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Rashwan HH, Taher AM, Hassan HA, Awaji AA, Kiriacos CJ, Assal RA, Youness RA. Harnessing the supremacy of MEG3 LncRNA to defeat gastrointestinal malignancies. Pathol Res Pract 2024; 256:155223. [PMID: 38452587 DOI: 10.1016/j.prp.2024.155223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Evidence suggests that long non-coding RNAs (lncRNAs) play a pivotal role in the carcinogenesis and progression of various human malignancies including gastrointestinal malignancies. This comprehensive review reports the functions and mechanisms of the lncRNA maternally expressed gene 3 (MEG3) involved in gastrointestinal malignancies. It summarizes its roles in mediating the regulation of cellular proliferation, apoptosis, migration, invasiveness, epithelial-to-mesenchymal transition, and drug resistance in several gastrointestinal cancers such as colorectal cancer, gall bladder cancer, pancreatic cancer, gastric cancer, esophageal cancer, cholangiocarcinoma, gastrointestinal stromal tumors and most importantly, hepatocellular carcinoma. In addition, the authors briefly highlight its implicated mechanistic role and interactions with different non-coding RNAs and oncogenic signaling cascades. This review presents the rationale for developing non coding RNA-based anticancer therapy via harnessing the power of MEG3 in gastrointestinal malignancies.
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Affiliation(s)
- H H Rashwan
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt; Bioinformatics Group, Center for Informatics Science (CIS), School of Information Technology and Computer Science (ITCS), Nile University, 12677, Giza, Egypt
| | - A M Taher
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - H A Hassan
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - A A Awaji
- Department of Biology, Faculty of Science, University College of Taymaa, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - C J Kiriacos
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - R A Assal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| | - R A Youness
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt.
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Wu Q, Xie J, Zhu X, He J. Runt-related transcription factor 3, mediated by DNA-methyltransferase 1, regulated Schwann cell proliferation and myelination during peripheral nerve regeneration via JAK/STAT signaling pathway. Neurosci Res 2023:S0168-0102(23)00008-1. [PMID: 36690210 DOI: 10.1016/j.neures.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023]
Abstract
Schwann cells (SCs) play a crucial role in peripheral nerve injury and regeneration. Recently, RUNX3 was found to be linked with neurological dysfunction. We examined the RUNX3 expression in sciatic nerve stumps with peripheral nerve injury of rats, cyclic adenosine monophosphate (cAMP)-induced SCs. MTT assay was applied to determine the proliferation of SCs. Cell migration and apoptosis were assessed using wound healing assay and flow cytometry. Subsequently, we detected the methylation level of RUNX3 using Methylation-specific PCR assay and verified its regulation by DNMT1. The RUNX3 expressions were increased in sciatic nerve stumps with peripheral nerve injury and cAMP-induced SCs differentiation, which were related to demethylation of its promoter region regulated by DNMT1. RUNX3 knockdown notably suppressed the proliferation and migration, and induced the cell apoptosis of SCs. Silencing of RUNX3 inhibited the cAMP-induced morphological changes of SCs and the increase of myelin-related proteins induced by cAMP in SCs, while RUNX3 overexpression exerted opposite effects. Besides, the overexpression of RUNX3 promoted the activation of JAK/STAT signaling to regulate SCs proliferation and myelination. Meanwhile, DNMT1 overexpression inhibited the expression of RUNX3, and cell proliferation and myelination. In conclusion, RUNX3 mediated by DNMT1 regulated SC proliferation and myelination via JAK/STAT signaling pathway.
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Affiliation(s)
- Qiufeng Wu
- Department of Neurosurgery, Xianyang Central Hospital, Xianyang, Shaanxi 712000, China
| | - Jiangtao Xie
- Department of Neurosurgery, Xianyang Central Hospital, Xianyang, Shaanxi 712000, China
| | - Xiaoli Zhu
- Department of Neurosurgery, Xianyang Central Hospital, Xianyang, Shaanxi 712000, China
| | - Juan He
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Xianyang, Xianyang, Shaanxi 712000, China.
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Xu X, Shen HR, Yu M, Du MR, Li XL. MicroRNA let-7i inhibits granulosa-luteal cell proliferation and oestradiol biosynthesis by directly targeting IMP2. Reprod Biomed Online 2022; 44:803-816. [PMID: 35339367 DOI: 10.1016/j.rbmo.2022.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 01/20/2022] [Accepted: 01/25/2022] [Indexed: 11/30/2022]
Abstract
RESEARCH QUESTION Increased granulosa cell division is associated with abnormal folliculogenesis in polycystic ovary syndrome (PCOS). Lethal-7i microRNA (let-7i) may play an important role in the follicular development and granulosa cell growth; therefore is let-7i involved in PCOS pathogenesis? DESIGN The expression of let-7i was measured in granulosa-luteal cells (GLC) from women with or without PCOS. A human granulosa cell line, KGN, was used for the functional study. Mimics and inhibitors of let-7i, lentiviruses expressing insulin-like growth factor 2 mRNA binding protein (IMP2), and small-interfering RNAs were transfected into KGN cells. KGN cell proliferation was determined by 5-ethynyl-2'-deoxyuridine (EdU) and Cell Counting Kit-8 (CCK-8) assays. The cell cycle and apoptosis were assessed by propidium iodide-annexin V (PI-A) staining and fluorescence-activated cell sorting. Oestradiol concentration was determined by enzyme-linked immunoassay. Bioinformatics analysis and luciferase reporter assay were applied to confirm the let-7i target genes. RESULTS The study showed that let-7i was down-regulated in PCOS GLC (P = 0.001). Mimics of let-7i inhibited KGN proliferation (P = 0.001), and decreased aromatase expression (P = 0.030) and oestradiol production (P = 0.029), whereas let-7i inhibitors had the opposite effect. Bioinformatics analysis and quantitative real-time (qRT) PCR identified IMP2 as a target of let-7i (P = 0.021). qRT-PCR and western blot analysis indicated that IMP2 was up-regulated in GLC in women with PCOS (P = 0.001 and P = 0.044), and IMP2 expression was suppressed by let-7i in KGN cells (P < 0.001). Luciferase reporter assay results (P = 0.002), combined with the rescue assay, confirmed that let-7i inhibited KGN cell proliferation and reduced oestradiol concentration by directly targeting IMP2. CONCLUSIONS let-7i was down-regulated in PCOS GLC. Overexpression of let-7i inhibited KGN cell proliferation and decreased oestradiol production in an IMP2-dependent manner, providing a new molecular mechanism for PCOS.
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Affiliation(s)
- Xiao Xu
- Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China
| | - Hao-Ran Shen
- Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China
| | - Min Yu
- Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China
| | - Mei-Rong Du
- Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China.
| | - Xue-Lian Li
- Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University Shanghai, People's Republic of China.
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Zeng Y, Rong H, Xu J, Cao R, Li S, Gao Y, Cheng B, Zhou T. DNA Methylation: An Important Biomarker and Therapeutic Target for Gastric Cancer. Front Genet 2022; 13:823905. [PMID: 35309131 PMCID: PMC8931997 DOI: 10.3389/fgene.2022.823905] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/07/2022] [Indexed: 12/12/2022] Open
Abstract
Gastric cancer (GC) is a very common malignancy with a poor prognosis, and its occurrence and development are closely related to epigenetic modifications. Methylation of DNA before or during gastric cancer is an interesting research topic. This article reviews the studies on DNA methylation related to the cause, diagnosis, treatment, and prognosis of gastric cancer and aims to find cancer biomarkers to solve major human health problems.
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Affiliation(s)
- Yunqing Zeng
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Huimin Rong
- Department of Reconstructive Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jianwei Xu
- Department of Pancreatic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ruyue Cao
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shuhua Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yanjing Gao
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Baoquan Cheng
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tao Zhou
- Department of Geriatric Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Tao Zhou,
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GAO J, MENG C, GUAN L, ZHANG H, ZHANG W. Astragaloside IV promotes cardiac remodeling after myocardial infarction by inhibiting DNMT3B-mediated Runx3 methylation via downregulating LncRNA MIRT1 expression. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.44721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jing GAO
- The First Affiliated Hospital of Kangda College of Nanjing Medical University, China
| | - Chunming MENG
- The First Affiliated Hospital of Kangda College of Nanjing Medical University, China
| | - Li GUAN
- The First Affiliated Hospital of Kangda College of Nanjing Medical University, China
| | | | - Wei ZHANG
- Navy Qingdao Special Service Convalescent Center,, China
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Wang D, Guo C, Li Y, Zhou M, Wang H, Liu J, Chen P. Oestrogen up-regulates DNMT1 and leads to the hypermethylation of RUNX3 in the malignant transformation of ovarian endometriosis. Reprod Biomed Online 2021; 44:27-37. [PMID: 34799276 DOI: 10.1016/j.rbmo.2021.06.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/05/2021] [Accepted: 06/17/2021] [Indexed: 01/01/2023]
Abstract
RESEARCH QUESTION What is the mechanism of hypermethylation of runt-related transcription factor 3 (RUNX3) in the eutopic endometrium of endometriosis as biomarker in the malignant transformation of endometriosis? DESIGN Methylation-specific polymerase chain reaction was used to analyse the methylation status of RUNX3 in endometriosis-associated ovarian cancer (EAOC). Primary eutopic endometrial stromal cells (ESC) were isolated from the uteri of patients with ovarian endometriosis. After RUNX3 knockdown by RNA interference technology or ESC treated with oestradiol, the proliferation and invasion ability were evaluated in ESC by using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and transwell assays. RESULTS The frequency of methylation of RUNX3 in neoplastic tissue in the EAOC group was significantly higher than that in the ectopic endometrium of the endometriosis group (P < 0.001), and the frequency of methylation of RUNX3 in the eutopic endometrium of the EAOC group was significantly higher than that in the endometriosis group (P < 0.001). However, there was no significant difference in the eutopic endometrium when compared between the endometriosis group and the control endometrium group (P = 0.233). Silencing RUNX3 promoted the proliferation and invasion of ESC (P < 0.001 and P < 0.001). Following intervention with oestrogen, it was observed that the oestradiol group showed higher levels of RUNX3 methylation (P < 0.001) and DNA methyltransferase 1 (DNMT1) mRNA and protein expression (P < 0.001 and P < 0.001), and lower RUNX3 mRNA and protein expression when compared with the ESC group (P < 0.001 and P < 0.001). CONCLUSION This study demonstrated that hypermethylation of the RUNX3 was related to the malignant transformation of endometriosis and that this process was related to corresponding changes in the eutopic endometrium. Furthermore, the 'oestrogen-DNMT1' signalling pathway may induce the hypermethylation of RUNX3 to promote the malignant transformation of endometriosis.
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Affiliation(s)
- Danbo Wang
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China.
| | - Cuishan Guo
- Department of Gynecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang Liaoning Province 110004, People's Republic of China
| | - Yan Li
- Department of Gynecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang Liaoning Province 110004, People's Republic of China.
| | - Mingyi Zhou
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Huimin Wang
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Jing Liu
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Peng Chen
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
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Yadav P, Bandyopadhayaya S, Ford BM, Mandal C. Interplay between DNA Methyltransferase 1 and microRNAs During Tumorigenesis. Curr Drug Targets 2021; 22:1129-1148. [PMID: 33494674 DOI: 10.2174/1389450122666210120141546] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/16/2020] [Accepted: 10/18/2020] [Indexed: 01/18/2023]
Abstract
Cancer is a genetic disease resulting from genomic changes; however, epigenetic alterations act synergistically with these changes during tumorigenesis and cancer progression. Epigenetic variations are gaining more attention as an important regulator in tumor progression, metastasis and therapy resistance. Aberrant DNA methylation at CpG islands is a central event in epigeneticmediated gene silencing of various tumor suppressor genes. DNA methyltransferase 1 (DNMT1) predominately methylates at CpG islands on hemimethylated DNA substrates in proliferation of cells. DNMT1 has been shown to be overexpressed in various cancer types and exhibits tumor-promoting potential. The major drawbacks to DNMT1-targeted cancer therapy are the adverse effects arising from nucleoside and non-nucleoside based DNMT1 inhibitors. This paper focuses on the regulation of DNMT1 by various microRNAs (miRNAs), which may be assigned as future DNMT1 modulators, and highlights how DNMT1 regulates various miRNAs involved in tumor suppression. Importantly, the role of reciprocal inhibition between DNMT1 and certain miRNAs in tumorigenic potential is approached in this review. Hence, this review seeks to project an efficient and strategic approach using certain miRNAs in conjunction with conventional DNMT1 inhibitors as a novel cancer therapy. It has also been pinpointed to select miRNA candidates associated with DNMT1 regulation that may not only serve as potential biomarkers for cancer diagnosis and prognosis, but may also predict the existence of aberrant methylation activity in cancer cells.
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Affiliation(s)
- Pooja Yadav
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh- 305817, Ajmer, Rajasthan, India
| | - Shreetama Bandyopadhayaya
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh- 305817, Ajmer, Rajasthan, India
| | - Bridget M Ford
- Department of Biology, University of the Incarnate Word, San Antonio, TX 78209, United States
| | - Chandi Mandal
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh- 305817, Ajmer, Rajasthan, India
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Chen Q, Wang Y, Dang H, Wu X. MicroRNA-148a-3p inhibits the proliferation of cervical cancer cells by regulating the expression levels of DNMT1 and UTF1. Oncol Lett 2021; 22:617. [PMID: 34257725 DOI: 10.3892/ol.2021.12878] [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: 01/31/2021] [Accepted: 05/21/2021] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRs) serve a key role in carcinogenesis. miR-148a-3p has been demonstrated to act as a tumor suppressor in several tumors, such as epithelial ovarian cancer and esophageal cancer. However, to the best of our knowledge, the role of miR-148a-3p in cervical cancer remains unclear. In the present study, the expression levels of miR-148a-3p measured by reverse transcription-quantitative PCR were significantly decreased in cervical cancer tissues compared with that in normal cervical tissues. Furthermore, overexpression of miR-148a-3p markedly suppressed the proliferation of cervical cancer cells. The luciferase reporter assay demonstrated that DNA methyltransferase 1 (DNMT1) was the target gene of miR-148a-3p and that its expression measured by western blotting was inhibited by miR-148a-3p in cervical cancer cells. Correlation analysis highlighted that the expression levels of the undifferentiated embryonic cell transcription factor-1 (UTF1) were negatively associated with the expression levels of DNMT1 in cervical cancer tissues. Furthermore, DNMT1 knockdown increased the expression of UTF1 and decreased the methylation level of UTF1 promoter. These data demonstrated the expression levels of UTF1 were regulated by DNMT1 methylation in cervical cancer cells. Collectively, the results of the present study suggested that miR-148a-3p may inhibit the proliferation of cervical cancer cells by regulating the expression levels of DNMT1/UTF1, which provides potential therapeutic targets for cervical cancer.
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Affiliation(s)
- Qing Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yidong Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Huimin Dang
- Department of Integrated Traditional Chinese and Western Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xiaoling Wu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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Feng X, Zhu M, Liao B, Tian T, Li M, Wang Z, Chen G. Upregulation of miR-552 Predicts Unfavorable Prognosis of Gastric Cancer and Promotes the Proliferation, Migration, and Invasion of Gastric Cancer Cells. Oncol Res Treat 2020; 43:103-111. [PMID: 31958799 DOI: 10.1159/000505377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/10/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Accumulating evidence indicates that micro-RNAs play a key role in tumor progression and prognosis. However, the overall biological role and clinical significance of microRNA-552 (miR-552) in the pathogenesis of gastric cancer (GC) remain unclear. METHODS miR-552 expression was measured in 122 pairs of cancerous and noncancerous tissues and cell lines by quantitative real-time polymerase chain reaction. The relationship between miR-552 and the clinical parameters of patients was analyzed by the χ2 test; Kaplan-Meier analysis and multivariate Cox regression analysis were used to predict the overall survival time and prognosis of patients with different expression of miR-552. Finally, CCK-8 and Transwell were used to detect the changes in cell proliferation, migration, and invasion ability. RESULTS miR-552 was expressed at markedly high levels in GC tissues compared to normal tissues and in some GC cell lines (p < 0.001). The upregulation of miR-552 was significantly associated with tumors with advanced TNM stage (p = 0.026), lymph node metastasis (p = 0.018), intestinal metaplasia (p = 0.044), and genomically stable subtype (p = 0.035). Moreover, GC patients with high miR-552 expression showed shorter overall survival (log-rank test, p = 0.011) than those with low expression. Meanwhile, miR-552 was an independent prognostic factor for GC patients (HR 5.657, 95% CI 1.619-19.761, p = 0.007). Finally, miR-552 overexpression promoted the proliferation, migration, and invasion of GC cells (p < 0.01). CONCLUSION Taken together, our results indicate that miR-552, as an oncogene of GC, can promote cell proliferation, migration, and invasion, and miR-552 may be a novel prognostic biomarker for GC.
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Affiliation(s)
- Xiaobo Feng
- Department of Diagnosis and Treatment of Gastrointestinal Disease, Shanghai No. 7 People's Hospital, Shanghai, China
| | - Mei Zhu
- Department of Administration and General Family Medicine, Jinqiao Community Health Service Center in Pudong New Area, Shanghai, China
| | - Bingling Liao
- Department of Diagnosis and Treatment of Gastrointestinal Disease, Shanghai No. 7 People's Hospital, Shanghai, China
| | - Tianning Tian
- Emergency Trauma Center, Shanghai No. 7 People's Hospital, Shanghai, China
| | - Minhong Li
- Department of Diagnosis and Treatment of Gastrointestinal Disease, Shanghai No. 7 People's Hospital, Shanghai, China
| | - Zhibo Wang
- Department of Diagnosis and Treatment of Gastrointestinal Disease, Shanghai No. 7 People's Hospital, Shanghai, China
| | - Guoyan Chen
- Department of Diagnosis and Treatment of Gastrointestinal Disease, Shanghai No. 7 People's Hospital, Shanghai, China,
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Up-regulation of miRNA-148a inhibits proliferation, invasion, and migration while promoting apoptosis of cervical cancer cells by down-regulating RRS1. Biosci Rep 2019; 39:BSR20181815. [PMID: 30910849 PMCID: PMC6505193 DOI: 10.1042/bsr20181815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/03/2019] [Accepted: 03/04/2019] [Indexed: 02/07/2023] Open
Abstract
The purpose of the present study is to figure out the role of miRNA-148a (miR-148a) in growth, apoptosis, invasion, and migration of cervical cancer cells by binding to regulator of ribosome synthesis 1 (RRS1). Cervical cancer and adjacent normal tissues, as well as cervical cancer cell line Caski, HeLa, C-33A, and normal cervical epithelial cell line H8 were obtained to detect the expression of miR-148a and RRS1. Relationship between miR-148a and RRS1 expression with clinicopathological characteristics was assessed. The selected Caski and HeLa cells were then transfected with miR-148a mimics, miR-148a inhibitors or RRS1 siRNA to investigate the role of miR-148a and RRS1 on proliferation, apoptosis, colony formation, invasion, and migration abilities of cervical cancer cells. Bioinformatics information and dual luciferase reporter gene assay was for used to detect the targetting relationship between miR-148a and RRS1. Down-regulated miR-148a and up-regulated RRS1 were found in cervical cancer tissues and cells. Down-regulated miR-148a and up-regulated RRS1 are closely related with prognostic factors of cervical cancer. RRS1 was determined as a target gene of miR-148a and miR-148a inhibited RRS1 expression in cervical cancer cells. Up-regulation of miR-148a inhibited cell proliferation, migration, and invasion while promoting apoptosis in Caski and HeLa cells. Our study suggests that miR-148a down-regulates RRS1 expression, thereby inhibiting the proliferation, migration, and invasion while promoting cell apoptosis of cervical cancer cells.
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Fattahi S, Golpour M, Amjadi-Moheb F, Sharifi-Pasandi M, Khodadadi P, Pilehchian-Langroudi M, Ashrafi GH, Akhavan-Niaki H. DNA methyltransferases and gastric cancer: insight into targeted therapy. Epigenomics 2018; 10:1477-1497. [PMID: 30325215 DOI: 10.2217/epi-2018-0096] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Gastric cancer is a major health problem worldwide occupying most frequent causes of cancer-related mortality. In addition to genetic modifications, epigenetic alterations catalyzed by DNA methyltransferases (DNMTs) are a well-characterized epigenetic hallmark in gastric cancer. The reversible nature of epigenetic alterations and central role of DNA methylation in diverse biological processes provides an opportunity for using DNMT inhibitors to enhance the efficacy of chemotherapeutics. In this review, we discussed key factors or mechanisms such as SNPs, infections and genetic modifications that trigger DNMTs level modification in gastric cancer, and their potential roles in cancer progression. Finally, we focused on how inhibitors of the DNMTs can most effectively be used for the treatment of gastric cancer with multidrug resistance.
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Affiliation(s)
- Sadegh Fattahi
- Cellular & Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, 4717647745, Babol, Iran.,North Research Center, Pasteur Institute, Amol, 4615885399, Iran
| | - Monireh Golpour
- Molecular & Cell Biology Research Center, Student Research Committee, Faculty of Medicine, Mazandaran University of Medical Science, Sari, 4817844718, Iran
| | - Fatemeh Amjadi-Moheb
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
| | - Marzieh Sharifi-Pasandi
- Molecular & Cell Biology Research Center, Student Research Committee, Faculty of Medicine, Mazandaran University of Medical Science, Sari, 4817844718, Iran
| | - Parastesh Khodadadi
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
| | | | - Gholam Hossein Ashrafi
- School of Life Science, Pharmacy & Chemistry, SEC Faculty, Cancer Theme, Kingston University London, Kingston upon Thames, London KT1 2EE, UK
| | - Haleh Akhavan-Niaki
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
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RUNX3 inhibits glioma survival and invasion via suppression of the β-catenin/TCF-4 signaling pathway. J Neurooncol 2018; 140:15-26. [PMID: 29916101 DOI: 10.1007/s11060-018-2927-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 06/09/2018] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Runt-related transcription factor 3 (RUNX3) exerts a tumor suppressor gene associated with gastric and other cancers, including glioma. However, how its anti-tumor mechanism in functions glioma is unclear. METHODS We assayed expression of RUNX3 with a tissue microarray (TMA), frozen cancer tissues and malignant glioma cell lines using immunohistochemistry, qRT-PCR and Western bolt analysis. Cell proliferation, invasion, cell cycle distribution and apoptosis were also examined to confirm the effect of RUNX3 medicated malignant phenotype. TOP/FOP experiment was used to detect the β-catenin/Tcf-4 transcription activity by RUNX3. RESULTS Enforced RUNX3 expression inhibited proliferation and invasion, induced cell cycle arrest and promoted apoptosis in vitro and in vivo, Bim siRNA partically reversed the effect of RUNX3-induced apoptosis in LN229 and U87 cells, suggesting a dependent role of Bim-caspase pathway. Moreover, Mechanism investigations revealed that restoration of RUNX3 suppressed β-catenin/Tcf-4 transcription activity. CONCLUSIONS RUNX3 plays a pivotal role in glioma initiation and progression as a tumor suppressor via attenuation of Wnt signaling, highlighting it as a potential therapeutic target for glioma.
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Zhou Z, Lin Z, Pang X, Tariq MA, Ao X, Li P, Wang J. Epigenetic regulation of long non-coding RNAs in gastric cancer. Oncotarget 2018; 9:19443-19458. [PMID: 29721215 PMCID: PMC5922409 DOI: 10.18632/oncotarget.23821] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 10/25/2017] [Indexed: 12/14/2022] Open
Abstract
Gastric cancer is one of the most common cancers and is the second leading cause of cancer mortality worldwide. Therefore, it is urgent to explore new molecular biomarkers for early diagnosis, early treatment and prognosis for gastric cancer patients. Recently, increasing evidence has shown that epigenetic changes, such as aberrant DNA methylation, histone modifications, and noncoding RNAs (ncRNAs) expression, play substantial roles in the development and progression of malignancies. Among these changes, long non-coding RNAs (lncRNAs), a novel class of ncRNAs, are emerging as highly versatile actors in a variety of cellular processes by regulating gene expression at the epigenetic level as well as at the transcriptional and post-transcriptional levels. Hundreds of lncRNAs become dysregulated in the various pathological processes of gastric cancer, and multiple lncRNAs have been reported to function as tumor-suppressors or oncogenes, although the underlying mechanisms are still under investigation. Here, we provide an overview of the epigenetic regulation of chromatin and the molecular functions of lncRNAs; we focus on lncRNA-mediated epigenetic regulation of cancer-related gene expression in gastric cancer, as well as discuss the clinical implications of lncRNAs on epigenetic-related cancer treatments, which may contribute helpful approaches for the development of new potential strategies for future diagnosis and therapeutic intervention in human cancers.
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Affiliation(s)
- Zhixia Zhou
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Zhijuan Lin
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Xin Pang
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Muhammad Akram Tariq
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Xiang Ao
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Peifeng Li
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Jianxun Wang
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
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Wu YC, Liu X, Wang JL, Chen XL, Lei L, Han J, Jiang YS, Ling ZQ. Soft-shelled turtle peptide modulates microRNA profile in human gastric cancer AGS cells. Oncol Lett 2017; 15:3109-3120. [PMID: 29435044 DOI: 10.3892/ol.2017.7692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 07/14/2017] [Indexed: 12/15/2022] Open
Abstract
Cancer prevention using natural micronutrition on epigenetic mechanisms primarily revolves around plant extracts. However, the role of macronutrition, including animal peptides, on epigenetic modification in cancer has been elusive. In traditional Chinese medicine, the soft-shelled turtle has a long-history of being a functional food that strengthens immunity through unknown mechanisms. The present study aimed to investigate the impact of soft-shelled turtle peptide on microRNA (miRNA) expression in gastric cancer (GC) cells and to analyze the potential anticancer mechanisms for GC. Affymetrix GeneChip miRNA 3.0 Array and quantitative polymerase chain reaction were used to detect the miRNA expression profile in human GC AGS cells treated with the soft-shelled turtle peptide. The results demonstrated that 101 miRNAs (49 upregulated miRNAs and 52 downregulated miRNAs) were significantly differentially expressed in the AGS cells following soft-shelled turtle peptide treatment. Several tumor suppressor miRNAs were upregulated markedly, including miRNA-375, let-7d, miRNA-429, miRNA-148a/148b and miRNA-34a. Pathway analysis indicated that soft-shelled turtle peptide may function with anticancer properties through the Hippo signaling pathway and the forkhead box O signaling pathway. Therefore, these results demonstrated that soft-shelled turtle peptide has the capacity to influence cancer-related pathways through the regulation of miRNA expression in GC cells.
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Affiliation(s)
- Yi-Chen Wu
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - Xiang Liu
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - Jiu-Li Wang
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - Xiang-Liu Chen
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - Lan Lei
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - Jing Han
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
| | - You-Shui Jiang
- Zhejiang Agricultural Group Co., Ltd., Hangzhou, Zhejiang 310021, P.R. China
| | - Zhi-Qiang Ling
- Zhejiang Cancer Research Institute, Zhejiang Province Cancer Hospital, Zhejiang Cancer Center, Hangzhou, Zhejiang 310022, P.R. China
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15
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Wang P, Li X, Cao L, Huang S, Li H, Zhang Y, Yang T, Jiang J, Shi D. MicroRNA-148a overexpression improves the early development of porcine somatic cell nuclear transfer embryos. PLoS One 2017; 12:e0180535. [PMID: 28665977 PMCID: PMC5493425 DOI: 10.1371/journal.pone.0180535] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 06/02/2017] [Indexed: 12/15/2022] Open
Abstract
Incomplete epigenetic reprogramming of donor cell nuclei is one of the main contributors to the low efficiency of somatic cell nuclear transfer (SCNT). To improve the success of SCNT, somatic cell DNA methylation levels must be reduced to those levels found in totipotent embryonic cells. Recent studies have demonstrated that miR-148a can affect DNA methylation via DNMT1 modulation in various cancers. Therefore, the focus of this study was to examine the influence of miR-148a on DNA methylation in donor cells and in SCNT embryo development. Thus, a stable cell line overexpressing miR-148a was established and used to produce SCNT embryos. Upon examination, DNMT1 was found to be a miR-148a target in porcine fetal fibroblasts (PFF). Furthermore, miR-148a overexpression in PFFs significantly decreased DNMT1 expression and global DNA methylation levels (P < 0.05). Moreover, miRNA-148a expression levels in SCNT embryos were significantly lower at the 2-cell and 4-cell stages when compared to IVF and parthenogenetic embryos. The group overexpressing miRNA-148a also showed a significant increase in blastocyst formation and total cell numbers (P < 0.05). Additionally, miR-148a overexpression altered the immunofluorescence signal of 5-mC and H3K9ac, and enhanced pluripotent gene (Oct4 and Nanog) expression levels during embryo development. These results indicate that miR-148a overexpression enhances the developmental potential of SCNT embryos and modifies epigenetic status.
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Affiliation(s)
- Ping Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
- * E-mail: (XPL); (DSS)
| | - Lihua Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Haiyan Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yan Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Ting Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jianrong Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
- * E-mail: (XPL); (DSS)
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Lorenzon L, Cippitelli C, Avantifiori R, Uccini S, French D, Torrisi MR, Ranieri D, Mercantini P, Canu V, Blandino G, Cavallini M. Down-regulated miRs specifically correlate with non-cardial gastric cancers and Lauren's classification system. J Surg Oncol 2017; 116:184-194. [PMID: 28475823 DOI: 10.1002/jso.24648] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 03/22/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVES Gastric cancers are usually characterized using Lauren's classification into intestinal and diffuse types. We previously documented the down-modulation of miR31, miR148a, miR204, and miR375 in gastric cancers. We aimed this manuscript to investigate these miRs with the end-points of diagnosis, Lauren's classification and prognosis. METHODS A total of 117 resected non-cardial adenocarcinomas were evaluated for miRs' expressions. The performance of miRs' expressions for cancer diagnosis was tested using ROC curves. Logistic regression was conducted with the end-point of Lauren's classification. Kaplan-Meier and Cox analyses were performed for OS, DFS, and DSS. miRs' targets were reviewed using PRISMA method and BCL-2 was further investigated in cell lines. RESULTS ROC curves documented that miRs' down-modulation was significant in differentiating cancer versus normal tissues. Diffuse type cancers were associated with female sex, young age, and miR375 higher expression. We confirmed BCL-2 as a miR204 target. However, survival analyses confirmed the pathologic criteria (advanced stages, LNR, and low LNH) as the significant variables correlated to worse prognosis. CONCLUSIONS The down-modulation of miR31, miR148a, miR204, and miR375 is significantly associated with non-cardial gastric cancers and miR375 is specifically linked to Lauren's classification. Nevertheless, standard pathological features display as the independent variables associated with worse prognosis.
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Affiliation(s)
- Laura Lorenzon
- Faculty of Medicine and Psychology, Surgical and Medical Department of Traslational Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Claudia Cippitelli
- Faculty of Medicine and Psychology, Department of Clinical and Molecular Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Riccardo Avantifiori
- Faculty of Medicine and Psychology, Surgical and Medical Department of Traslational Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Stefania Uccini
- Faculty of Medicine and Psychology, Department of Clinical and Molecular Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Deborah French
- Faculty of Medicine and Psychology, Department of Clinical and Molecular Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Maria Rosaria Torrisi
- Faculty of Medicine and Psychology, Department of Clinical and Molecular Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Danilo Ranieri
- Faculty of Medicine and Psychology, Department of Clinical and Molecular Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Paolo Mercantini
- Faculty of Medicine and Psychology, Surgical and Medical Department of Traslational Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Valeria Canu
- Italian National Cancer Institute Regina Elena, Translational Oncogenomic Unit, Rome, Italy
| | - Giovanni Blandino
- Faculty of Medicine and Psychology, Surgical and Medical Department of Traslational Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
| | - Marco Cavallini
- Faculty of Medicine and Psychology, Surgical and Medical Department of Traslational Medicine, University of Rome "La Sapienza", Sant'Andrea Hospital of Rome, Rome, Italy
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17
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Kim EA, Kim TG, Sung EG, Song IH, Kim JY, Doh KO, Lee TJ. miR-148a increases the sensitivity to cisplatin by targeting Rab14 in renal cancer cells. Int J Oncol 2017; 50:984-992. [DOI: 10.3892/ijo.2017.3851] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 01/11/2017] [Indexed: 11/06/2022] Open
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18
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Jili S, Eryong L, Lijuan L, Chao Z. RUNX3 inhibits laryngeal squamous cell carcinoma malignancy under the regulation of miR-148a-3p/DNMT1 axis. Cell Biochem Funct 2016; 34:597-605. [PMID: 27859417 DOI: 10.1002/cbf.3233] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/07/2016] [Accepted: 10/07/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Su Jili
- Department of Otorhinolaryngology, Head and Neck Surgery; The first Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology; Luoyang 471003 China
| | - Lu Eryong
- Department of Otorhinolaryngology, Head and Neck Surgery; The first Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology; Luoyang 471003 China
| | - Lu Lijuan
- Department of Obstetrics and Gynecology; The first Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology; Luoyang 471003 China
| | - Zhang Chao
- Department of Otorhinolaryngology, Head and Neck Surgery; The first Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology; Luoyang 471003 China
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19
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Li Y, Deng X, Zeng X, Peng X. The Role of Mir-148a in Cancer. J Cancer 2016; 7:1233-41. [PMID: 27390598 PMCID: PMC4934031 DOI: 10.7150/jca.14616] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 05/07/2016] [Indexed: 12/16/2022] Open
Abstract
MicroRNAs (miRNAs) are highly conserved noncoding RNAs of about 19-25 nucleotides. Through specifically pairing with complementary sites in 3' untranslated regions (UTRs) of target mRNAs, they mediate post-transcriptional silencing. MicroRNAs have been implicated in many physiological processes including proliferation, differentiation, development, apoptosis, and metabolism. In recent years many studies have revealed that the aberrant expression of miRNA is closely related to oncogenesis and is now an intense field of study. Mir-148a is aberrantly expressed in various cancers and has been identified as an oncogenic or tumor suppressor with crucial roles in the molecular mechanisms of oncogenesis. In this review, we have summarized the role of mir-148a in the oncogenic pathways of gastric, liver, breast and urogenital cancers, and in neurogliocytoma oncogenesis. Studying the functional role of mir-148a is crucial in discovering novel tumor molecular markers and identifying potential therapeutic targets.
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Affiliation(s)
- Yue Li
- 1. Department of Pathology and Pathophysiology, Hunan Normal University Medical School, Changsha 410013, Hunan, China
| | - Xiyun Deng
- 1. Department of Pathology and Pathophysiology, Hunan Normal University Medical School, Changsha 410013, Hunan, China
| | - Xiaomin Zeng
- 2. Department of Statistics and Epidemiology, Public Health School, Central South University, Changsha 410078, Hunan, China
| | - Xiaoning Peng
- 1. Department of Pathology and Pathophysiology, Hunan Normal University Medical School, Changsha 410013, Hunan, China
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20
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Qingjuan L, Xiaojuan F, Wei Z, Chao W, Pengpeng K, Hongbo L, Sanbing Z, Jun H, Min Y, Shuxia L. miR-148a-3poverexpression contributes to glomerular cell proliferation by targeting PTEN in lupus nephritis. Am J Physiol Cell Physiol 2016; 310:C470-8. [DOI: 10.1152/ajpcell.00129.2015] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 12/29/2015] [Indexed: 11/22/2022]
Abstract
The objective of this study was to investigate the role of miR-148a-3p in lupus nephritis (LN) based on data from previous studies and a microRNA assay. We evaluated the miR-148a-3p expression level in LN renal tissues and blood serum to determine its clinicopathological significance and effect on glomerular cell proliferation. Then, we collected renal glomeruli from LN mice and determined the miR-148a-3p, proliferating cell nuclear antigen (PCNA), and PCNA/Thy1 expression. We performed functional analyses of miR-148a-3p in vitro and in vivo. We also investigated the target gene of miR-148a-3p in LN. The results showed that miR-148a-3p expression levels were significantly higher not only in glomeruli but also in the blood serum during LN and increased in the glomeruli of LN mice and that at the same time there was positive correlation between miR-148a-3p and PCNA expression of glomruli. Overexpression of miR-148a-3p accelerated cell proliferation and PCNA expression, while a miR-148a-3p inhibitor inhibited cell proliferation via the Akt/cyclin D1 pathway. Furthermore, miR-148a-3p overexpression reduced the phosphatase and tensin homology deleted on chromosome ten (PTEN) expression level, while miR-148a-3p silencing increased its expression in high-mobility group box 1 (HMGB1)-induced mouse mesangial cells (MMCs). Luciferase assays demonstrated that miR-148a-3p could directly bind to the PTEN 3′-UTR. PTEN overexpression inhibited MMC proliferation considerably, resembling the results observed during miR-148a-3p inhibition. Reducing miR-148a-3p expression upregulated PTEN in the glomeruli and improved renal function in LN mice. Thus miR-148a-3p may promote proliferation and contribute to LN progression by targeting PTEN.
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Affiliation(s)
- Liu Qingjuan
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Feng Xiaojuan
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Zhang Wei
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Wu Chao
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Kang Pengpeng
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Li Hongbo
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Zhang Sanbing
- Department of Hand and Foot Surgery, Third Hospital of Shijiazhuang City, Shijiazhuang, China; and
| | - Hao Jun
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
| | - Yang Min
- Department of Pathology, Shijiazhuang people's medical college, Shijiazhuang, China
| | - Liu Shuxia
- Department of Pathology, Hebei Medical University, Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, China
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Ma L, Xu Z, Xu C, Jiang X. MicroRNA-148a represents an independent prognostic marker in bladder cancer. Tumour Biol 2015; 37:7915-20. [PMID: 26700670 DOI: 10.1007/s13277-015-4688-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 12/16/2015] [Indexed: 12/18/2022] Open
Abstract
A previous study has demonstrated the roles of microRNA-148a (miR-148a) on apoptosis of bladder cancer cells. The goal of this study was to investigate whether the miR-148a expression level could serve as a new biomarker for the prognosis of bladder cancer patients. We collected a total of 126 bladder cancer samples. The expression level of miR-148a was determined with quantitative real-time polymerase chain reaction (qRT-PCR). Kaplan-Meier method was used to analyze the overall survival. Cox regression analysis was further used to identify prognostic factors. The expression levels of miR-148a in bladder cancer tissues were identified (1.5 ± 0.3; P < 0.001). The bladder cancer patients in the low-expression group more frequently had a high tumor grade (P = 0.025), increased tumor recurrence (P = 0.002), and advanced lymph node (LN) metastasis (P = 0.001). Patient survival analysis revealed a clear positive correlation between miR-148a expression level and survival time of bladder cancer patients (P = 0.005, log-rank = 7.714). In univariate Cox proportional hazards regression analysis, we found that a low-expression level of miR-148a (P = 0.018), tumor grade (P = 0.006), lymph node metastasis (P = 0.001), and recurrence (P < 0.001) were associated with the prognosis of bladder cancer. In multivariate analysis, we found that miR-148a expression (RR = 0.206, 95 % CI 0.095-0.813, P = 0.029), tumor grade (RR = 0.714, 95 % CI 0.224-0.958, P = 0.714), lymph node metastasis (RR = 6.604, 95 % CI 3.192-12.547, P < 0.001), and recurrence (RR = 15.126, 95 % CI 6.714-22.025, P < 0.001) retained significance as an independent prognostic factor of bladder cancer survival (Table 3). All results have showed that miR-148a expression was decreased in bladder cancer specimens and reduced miR-148a expression was associated with poorer survival time, indicating that miR-148a may become a candidate factor for predicting the prognosis of bladder cancer.
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Affiliation(s)
- Lin Ma
- Department of Urology, Qilu Hospital of Shan Dong University, No. 107 Wenhuaxi Road, Jinan City, 250012, China
| | - Zhishun Xu
- Department of Urology, Qilu Hospital of Shan Dong University, No. 107 Wenhuaxi Road, Jinan City, 250012, China
| | - Chao Xu
- Department of Urology, Reproductive Hospital Affiliated to Shandong University, Jinan, China
| | - Xianzhou Jiang
- Department of Urology, Qilu Hospital of Shan Dong University, No. 107 Wenhuaxi Road, Jinan City, 250012, China.
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Yang Q, Zhang RW, Sui PC, He HT, Ding L. Dysregulation of non-coding RNAs in gastric cancer. World J Gastroenterol 2015; 21:10956-10981. [PMID: 26494954 PMCID: PMC4607897 DOI: 10.3748/wjg.v21.i39.10956] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is one of the most common cancers in the world and a significant threat to the health of patients, especially those from China and Japan. The prognosis for patients with late stage GC receiving the standard of care treatment, including surgery, chemotherapy and radiotherapy, remains poor. Developing novel treatment strategies, identifying new molecules for targeted therapy, and devising screening techniques to detect this cancer in its early stages are needed for GC patients. The discovery of non-coding RNAs (ncRNAs), primarily microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), helped to elucidate the mechanisms of tumorigenesis, diagnosis and treatment of GC. Recently, significant research has been conducted on non-coding RNAs and how the regulatory dysfunction of these RNAs impacts the tumorigenesis of GC. In this study, we review papers published in the last five years concerning the dysregulation of non-coding RNAs, especially miRNAs and lncRNAs, in GC. We summarize instances of aberrant expression of the ncRNAs in GC and their effect on survival-related events, including cell cycle regulation, AKT signaling, apoptosis and drug resistance. Additionally, we evaluate how ncRNA dysregulation affects the metastatic process, including the epithelial-mesenchymal transition, stem cells, transcription factor activity, and oncogene and tumor suppressor expression. Lastly, we determine how ncRNAs affect angiogenesis in the microenvironment of GC. We further discuss the use of ncRNAs as potential biomarkers for use in clinical screening, early diagnosis and prognosis of GC. At present, no ideal ncRNAs have been identified as targets for the treatment of GC.
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23
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Luo Q, Li W, Zhao T, Tian X, Liu Y, Zhang X. Role of miR-148a in cutaneous squamous cell carcinoma by repression of MAPK pathway. Arch Biochem Biophys 2015; 583:47-54. [DOI: 10.1016/j.abb.2015.07.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/31/2015] [Accepted: 07/31/2015] [Indexed: 12/20/2022]
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24
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Chang W, Kim R, Park SI, Jung YJ, Ham O, Lee J, Kim JH, Oh S, Lee MY, Kim J, Park MS, Chung YA, Hwang KC, Maeng LS. Enhanced Healing of Rat Calvarial Bone Defects with Hypoxic Conditioned Medium from Mesenchymal Stem Cells through Increased Endogenous Stem Cell Migration via Regulation of ICAM-1 Targeted-microRNA-221. Mol Cells 2015; 38:643-50. [PMID: 26062554 PMCID: PMC4507031 DOI: 10.14348/molcells.2015.0050] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/22/2015] [Accepted: 04/24/2015] [Indexed: 01/08/2023] Open
Abstract
The use of conditioned medium from mesenchymal stem cells may be a feasible approach for regeneration of bone defects through secretion of various components of mesenchymal stem cells such as cytokines, chemokines, and growth factors. Mesenchymal stem cells secrete and accumulate multiple factors in conditioned medium under specific physiological conditions. In this study, we investigated whether the conditioned medium collected under hypoxic condition could effectively influence bone regeneration through enhanced migration and adhesion of endogenous mesenchymal stem cells. Cell migration and adhesion abilities were increased through overexpression of intercellular adhesion molecule-1 in hypoxic conditioned medium treated group. Intercellular adhesion molecule-1 was upregulated by microRNA-221 in mesenchymal stem cells because microRNAs are key regulators of various biological functions via gene expression. To investigate the effects in vivo, evaluation of bone regeneration by computed tomography and histological assays revealed that osteogenesis was enhanced in the hypoxic conditioned medium group relative to the other groups. These results suggest that behavioral changes of endogenous mesenchymal stem cells through microRNA-221 targeted-intercellular adhesion molecule-1 expression under hypoxic conditions may be a potential treatment for patients with bone defects.
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Affiliation(s)
- Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Sang In Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
| | - Yu Jin Jung
- EIT/LOFUS Research Center, International St. Mary’s Hospital, Catholic Kwandong University, Incheon 404-834,
Korea
| | - Onju Ham
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Jihyun Lee
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Ji Hyeong Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Sekyung Oh
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305,
USA
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu 702-701,
Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women’s University, Seoul 140-742,
Korea
| | - Moon-Seo Park
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
| | - Ki-Chul Hwang
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangwon 210-701,
Korea
- Catholic Kwandong University International, St. Mary’s Hospital, Incheon 404-834,
Korea
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
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25
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Kara M, Yumrutas O, Ozcan O, Celik OI, Bozgeyik E, Bozgeyik I, Tasdemir S. Differential expressions of cancer-associated genes and their regulatory miRNAs in colorectal carcinoma. Gene 2015; 567:81-6. [PMID: 25925209 DOI: 10.1016/j.gene.2015.04.065] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 04/24/2015] [Indexed: 12/18/2022]
Abstract
Colorectal cancer is one of the frequently seen malignancies in the world. To date, several oncogenes and tumor suppressor genes have been identified and linked to colorectal cancer pathogenesis. Although recent advances in the diagnosis and therapy of colorectal cancer are promising, identifying novel genetic contributors is still high priority. In the present study, expression profile of some cancer-related genes and their regulatory miRNA molecules were evaluated by using a high-throughput real-time PCR method. For the study, a total of 54 patients diagnosed with CRC and normal colon tissue samples of 42 healthy controls were included. For the expression analysis, total RNA was extracted from FFPE tissue samples and converted to cDNA. All expression analyses were assessed by using Fluidigm Microfluidic Dynamic Array chips for 96 samples and the reactions were held in Fluidigm BioMark™ HD System Real-Time PCR. As a result of the study, expression of the ADAMTS1, FHIT, RUNX1, RUNX3 and WWOX genes was shown to be significantly altered in CRC tissues in contrast to normal tissue samples. Moreover, miR-378a-3p, miR-155-5p, miR-193b-3p, miR-96-5p, miR-17-5p, miR-27a-3p, miR-133b, miR-203a, miR-205-5p, miR-34c-5p, miR-130a-3p, miR-301a-3p, miR-132-3p, miR-222-3p, miR-34a-5p, miR-21-5p, miR-29a-3p and miR-29b-3p were found to be significantly deregulated in CRC. Consequently, results of the current study strongly suggest the involvement of novel cancer-related genes and their regulatory miRNAs in CRC physiopathology.
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Affiliation(s)
- Murat Kara
- Department of Medical Genetics, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla, Turkey
| | - Onder Yumrutas
- Department of Medical Biology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Onder Ozcan
- Department of General Surgery, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla, Turkey
| | - Ozgur Ilhan Celik
- Department of Medical Pathology, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla, Turkey
| | - Esra Bozgeyik
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Gaziantep, Gaziantep, Turkey
| | - Ibrahim Bozgeyik
- Department of Medical Biology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey.
| | - Sener Tasdemir
- Department of Medical Genetics, Faculty of Medicine, Ataturk University, Erzurum, Turkey
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26
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Xie L, Zhang Z, Tan Z, He R, Zeng X, Xie Y, Li S, Tang G, Tang H, He X. MicroRNA-124 inhibits proliferation and induces apoptosis by directly repressing EZH2 in gastric cancer. Mol Cell Biochem 2015; 392:153-9. [PMID: 24658854 DOI: 10.1007/s11010-014-2028-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 03/06/2014] [Indexed: 12/13/2022]
Abstract
MicroRNA-124 (miR-124), a pivotal member of the p53 network, was found to be down-regulated in multiple types of tumors and further reported as tumor suppressor microRNA. In this study, we found that miR-124 was down-regulated in gastric cancer cell lines and specimens. Restoration of miR-124 expression inhibited the proliferation and colony formation of gastric cancer cells. EZH2 (enhancer of zeste homolog 2), which has been shown to be an important transcription factor involved in the proliferation and metastasis of tumor cells, was here confirmed to be a direct target gene of miR-124. On the other hand, silencing EZH2 also inhibits cell proliferation of gastric cancer cells. Furthermore, the treatment combining miR-124 with 5-fluorouracil (5-FU) significantly showed more efficient anti-tumor effects than single treatment of miR-124 or 5-FU, and over-expression of miR-124 suppresses the tumor growth in vivo. Our study indicate that miR-124 can suppress gastric cancer cell growth by directly targeting the EZH2 gene and sensitize the treatment effect of 5-FU. Therefore, miR-124 shows tumor-suppressive activity and may be a new and useful approach of gastric cancer therapy.
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27
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Wan X, Ding X, Chen S, Song H, Jiang H, Fang Y, Li P, Guo J. The functional sites of miRNAs and lncRNAs in gastric carcinogenesis. Tumour Biol 2015; 36:521-32. [PMID: 25636450 PMCID: PMC4342515 DOI: 10.1007/s13277-015-3136-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/19/2015] [Indexed: 12/12/2022] Open
Abstract
Gastric cancer is one of the most common malignant diseases and has one of the highest mortality rates worldwide. Its molecular mechanisms are poorly understood. Recently, the functions of non-coding RNAs (ncRNAs) in gastric cancer have attracted wide attention. Although the expression levels of various ncRNAs are different, they may work together in a network and contribute to gastric carcinogenesis by altering the expression of oncogenes or tumor suppressor genes. They affect the cell cycle, apoptosis, motility, invasion, and metastasis. Dysregulated microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), including miR-21, miR-106, H19, and ANRIL, directly or indirectly regulate carcinogenic factors or signaling pathways such as PTEN, CDK, caspase, E-cadherin, Akt, and P53. Greater recognition of the roles of miRNAs and lncRNAs in gastric carcinogenesis can provide new insight into the mechanisms of tumor development and identify targets for anticancer drug development.
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Affiliation(s)
- Xiangxiang Wan
- Department of Gastroenterology, Ningbo First Hospital, No. 59 Liuting Street, Ningbo, 315010, China
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28
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Abstract
Epigenetic changes frequently occur in human gastric cancer. Gene promoter region hypermethylation, genomic global hypomethylation, histone modifications, and alterations of noncoding RNAs are major epigenetic changes in gastric cancer. As a key risk factor of gastric cancer, H. pylori infection is an independent predictive indicator of gene methylation. A growing number of epigenetic studies in gastric cancer have provided lots of potential diagnostic and prognostic markers and therapeutic targets.
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Affiliation(s)
- Mingzhou Guo
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, #28 Fuxing Road, Beijing, 100853, China,
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29
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Ao J, Xiao WD. Progresses in research of miR-148a in digestive system cancers. Shijie Huaren Xiaohua Zazhi 2014; 22:4938-4942. [DOI: 10.11569/wcjd.v22.i32.4938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) are a class of small non-protein-coding RNAs, which are often aberrantly expressed in the progression of various malignant tumors. Digestive system cancers are major causes of death all over the world. The finding of miRNAs provides a new direction for the diagnosis and therapy of digestive system cancers. Recent studies have demonstrated that miR-148a is aberrantly down-regulated in various digestive system cancers, including gastric cancer, hepatocellular cancer, pancreatic cancer and colorectal cancer. MiR-148a play a crucial role in the progression of these tumors as a tumor suppressor gene. This article will review the progress in research of miR-148a in digestive system cancers.
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30
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Xia J, Guo X, Yan J, Deng K. The role of miR-148a in gastric cancer. J Cancer Res Clin Oncol 2014; 140:1451-6. [PMID: 24659367 DOI: 10.1007/s00432-014-1649-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 03/12/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE Gastric cancer is one of the most common malignant diseases worldwide, although much progress has been achieved in recent years, the early diagnosis and treatment for gastric cancer are not yet satisfactory and, thus the prognosis is still poor. MicroRNAs (miRNAs) can regulate a variety of physiological and developmental processes, it has been revealed that many miRNAs contribute the initiation and progression of various cancers. MiR-148a is one of the most important miRNAs in gastric cancer, and the aim of this paper is to provide an overview of various roles of miR-148a in gastric cancer. METHODS AND RESULTS We searched studies in electronic databases. MiR-148a was down-regulated in gastric cancer tissues and cell lines, which was resulted from the hypermethylation in its promoter region. Furthermore, miR-148a could regulate several different target genes and pathways involving tumor proliferation, invasion and metastasis. CONCLUSION MiR-148a may serve as a novel biomarker for the diagnosis and as a new therapeutic target in gastric cancer.
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Ou-Yang X, Xia KJ, Chen ZW, Zhu PQ. Advances in research of miR-148a in gastric cancer. Shijie Huaren Xiaohua Zazhi 2014; 22:2839-2844. [DOI: 10.11569/wcjd.v22.i20.2839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is one of the most frequent malignancies of the digestive system, and its incidence is on the rise in recent years. Surgical resection is the preferred treatment for gastric cancer. However, the rate of diagnosis of early gastric cancer is not high, and the quality of survival and 5-year survival rate of gastric cancer patients are low. MicroRNAs are a class of small non-coding RNAs that have been demonstrated to participate in tumor occurrence and development. The role of miR-148a in gastric cancer has received increasing attention in recent years, which offers a new possibility for the diagnosis and treatment of gastric cancer. This review summarizes the advances in understanding the role of miR-148a in gastric cancer.
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32
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Decreased miR-30b-5p expression by DNMT1 methylation regulation involved in gastric cancer metastasis. Mol Biol Rep 2014; 41:5693-700. [PMID: 24913034 DOI: 10.1007/s11033-014-3439-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 05/27/2014] [Indexed: 12/27/2022]
Abstract
miRNAs have emerged as crucial regulators in the regulation of development as well as human diseases, especially tumorigenesis. The aims of this study are to evaluate miR-30b-5p expression pattern and mechanism in gastric carcinogenesis due to which remains to be determined. Expression of miR-30b-5p was analyzed in 51 gastric cancer cases and 4 cell lines by qRT-PCR. The effect of DNA methylation on miR-30b-5p expression was assessed by MSP and BGS. In order to know whether DNMT1 increased miR-30b-5p promoter methylation, DNMT1 was depleted in cell lines AGS and BGC-823. The role of miR-30b-5p on cell migration was evaluated by wound healing assays. Decreased expression of miR-30b-5p was found in gastric cancer samples. In tumor, the expression level of miR-30b-5p was profound correlated with lymph node metastasis (P = 0.019). The level of miR-30b-5p may be restored by DNA demethylation and DNMT1 induced miR-30b-5p promoter methylation. In vitro functional assays implied that enforced miR-30b-5p expression affected cell migration, consistent with tissues analysis. Our findings uncovered that miR-30b-5p is significantly diminished in gastric cancer tissues, providing the first insight into the epigenetic mechanism of miR-30b-5p down-regulation, induced by DNMT1, and the role of miR-30b-5p in gastric cancer carcinogenesis. Overexpression of miR-30b-5p inhibited cell migration. Thus, miR-30b-5p may represent a potential therapeutic target for gastric cancer therapy.
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33
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Yan J, Guo X, Xia J, Shan T, Gu C, Liang Z, Zhao W, Jin S. MiR-148a regulates MEG3 in gastric cancer by targeting DNA methyltransferase 1. Med Oncol 2014; 31:879. [PMID: 24515776 DOI: 10.1007/s12032-014-0879-6] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 01/30/2014] [Indexed: 12/12/2022]
Abstract
The long non-coding RNA MEG3 has been reported to be a tumor suppressor in a number of malignant tumors including gastric cancer. Several studies have shown that the regulation of MEG3 may attribute to the promoter hypermethylation. However, the mechanism of MEG3 regulation in gastric cancer is still not well understood. MiR-148a can suppress gastric tumorigenesis through regulating the expression of target genes such as DNA methyltransferase 1(DNMT-1). We examined the expression of MEG3 in 52 gastric cancer samples using quantitative real-time PCR and found the down-regulation of MEG3 in both gastric cancer tissues and cell lines. The positive correlation of MEG3 and miR-148a was further confirmed in SGC-7901 and BGC-823 gastric cancer cell lines. Hypermethylation of MEG3 differentially methylated regions was identified by methylation-specific PCR, and MEG3 expression was increased with the inhibition of methylation with siRNA to DNMT-1 in gastric cancer cells. In addition, transfection of MEG3 siRNA into gastric cancer cells diminished the suppression of proliferation induced by overexpression of miR-148a. Our results suggest that the suppression of miR-148a may contribute to the down-regulation of MEG3 in gastric cancer by modulation of DNMT-1.
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Affiliation(s)
- Jiang Yan
- Department of General Surgery, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, 214002, China
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34
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Abstract
Mounting evidence has recently underscored the importance of DNA methylation in normal brain functions. DNA methylation machineries are responsible for dynamic regulation of methylation patterns in discrete brain regions. In addition to methylation of cytosines in genomic DNA (5-methylcytosine; 5mC), other forms of modified cytosines, such as 5-hydroxymethylcytosine, 5-formylcytosine, and 5-carboxylcytosine, can potentially act as epigenetic marks that regulate gene expression. Importantly, epigenetic modifications require cognate binding proteins to read and translate information into gene expression regulation. Abnormal or incorrect interpretation of DNA methylation patterns can cause devastating consequences, including mental illnesses and neurological disorders. Although DNA methylation was generally considered to be a stable epigenetic mark in post-mitotic cells, recent studies have revealed dynamic DNA modifications in neurons. Such reversibility of 5mC sheds light on potential mechanisms underlying some neurological disorders and suggests a new route to correct aberrant methylation patterns associated with these disorders.
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Affiliation(s)
- Yi-Lan Weng
- />Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Ran An
- />Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Jaehoon Shin
- />Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Graduate Program in Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Hongjun Song
- />Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD USA
- />Graduate Program in Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
- />The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Guo-li Ming
- />Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD USA
- />Graduate Program in Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
- />The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD USA
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35
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Chen Z, Ma T, Huang C, Zhang L, Xu T, Hu T, Li J. MicroRNA-148a: a potential therapeutic target for cancer. Gene 2013; 533:456-7. [PMID: 24084367 DOI: 10.1016/j.gene.2013.09.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/05/2013] [Accepted: 09/18/2013] [Indexed: 12/12/2022]
Abstract
MicroRNA-148a (miR-148a) which suppresses tumor growth by directly decreasing DNMT1 expression has been demonstrated as an important role for cancer therapy. The mechanisms for miR-148a in cancer will become potential future researches.
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Affiliation(s)
- Zhaolin Chen
- Institute for Liver Diseases of Anhui Medical University (AMU), School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China
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36
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Smythies J, Edelstein L. Interactions between the spike code and the epigenetic code during information processing in the brain. Front Mol Neurosci 2013; 6:17. [PMID: 23847467 PMCID: PMC3703540 DOI: 10.3389/fnmol.2013.00017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Accepted: 06/18/2013] [Indexed: 12/03/2022] Open
Affiliation(s)
- John Smythies
- Department of Psychology, Center for Brain and Cognition, University of California San Diego La Jolla, CA, USA
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