, Yu H, Tian M, Lv H, Qin C, Qi J, Zhu Q. The Functions of Hepatitis B Virus Encoding Proteins: Viral Persistence and Liver Pathogenesis. Front Immunol 2021; 12:691766. [PMID: 34456908 PMCID: PMC8387624 DOI: 10.3389/fimmu.2021.691766] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 07/26/2021] [Indexed: 12/14/2022] Open
Abstract
About 250 million people worldwide are chronically infected with Hepatitis B virus (HBV), contributing to a large burden on public health. Despite the existence of vaccines and antiviral drugs to prevent infection and suppress viral replication respectively, chronic hepatitis B (CHB) cure remains a remote treatment goal. The viral persistence caused by HBV is account for the chronic infection which increases the risk for developing liver cirrhosis and hepatocellular carcinoma (HCC). HBV virion utilizes various strategies to escape surveillance of host immune system therefore enhancing its replication, while the precise mechanisms involved remain elusive. Accumulating evidence suggests that the proteins encoded by HBV (hepatitis B surface antigen, hepatitis B core antigen, hepatitis B envelope antigen, HBx and polymerase) play an important role in viral persistence and liver pathogenesis. This review summarizes the major findings in functions of HBV encoding proteins, illustrating how these proteins affect hepatocytes and the immune system, which may open new venues for CHB therapies.
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Affiliation(s)
- Fenglin Zhao
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China
| | - Xiaoyu Xie
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xu Tan
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hongli Yu
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China
| | - Miaomiao Tian
- Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Huanran Lv
- Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Chengyong Qin
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jianni Qi
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Qiang Zhu
- Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Provincial Engineering and Technological Research Center for Liver Diseases Prevention and Control, Jinan, China.,Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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7
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Elpek GO. Molecular pathways in viral hepatitis-associated liver carcinogenesis: An update. World J Clin Cases 2021; 9:4890-4917. [PMID: 34307543 PMCID: PMC8283590 DOI: 10.12998/wjcc.v9.i19.4890] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/14/2021] [Accepted: 05/26/2021] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common type of cancer among primary malignant tumors of the liver and is a consequential cause of cancer-related deaths worldwide. In recent years, uncovering the molecular mechanisms involved in the development and behavior of this tumor has led to the identification of multiple potential treatment targets. Despite the vast amount of data on this topic, HCC remains a challenging tumor to treat due to its aggressive behavior and complex molecular profile. Therefore, the number of studies aiming to elucidate the mechanisms involved in both carcinogenesis and tumor progression in HCC continues to increase. In this context, the close association of HCC with viral hepatitis has led to numerous studies focusing on the direct or indirect involvement of viruses in the mechanisms contributing to tumor development and behavior. In line with these efforts, this review was undertaken to highlight the current understanding of the molecular mechanisms by which hepatitis B virus (HBV) and hepatitis C virus (HCV) participate in oncogenesis and tumor progression in HCC and summarize new findings. Cumulative evidence indicates that HBV DNA integration promotes genomic instability, resulting in the overexpression of genes related to cancer development, metastasis, and angiogenesis or inactivation of tumor suppressor genes. In addition, genetic variations in HBV itself, especially preS2 deletions, may play a role in malignant transformation. Epigenetic dysregulation caused by both viruses might also contribute to tumor formation and metastasis by modifying the methylation of DNA and histones or altering the expression of microRNAs. Similarly, viral proteins of both HBV and HCV can affect pathways that are important anticancer targets. The effects of these two viruses on the Hippo-Yap-Taz pathway in HCC development and behavior need to be investigated. Additional, comprehensive studies are also needed to determine these viruses' interaction with integrins, farnesoid X, and the apelin system in malignant transformation and tumor progression. Although the relationship of persistent inflammation caused by HBV and HCV hepatitis with carcinogenesis is well defined, further studies are warranted to decipher the relationship among inflammasomes and viruses in carcinogenesis and elucidate the role of virus-microbiota interactions in HCC development and progression.
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Affiliation(s)
- Gulsum Ozlem Elpek
- Department of Pathology, Akdeniz University Medical School, Antalya 07070, Turkey
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8
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Li L, Deng CX, Chen Q. SRC-3, a Steroid Receptor Coactivator: Implication in Cancer. Int J Mol Sci 2021; 22:4760. [PMID: 33946224 DOI: 10.3390/ijms22094760] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023] Open
Abstract
Steroid receptor coactivator-3 (SRC-3), also known as amplified in breast cancer 1 (AIB1), is a member of the SRC family. SRC-3 regulates not only the transcriptional activity of nuclear receptors but also many other transcription factors. Besides the essential role of SRC-3 in physiological functions, it also acts as an oncogene to promote multiple aspects of cancer. This review updates the important progress of SRC-3 in carcinogenesis and summarizes its mode of action, which provides clues for cancer therapy.
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9
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Yang N, Wang T, Li Q, Han F, Wang Z, Zhu R, Zhou J. HBXIP drives metabolic reprogramming in hepatocellular carcinoma cells via METTL3-mediated m6A modification of HIF-1α. J Cell Physiol 2020; 236:3863-3880. [PMID: 33305825 DOI: 10.1002/jcp.30128] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/10/2020] [Accepted: 10/15/2020] [Indexed: 12/17/2022]
Abstract
Cancer cells sustain high levels of glycolysis and glutaminolysis via reprogramming of intracellular metabolism, which represents a driver of hepatocellular carcinoma (HCC) progression. Understanding the mechanisms of cell metabolic reprogramming may present a new basis for liver cancer treatment. Herein, we collected HCC tissues and noncancerous liver tissues and found hepatitis B virus X-interacting protein (HBXIP) was found to be upregulated in HCC tissues and associated with poor prognosis. The N6-methyladenosine (m6A) level of hypoxia-inducible factor-1α (HIF-1α) in HCC cells was evaluated after the intervention of METTL3. The possible m6A site of HIF-1α was queried and the binding relationship between METTL3 and HIF-1α was verified. The interference of HBXIP suppressed HCC malignant behaviors and inhibited the Warburg effect in HCC cells. METTL3 was upregulated in HCC tissues and positively regulated by HBXIP. Overexpression of METTL3 restored cell metabolic reprogramming in HCC cells with partial loss of HBXIP. HBXIP mediated METTL3 to promote the metabolic reprogramming and malignant biological behaviors of HCC cells. The levels of total m6A in HCC cells and m6A in HIF-1α were increased. METTL3 had a binding relationship with HIF-1α and mediated the m6A modification of HIF-1α. In conclusion, HBXIP drives metabolic reprogramming in HCC cells via METTL3-mediated m6A modification of HIF-1α.
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Affiliation(s)
- Nanmu Yang
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Tao Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Qingjun Li
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Feng Han
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhengzheng Wang
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ruili Zhu
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jinxue Zhou
- Department of Hepatopancreatobiliary Surgery, Henan Cancer Hospital, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China
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10
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Zhang Y, Chen J, Liao T, Chen S, Yan J, Lin X. Maternal HBsAg carriers and pregnancy outcomes: a retrospective cohort analysis of 85,190 pregnancies. BMC Pregnancy Childbirth 2020; 20:724. [PMID: 33238912 PMCID: PMC7687687 DOI: 10.1186/s12884-020-03257-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 09/15/2020] [Indexed: 11/27/2022] Open
Abstract
Background Nowadays, a positive HBV carrier status is common among pregnant women, especially in endemic areas (such as China), little is known about the impact of maternal HBV infection on the risk of adverse pregnancy outcomes. Pregnant women with HBV infection often develop obstetric complications, such as pregnancy-induced hypertension (PIH) syndrome, postpartum hemorrhage, and gestational diabetes mellitus (GDM), and their infants often exhibit neonatal complications. Methods This study undertook a retrospective cohort analysis to explore the association of HBV carrier status with adverse pregnancy outcomes. A cohort of 85,190 women including 9699 HBsAg-positive and 73,076 HBsAg-negative pregnancies was retrospectively analyzed. Results It’s found that HBsAg-positive pregnancies may result in higher risk of various maternal outcomes such as ICP (OR 3.4,95%CI 2.80 to 4.13), postpartum hemorrhage (OR 1.16,95%CI 1.00 to 1.34). Interestingly, there was a decreased risk of Preeclampsia (OR 0.91,95%CI 0.87 to 0.96), premature rupture of membrane (OR 0.91,95%CI 0.87 to 0.96) and gestational hypertension (OR 0.828,95%CI 0.701 to 0.978). And in vaginal delivery subgroup analysis, It’s found that the HBsAg-positive group had a higher risk of placental abruption (OR, 1.44; 95% CI, 1.16–1.79). Conclusions The present results suggest that compared with HBV positive pregnancies were more likely to be ICP and postpartum hemorrhage. HBV-positive pregnant women underwent vaginal delivery were more likely to have placental abruption and premature birth compared with HBV-negative women. Obstetricians should be aware of ICP, postpartum hemorrhage, placental abruption and premature birth in HBV-positive pregnant women.
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Affiliation(s)
- Yulong Zhang
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
| | - Jiacheng Chen
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
| | - Tingting Liao
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
| | - Siwen Chen
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
| | - Jianying Yan
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China.
| | - Xiaoqian Lin
- Department of Obstetrics and Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
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11
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Ma L, Liu W, Xu A, Ji Q, Ma Y, Tai Y, Wang Y, Shen C, Liu Y, Wang T, Han J, Zhao C. Activator of thyroid and retinoid receptor increases sorafenib resistance in hepatocellular carcinoma by facilitating the Warburg effect. Cancer Sci 2020; 111:2028-2040. [PMID: 32279388 PMCID: PMC7293092 DOI: 10.1111/cas.14412] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/27/2020] [Accepted: 04/01/2020] [Indexed: 01/02/2023] Open
Abstract
Sorafenib resistance is a major challenge in the therapy for advanced hepatocellular carcinoma (HCC). However, the underlying molecular mechanisms of HCC resistance to sorafenib remain unclear. Activator of thyroid and retinoid receptor (ACTR, also known as SRC‐3), overexpressed in HCC patients, plays an important oncogenic role in HCC; however, the link between ACTR and sorafenib resistance in HCC is unknown. Our study demonstrated that ACTR was one of the most upregulated genes in sorafenib‐resistant HCC xenografts. ACTR increases sorafenib resistance through regulation of the Warburg effect. ACTR promotes glycolysis through upregulation of glucose uptake, ATP and lactate production, and reduction of the extracellular acidification and the oxygen consumption rates. Glycolysis regulated by ACTR is vital for the susceptibility of HCC to sorafenib in vitro and in vivo. Mechanistically, ACTR knockout or knockdown decreases the expression of glycolytic enzymes. In HCC patients, ACTR expression is positively correlated with glycolytic gene expression and is associated with poorer outcome. Furthermore, ACTR interacts with the central regulator of the Warburg effect, c‐Myc, and promotes its recruitment to glycolytic gene promoters. Our findings provide new clues regarding the role of ACTR as a prospective sensitizing target for sorafenib therapy in HCC.
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Affiliation(s)
- Luyuan Ma
- Department of Infectious Diseases, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wenpeng Liu
- Department of Infectious Diseases, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - An Xu
- Department of Oncology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Quanbo Ji
- Department of Thoracic Surgery, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Yongfu Ma
- Department of Thoracic Surgery, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Yanhong Tai
- Department of Oncology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Yadong Wang
- Department of Infectious Diseases, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chuan Shen
- Department of Infectious Diseases, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ying Liu
- Department of Ophthalmology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Tao Wang
- Department of Oncology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Juqiang Han
- Department of Liver Disease, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Caiyan Zhao
- Department of Infectious Diseases, The Third Hospital of Hebei Medical University, Shijiazhuang, China
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12
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Gao W, Jia Z, Tian Y, Yang P, Sun H, Wang C, Ding Y, Zhang M, Zhang Y, Yang D, Tian Z, Zhou J, Ruan Z, Wu Y, Ni B. HBx Protein Contributes to Liver Carcinogenesis by H3K4me3 Modification Through Stabilizing WD Repeat Domain 5 Protein. Hepatology 2020; 71:1678-1695. [PMID: 31544250 DOI: 10.1002/hep.30947] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 09/09/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Cancer is typically considered as a genetic and epigenetic disease. Although numerous studies have indicated that an aberrant structure, function, or expression level of epigenetic enzymes contribute to many tumor types, precisely how the epigenetic mechanisms are involved in the hepatitis B virus (HBV)-induced hepatocellular carcinoma (HCC) remains unknown. APPROACH AND RESULTS In this study, we found that the WD repeat domain 5 protein (WDR5)-a core subunit of histone H3 lysine 4 methyltransferase complexes, which catalyze the generation of histone H3 lysine 4 trimethylation (H3K4me3) modification-is highly expressed in HBV-related HCC and promotes HCC development. WDR5 plays a critical role in HBV-driven cell proliferation and tumor growth in mice, and the WDR5-0103 small-molecule inhibitor of WDR5 activity compromises HBV- and hepatitis B x protein (HBx)-driven tumor proliferation. The aberrantly high WDR5 protein level was found to involve HBx through its stabilization of the WDR5 protein by inhibiting the interaction between the damage-specific DNA-binding protein 1/cullin-4 and WDR5, causing decreased ubiquitination of the WDR5 protein. HBx was found to colocalize with WDR5 on chromatin genome wide and promotes genome-wide H3K4me3 modification by means of WDR5. Furthermore, the recruitment of HBx to promoters of target genes relied on its interaction with WDR5 through its α-helix domain. WDR5 was also found to promote HBV transcription through H3K4 modification of covalently closed circular DNA minichromosome, and WDR5-0103 was able to inhibit HBV transcription. Finally, the in vitro and in vivo data further proved that HBx exerted its tumor-promoting function in a WDR5-dependent manner. CONCLUSIONS Our data reveals that WDR5 is a key epigenetic determinant of HBV-induced tumorigenesis and that the HBx-WDR5-H3K4me3 axis may be a potential therapeutic target in HBV-induced liver pathogenesis.
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Affiliation(s)
- Weiwu Gao
- Department of Pathophysiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Chongqing, China
- Key Laboratory of High Altitude Medicine, PLA, Chongqing, China
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Zhengcai Jia
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yi Tian
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | | | - Hui Sun
- Department of Rheumatology and Immunology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chenhui Wang
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Yi Ding
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD
- Allen Institute for Brain Science, Seattle, WA
| | - Mengjie Zhang
- Department of Pathophysiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
| | - Yi Zhang
- Department of Pathophysiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
| | - Di Yang
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Zhiqiang Tian
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Jian Zhou
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Zhihua Ruan
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yuzhang Wu
- Institute of Immunology of PLA, Third Military Medical University, Chongqing, China
| | - Bing Ni
- Department of Pathophysiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Chongqing, China
- Key Laboratory of High Altitude Medicine, PLA, Chongqing, China
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13
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Chen YY, Wang WH, Che L, Lan Y, Zhang LY, Zhan DL, Huang ZY, Lin ZN, Lin YC. BNIP3L-Dependent Mitophagy Promotes HBx-Induced Cancer Stemness of Hepatocellular Carcinoma Cells via Glycolysis Metabolism Reprogramming. Cancers (Basel) 2020; 12:E655. [PMID: 32168902 DOI: 10.3390/cancers12030655] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) is one of predisposing factors for hepatocellular carcinoma (HCC). The role of HBV x protein (HBx) in mediating the induction and maintenance of cancer stemness during HBV-related HCC attracts considerable attention, but the exact mechanism has not been clearly elucidated. Here, ABCG2-dependent stem-like side population (SP) cells, which are thought to be liver cancer stem cells (LCSCs), were present in HCC cells, and the fraction of this subset was increased in HBx-expressing HCC cells. In addition, glycolysis was upregulated in LCSCs and HBx-expressing HCC cells, and intervention of glycolysis attenuated cancer stem-like phenotypes. Mitochondria play an important role in the maintenance of energy homeostasis, BNIP3L-dependent mitophagy was also activated in LCSCs and HBx-expressing HCC cells, which triggered a metabolic shift toward glycolysis. In summary, we proposed a positive feedback loop, in which HBx induced BNIP3L-dependent mitophagy which upregulated glycolytic metabolism, increasing cancer stemness of HCC cells in vivo and in vitro. BNIP3L might be a potential therapeutic target for intervention of LCSCs-associated HCC. Anti-HBx, a monoclonal antibody targeting intracellular HBx, had the potential to delay the progression of HBV infection related-HCC.
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14
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Chen Y, Sun Y, Zhao W, Ma Y, Yan Z, Nie X. Elevated SRC3 expression predicts pemetrexed resistance in lung adenocarcinoma. Biomed Pharmacother 2020; 125:109958. [PMID: 32036219 DOI: 10.1016/j.biopha.2020.109958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/12/2020] [Accepted: 01/23/2020] [Indexed: 12/24/2022] Open
Abstract
Lung cancer has been the leading cause of cancer-related death for many years worldwide. Pemetrexed, either as monotherapy or combined with other agents, is the preferred chemotherapy regimen for lung adenocarcinoma. However, both de novo and acquired resistance against pemetrexed frequently occur and lead to poor prognosis of patients. The underlying mechanisms remain poorly characterized. Here, RNA-seq analysis is utilized to compare gene expression levels in an adenocarcinoma cell line A549 with those in its pemetrexed-resistant counterpart, A549/PEM. We show that SRC3 is one of the most significantly upregulated genes in pemetrexed-resistant cells. SRC3 specifically enhances pemetrexed resistance in cultured adenocarcinoma cells. In addition, SRC3 increases pemetrexed resistance by decreasing chemotherapy-induced apoptosis via downregulating ROS level. Mechanistically, SRC3 enhances pemetrexed resistance via regulating Nrf2 and AKT signaling pathway. High SRC3 expression is positively correlated with decreased responsiveness to pemetrexed rather than other chemotherapeutic agents and predicts a poorer clinical outcome in lung adenocarcinoma patients. These data indicate that knockdown of SRC3 may be useful to treat pemetrexed-resistant lung cancer and may also provide a specific biomarker to predict pemetrexed responsiveness in lung cancer.
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15
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Abstract
SKP1-cullin-1-F-box-protein (SCF) E3 ubiquitin ligase complex is responsible for the degradation of proteins in a strictly regulated manner, through which it exerts pivotal roles in regulating various key cellular processes including cell cycle and division, apoptosis, and differentiation. The substrate specificity of the SCF complex largely depends on the distinct F-box proteins, which function in either tumor promotion or suppression or in a context-dependent manner. Among the 69 F-box proteins identified in human genome, FBW7, SKP2, and β-TRCP have been extensively investigated among various types of cancer in respective of their roles in cancer development, progression, and metastasis. Moreover, several specific inhibitors have been developed to target those E3 ligases, and their efficiency in tumors has been determined. In this review, we provide a summary of the roles of SCF E3 ligases in cancer development, as well as the potential application of miRNA or specific inhibitors for cancer therapy.
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Affiliation(s)
- Jing Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Yunhua Peng
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China.,Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jinfang Zhang
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jiangang Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Jiankang Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China.
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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16
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Shen B, Chen Y, Hu J, Qiao M, Ren J, Hu J, Chen J, Tang N, Huang A, Hu Y. Hepatitis B virus X protein modulates upregulation of DHX9 to promote viral DNA replication. Cell Microbiol 2019; 22:e13148. [PMID: 31829498 DOI: 10.1111/cmi.13148] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 12/21/2022]
Abstract
Hepatitis B virus (HBV) infection is a major cause of acute and chronic liver diseases. During the HBV life cycle, HBV hijacks various host factors to assist viral replication. In this research, we find that the HBV regulatory protein X (HBx) can induce the upregulation of DExH-box RNA helicase 9 (DHX9) expression by repressing proteasome-dependent degradation mediated by MDM2. Furthermore, we demonstrate that DHX9 contributes to viral DNA replication in dependence on its helicase activity and nuclear localization. In addition, the promotion of viral DNA replication by DHX9 is dependent on its interaction with Nup98. Our findings reveal that HBx-mediated DHX9 upregulation is essential for HBV DNA replication.
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Affiliation(s)
- Bocun Shen
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yanmeng Chen
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jie Hu
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Miao Qiao
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jihua Ren
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jieli Hu
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Juan Chen
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Ni Tang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Ailong Huang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yuan Hu
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, 109#, Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
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17
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Shokri S, Mahmoudvand S, Taherkhani R, Farshadpour F, Jalalian FA. Complexity on modulation of NF-κB pathways by hepatitis B and C: A double-edged sword in hepatocarcinogenesis. J Cell Physiol 2019; 234:14734-14742. [PMID: 30741410 DOI: 10.1002/jcp.28249] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 01/24/2023]
Abstract
Nuclear factor-κB (NF-κB), a family of master regulated dimeric transcription factors, signaling transduction pathways are active players in the cell signaling that control vital cellular processes, including cell growth, proliferation, differentiation, apoptosis, morphogenesis, angiogenesis, and immune responses. Nevertheless, aberrant regulation of the NF-κB signaling pathways has been associated with a significant number of human cancers. In fact, NF-κB acts as a double-edged sword in the vital cellular processes and carcinogenesis. This review provides an overview on the modulation of the NF-κB signaling pathways by proteins of hepatitis B and C viruses. One of the major NF-κB events that are modulated by these viruses is the induction of hepatocellular carcinoma. Given the central function of NF-κB in carcinogenesis, it has turned out to be a considerable therapeutic target for cancer therapy.
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Affiliation(s)
- Somayeh Shokri
- Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Virology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Shahab Mahmoudvand
- Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Virology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Reza Taherkhani
- The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Fatemeh Farshadpour
- The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Farid Azizi Jalalian
- Department of Virology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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18
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Li M, Wang Y, Xia X, Mo P, Xu J, Yu C, Li W. Steroid receptor coactivator 3 inhibits hepatitis B virus gene expression through activating Akt signaling to prevent HNF4α nuclear translocation. Cell Biosci 2019; 9:64. [PMID: 31417670 PMCID: PMC6692928 DOI: 10.1186/s13578-019-0328-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/06/2019] [Indexed: 02/08/2023] Open
Abstract
Background Chronic hepatitis B virus (HBV) infection is one of the most serious global public health problems. The role of steroid receptor coactivator 3 (SRC-3) in HBV biosynthesis is unknown. The aim of this study is to investigate the function of SRC-3 in regulating HBV biosynthesis both in vitro and in vivo and to identify the underlying mechanism. Results In this study, we found that knockdown of SRC-3 could increase the levels of HBV mRNA and HBV proteins HBsAg and HBeAg in human liver cancer cell line HepG2 transfected with pHBV1.3 plasmids. In contrast, enforced expression of SRC-3 in SRC-3-knockdown HepG2 cells reduced the levels of HBV mRNA and HBV proteins HBsAg and HBeAg. Knockdown of SRC-3 dampened the Akt signaling, which has been shown to play a negative role in HBV transcription. Ectopic expression of constitutively activated Akt impaired the enhancement of HBV transcription by SRC-3 knockdown, indicating that SRC-3 inhibits HBV transcription by enhancing Akt signaling. Both SRC-3 and constitutively activated Akt could inhibit hepatocyte nuclear factor 4α (HNF4α)-mediated upregulation of HBV core promoter activity by preventing HNF4α nuclear translocation. Consistent with the in vitro results, in an in vivo chronic HBV replication mouse model developed by hydrodynamic injection of pHBV1.3 plasmids into mouse tail vein, enforced expression of SRC-3 in mouse liver reduced the levels of HBV mRNA in the liver and HBV antigens in serum, whereas knockout of SRC-3 in mouse increased the levels of HBV mRNA in the liver and HBV antigens in the serum. Conclusion Our study suggests that SRC-3 inhibits HBV gene expression by activating Akt signaling to prevent HNF4α nuclear translocation. Electronic supplementary material The online version of this article (10.1186/s13578-019-0328-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ming Li
- 1Department of Hepatobiliary and Pancreatic & Organ Transplantation Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361012 Fujian China.,2State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361012 Fujian China
| | - Yi Wang
- 2State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361012 Fujian China
| | - Xiaochun Xia
- Department of Medical Technology, Xiamen Medical College, Xiamen, China
| | - Pingli Mo
- 2State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361012 Fujian China
| | - Jianming Xu
- 4Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX USA
| | - Chundong Yu
- 2State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361012 Fujian China
| | - Wengang Li
- 1Department of Hepatobiliary and Pancreatic & Organ Transplantation Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361012 Fujian China
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19
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Chasapi A, Balampanis K, Tanoglidi A, Kourea E, Lambrou GI, Lambadiari V, Kalfarentzos F, Hatziagelaki E, Melachrinou M, Sotiropoulou-Bonikou G. SRC-3/AIB-1 may Enhance Hepatic NFATC1 Transcription and Mediate Inflammation in a Tissue-Specific Manner in Morbid Obesity. Endocr Metab Immune Disord Drug Targets 2019; 20:242-255. [PMID: 31322077 DOI: 10.2174/1871530319666190715160630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Obesity is a global epidemic which is associated with several cardiometabolic comorbidities and is characterized by chronic, low grade systemic inflammation. Numerous biomarkers have been implicated in the pathophysiology of the disease, including transcription factors and coregulators. Steroid Receptor Coactivator (SRC)-family represent the master regulators of metabolic pathways and their dysregulation is strongly associated with numerous metabolic disorders. METHODS 50 morbidly obese patients participated in the present study. Biopsies were collected from visceral adipose tissue, subcutaneous adipose tissue, skeletal muscle, extra-myocellular adipose tissue and liver. We evaluated the differential protein expression of NFATc1, SRC-2/TIF-2, SRC-3/AIB-1 and inflammatory biomarkers CD68 and CD3 by immunohistochemistry. The current study was designed to determine any correlations between the transcription factor NFATc1 and the SRC coregulators, as well as any associations with the inflammatory biomarkers. RESULTS We identified SRC-3 as a hepatic NFATc1 coactivator and we demonstrated its possible role in energy homeostasis and lipid metabolism. Moreover, we revealed a complex and extensive intraand inter-tissue network among the three main investigated proteins and the inflammatory biomarkers, suggesting their potential participation in the obesity-induced inflammatory cascade. CONCLUSION Steroid receptor coactivators are critical regulators of human metabolism with pleiotropic and tissue-specific actions. We believe that our study will contribute to the better understanding of the complex multi-tissue interactions that are disrupted in obesity and can therefore lead to numerous cardiometabolic diseases. Further on, our present findings suggest that SRC-3/AIB-1 could constitute possible future drug targets.
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Affiliation(s)
- Athina Chasapi
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece
| | - Konstantinos Balampanis
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece.,Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece.,Department of Anatomy and Histology-Embryology, Medical School, University of Patras, 26500 Patras, Greece
| | - Anna Tanoglidi
- Department of Clinical Pathology, Akademiska University, Uppsala, Sweden
| | - Eleni Kourea
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Medical School, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Vaia Lambadiari
- Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece
| | - Fotios Kalfarentzos
- First Department of Propaedeutic Medicine, National and Kapodistrian University of Athens Medical School, Laiko General Hospital, 17, Ag. Thoma St, 11527 Athens, Greece
| | - Erifili Hatziagelaki
- Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece
| | - Maria Melachrinou
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece
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20
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Fu Y, Yang X, Liang H, Wu X. Serum hepatitis B viral (HBV) DNA is a predictive biomarker for survival in non-small cell lung cancer patients with chronic HBV infection. Cancer Manag Res 2019; 11:5091-5100. [PMID: 31213920 PMCID: PMC6549665 DOI: 10.2147/cmar.s198714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/26/2019] [Indexed: 12/12/2022] Open
Abstract
Purpose: To study the association between pretreatment serum hepatitis B viral (HBV) DNA copy numbers and clinical outcome of non-small cell lung cancer (NSCLC) patients with chronic HBV infection. Patients and methods: We retrospectively evaluated the medical records of NSCLC HBV (+) patients between January 2008 and December 2010. The HBV DNA copy numbers and other prognostic factors including albumin (ALB), C-reactive protein (CRP), platelet, neutrophil–lymphocyte ratio (NLR), platelet–lymphocyte ratio (PLR), and Glasgow Prognostic Score (GPS) were obtained before any antitumor treatment. Kaplan–Meier curves and the log-rank test were used to calculate prognostic significance. A multivariable Cox proportional hazard regression was modeled to analyze the independent prognostic factors for NSCLC HBV (+) patients. All independent prognostic factors in the Cox multivariable analysis were used to build a nomogram. The predictive accuracy of HBV DNA, TNM stage and nomogram was evaluated with the concordance index (C-index) and time-dependent receiver operating characteristics (ROC) curves, and simultaneously compared with traditional TNM staging system respectively. Results: A total of 188 patients were recruited in this study; the median age was 56 years, and the median overall survival (OS) was 34 months. Cox multivariate analysis results showed independent factors for OS including TNM stage (P=0.028), treatment (P=0.002), HBV DNA (P<0.001), and GPS (P=0.026). The nomogram model for survival was built based on four prognostic factors. The C-index for HBV DNA was 0.67, 0.69 for TNM stage, and 0.76 for the nomogram model. There was no statistical difference between HBV DNA and TNM stage (P=0.48). However, the C-index values of nomogram model were statistically higher both than HBV DNA (0.76 vs 0.67, P<0.001), and TNM stage (0.76 vs 0.69, P<0.001). Conclusion: Pretreatment serum HBV DNA copy numbers can act as a prognostic marker of survival for NSCLC patients with chronic HBV infection.
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Affiliation(s)
- Yumei Fu
- Laboratory Department of Liwan Hospital of The Third Affiliated Hospital of Guangzhou Medicine University, Guangzhou, 510175, People's Republic of China
| | - Xiaoyi Yang
- Laboratory Department of Liwan Hospital of The Third Affiliated Hospital of Guangzhou Medicine University, Guangzhou, 510175, People's Republic of China
| | - Huifen Liang
- Laboratory Department of Liwan Hospital of The Third Affiliated Hospital of Guangzhou Medicine University, Guangzhou, 510175, People's Republic of China
| | - Xingping Wu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, People's Republic of China
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21
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Kong F, You H, Kong D, Zheng K, Tang R. The interaction of hepatitis B virus with the ubiquitin proteasome system in viral replication and associated pathogenesis. Virol J 2019; 16:73. [PMID: 31146743 PMCID: PMC6543661 DOI: 10.1186/s12985-019-1183-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/20/2019] [Indexed: 12/21/2022] Open
Abstract
Background The ubiquitin proteasome system (UPS) regulates the expression levels of cellular proteins by ubiquitination of protein substrates followed by their degradation via the proteasome. As a highly conserved cellular degradation mechanism, the UPS affects a variety of biological processes and participates in viral propagation. Main body During hepatitis B virus (HBV) infection, the UPS is shown to act as a double-edged sword in viral pathogenesis. On the one hand, the UPS acts as a host defense mechanism to selectively recognize HBV proteins as well as special cellular proteins that favor the viral life cycle and induces their ubiquitin-dependent proteasomal degradation to limit HBV infection. On the other hand, the HBV has evolved to subvert the UPS function for its own advantage. Moreover, in the infected hepatocytes, certain cellular proteins that are dependent on the UPS are involved in abnormal biological processes which are mediated by HBV. Conclusion The molecular interaction of HBV with the UPS to modulate viral propagation and pathogenesis is summarized in the review. Considering the important role of the UPS in HBV infection, a better understanding of the HBV-UPS interaction could provide novel insight into the mechanisms that are involved in viral replication and pathogenesis and help to develop potential treatment strategies targeting the UPS.
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Affiliation(s)
- Fanyun Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Hongjuan You
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Delong Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Kuiyang Zheng
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,National Demonstration Center for Experimental Basic Medical Sciences Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Renxian Tang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China. .,National Demonstration Center for Experimental Basic Medical Sciences Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
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22
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Abstract
Hepatitis B virus infection remains a global healthy issue that needs to be urgently solved. Novel strategies for anti-viral therapy are based on exploring the effective diagnostic markers and therapeutic targets of diseases caused by hepatitis B virus (HBV) infection. It is well-established that not only viral proteins themselves but also key factors from the host control the biological processes associated with HBV, including replication, transcription, packaging, and secretion. Protein post-translational modifications (PTMs), such as phosphorylation, acetylation, methylation, and ubiquitination, have been shown to control protein activity, regulate protein stability, promote protein interactions and alter protein subcellular localization, leading to the modulation of crucial signaling pathways and affected cellular processes. This review focuses on the functions and effects of diverse PTMs in regulating important processes in the HBV life cycle. The potential roles of PTMs in the pathogenesis of HBV-associated liver diseases are also discussed.
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Affiliation(s)
- Fan Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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23
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Müller-Coan BG, Caetano BFR, Pagano JS, Elgui de Oliveira D. Cancer Progression Goes Viral: The Role of Oncoviruses in Aggressiveness of Malignancies. Trends Cancer 2018; 4:485-498. [DOI: 10.1016/j.trecan.2018.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 12/12/2022]
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24
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Peng K, Su G, Ji J, Yang X, Miao M, Mo P, Li M, Xu J, Li W, Yu C. Histone demethylase JMJD1A promotes colorectal cancer growth and metastasis by enhancing Wnt/β-catenin signaling. J Biol Chem 2018; 293:10606-10619. [PMID: 29802196 DOI: 10.1074/jbc.ra118.001730] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/25/2018] [Indexed: 01/19/2023] Open
Abstract
The histone demethylase Jumonji domain containing 1A (JMJD1A) is overexpressed in multiple tumors and promotes cancer progression. JMJD1A has been shown to promote colorectal cancer (CRC) progression, but its molecular role in CRC is unclear. Here, we report that JMJD1A is overexpressed in CRC specimens and that its expression is positively correlated with that of proliferating cell nuclear antigen (PCNA). JMJD1A knockdown decreased the expression of proliferative genes such as c-Myc, cyclin D1, and PCNA, suppressed CRC cell proliferation, arrested cell cycle progression, and reduced xenograft tumorigenesis. Furthermore, JMJD1A knockdown inhibited CRC cell migration, invasion, and lung metastasis by decreasing matrix metallopeptidase 9 (MMP9) expression and enzymatic activity. Moreover, bioinformatics analysis of GEO profile datasets revealed that JMJD1A expression in human CRC specimens is positively correlated with the expression of Wnt/β-catenin target genes, including c-Myc, cyclin D1, and MMP9. Mechanistically, JMJD1A enhanced Wnt/β-catenin signaling by promoting β-catenin expression and interacting with β-catenin to enhance its transactivation. JMJD1A removed the methyl groups of H3K9me2 at the promoters of c-Myc and MMP9 genes. In contrast, the JMJD1AH1120Y variant, which lacked demethylase activity, did not demethylate H3K9me2 at these promoters, failed to assist β-catenin to induce the expression of Wnt/β-catenin target genes, and failed to promote CRC progression. These findings suggest that JMJD1A's demethylase activity is required for Wnt/β-catenin activation. Of note, high JMJD1A levels in CRC specimens predicted poor cancer outcomes. In summary, JMJD1A promotes CRC progression by enhancing Wnt/β-catenin signaling, implicating JMJD1A as a potential molecular target for CRC management.
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Affiliation(s)
- Kesong Peng
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Guoqiang Su
- The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, China
| | - Jinmeng Ji
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Xiaojia Yang
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Mengmeng Miao
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Pingli Mo
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Ming Li
- the Xiamen City Key Laboratory of Biliary Tract Diseases, Xiang'an Hospital of Xiamen University, Xiamen, Fujian 361101, China, and
| | - Jianming Xu
- the Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030
| | - Wengang Li
- the Xiamen City Key Laboratory of Biliary Tract Diseases, Xiang'an Hospital of Xiamen University, Xiamen, Fujian 361101, China, and
| | - Chundong Yu
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China,
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25
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Wu CC, Wu DW, Lin YY, Lin PL, Lee H. Hepatitis B virus X protein represses LKB1 expression to promote tumor progression and poor postoperative outcome in hepatocellular carcinoma. Surgery 2018; 163:1040-1046. [PMID: 29475611 DOI: 10.1016/j.surg.2017.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/29/2017] [Accepted: 11/24/2017] [Indexed: 01/04/2023]
Abstract
BACKGROUND Hepatitis B virus X (HBx) protein plays critical roles in hepatitis B virus (HBV)-associated hepatocellular tumorigenesis through different molecular mechanisms, including inactivation of p53, a key transcription factor of liver kinase B1 (LKB1). We hypothesized that p53 inactivation by HBx protein could decrease LKB1 expression, thereby promoting tumor progression and poor outcomes in patients with HBV-associated hepatocellular carcinoma. METHODS Manipulation strategies for HBx protein and/or p53 were used to verify that loss of LKB1 could promote colony formation and invasiveness in HepG2 and Hep3B cells. The expressions of HBx protein and LKB1 in 93 hepatocellular carcinomas (HCC) were also evaluated by immunohistochemistry. Kaplan-Meier and Cox regression models were used to assess the prognostic value of both HBx protein and LKB1 proteins in patients with hepatocellular carcinoma. RESULTS Mechanistically, LKB1 expression was decreased at the transcriptional level after inactivation of p53 by HBx protein. Decreases in LKB1 expression were also associated with HBx protein-mediated colony formation and invasive capabilities. HBx protein, LKB1, and a combination of both proteins had prognostic significance for overall survival and relapse-free survival in our study population. CONCLUSION The results from cell line experiments and evaluation of patient prognosis according to expression of HBx protein and LKB1 in their HCC strongly support the hypothesis that decreases in LKB1 expression by HBx protein-mediated p53 inactivation may play an important role in HBV-associated hepatocellular tumorigenesis.
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Affiliation(s)
- Cheng-Chung Wu
- Department of General Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - De-Wei Wu
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Ying-Yu Lin
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Po-Lin Lin
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Huei Lee
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan.
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26
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Liu N, Zhang J, Yang X, Jiao T, Zhao X, Li W, Zhu J, Yang P, Jin J, Peng J, Li Z, Ye X. HDM2 Promotes NEDDylation of Hepatitis B Virus HBx To Enhance Its Stability and Function. J Virol 2017; 91:e00340-17. [PMID: 28592528 PMCID: PMC5533936 DOI: 10.1128/jvi.00340-17] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 06/01/2017] [Indexed: 12/12/2022] Open
Abstract
Hepatitis B virus (HBV)-encoded X protein (HBx) plays a critical role in HBV-related hepatocarcinoma development. In this study, we demonstrate that HBx is specifically modified by NEDD8. We found that E3 ligase HDM2 promotes NEDDylation of HBx to enhance HBx stability by preventing its ubiquitination-mediated degradation. Consistently, analysis of 160 hepatocellular carcinoma patient specimens indicated that the amount of HDM2 protein correlates with HBx protein level. We identified that HBx K91 and K95 as the key HBx NEDDylation sites and observed that the NEDDylation-deficient HBx has shorter half-life. We generated Huh7 cell lines which ectopically express wild-type and NEDDylation-deficient HBx and found that NEDDylation-deficient HBx showed less chromatin localization and less DDB1 binding. Consistently, the expression of HBx-regulated genes (IL-8, MMP9, and YAP) and HBV transcription (the activity of HBV enhancer and the amount of pgRNA transcribed from cccDNA) were significantly higher in cells expressing wild-type (WT) HBx than that in cells expressing mutant HBx. In addition, HBx-expressing cells proliferated faster than control and mutant HBx-expressing cells. We also showed that the ability of WT HBx-expressing cells to form tumors in nude mice was significantly higher than that of mutant HBx-expressing cells. In conclusion, we revealed that E3 ligase HDM2 promotes NEDDylation of HBx to enhance HBx stability and chromatin localization, which in turn favors HBx-dependent transcriptional regulation, cell proliferation, and HBV-driven tumor growth.IMPORTANCE Hepatitis B virus (HBV) HBx protein plays a critical role in viral replication and hepatocarcinogenesis. However, the regulation of HBx stability is not well understood. We found that HBx is modified by NEDD8 and that the HDM2 E3 ligase promotes HBx NEDDylation to enhance HBx stability by inhibiting its ubiquitination. We provide a new evidence to show the positive correlation between HDM2 and HBx in clinical hepatocellular carcinoma (HCC) samples. We also identified the major NEDDylation sites on HBx. Our studies indicate that the defective NEDDylation of HBx negatively affects its ability to activate the transcription of downstream genes and promote cell proliferation and tumor growth in vivo Taken together, our findings reveal a novel posttranslational modification of HBx by HDM2 which regulates its stability, subcellular localization, and functions. These findings indicate that HDM2 is an important regulator on HBx and a potential diagnosis/therapeutic marker for HBV-associated HCC.
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Affiliation(s)
- Ningning Liu
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jinfang Zhang
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Xiaohai Yang
- Institute of Health Sciences, Anhui University, Hefei, China
| | - Tong Jiao
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xin Zhao
- 302 Hospital of PLA, Beijing, China
| | - Wenxia Li
- Department of Surgery, Shijitan Hospital, Capital Medical University, Beijing, China
| | - Jianhua Zhu
- First Affiliated Hospital of PLA General Hospital, Beijing, China
| | - Pu Yang
- First Affiliated Hospital of PLA General Hospital, Beijing, China
| | - Jianping Jin
- The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Jirun Peng
- Department of Surgery, Shijitan Hospital, Capital Medical University, Beijing, China
- Ninth School of Clinical Medicine, Peking University, Beijing, China
- School of Oncology, Capital Medical University, Beijing, China
| | | | - Xin Ye
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
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27
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Kong F, You H, Tang R, Zheng K. The regulation of proteins associated with the cytoskeleton by hepatitis B virus X protein during hepatocarcinogenesis. Oncol Lett 2017; 13:2514-2520. [PMID: 28454428 DOI: 10.3892/ol.2017.5757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 12/06/2016] [Indexed: 12/17/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a major malignant disease worldwide, and chronic hepatitis B virus (HBV) infection is one of the primary causes for this type of cancer. Hepatitis B virus X protein (HBx) is a non-structural protein encoded by the viral genome that has significant effects on the pathogenesis of HCC. With the development of high-throughput assays and technologies, the abnormal HBx-induced expression of certain cellular proteins with assorted biological functions has been investigated. These target proteins identified by various methods include specific proteins associated with the cellular cytoskeleton, which contribute to HBx-induced hepatocarcinogenesis. In addition, the cytoskeletal proteins deregulated by HBx are involved in cell morphogenesis, adhesion, migration and proliferation. This review aims to summarize the current understanding of the expression profiles of HBx-associated cytoskeletal proteins, as well as their complex functions and underlying mechanisms in hepatocarcinogenesis. Considering that the potential therapeutics for various types of tumors may function through the stabilization of cytoskeletal proteins in order to restrict cellular movement and limit intracellular processes, clarifying the mechanisms underlying protein-associated cytoskeleton dysregulation by HBx may provide novel possibilities and potent therapeutic targets for HBV-associated HCC.
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Affiliation(s)
- Fanyun Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Hongjuan You
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Renxian Tang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Kuiyang Zheng
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
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28
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Chen S, Dong Z, Yang P, Wang X, Jin G, Yu H, Chen L, Li L, Tang L, Bai S, Yan H, Shen F, Cong W, Wen W, Wang H. Hepatitis B virus X protein stimulates high mobility group box 1 secretion and enhances hepatocellular carcinoma metastasis. Cancer Lett 2017; 394:22-32. [PMID: 28216372 DOI: 10.1016/j.canlet.2017.02.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 01/17/2017] [Accepted: 02/10/2017] [Indexed: 12/20/2022]
Abstract
Hepatitis B virus X protein (HBx) plays an important role in the progression of hepatocellular carcinoma. Here we reported that overexpression of HBx in hepatocellular carcinoma (HCC) cells could induce the secretion of high-mobility group box 1 (HMGB1) to promote invasion and metastasis of HCC in an autocrine/paracrine manner. HBx triggered an increase of cytoplasmic calcium and activated CAMKK/CAMKIV pathway, leading to subsequent translocation and release of HMGB1. HMGB1 neutralizing antibody, as well as calcium chelator or inhibitors of CAMKK/CAMKIV, could remarkably reduce invasion and metastasis of HCC cells in vitro and in a murine HCC metastasis model in vivo. Furthermore, the level of HMGB1 in patient serum and tumor tissues was positively correlated with HBV DNA load. We demonstrate an inverse relationship between HMGB1 in tumor cytoplasm and overall prognosis of HCC patients. CONCLUSION HBx promotes the progression of HCC through translocation and secretion of HMGB1 from tumor cells via calcium dependent cascades. These data indicates that HMGB1 could serve as a novel prognostic biomarker and potential therapeutic target for HBV-related HCC.
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Affiliation(s)
- Shuzhen Chen
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Zihui Dong
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Pinghua Yang
- Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Xianming Wang
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China
| | - Guangzhi Jin
- Department of Pathology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Han Yu
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Lei Chen
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Liang Li
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Liang Tang
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Shilei Bai
- Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Hexin Yan
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China
| | - Feng Shen
- Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Wenming Cong
- Department of Pathology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Wen Wen
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China.
| | - Hongyang Wang
- National Center for Liver Cancer, Second Military Medical University, 225 Changhai Road, Shanghai 200438, China; International Cooperation Laboratory on Signal Transduction of Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200433, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China; Ministry of Education (MOE) Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Second Military Medical University, Shanghai, China.
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29
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Zou Z, Luo X, Nie P, Wu B, Zhang T, Wei Y, Wang W, Geng G, Jiang J, Mi Y. Inhibition of SRC-3 enhances sensitivity of human cancer cells to histone deacetylase inhibitors. Biochem Biophys Res Commun 2016; 478:227-233. [PMID: 27425252 DOI: 10.1016/j.bbrc.2016.07.063] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 07/13/2016] [Indexed: 12/31/2022]
Abstract
SRC-3 is widely expressed in multiple tumor types and involved in cancer cell proliferation and apoptosis. Histone deacetylase (HDAC) inhibitors are promising antitumor drugs. However, the poor efficacy of HDAC inhibitors in solid tumors has restricted its further clinical application. Here, we reported the novel finding that depletion of SRC-3 enhanced sensitivity of breast and lung cancer cells to HDAC inhibitors (SAHA and romidepsin). In contrast, overexpression of SRC-3 decreased SAHA-induced cancer cell apoptosis. Furthermore, we found that SRC-3 inhibitor bufalin increased cancer cell apoptosis induced by HDAC inhibitors. The combination of bufalin and SAHA was particular efficient in attenuating AKT activation and reducing Bcl-2 levels. Taken together, these accumulating data might guide development of new breast and lung cancer therapies.
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Affiliation(s)
- Zhengzhi Zou
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510000, China.
| | - Xiaoyong Luo
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang 471000, China
| | - Peipei Nie
- KingMed Diagnostics and KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou 510000, China
| | - Baoyan Wu
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510000, China
| | - Tao Zhang
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510000, China
| | - Yanchun Wei
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510000, China
| | - Wenyi Wang
- Xiamen Cancer Center, Department of Medical Oncology, The First Affiliated Hospital of Xiamen University, Xiamen 361000, China
| | - Guojun Geng
- Xiamen Cancer Center, Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen 361000, China
| | - Jie Jiang
- Xiamen Cancer Center, Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen 361000, China
| | - Yanjun Mi
- Xiamen Cancer Center, Department of Medical Oncology, The First Affiliated Hospital of Xiamen University, Xiamen 361000, China.
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30
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Li M, Hu L, Zhu F, Zhou Z, Tian J, Ai J. Hepatitis B virus X protein promotes renal epithelial-mesenchymal transition in human renal proximal tubule epithelial cells through the activation of NF-κB. Int J Mol Med 2016; 38:513-20. [PMID: 27314843 DOI: 10.3892/ijmm.2016.2637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/31/2016] [Indexed: 11/05/2022] Open
Abstract
Hepatitis B virus (HBV)-associated glomerulo-nephritis is the most common extra-hepatic disorder occurring with hepatitis B virus infection. In the present study, we hypothesized that HBV X protein (HBx) may play a critical role in renal interstitial fibrosis, as HBx has been shown to induce epithelial-mesenchymal transition (EMT) in renal cells. For this purpose, we successfully transfected HBx plasmid into human renal proximal tubule epithelial cells (HK-2 cells). We found that transfection with HBx plasmid significantly downregulated E-cadherin expression and upregulated α-smooth muscle actin, collagen I and fibronectin expression in a time- and concentration-dependent manner (at the lower concentrations and earlier time points). HBx also increased nuclear factor-κB (NF-κB) phosphorylation in a time- and concentration-dependent manner (again at the lower concentrations and earlier time points); however, it did not alter the phosphorylation of Smad2, Smad3, p38, phosphoinositide 3-kinase (PI3K) or extracellular signal-regulated kinase (ERK). Thus, the findings of this study demonstrate that HBx promotes EMT in renal HK-2 cells, and the potential underlying mechanisms may involve the activation of the NF-κB signaling pathway.
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Affiliation(s)
- Mei Li
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Liping Hu
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Fengxin Zhu
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhangmei Zhou
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jianwei Tian
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jun Ai
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Zhou Z, He C, Wang J. Regulation mechanism of Fbxw7-related signaling pathways (Review). Oncol Rep 2015; 34:2215-24. [PMID: 26324296 DOI: 10.3892/or.2015.4227] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/29/2015] [Indexed: 11/05/2022] Open
Abstract
F-box and WD repeat domain-containing 7 (Fbxw7), the substrate-recognition component of SCFFbxw7 complex, is thought to be a tumor suppressor involved in cell growth, proliferation, differentiation and survival. Although an increasing number of ubiquitin substrates of Fbxw7 have been identified, the best characterized substrates are cyclin E and c-Myc. Fbxw7/cyclin E and Fbxw7/c-Myc pathways are tightly regulated by multiple regulators. Fbxw7 has been identified as a tumor suppressor in hepatocellular carcinoma. This review focused on the regulation of Fbxw7/cyclin E and Fbxw7/c-Myc pathways and discussed findings to gain a better understanding of the role of Fbxw7 in hepatocellular carcinoma.
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Affiliation(s)
- Zhenyu Zhou
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Chuanchao He
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jie Wang
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
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Tong Z, Li M, Wang W, Mo P, Yu L, Liu K, Ren W, Li W, Zhang H, Xu J, Yu C. Steroid Receptor Coactivator 1 Promotes Human Hepatocellular Carcinoma Progression by Enhancing Wnt/β-Catenin Signaling. J Biol Chem 2015; 290:18596-608. [PMID: 26082485 PMCID: PMC4513118 DOI: 10.1074/jbc.m115.640490] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Indexed: 02/05/2023] Open
Abstract
Steroid receptor coactivator 1 (SRC-1) is a transcriptional coactivator not only for steroid receptors, such as androgen receptor and estrogen receptor, but also for other transcription factors. SRC-1 has been shown to play an important role in the progression of breast cancer and prostate cancer. However, its role in liver cancer progression remains unknown. In this study, we report that SRC-1 was overexpressed in 25 (62.5%) of 40 human hepatocellular carcinoma (HCC) specimens. Down-regulation of SRC-1 decreased HCC cell proliferation and impaired tumor maintenance in HCC xenografts. Knockdown of SRC-1 reduced protein levels of the proliferation marker proliferating cell nuclear antigen (PCNA) and the oncogene c-Myc. Knockout of SRC-1 in mice reduced diethylnitrosamine/CCl4-induced tumor formation in the liver and the expression of c-Myc and PCNA in liver tumors. SRC-1 promoted c-Myc expression, at least in part, by directly interacting with β-catenin to enhance Wnt/β-catenin signaling. Consistent with these results, the expression of SRC-1 was positively correlated with PCNA expression in human HCC specimens, and the expression levels of c-Myc in SRC-1-positive HCC specimens were higher than in SRC-1-negative HCC specimens. In addition, SRC-1 and SRC-3 were co-overexpressed in 47.5% of HCC specimens, and they cooperated to promote HCC cell proliferation. Simultaneous down-regulation of SRC-1 and SRC-3 dramatically inhibited HCC cell proliferation. Our results demonstrate that SRC-1 promotes HCC progression by enhancing Wnt/β-catenin signaling and suggest that SRC-1 is a potential therapeutic molecular target for HCC.
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Affiliation(s)
- Zhangwei Tong
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China, the Engineering Research Center of Molecular Diagnostics, Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Ming Li
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China, the Department of Hepatobiliary Pancreas and Vessel Surgery, Chenggong Hospital of Xiamen University, Xiamen, Fujian 361003, China
| | - Wei Wang
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Pingli Mo
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Li Yu
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Kun Liu
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China, the Department of Pathology, Chenggong Hospital of Xiamen University, Xiamen, China
| | - Wenjing Ren
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Wengang Li
- the Department of Hepatobiliary Pancreas and Vessel Surgery, Chenggong Hospital of Xiamen University, Xiamen, Fujian 361003, China
| | - Hao Zhang
- the Cancer Research Center at Shantou University Medical College, Shantou, Guangdong 515041, China, and
| | - Jianming Xu
- the Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030
| | - Chundong Yu
- From the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China, the Engineering Research Center of Molecular Diagnostics, Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China,
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Shang J, Zheng Y, Guo X, Mo J, Xie X, Xiong Y, Liu Y, Wu K, Wu J. Hepatitis B virus replication and sex-determining region Y box 4 production are tightly controlled by a novel positive feedback mechanism. Sci Rep 2015; 5:10066. [PMID: 25970172 DOI: 10.1038/srep10066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 03/27/2015] [Indexed: 12/15/2022] Open
Abstract
Hepatitis B virus (HBV) infection is a major cause of liver diseases. However, the mechanisms underlying HBV infection and pathogenesis remain largely unknown. The sex-determining region Y box 4 (Sox4) is a transcriptional factor, which preferentially regulates the development of various organs, tissues, and cancers. But, the role of Sox4 in viral infection and pathogenesis has not been elucidated. Here, we demonstrated that Sox4 is up-regulated by HBV, and revealed the mechanism by which HBV regulates Sox4 expression. First, HBV stimulates Sox4 expression through transcriptional factor Yin Yang 1 (YY1), which binds to Sox4 promoter to activate Sox4 transcriptional activity. Second, miR-335, miR-129-2 and miR-203 inhibit Sox4 expression by targeting its mRNA 3’UTR, while HBV suppresses the microRNAs expression, resulting in up-regulating Sox4 post-transcriptionally. Third, Sox4 protein is degraded by proteasome, while HBV surface protein (HBsAg) prevents Sox4 from degradation by directly interacting with the protein, thereby enhancing Sox4 production post-translationlly. More interestingly, HBV-activated Sox4 in turn facilitates HBV replication by direct binding to the viral genome via its HMG box. Thus, this study revealed a novel positive feedback mechanism by which Sox4 production and HBV replication are tightly correlated.
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Wang Q, Xu Y, Zhou W, Zhong L, Wen Z, Yu H, Chen S, Shen J, Chen H, She Q, Jiang J, Miao J, Wei W. The viral oncoprotein HBx of Hepatitis B virus promotes the growth of hepatocellular carcinoma through cooperating with the cellular oncoprotein RMP. Int J Biol Sci 2014; 10:1181-92. [PMID: 25516716 PMCID: PMC4261202 DOI: 10.7150/ijbs.10275] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 10/14/2014] [Indexed: 01/28/2023] Open
Abstract
The smallest gene HBx of Hepatitis B virus (HBV) is recognized as an important viral oncogene (V-oncogene) in the hepatocarcinogenesis. Our previous work demonstrated that RMP is a cellular oncogene (C-oncogene) required for the proliferation of hepatocellular carcinoma (HCC) cells. Here we presented the collaboration between V-oncogene HBx and C-oncogene RMP in the development of HCC. The coexpression of HBx and RMP resulted in the cooperative effect of antiapoptosis and proliferation of HCC cells. In vivo, overexpression of RMP accelerated the growth of HBx-induced xenograft tumors in nude mice and vice versa HBx promoted the growth of RMP-driven xenograft tumors. Although HBx didn't regulate the expression of RMP, HBx and RMP interact with each other and collocalized in the cytoplasm of HCC cells. HBx and RMP collaboratively inhibited the expression of apoptotic factors and promoted the expression of antiapoptotic factors. This finding suggests that HBV may induce, or at least partially contributes to the carcinogenesis of HCC, through its V-oncoprotein HBx interacting with the C-oncoprotein RMP.
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Affiliation(s)
- Qi Wang
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China ; 2. Department of Tumor Biotherapy, Third Affiliated Hospital of Soochow University, Changzhou, 213003 China
| | - Yi Xu
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Wei Zhou
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Lei Zhong
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Zengqing Wen
- 3. Eastern Hepatobiliary Surgery Hospital, Shanghai, 200433, China
| | - Huijun Yu
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Shaomu Chen
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Jian Shen
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Han Chen
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Qinying She
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Jingting Jiang
- 2. Department of Tumor Biotherapy, Third Affiliated Hospital of Soochow University, Changzhou, 213003 China
| | - Jingcheng Miao
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
| | - Wenxiang Wei
- 1. Department of Cell Biology, School of Medicine, Soochow University, Suzhou, 215123 China
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Tang HMV, Gao WW, Chan CP, Cheng Y, Chaudhary V, Deng JJ, Yuen KS, Wong CM, Ng IOL, Kok KH, Zhou J, Jin DY. Requirement of CRTC1 coactivator for hepatitis B virus transcription. Nucleic Acids Res 2014; 42:12455-68. [PMID: 25300488 PMCID: PMC4227773 DOI: 10.1093/nar/gku925] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Transcription of hepatitis B virus (HBV) from the covalently closed circular DNA (cccDNA) template is essential for its replication. Suppressing the level and transcriptional activity of cccDNA might have anti-HBV effect. Although cellular transcription factors, such as CREB, which mediate HBV transcription, have been well described, transcriptional coactivators that facilitate this process are incompletely understood. In this study we showed that CREB-regulated transcriptional coactivator 1 (CRTC1) is required for HBV transcription and replication. The steady-state levels of CRTC1 protein were elevated in HBV-positive hepatoma cells and liver tissues. Ectopic expression of CRTC1 or its homolog CRTC2 or CRTC3 in hepatoma cells stimulated the activity of the preS2/S promoter of HBV, whereas overexpression of a dominant inactive form of CRTC1 inhibited HBV transcription. CRTC1 interacts with CREB and they are mutually required for the recruitment to the preS2/S promoter on cccDNA and for the activation of HBV transcription. Accumulation of pregenomic RNA (pgRNA) and cccDNA was observed when CRTC1 or its homologs were overexpressed, whereas the levels of pgRNA, cccDNA and secreted HBsAg were diminished when CRTC1 was compromised. In addition, HBV transactivator protein HBx stabilized CRTC1 and promoted its activity on HBV transcription. Our work reveals an essential role of CRTC1 coactivator in facilitating and supporting HBV transcription and replication.
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Affiliation(s)
- Hei-Man Vincent Tang
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Wei-Wei Gao
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chi-Ping Chan
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yun Cheng
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Vidyanath Chaudhary
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Jian-Jun Deng
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kit-San Yuen
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chun-Ming Wong
- State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Pathology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Irene Oi-Lin Ng
- State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Pathology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kin-Hang Kok
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Jie Zhou
- Department of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Dong-Yan Jin
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
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Mo P, Zhou Q, Guan L, Wang Y, Wang W, Miao M, Tong Z, Li M, Majaz S, Liu Y, Su G, Xu J, Yu C. Amplified in breast cancer 1 promotes colorectal cancer progression through enhancing notch signaling. Oncogene 2014; 34:3935-3945. [PMID: 25263446 PMCID: PMC4377317 DOI: 10.1038/onc.2014.324] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 08/01/2014] [Accepted: 08/25/2014] [Indexed: 12/21/2022]
Abstract
Aberrant activation of Notch signaling has an essential role in colorectal cancer (CRC) progression. Amplified in breast cancer 1 (AIB1), also known as steroid receptor coactivator 3 or NCOA3, is a transcriptional coactivator that promotes cancer cell proliferation and invasiveness. However, AIB1 implication in CRC progression through enhancing Notch signaling is unknown. In this study, we found that several CRC cell lines expressed high levels of AIB1, and knockdown of AIB1 decreased cell proliferation, colony formation and tumorigenesis of these CRC cells. Specifically, knockdown of AIB1 inhibited cell cycle progression at G1 phase by decreasing the mRNA levels of cyclin A2, cyclin B1, cyclin E2 and hairy and enhancer of split (Hes) 1. Furthermore, AIB1 interacted with Notch intracellular domain and Mastermind-like 1 and was recruited to the Hes1 promoter to enhance Notch signaling. Downregulation of AIB1 also decreased CRC cell invasiveness in vitro and lung metastasis in vivo. Besides that, knockout of AIB1 in mice inhibited colon carcinogenesis induced by azoxymethane/dextran sodium sulfate treatment. The mRNA levels of cyclin B1 and Hes5 were downregulated, but p27, ATOH1 and MUC2 were upregulated in the colon tumors from AIB1-deficient mice compared with those from wild-type mice. Thus, our results signify the importance of AIB1 in CRC and demonstrate that AIB1 promotes CRC progression at least in part through enhancing Notch signaling, suggesting that AIB1 is a potential molecular target for CRC treatment.
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Affiliation(s)
- Pingli Mo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Qiling Zhou
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Lei Guan
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yi Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Wei Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Mengmeng Miao
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Zhangwei Tong
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Ming Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Sidra Majaz
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yonghong Liu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Guoqiang Su
- The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Jianming Xu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Chundong Yu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, China
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Huang QT, Chen JH, Zhong M, Xu YY, Cai CX, Wei SS, Hang LL, Liu Q, Yu YH. The risk of placental abruption and placenta previa in pregnant women with chronic hepatitis B viral infection: a systematic review and meta-analysis. Placenta 2014; 35:539-45. [PMID: 24934739 DOI: 10.1016/j.placenta.2014.05.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/21/2014] [Accepted: 05/24/2014] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Several epidemiological studies have found a positive association between chronic hepatitis B virus (CHB) infection and the risk of placental abruption and placenta previa, but various studies have reported conflicting findings. The objective was to systematically review the literature to determine a possible association between CHB infection and these two placental complications. METHODS We conducted a computerized search in electronic database through March 1, 2014, supplemented with a manual search of reference lists, to identify original published research on placental abruption and placenta previa rates in women with CHB infection. Data were independently extracted, and relative risks were calculated. The meta-analysis was performed using Stata version 10.0 software. RESULTS Five studies involving 9088 placenta previa cases were identified. No significant association between CHB infection and placenta previa was identified (OR = 0.98, 95% CI = 0.60-1.62). Five studies involving 15571 placental abruption cases were identified. No significant association between CHB infection and placental abruption was identified (OR = 1.42, 95% CI, 0.93-2.15). DISCUSSION The immune response against the virus represents a key factor in determining infection outcomes. No observation of significant increased risk of the placental complications could be partially explained by the complex immune response during CHB infection. CONCLUSIONS Our meta-analysis found no evidence of significant associations between CHB infection and increased risk of placental abruption as well as placenta previa. Further well-designed studies were warranted to assess any potential association between CHB infection and increased risk of placental abruption as well as placenta previa.
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Affiliation(s)
- Q T Huang
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China; Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto M5T 3H7, Canada
| | - J H Chen
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
| | - M Zhong
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China.
| | - Y Y Xu
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
| | - C X Cai
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
| | - S S Wei
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
| | - L L Hang
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
| | - Q Liu
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Y H Yu
- Division of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou 510515, China
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Zhao J, Wang W, Huang Y, Wu J, Chen M, Cui P, Zhang W, Zhang Y. HBx elevates oncoprotein AEG-1 expression to promote cell migration by downregulating miR-375 and miR-136 in malignant hepatocytes. DNA Cell Biol 2014; 33:715-22. [PMID: 25050974 DOI: 10.1089/dna.2014.2376] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The hepatitis B viral X protein (HBx) has been established to implicate in the development of HBV-related hepatocellular carcinoma (HCC) via multiple pathways. The oncoprotein astrocyte elevated gene-1 (AEG-1) is overexpressed in various tumors, including HCC, and plays critical roles in promoting cell migration and invasion. However, the mechanisms for AEG-1 upregulation in tumors are largely unknown. In this study, we found that HBx could elevate AEG-1 protein level without altering its mRNA level. When blocking AEG-1 expression with siRNA in HBx-transfected cells, the HBx-induced cell migration was significantly suppressed. Further study indicated that miR-375 and miR-136 that targeted AEG-1 were downregulated with HBx expression. Overexpressing miR-375 and miR-136 could effectively attenuate HBx-mediated AEG-1 elevation and cell migration. These results demonstrated that HBx enabled to increase oncoprotein AEG-1 expression to promote cell migration via downregulating miR-375 and miR-136. Our findings provide a novel insight into AEG-1 upregulation in HCC and shed new light on HBx promoting HCC progression. Meanwhile, our results also suggest that miR-375 and miR-136 may have the miRNA-based therapeutic potential in HBV-associated HCC.
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Affiliation(s)
- Jing Zhao
- 1 Department of Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University , Shanghai, China
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Abstract
The human Igf-1 gene not only produces insulin‑like growth factor-I (IGF-I), but also different carboxy‑terminal extensions, known as E peptides, through alternative splicing. We and others have shown that human Eb peptide (hEb) derived from Igf-1 has intrinsic biological activity and is localized to nuclei of transfected cells. Since hEb actions can complement the activity of IGF-I itself, the aim of the present study was to compare IGF-I isoforms at the endogenous protein and transcript level in cancer cell lines, including HeLa, U2OS, HepG2 and K562 cells. Quantitative real-time PCR (qRT‑PCR) using Igf-1 isoform specific primers was performed to determine expression patterns, using β-actin as a reference gene. The overall relative Igf-1 transcript level was different across the cell lines, with ~80-fold higher expression in K562 (130.2±31.2) than in U2OS cells (1.7±1.1). The relative copy number of Igf-1b was the highest in HepG2 (69.9±28.6) and K562 cells (28.3±6.7), whereas the relative copy numbers of Igf-1a and Igf-1c were significantly higher in K562 cells compared to all other cell lines. Immunoblotting using total cell lysates, cytoplasmic and nuclear fractions were carried out to determine the level and distribution of IGF-I proteins. K562 cells exhibited the highest level of hEb in total cell lysates and nuclear fractions and no cell lines displayed hEb in the cytoplasmic fractions. In contrast, IGF-IA was the highest in HeLa cells and was enriched only in the cytoplasmic fraction. Since relatively low IGF-1A transcript level but relatively high pro‑IGF-1A protein level is plausible, we hypothesized that these transcripts could be processed with higher efficiency and/or the protein product may be stabilized by viral HPV oncogenes in HeLa cells. We assert that while it is important to analyze Igf-1 transcript level, it may be more relevant to determine the IGF isoforms at the protein level.
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Affiliation(s)
- Julia Durzyńska
- Department of Molecular Virology, Faculty of Biology, Institute of Experimental Biology, Adam Mickiewicz University, 61‑614 Poznań, Poland
| | - Elisabeth Barton
- Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Han JM, Kang JA, Han MH, Chung KH, Lee CR, Song WK, Jun Y, Park SG. Peroxisome-localized hepatitis Bx protein increases the invasion property of hepatocellular carcinoma cells. Arch Virol. 2014;159:2549-2557. [PMID: 24810099 DOI: 10.1007/s00705-014-2105-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 04/28/2014] [Indexed: 02/07/2023]
Abstract
HBx acts as a multifunctional regulator that modulates various cellular responses, which can lead to development and progression of hepatocellular carcinoma (HCC). Here, we show that the HBx protein is also localized to peroxisomes, and this increases cellular reactive oxygen species (ROS) to levels that are higher than when HBx is localized to other organelles. The elevated ROS strongly activated nuclear factor (NF)-κB. In addition, the peroxisome-localized HBx increased the expressions of matrix metalloproteinases and decreased the expression of E-cadherin, which increased the invasive ability of HCC cells. Thus, a specific distribution of HBx to peroxisomes may contribute to HCC progression by increasing the invasive ability of HCC cells through elevation of the cellular ROS level.
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He Y, Meng XM, Huang C, Wu BM, Zhang L, Lv XW, Li J. Long noncoding RNAs: Novel insights into hepatocelluar carcinoma. Cancer Lett 2013; 344:20-27. [PMID: 24183851 DOI: 10.1016/j.canlet.2013.10.021] [Citation(s) in RCA: 320] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 02/07/2023]
Abstract
Recent advances in non-protein coding part of human genome analysis have discovered extensive transcription of large RNA transcripts that lack of coding protein function, termed long noncoding RNAs (lncRNAs). It is becoming evident that lncRNAs may be an important class of pervasive genes involved in carcinogenesis and metastasis. However, the biological and molecular mechanisms of lncRNAs in diverse diseases are not yet fully understood. Thus, it is anticipated that more efforts should be made to clarify the lncRNAs world. Moreover, accumulating studies have demonstrated that a class of lncRNAs are dysregulated in hepatocellular carcinoma(HCC) and closely related with tumorigenesis, metastasis, prognosis or diagnosis. In this review, we will briefly discuss the regulation and functional role of lncRNAs in HCC, therefore evaluating the potential of lncRNAs as prospective novel therapeutic targets in HCC.
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Affiliation(s)
- Yong He
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Xiao-Ming Meng
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Bao-Ming Wu
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Lei Zhang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Xiong-Wen Lv
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Jun Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China.
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Xu C, Zhou W, Wang Y, Qiao L. Hepatitis B virus-induced hepatocellular carcinoma. Cancer Lett 2013; 345:216-22. [PMID: 23981576 DOI: 10.1016/j.canlet.2013.08.035] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 08/10/2013] [Accepted: 08/18/2013] [Indexed: 12/12/2022]
Abstract
Many factors are considered to contribute to hepatitis B virus (HBV) associated hepatocellular carcinoma (HCC), including products of HBV, HBV integration and mutation, and host susceptibility. HBV X protein (HBx) can interfere with several signal pathways that associated with cell proliferation and apoptosis, and the impact of HBx C-terminal truncation in the development of HCC has been implicated. Recent studies by advanced sequencing technologies have revealed recurrent HBV DNA integration sites in hepatoma cells and susceptible genes/SNPs play an important role in the pathogenesis of liver cancer. Epigenetic changes, immune and inflammatory factors are also important contributing factors for liver cancer. This mini-review provides an overview on the recent development of HBV induced HCC.
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Affiliation(s)
- Cheng Xu
- Institute for Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Wence Zhou
- The Department of General Surgery II, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yuming Wang
- Institute for Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.
| | - Liang Qiao
- Storr Liver Unit, University of Sydney, Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia.
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Liu B, Wen X, Huang C, Wei Y. Unraveling the complexity of hepatitis B virus: from molecular understanding to therapeutic strategy in 50 years. Int J Biochem Cell Biol 2013; 45:1987-96. [PMID: 23819994 DOI: 10.1016/j.biocel.2013.06.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 06/18/2013] [Accepted: 06/21/2013] [Indexed: 02/05/2023]
Abstract
Hepatitis B virus (HBV) is a well-known hepadnavirus with a double-stranded circular DNA genome. Although HBV was first described approximately 50 years ago, the precise mechanisms of HBV infection and effective therapeutic strategies remain unclear. Here, we focus on summarizing the complicated mechanisms of HBV replication and infection, as well as genomic factors and epigenetic regulation. Additionally, we discuss in vivo models of HBV, as well as diagnosis, prevention and therapeutic drugs for HBV. Together, the data in this 50-year review may provide new clues to elucidate molecular mechanisms of HBV pathogenesis and shed new light on the future HBV therapies.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
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Lim KH, Choi HS, Park YK, Park ES, Shin GC, Kim DH, Ahn SH, Kim KH. HBx-induced NF-κB signaling in liver cells is potentially mediated by the ternary complex of HBx with p22-FLIP and NEMO. PLoS One 2013; 8:e57331. [PMID: 23483900 PMCID: PMC3587578 DOI: 10.1371/journal.pone.0057331] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 01/21/2013] [Indexed: 02/07/2023] Open
Abstract
Sustained activation of NF-κB is one of the causative factors for various liver diseases, including liver inflammation and hepatocellular carcinoma (HCC). It has been known that activating the NF-κB signal by hepatitis B virus X protein (HBx) is implicated in the development of HCC. However, despite numerous studies on HBx-induced NF-κB activation, the detailed mechanisms still remain unsolved. Recently, p22-FLIP, a cleavage product of c-FLIPL, has been reported to induce NF-κB activation through interaction with the IκB kinase (IKK) complex in primary immune cells. Since our previous report on the interaction of HBx with c-FLIPL, we explored whether p22-FLIP is involved in the modulation of HBx function. First, we identified the expression of endogenous p22-FLIP in liver cells. NF-κB reporter assay and electrophoretic mobility shift assay (EMSA) revealed that the expression of p22-FLIP synergistically enhances HBx-induced NF-κB activation. Moreover, we found that HBx physically interacts with p22-FLIP and NEMO and potentially forms a ternary complex. Knock-down of c-FLIP leading to the downregulation of p22-FLIP showed that endogenous p22-FLIP is involved in HBx-induced NF-κB activation, and the formation of a ternary complex is necessary to activate NF-κB signaling. In conclusion, we showed a novel mechanism of HBx-induced NF-κB activation in which ternary complex formation is involved among HBx, p22-FLIP and NEMO. Our findings will extend the understanding of HBx-induced NF-κB activation and provide a new target for intervention in HBV-associated liver diseases and in the development of HCC.
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Affiliation(s)
- Keo-Heun Lim
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
- Institute of Functional Genomics, Konkuk University, Seoul, Republic of Korea
| | - Hyo Sun Choi
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Yong Kwang Park
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Eun-Sook Park
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Gu Choul Shin
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Doo Hyun Kim
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Sung Hyun Ahn
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Kyun-Hwan Kim
- Department of Pharmacology, and Center for Cancer Research and Diagnostic Medicine, IBST, Konkuk University School of Medicine, Seoul, Republic of Korea
- Institute of Functional Genomics, Konkuk University, Seoul, Republic of Korea
- * E-mail:
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Li M, Zhu M, Li W, Lu Y, Xie X, Wu Y, Zheng S. Alpha-fetoprotein receptor as an early indicator of HBx-driven hepatocarcinogenesis and its applications in tracing cancer cell metastasis. Cancer Lett 2012; 330:170-80. [PMID: 23211536 DOI: 10.1016/j.canlet.2012.11.042] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 11/23/2012] [Accepted: 11/25/2012] [Indexed: 01/30/2023]
Abstract
AFP and its receptor (AFPR) are early indicators of HBx-driven hepatocarcinogenesis. Clinical specimens, normal human liver cells L-02 and HCC cell lines were selected for analyzing the effects of HBx on expression of AFP, AFPR, Src, CXCR4, and Ras. Results showed that AFPR localized in the membranes of HCC samples. HBx upregulated the expression of AFPR and AFP prior to expression of Src, CXCR4, and Ras in L-02 cells and in liver specimens; Target-labeled AFPR was able to reveal the location and metastatic status of HCC in vivo. In this way, actuated expression of AFPR served as an indicator suitable for use in the early diagnosis of HBx-driven malignant transformation of hepatocytes. Labeled AFPR may be applied to trace primary and metastatic HCC.
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Affiliation(s)
- Mengsen Li
- Key Laboratory of Molecular Biology, Hainan Medical College, Haikou.
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Abstract
INTRODUCTION Steroid receptor coactivator-3 (SRC-3), also called amplified-in-breast cancer-1 (AIB1), is an oncogenic coactivator in endocrine and non-endocrine cancers. Functional studies demonstrate SRC-3 promotes numerous aspects of cancer, through its capacity as a coactivator for nuclear hormone receptors and other transcription factors, and via its ability to control multiple growth pathways simultaneously. Targeting SRC-3 with specific inhibitors therefore holds future promise for clinical cancer therapy. AREAS COVERED We discuss critical advances in understanding SRC-3 as a cancer mediator and prospective drug target. We review SRC-3 structure and function and its role in distinct aspects of cancer. In addition, we discuss SRC-3 regulation and degradation. Finally, we comment on a recently discovered SRC-3 small molecular inhibitor. EXPERT OPINION Most targeted chemotherapeutic drugs block only a single cellular pathway. In response, cancers frequently acquire resistance by upregulating alternative pathways. SRC-3 coordinates multiple signaling networks, suggesting SRC-3 inhibition offers a promising therapeutic strategy. Development of an effective SRC-3 inhibitor faces critical challenges. Better understanding of SRC-3 function and interacting partners, in both the nucleus and cytosol, is required for optimized inhibitor development. Ultimately, blockade of SRC-3 oncogenic function may inhibit multiple cancer-related signaling pathways.
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Affiliation(s)
- Jean Ching-Yi Tien
- Baylor College of Medicine, Department of Molecular and Cellular Biology, One Baylor Plaza, Houston, TX 77030, USA
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