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Chen Z, Zhong J, Ren X, Liu W, Wu D, Chen C, Huang H, Huang X, Liu Y, Liu J. Involvement of a novel regulatory cascade consisting of SET-H3K18ac/H3K27ac-53BP1 in Cr(VI)-induced malignant transformation of 16HBE cells. Toxicol Lett 2020; 339:70-77. [PMID: 33370592 DOI: 10.1016/j.toxlet.2020.12.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 12/09/2020] [Accepted: 12/21/2020] [Indexed: 12/20/2022]
Abstract
Hexavalent chromium (Cr(VI)) is a well-established human carcinogen with DNA damaging effects. Recently we established a Cr(VI)-induced malignant transformation model from a human bronchial epithelial (16HBE) cell line, and in the transformed (16HBE-T) cells reduced levels of 53BP1 (critical for DNA repair) and the acetylated histone H3K18/27 (H3K18/27ac) were observed. In 16HBE-T cells SET (a multifunctional protein) was elevated by Cr(VI) through quantitative proteomics analysis. In the present study, we further explore the involvement of SET in the H3K18/27ac/53BP1 cascade in the 16HBE-T model, primarily by knockdown of SET. Bioinformatic analysis of the differentially expressed proteins indicated enrichment in histone modifications, in which SET was a major regulator. In 16HBE cells SET expression was enhanced by Cr(VI) in a concentration- and exposure duration-dependent manner. In 16HBE-T cells, SET knockdown showed the following effects: reversal of H3K18/27ac and 53BP1 levels, enhanced enrichment H3K18/27ac in 53BP1's promotor region, increase rate of apoptosis and cell cycle G0/G1 arrest (with or without Cr(VI) treatment), and reduced colony-forming efficiency. Finally, In comparison with benzo(a)pyrene-transformed (malignant, 16HBE-B) cells from 16HBE where no changes in H3K18/27ac, 53BP1 or SET were observed, while the H3K18/27ac/53BP1 cascade was downregulated and SET upregulated in 16HBE-T cells, as compared with the parental 16HBE cells; thus the changes in 16HBE-T might be a specific effect of Cr(VI). In conclusion, our results suggest that SET may be involved in the malignant cell transformation, through inhibiting the H3K18/27ac/53BP1 cascade, at least in the 16HBE cell model.
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Affiliation(s)
- Zhihong Chen
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China; Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Jiacheng Zhong
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Xiaohu Ren
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Wei Liu
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Desheng Wu
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Chongyang Chen
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Haiyan Huang
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Xinfeng Huang
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055
| | - Yungang Liu
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Jianjun Liu
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China; Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China, 518055.
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4
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Hu YP, Jin YP, Wu XS, Yang Y, Li YS, Li HF, Xiang SS, Song XL, Jiang L, Zhang YJ, Huang W, Chen SL, Liu FT, Chen C, Zhu Q, Chen HZ, Shao R, Liu YB. LncRNA-HGBC stabilized by HuR promotes gallbladder cancer progression by regulating miR-502-3p/SET/AKT axis. Mol Cancer 2019; 18:167. [PMID: PMC6868746 PMCID: PMC6868746 DOI: 10.1186/s12943-019-1097-9] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 11/04/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUNDS Long non-coding RNAs (lncRNAs) are essential factors that regulate tumor development and metastasis via diverse molecular mechanisms in a broad type of cancers. However, the pathological roles of lncRNAs in gallbladder carcinoma (GBC) remain largely unknown. Here we discovered a novel lncRNA termed lncRNA Highly expressed in GBC (lncRNA-HGBC) which was upregulated in GBC tissue and aimed to investigate its role and regulatory mechanism in the development and progression of GBC. METHODS The expression level of lncRNA-HGBC in GBC tissue and different cell lines was determined by quantitative real-time PCR. The full length of lncRNA-HGBC was obtained by 5' and 3' rapid amplification of the cDNA ends (RACE). Cellular localization of lncRNA-HGBC was detected by fluorescence in situ hybridization (FISH) assays and subcellular fractionation assay. In vitro and in vivo assays were preformed to explore the biological effects of lncRNA-HGBC in GBC cells. RNA pull-down assay, mass spectrometry, and RNA immunoprecipitation (RIP) assay were used to identify lncRNA-HGBC-interacting proteins. Dual luciferase reporter assays, AGO2-RIP, and MS2-RIP assays were performed to verify the interaction between lncRNA-HGBC and miR-502-3p. RESULTS We found that lncRNA-HGBC was upregulated in GBC and its upregulation could predict poor survival. Overexpression or knockdown of lncRNA-HGBC in GBC cell lines resulted in increased or decreased, respectively, cell proliferation and invasion in vitro and in xenografted tumors. LncRNA-HGBC specifically bound to RNA binding protein Hu Antigen R (HuR) that in turn stabilized lncRNA-HGBC. LncRNA-HGBC functioned as a competitive endogenous RNA to bind to miR-502-3p that inhibits target gene SET. Overexpression, knockdown or mutation of lncRNA-HGBC altered the inhibitory effects of miR-502-3p on SET expression and downstream activation of AKT. Clinically, lncRNA-HGBC expression was negatively correlated with miR-502-3p, but positively correlated with SET and HuR in GBC tissue. CONCLUSIONS Our study demonstrates that lncRNA-HGBC promotes GBC metastasis via activation of the miR-502-3p-SET-AKT cascade, pointing to lncRNA-HGBC as a new prognostic predictor and a therapeutic target.
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Affiliation(s)
- Yun-Ping Hu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China.,Department of Pharmacology, Shanghai Jiao Tong University School of Medicine, W. Building 3, Room 407, 280 Chongqi Road, Shanghai, 200025, China
| | - Yun-Peng Jin
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiang-Song Wu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yang Yang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yong-Sheng Li
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Huai-Feng Li
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shan-Shan Xiang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiao-Ling Song
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Lin Jiang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yi-Jian Zhang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Wen Huang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shi-Li Chen
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Fa-Tao Liu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Chen Chen
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Qin Zhu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China.,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Hong-Zhuan Chen
- Department of Pharmacology, Shanghai Jiao Tong University School of Medicine, W. Building 3, Room 407, 280 Chongqi Road, Shanghai, 200025, China.
| | - Rong Shao
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China. .,Department of Pharmacology, Shanghai Jiao Tong University School of Medicine, W. Building 3, Room 407, 280 Chongqi Road, Shanghai, 200025, China.
| | - Ying-Bin Liu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Building 25, Room 513, 1665 Kongjiang Road, Shanghai, 200092, China. .,Shanghai Key Laboratory of Biliary Tract Disease Research, 1665 Kongjiang Road, Shanghai, 200092, China. .,Shanghai Research Center of Biliary Tract Disease, 1665 Kongjiang Road, Shanghai, 200092, China.
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Xu S, Duan P, Li J, Senkowski T, Guo F, Chen H, Romero A, Cui Y, Liu J, Jiang SW. Zinc Finger and X-Linked Factor (ZFX) Binds to Human SET Transcript 2 Promoter and Transactivates SET Expression. Int J Mol Sci 2016; 17:ijms17101737. [PMID: 27775603 PMCID: PMC5085766 DOI: 10.3390/ijms17101737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 09/24/2016] [Accepted: 10/08/2016] [Indexed: 02/05/2023] Open
Abstract
SET (SE Translocation) protein carries out multiple functions including those for protein phosphatase 2A (PP2A) inhibition, histone modification, DNA repair, and gene regulation. SET overexpression has been detected in brain neurons of patients suffering Alzheimer's disease, follicle theca cells of Polycystic Ovary Syndrome (PCOS) patients, and ovarian cancer cells, indicating that SET may play a pathological role for these disorders. SET transcript 2, produced by a specific promoter, represents a major transcript variant in different cell types. In this study, we characterized the transcriptional activation of human SET transcript 2 promoter in HeLa cells. Promoter deletion experiments and co-transfection assays indicated that ZFX, the Zinc finger and X-linked transcription factor, was able to transactivate the SET promoter. A proximal promoter region containing four ZFX-binding sites was found to be critical for the ZFX-mediated transactivation. Mutagenesis study indicated that the ZFX-binding site located the closest to the transcription start site accounted for most of the ZFX-mediated transactivity. Manipulation of ZFX levels by overexpression or siRNA knockdown confirmed the significance and specificity of the ZFX-mediated SET promoter activation. Chromatin immunoprecipitation results verified the binding of ZFX to its cognate sites in the SET promoter. These findings have led to identification of ZFX as an upstream factor regulating SET gene expression. More studies are required to define the in vivo significance of this mechanism, and specifically, its implication for several benign and malignant diseases related to SET dysregulation.
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Affiliation(s)
- Siliang Xu
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China.
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
| | - Ping Duan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China.
| | - Jinping Li
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
| | - Tristan Senkowski
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
| | - Fengbiao Guo
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
- Department of Histology and Embryology, Shantou University Medical College, Shantou 515000, China.
| | - Haibin Chen
- Department of Histology and Embryology, Shantou University Medical College, Shantou 515000, China.
| | - Alberto Romero
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
| | - Yugui Cui
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China.
| | - Jiayin Liu
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China.
| | - Shi-Wen Jiang
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA.
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China.
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