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Long Noncoding RNA CRNDE Functions as an Oncogene to Facilitate Aggressive Behaviors of Nasopharyngeal Carcinoma Cells by Modulating miR-3163/TWIST1 Axis. Mol Biotechnol 2021; 64:463-471. [PMID: 34796452 DOI: 10.1007/s12033-021-00425-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 11/08/2021] [Indexed: 12/09/2022]
Abstract
Long noncoding RNA (lncRNA) CRNDE has been broadly implicated in many malignancies. The aim of this study was to explore the function and potential mechanisms of CRNDE in nasopharyngeal carcinoma (NPC). Here, we discovered that CRNDE level was increased in NPC tissues and cell lines. Additionally, elevated CRNDE positively correlated with large tumor size, advanced TNM stage, distant metastasis, EBV infection and worse prognosis. Furthermore, depletion of CRNDE significantly impaired the capacity of proliferation, migration and invasion in NPC cells. Mechanically, CRNDE could serve as a molecular sponge of miR-3163 to regulate the expression of TWIST1. Importantly, the inhibitory effects of CRNDE knockdown on cell proliferation and metastasis were blocked by silence of miR-3163 or restoration of TWIST1 expression. Overall, our data highlighted that CRNDE could promote NPC progression via altering miR-3163/TWIST1 axis, suggesting CRNDE as a potential prognostic biomarker and therapeutic target for NPC treatment.
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Yuan X, Zhang L, Huang Y, Liu D, Peng P, Liu S, Long G, Hu G, Sun W. Induction of interleukin-6 by irradiation and its role in epithelial mesenchymal transition and radioresistance of nasopharyngeal carcinoma cells. Head Neck 2020; 43:757-767. [PMID: 33150659 DOI: 10.1002/hed.26531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 10/13/2020] [Accepted: 10/23/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Epithelial mesenchymal transition (EMT) participates in the radioresistance of cancer cells. In this study, we evaluated whether interleukin-6 (IL-6) regulates EMT and subsequent radioresistance in nasopharyngeal carcinoma (NPC) cells. METHODS Western blot was used to analyze the expression of proteins. Immunofluorescent assay was performed to detect the position and content of specific proteins. Colony formation assay was applied to measure the proliferation ability of NPC cells. Flow cytometry was adopted to measure cell apoptosis. RESULTS NPC cells seen with typical morphological transition and unique proteins change of EMT when exposed to irradiation. IL-6 and its downstream signal molecules elevated in irradiated cells. Blocking IL-6 with anti-IL-6 receptor antibody hampered EMT and radioresistance. Cell radiosensitivity and apoptosis rates in irradiated NPC cells declined significantly upon IL-6 stimulation. CONCLUSION Irradiation could induce EMT and activate IL-6 signaling in NPC cell lines. Blocking IL-6 was able to inhibit EMT and cellular radioresistance.
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Affiliation(s)
- Xun Yuan
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Linli Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Yu Huang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Dongbo Liu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Ping Peng
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Shunfang Liu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Guoxian Long
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Guangyuan Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
| | - Wei Sun
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan, China
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Shi L, Liu J, Peng Y, Zhang J, Dai X, Zhang S, Wang Y, Liu J, Long J. Deubiquitinase OTUD6A promotes proliferation of cancer cells via regulating Drp1 stability and mitochondrial fission. Mol Oncol 2020; 14:3169-3183. [PMID: 33070427 PMCID: PMC7718948 DOI: 10.1002/1878-0261.12825] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 09/13/2020] [Accepted: 10/13/2020] [Indexed: 12/21/2022] Open
Abstract
Dynamin‐related protein 1 (Drp1) is a cytosolic protein responsible for mitochondrial fission and is essential in the initiation and development of several human diseases, including cancer. However, the regulation of Drp1, especially of its ubiquitination, remains unclear. In this study, we report that the ovarian tumor‐associated protease deubiquitinase 6A (OTUD6A) deubiquitylates and stabilizes Drp1, thereby facilitating regulation of mitochondrial morphology and tumorigenesis. OTUD6A is upregulated in human patients with colorectal cancer. The depletion of OTUD6A leads to lower Drp1 levels and suppressed mitochondrial fission, and the affected cells are consequently less prone to tumorigenesis. Conversely, the overexpression of OTUD6A increases Drp1 levels and its protein half‐life and enhances cancer cell growth. Therefore, our results reveal a novel upstream protein of Drp1, and its role in tumorigenesis that is played, in part, through the activation of mitochondrial fission mediated by Drp1.
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Affiliation(s)
- Le Shi
- 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, China
| | - 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, 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, China
| | - Jinfang Zhang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, China
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Shuangxi Zhang
- 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, China
| | - Yongyao Wang
- 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, 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, China
| | - 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, China
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Rab1A promotes cancer metastasis and radioresistance through activating GSK-3β/Wnt/β-catenin signaling in nasopharyngeal carcinoma. Aging (Albany NY) 2020; 12:20380-20395. [PMID: 33068388 PMCID: PMC7655155 DOI: 10.18632/aging.103829] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/14/2020] [Indexed: 12/18/2022]
Abstract
Many articles have reported that Rab1A was overexpressed in a variety of human cancers and involved in tumor progression and metastasis. However, the biological function and molecular mechanism of Rab1A in nasopharyngeal carcinoma (NPC) remained unknown until now. Here we found that Rab1A overexpression is a common event and was positively associated with distant metastasis and poor prognosis of NPC patients. Functionally, Rab1A depletion inhibited the migration and EMT phenotype of NPC cells, whereas Rab1A overexpression led to the opposite effect. Furthermore, we reveal an important role for Rab1A protein in the induction of radioresistance via regulating homologous recombination (HR) signaling pathway. Mechanistically, Rab1A activated Wnt/β-catenin signaling by inhibiting the activity of GSK-3β via phosphorylation at Ser9. Then Wnt/β-catenin signaling induced NPC cells radioresistance and metastasis through nuclear translocation of β-catenin and transcription upregulation of HR pathway-related and EMT-related genes expression. In general, this study shows that Rab1A may serve as a potential biomarker for predicting prognosis in NPC patients. Targeting Rab1A and Wnt/β-catenin signaling may hold promise to overcome NPC radioresistance.
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mTORC1 inhibitor RAD001 (everolimus) enhances non-small cell lung cancer cell radiosensitivity in vitro via suppressing epithelial-mesenchymal transition. Acta Pharmacol Sin 2019; 40:1085-1094. [PMID: 30796356 DOI: 10.1038/s41401-019-0215-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 01/16/2019] [Indexed: 12/19/2022] Open
Abstract
Resistance to radiotherapy causes non-small cell lung cancer (NSCLC) treatment failure associated with local recurrence and metastasis. Thus, understanding the radiosensitization of NSCLC cells is crucial for developing new treatments and improving prognostics. mTORC1 has been shown to regulate tumor cell radiosensitivity, but the underlying mechanisms are unclear. Moreover, mTORC1 also regulates epithelial-mesenchymal transition (EMT) that is important to metastasis and recurrence. In this study we explored whether mTORC1 regulated NSCLC cell radiosensitivity by altering EMT. We performed immunohistichemical analysis using tumor, adjacent and normal tissues from 50 NSCLC patients, which confirmed significantly elevated mTOR protein expression in NSCLC tissue. Then we used NCI-H460 and NCI-H661 cell lines to examine the effects of the mTORC1 inhibitor RAD001 (everolimus) on in vitro radiosensitivity, protein expression and dose-survival curves. RAD001 (10 nmol/L) significantly inhibited the mTORC1 pathway in both the cell lines. Pretreatment with RAD001 (0.1 nmol/L) enhanced the radiosensitivity in NCI-H661 cells with wild-type PIK3CA and KRAS but not in NCI-H460 cells with mutant PIK3CA and KRAS; the sensitivity enhancement ratios in the two NSCLC cell lines were 1.40 and 1.03, respectively. Furthermore, pretreatment with RAD001 (0.1 nmol/L) significantly decreased the migration and invasion with altered expression of several EMT-associated proteins (significantly increased E-cadherin and decreased vimentin expression) in irradiated NCI-H661 cells. Publicly available expression data confirmed that irradiation affected mTOR and EMT-associated genes at the transcript level in NSCLC cells. These results suggest that mTORC1 inhibition enhances the in vitro radiosensitivity of NSCLC cells with wild-type PIK3CA and KRAS by affecting EMT. Our preclinical data may provide a potential new strategy for NSCLC treatment.
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Ginsenoside Rg3 Inhibits Migration and Invasion of Nasopharyngeal Carcinoma Cells and Suppresses Epithelial Mesenchymal Transition. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8407683. [PMID: 30915362 PMCID: PMC6409072 DOI: 10.1155/2019/8407683] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/29/2019] [Indexed: 02/07/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is a highly invasive and metastatic head and neck cancer. Distant metastasis becomes the predominant mode of treatment failure in NPC patients. Ginsenoside Rg3 (Rg3), an active pharmaceutical component extracted from traditional Chinese medicine ginseng, shows antitumor effects in various cancers. In this study, we aimed to determine whether Rg3 inhibits the migration and invasion activity of NPC cells and to explore the possible mechanisms. Our results revealed that Rg3 hampers cell migration and invasion in both HNE1 and CNE2 cell lines. A reduced level of matrix metalloproteinase-2 (MMP-2) and MMP-9 was induced by Rg3 treatment. In addition, Rg3 significantly altered the expression of epithelial mesenchymal transition (EMT) markers with increased E-cadherin but decreased Vimentin and N-cadherin expression. Transforming growth factor β- (TGF-β-) induced morphological transition and marker proteins change of EMT were reversed by Rg3. What is more, Rg3 suppressed the expression of EMT-related transcription factors, especially the Zinc Finger E-Box Binding Homeobox 1 (ZEB1). In summary, our data suggested that Rg3 could inhibit migration and invasion of NPC cells. This effect of Rg3 might be mediated through regulating MMP-2 and MMP-9 expressions and suppressing EMT. Thus, Rg3 may be a potentially effective agent for the treatment of NPC.
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Sang Y, Zhang R, Sun L, Chen KK, Li SW, Xiong L, Peng Y, Zeng L, Huang G. MORF4L1 suppresses cell proliferation, migration and invasion by increasing p21 and E-cadherin expression in nasopharyngeal carcinoma. Oncol Lett 2018; 17:294-302. [PMID: 30655767 PMCID: PMC6313188 DOI: 10.3892/ol.2018.9588] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 09/14/2018] [Indexed: 12/14/2022] Open
Abstract
Mortality factor 4-like 1 (MORF4L1) is a member of a subgroup of histone acetyltransferases and belongs to the mortality factor on chromosome 4 (MORF4) class of proteins. However, the role of MORF4L1 in cancers is largely unknown. Using reverse transcription-quantitative polymerase chain reaction and published datasets, the present study demonstrated that the expression of MORF4L1 is decreased in several cancers, including nasopharyngeal carcinoma (NPC). Additionally, the methylation rate of the promoter of MORF4L1 was identified to be significantly higher in tumour cells than in normal cells. The ectopic expression of MORF4L1 was also revealed to inhibit cell proliferation, colony formation, migration and invasion in NPC, whereas the knockdown of MORF4L1 promoted cell proliferation, colony formation, migration and invasion. Mechanistically, the present study demonstrated that MORF4L1 functions as a tumour suppressor by increasing p21 and E-cadherin levels. These findings may be useful novel targets for treating patients with NPC.
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Affiliation(s)
- Yi Sang
- Nanchang Key Laboratory of Cancer Pathogenesis and Translational Research, Center Laboratory, The Third Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Ruhua Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Longhua Sun
- Respiratory Department, Nanchang Hospital of Integrative Traditional Chinese and Western Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330008, P.R. China
| | - Kaddie Kwok Chen
- College of Arts and Sciences, Cornell University, Ithaca, NY 14850, USA
| | - Si-Wei Li
- Department of Radiation Oncology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541000, P.R. China
| | - Longxin Xiong
- Nanchang Key Laboratory of Cancer Pathogenesis and Translational Research, Center Laboratory, The Third Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Yongjian Peng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Lei Zeng
- Department of Radiation Oncology, Jiangxi Cancer Hospital, Nanchang, Jiangxi 330029, P.R. China
| | - Guofu Huang
- Nanchang Key Laboratory of Cancer Pathogenesis and Translational Research, Center Laboratory, The Third Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330008, P.R. China
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Wu C, Peng S, Sun W, Luo M, Su B, Liu D, Hu G. Association of E-cadherin methylation with risk of nasopharyngeal cancer: A meta-analysis. Head Neck 2018; 40:2538-2545. [PMID: 29947108 DOI: 10.1002/hed.25319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 03/13/2018] [Accepted: 04/03/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Various studies have assessed the association between E-cadherin methylation and risk of nasopharyngeal cancer (NPC) but the conclusion remains unclear. This meta-analysis was conducted to evaluate the effects of E-cadherin methylation on the incidence and clinicopathological characteristics of NPC. METHODS Ten studies published up to June 30, 2016, were collected. Odds ratios (ORs) with corresponding confidence intervals (CIs) were calculated and summarized, respectively. RESULTS The E-cadherin methylation in NPC was significantly higher than those in normal groups (OR 16.23; 95% CI 8.34-31.60; P < .001). Ethnicity-stratified analysis indicated that E-cadherin methylation was strongly correlated with NPC among both Asians (OR 16.98; 95% CI 8.45-34.14; P < .001) and North Africans (OR 10.67; 95% CI 1.21-93.72; P = .033). However, further analysis showed that E-cadherin methylation was not strongly associated with clinicopathological feathers in patients with NPC. CONCLUSION The E-cadherin methylation is strongly associated with the incidence of NPC, which can serve as an effective biomarker for early detection of NPC.
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Affiliation(s)
- Cheng Wu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Shan Peng
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Wei Sun
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Min Luo
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Beibei Su
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Dongbo Liu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Guoqing Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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Chen R, Wang Z, Lan R, Huang F, Chen J, Xu Y, Zhang H, Zhang L. Influence of POLG on Radiosensitivity of Nasopharyngeal Carcinoma Cells. Cancer Biother Radiopharm 2018; 33:146-154. [PMID: 29763377 DOI: 10.1089/cbr.2017.2346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND OBJECTIVE There is a high incidence of nasopharyngeal carcinoma (NPC), malignant head and neck tumors, in southern China. Radioresistance is the main cause affecting the efficacy of NPC treatments. The POLG gene particularly plays an important role in radiation-induced damage repair. In this study, the authors established RNAi CNE-1 and CNE-2 knockdown in two NPC cell lines to observe whether this gene affects the radiosensitivity of NPC cells. MATERIALS AND METHODS Four short hairpin RNA (shRNA) expression plasmids targeting POLG gene were constructed and transfected into the NPC cell lines CNE-1 and CNE-2. Screening was performed to evaluate the stable expression of cloned cells, which were named CNE-1/POLG-shRNA1, CNE-1/POLG-shRNA2, CNE-2/POLG-shRNA1, and CNE-2/POLG-shRNA2. The negative controls CNE-1/Neg-shRNA and CNE-2/Neg-shRNA were additionally used. The MTT method, flow cytometry, clone formation analysis, cell migration, and other experimental methods were employed to verify changes in the radiosensitivity of the NPC cells. RESULTS Fluorescent quantitative PCR and Western blot confirmed the downregulation of the PLOG gene through diminished PLOG messenger RNA and protein levels. Consequently, the authors report the stable knockdown of the POLG gene in an NPC model. Dose-dependent radiation exposure of POLG inhibited NPC cell growth and increased apoptosis compared with control cells (p < 0.01), as demonstrated through colony formation assay and flow cytometry. Functional assays indicated that knockdown of the POLG in CNE-1 and CNE-2 cells remarkably reduced cell viability and proliferation. Specifically, POLG knockdown led to G1 phase arrest and apoptosis. CONCLUSIONS Overall, the authors conclude that POLG downregulation alters the radiosensitivity of NPC cells, indicating that the gene is likely involved in conferring the radiation response of the cells. In addition, findings in this study suggest a novel role for POLG as a potential predictive marker for NPC radiotherapy efficiency. POLG gene can be used as a potential clinical target to effectively improve the radiosensitivity of NPC.
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Affiliation(s)
- Ruiqing Chen
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Zeng Wang
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Ruilong Lan
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Fei Huang
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Jinrong Chen
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Yuanteng Xu
- 4 Department of Otorhinolaryngology, First Affiliated Hospital of Fujian Medical University , Fuzhou, China
| | - Hengshan Zhang
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
| | - Lurong Zhang
- 1 Central Laboratory, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .,2 Key Lab of Radiation Biology, Fujian Universities , Fuzhou, China .,3 Fujian Key Lab of Individualized Active Immunotherapy , Fuzhou, China
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Jiang L, Xu G, Li Z, Zeng X, Li Z, Liu J, Mei L, Li X. RNAi-mediated knockdown of CAIX enhances the radiosensitivity of nasopharyngeal carcinoma cell line, CNE-2. Onco Targets Ther 2017; 10:4701-4709. [PMID: 29026318 PMCID: PMC5626387 DOI: 10.2147/ott.s144756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Although radiotherapy remains the most powerful as well as the primary treatment modality for nasopharyngeal carcinoma (NPC), approximately 20% of NPC patients still have local recurrence. Carbonic anhydrase IX (CAIX)-related signaling pathways that mediate radioresistance have been found in various kinds of cancer. However, the role of CAIX in NPC radioresistance is still unknown. In this study, we investigated the effect of CAIX silencing on sensitization to ionizing radiation in NPC by using Lipofectamine 2000, which delivers small interfering ribonucleic acid (siRNA) that targets CAIX. Results showed that Lipofectamine 2000 effectively delivered siRNA into the CNE-2 cells, which resulted in the decrease of CAIX expression and cell viability, decrease in cell proliferation and colony formation, and increase in the number of CNE-2 cells stuck in the G2/M phase of the cell cycle upon induction of ionizing radiation. Increased sensitivity of radiotherapy in CNE-2 cells under hypoxic conditions was correlated with the suppression of CAIX. Cells treated with irradiation in addition to CAIX-siRNA1 demonstrated reduced radiobiological parameters (survival fraction at 2 Gy [SF2]) compared with those treated with irradiation only, with a sensitization-enhancing ratio of 1.47. These findings suggest that CAIX can be a promising therapeutic target for the treatment of radioresistant human NPC.
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Affiliation(s)
- Liji Jiang
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
| | - Gang Xu
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
| | - Zihuang Li
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
| | - Xiaowei Zeng
- The Shenzhen Key Lab of Gene and Antibody Therapy, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen, People's Republic of China
| | - Zhuangling Li
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
| | - Jingwen Liu
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
| | - Lin Mei
- The Shenzhen Key Lab of Gene and Antibody Therapy, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen, People's Republic of China
| | - Xianming Li
- Department of Radiation Oncology, Second Clinical Medicine College of Jinan University, Shenzhen, Guangdong, People's Republic of China
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Jin C, Feng Y, Ni Y, Shan Z. MicroRNA-610 suppresses osteosarcoma oncogenicity via targeting TWIST1 expression. Oncotarget 2017; 8:56174-56184. [PMID: 28915582 PMCID: PMC5593553 DOI: 10.18632/oncotarget.17045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 03/24/2017] [Indexed: 12/20/2022] Open
Abstract
Osteosarcoma is the most frequent primary bone tumor affects adolescents and young adults. Recently, microRNAs (miRNAs) are short, non-coding and endogenous RNAs that played as important roles in the initiation and progression of tumors. In this study, we try to explore the biological function and expression of miR-610 in the osteosarcoma. We showed that miR-610 expression was downregulated in the osteosarcoma tissues and cell lines. Elevated expression of miR-610 suppressed the osteosarcoma cell proliferation, cell cycle, invasion and EMT program. Moreover, overexpression of miR-610 increased sensitivity of MG-63 and U2OS cells to cisplatin. Twist1 was identified as a direct target gene of miR-610 in the osteosarcoma cell. Furthermore, we demonstrated that Twist1 was upregulated in the osteosarcoma tissues and cell lines. The expression of Twist1 was negatively associated with the expression of miR-610 expression in the osteosarcoma tissues. Ectopic expression of Twist1 inhibited the sensitivity of miR-610-overexpressing MG-63 cells to cisplatin. We also showed that overexpression of Twist1 increased the proliferation and invasion of miR-610-overexpressing MG-63 cells. These data indicated that ectopic expression of miR-610 suppressed the osteosarcoma cell proliferation, cell cylce, invasion and increased the sensitivity of osteosarcoma cells to cisplatin through targeting the Twist1 expression.
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Affiliation(s)
- Chi Jin
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Yongjian Feng
- The Fourth Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Yongjian Ni
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Zhonglin Shan
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
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Zhang L, Peng S, Dai X, Gan W, Nie X, Wei W, Hu G, Guo J. Tumor suppressor SPOP ubiquitinates and degrades EglN2 to compromise growth of prostate cancer cells. Cancer Lett 2017; 390:11-20. [PMID: 28089830 DOI: 10.1016/j.canlet.2017.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 12/01/2016] [Accepted: 01/07/2017] [Indexed: 12/11/2022]
Abstract
EglN prolyl hydroxylases, a family of oxygen-sensing enzymes, hydroxylate distinct proteins to modulate diverse physiopathological signals. Aberrant regulations of EglNs result in multiple human diseases, including cancer. Different from EglN1 which function largely depends on the role of hypoxia-induce factor alpha (HIFα) in tumors, the functional significance and the upstream regulatory mechanisms of EglN2, especially in prostate cancer setting, remain largely unclear. Here, we demonstrated that dysregulation of EglN2 facilitated prostate cancer growth both in cells and in vivo. Notably, EglN2 was identified highly expressed in human prostate cancer tissues. Mechanically, Cullin 3-based E3 ubiquitin ligase SPOP, a well-characterized tumor suppressor in prostate cancer, could recognize and destruct EglN2. Meanwhile, androgen receptor (AR), playing a pivotal role in progression and development of prostate cancer, could transcriptionally up-regulate EglN2. Pathologically, SPOP loss-of-function mutations or AR amplification, frequently occurring in prostate cancers, could significantly accumulate EglN2 abundance. Therefore, our study not only underlines an oncogenic role of EglN2 in prostate cancer, but also highlights SPOP as a tumor suppressor to down-regulate EglN2 in prostate cancer.
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Affiliation(s)
- Linli Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China; Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Shan Peng
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Xiangpeng Dai
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Wenjian Gan
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Xin Nie
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Guoqing Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China.
| | - Jianping Guo
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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