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Du Y, Kong C, Zhu Y, Yu M, Li Z, Bi J, Li Z, Liu X, Zhang Z, Yu X. Knockdown of SNHG15 suppresses renal cell carcinoma proliferation and EMT by regulating the NF-κB signaling pathway. Int J Oncol 2018; 53:384-394. [PMID: 29750422 DOI: 10.3892/ijo.2018.4395] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 04/12/2018] [Indexed: 11/05/2022] Open
Abstract
Aberrant expression of long noncoding RNAs (lncRNAs) is associated with cancer tumorigenesis and progression. It has been suggested that lncRNAs may be potential clinical diagnostic and prognostic biomarkers, and therapeutic targets. In the present study, the expression levels of small nucleolar RNA host gene 15 (SNHG15) were significantly upregulated in renal cell carcinoma (RCC) tissues and cell lines compared with in adjacent tissues and a proximal tubule epithelial cell line, as determined by reverse transcription‑quantitative polymerase chain reaction. Subsequently, knockdown of SNHG15 expression with small interfering RNA inhibited RCC proliferation, invasion and migration, was determined by western blotting and Transwell assays. Furthermore, the present study suggested that SNHG15 may be involved in the nuclear factor‑κB signaling pathway, induce the epithelial‑mesenchymal transition process, and promote RCC invasion and migration.
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Affiliation(s)
- Yang Du
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Chuize Kong
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuyan Zhu
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Meng Yu
- Department of Reproductive Biology and Transgenic Animal China Medical University, Shenyang, Liaoning 110003, P.R. China
| | - Zeliang Li
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Jianbin Bi
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhenhua Li
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xiankui Liu
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhe Zhang
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xiuyue Yu
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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52
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Long non-coding RNAs: crucial regulators of gastrointestinal cancer cell proliferation. Cell Death Discov 2018; 4:50. [PMID: 29736267 PMCID: PMC5919979 DOI: 10.1038/s41420-018-0051-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 03/14/2018] [Accepted: 03/19/2018] [Indexed: 12/13/2022] Open
Abstract
Studies of long non-coding RNAs (lncRNAs) have been prevalent in the field of non-coding RNA regulation in recent years. LncRNAs exert crucial effects on malignant cell processes in the gastrointestinal system, including proliferation. Aberrant lncRNA expression, through both oncogenes and tumor suppressor genes, is instrumental to tumor cell proliferation. Here, we summarize the different molecular mechanisms and relevant signaling pathways through which multifarious lncRNAs regulate cell proliferation and we show that lncRNAs are potential biomarkers for gastrointestinal cancers.
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53
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Jiang H, Li T, Qu Y, Wang X, Li B, Song J, Sun X, Tang Y, Wan J, Yu Y, Zhan J, Zhang H. Long non-coding RNA SNHG15 interacts with and stabilizes transcription factor Slug and promotes colon cancer progression. Cancer Lett 2018; 425:78-87. [PMID: 29604394 DOI: 10.1016/j.canlet.2018.03.038] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 03/12/2018] [Accepted: 03/23/2018] [Indexed: 01/21/2023]
Abstract
Slug is a fast-turnover transcription factor critical for controlling cell fate and cancer cell invasion and metastasis. The stability of Slug is important and maintained by diverse mechanisms. In this study, we presented a paradigm of this activity by identifying long noncoding RNA (lncRNA) small nucleolar RNA host gene 15 (SNHG15) that binds to and stabilizes Slug in colon cancer cells. LncRNA SNHG15 transcription is upregulated in a variety of human cancers according to The Cancer Genome Atlas. Here, ectopic expression of SNHG15 promoted colon cancer cell migration in vitro, accelerated xenografted tumor growth in vivo, and elevated levels of SNHG15 were associated with poor prognosis for colon cancer patients. Mechanistically, SNHG15 maintains Slug stability in living cells by impeding its ubiquitination and degradation through interaction with the zinc finger domain of Slug. These findings revealed a novel mechanism underlying the control of Slug stability by demonstrating that oncogenic lncRNA SNHG15 interacts with and blocks Slug degradation via the ubiquitin-proteasome system.
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Affiliation(s)
- Hao Jiang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Tingting Li
- Department Bioinformatics, Peking University Health Science Center, Beijing, 100191, China
| | - Yi Qu
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Xiang Wang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Bing Li
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Jiagui Song
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Xiaoran Sun
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Yan Tang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Junhu Wan
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Yu Yu
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Jun Zhan
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Hongquan Zhang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China.
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54
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Wang H, Wu J, Zhang X, Ding L, Zeng Q. Microarray analysis of the expression profile of lncRNAs reveals the key role of lncRNA BC088327 as an agonist to heregulin‑1β‑induced cell proliferation in peripheral nerve injury. Int J Mol Med 2018; 41:3477-3484. [PMID: 29568963 DOI: 10.3892/ijmm.2018.3571] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 11/24/2017] [Indexed: 11/05/2022] Open
Abstract
Heregulin‑1β is capable of promoting the nerve regeneration of acellular nerve allografts with skin‑derived precursor differentiated Schwann cell (SC) therapy in peripheral nerve injury. Long non‑coding RNAs (lncRNAs) serve important roles in the regulation of gene transcription and trans-lation in multiple biological processes, but its association with the repair of peripheral nerve injury is unexplored. Therefore, in the present study, the aim was to identify novel indicators for peripheral nerve injury, and to detect whether there is an association between lncRNA expression and the treatment effect of heregulin‑1β on this disorder. The expression status of lncRNAs and mRNAs in a well‑built rat model with sciatic nerve injury was investigated using microarray assays. Based on the results of the microarray assays and quantitative polymerase chain reaction validation, it was inferred that lncRNA BC088327 was upregulated to the largest extent among all the lncRNAs. According to these findings, the role of BC088327 in peripheral nerve injury was further assessed by detecting the cell viability, cell cycle and apoptosis in a hypoxic SC cell model after suppressing the expression of BC088327 using specific small interfering RNA. Based on the results of the lncRNA microarray assay, 805 lncRNAs were significantly differentially expressed, among which, 323 lncRNAs were upregulated and 482 lncRNAs were downregulated. Based on the results of the mRNA microarray assay, 1,293 lncRNAs were significantly differentially expressed, including 603 upregulated and 690 downregulated lncRNAs. Moreover, knockdown of lncRNA BC088327 suppressed cell viability and induced cell apoptosis and S-phase cell cycle arrest in the SCs. In conclusion, expression profile changes of lncRNAs in peripheral nerve injuries were closely associated with treatment with heregulin‑1β. lncRNA BC088327 may play a synergistic role with heregulin‑1β in repairing peripheral injury, which has the potential be a biomarker for the detection of peripheral injury and a medical target for the development of therapeutic modalities.
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Affiliation(s)
- Houlei Wang
- Department of Orthopedics, Jinshan Hospital of Fudan University, Shanghai 201508, P.R. China
| | - Jingping Wu
- Department of Orthopedics, Jinshan Hospital of Fudan University, Shanghai 201508, P.R. China
| | - Xinchao Zhang
- Department of Orthopedics, Jinshan Hospital of Fudan University, Shanghai 201508, P.R. China
| | - Lei Ding
- Department of Orthopedics, Jinshan Hospital of Fudan University, Shanghai 201508, P.R. China
| | - Qingmin Zeng
- Department of Orthopedics, Jinshan Hospital of Fudan University, Shanghai 201508, P.R. China
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Liu X, Zheng J, Xue Y, Qu C, Chen J, Wang Z, Li Z, Zhang L, Liu Y. Inhibition of TDP43-Mediated SNHG12-miR-195-SOX5 Feedback Loop Impeded Malignant Biological Behaviors of Glioma Cells. MOLECULAR THERAPY-NUCLEIC ACIDS 2017; 10:142-158. [PMID: 29499929 PMCID: PMC5751968 DOI: 10.1016/j.omtn.2017.12.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 12/02/2017] [Accepted: 12/02/2017] [Indexed: 01/05/2023]
Abstract
Long non-coding RNA (lncRNA) dysregulation is involved in tumorigenesis and regulation of diverse cellular processes in gliomas. lncRNA SNHG12 is upregulated and promotes cell growth in human osteosarcoma cells. TAR-DNA binding protein 43 (TDP43) functions as an oncogene in various tumors by modulating RNA expression. Downregulation of TDP43 or SNHG12 significantly inhibited malignant biological behaviors of glioma cells. miR-195, downregulated in glioma tissues and cells, significantly impaired the malignant progression of glioma cells. TDP43 upregulated miR-195 in an SNHG12-dependent manner. We further revealed that SNHG12 and miR-195 were in an RNA-induced silencing complex (RISC). Inhibition of SNHG12 combined with restoration of miR-195 robustly reduced tumor growth in vivo. SOX5 was overexpressed in glioma tissues and cells. miR-195 targeted SOX5 3′ UTR in a sequence-specific manner. Gelsolin was activated by SOX5. More importantly, SOX5 activated SNHG12 promoter and upregulated its expression, forming a feedback loop. Dysregulation of SNHG12, miR-195, and SOX5 predicted poor prognosis of glioma patients. The present study demonstrated that SNHG12-miR-195-SOX5 feedback loop exerted a crucial role in the regulation of glioma cells’ malignant progression.
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Affiliation(s)
- Xiaobai Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Jian Zheng
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Yixue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China; Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang 110122, China; Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang 110122, China
| | - Chengbin Qu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Jiajia Chen
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China; Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang 110122, China; Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang 110122, China
| | - Zhenhua Wang
- Department of Physiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning 110122, China
| | - Zhen Li
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Lei Zhang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Yunhui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China; Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang 110004, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China.
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56
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Kong Q, Qiu M. Long noncoding RNA SNHG15 promotes human breast cancer proliferation, migration and invasion by sponging miR-211-3p. Biochem Biophys Res Commun 2017; 495:1594-1600. [PMID: 29217194 DOI: 10.1016/j.bbrc.2017.12.013] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 12/03/2017] [Indexed: 01/10/2023]
Abstract
Long non-coding RNAs (lncRNA) have been demonstrated to act as essential regulators in the development and progression of breast cancer. In our study, we found that long noncoding RNA SNHG15 was highly expressed in breast cancer tissues and cell lines. And the expression of SNHG15 was correlated with TNM stage, lymphnode metastasis and survival in breast cancer patients. SNHG15 knockdown significantly inhibited the proliferation and induced apoptosis in breast cancer cells in vitro and in vivo. Besides, SNHG15 downregulation suppressed cell migration and invasion in MCF-7 and BT-20 cells, and inhibited epithelial-mesenchymal transition (EMT). In mechanism, we found that SNHG15 acted as a competing endogenous RNA to sponge miR-211-3p, which was downregulated in breast cancers and inhibited cell proliferation and migration. Our results showed that there was a negative correlation between SNHG15 and miR-211-3p expression in breast cancer patients. Collectively, we, for the first time, revealed the functions of SNHG15 and miR-211-3p in breast cancer.
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Affiliation(s)
- Qingli Kong
- Department of Oncology, Affiliated Hospital of Jining Medical College, Jining, 272029, Shangdong province, China
| | - Min Qiu
- Department of Breast and Thyroid Surgery, Affiliated Hospital of Jining Medical College, Jining, 272029, Shangdong province, China.
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57
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Ma Y, Xue Y, Liu X, Qu C, Cai H, Wang P, Li Z, Li Z, Liu Y. SNHG15 affects the growth of glioma microvascular endothelial cells by negatively regulating miR-153. Oncol Rep 2017; 38:3265-3277. [DOI: 10.3892/or.2017.5985] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/11/2017] [Indexed: 11/06/2022] Open
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58
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Ma Z, Huang H, Wang J, Zhou Y, Pu F, Zhao Q, Peng P, Hui B, Ji H, Wang K. Long non-coding RNA SNHG15 inhibits P15 and KLF2 expression to promote pancreatic cancer proliferation through EZH2-mediated H3K27me3. Oncotarget 2017; 8:84153-84167. [PMID: 29137412 PMCID: PMC5663584 DOI: 10.18632/oncotarget.20359] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/29/2017] [Indexed: 01/17/2023] Open
Abstract
Long non-coding RNA (lncRNA) is emerging as an critical regulator in multiple cancers, including pancreatic cancer (PC). Recently, lncRNA SNHG15 was found to be up-regulated in gastric cancer and hepatocellular carcinoma, exerting oncogenic effects. Nevertheless, the biological function and regulatory mechanism of SNHG15 remain unclear in pancreatic cancer (PC). In this study, we reported that SNHG15 expression was also upregulated in PC tissues, and its overexpression was remarkably associated with tumor size, tumor node metastasis (TNM) stage and lymph node metastasis in patients with PC. SNHG15 knockdown inhibited proliferative capacities and suppressed apoptotic rate of PC cells in vitro, and impaired in-vivo tumorigenicity. Additionally, RNA immunoprecipitation (RIP) assays showed that SNHG15 epigenetically repressed the P15 and Kruppel-like factor 2 (KLF2) expression via binding to enhancer of zeste homolog 2 (EZH2), and chromatin immunoprecipitation assays (CHIP) assays demonstrated that EZH2 was capable of binding to promoter regions of P15 and KLF2 to induce histone H3 lysine 27 trimethylation (H3K27me3). Furthermore, rescue experiments indicated that SNHG15 oncogenic function partially involved P15 and KLF2 repression. Consistently, an inverse correlation between the expression of SNHG15 and traget genes were found in PC tissues. Our results reported that SNHG15 could act as an oncogene in PC, revealing its potential value as a biomarker for early detection and individualized therapy.
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Affiliation(s)
- Zhonghua Ma
- The Second Clinical Medical College of Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China.,Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Hesuyuan Huang
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu, People's Republic of China.,Department of General Surgery, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Jirong Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Yan Zhou
- Department of Oncology, The Affiliated Yixing Hospital of Jiangsu University, Wuxi 214200, Jiangsu, People's Republic of China
| | - Fuxing Pu
- Department of Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Qinghong Zhao
- Department of General Surgery, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Peng Peng
- Department of Oncology, Second Hospital of Nanjing, Nanjing 210000, Jiangsu, People's Republic of China
| | - Bingqing Hui
- The Second Clinical Medical College of Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China.,Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Hao Ji
- The Second Clinical Medical College of Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China.,Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
| | - Keming Wang
- The Second Clinical Medical College of Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China.,Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing 210000, Jiangsu, People's Republic of China
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Expression of long non-coding RNA MFI2-AS1 is a strong predictor of recurrence in sporadic localized clear-cell renal cell carcinoma. Sci Rep 2017; 7:8540. [PMID: 28819235 PMCID: PMC5561098 DOI: 10.1038/s41598-017-08363-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 07/06/2017] [Indexed: 01/09/2023] Open
Abstract
Prediction of recurrence is a challenge for the development of adjuvant treatments in clear-cell renal cell carcinoma (ccRCC). In these tumors, expression of long non-coding RNAs (lncRNAs) are deregulated and closely associated with prognosis. Thus, we aimed to predict ccRCC recurrence risk using lncRNA expression. We identified prognostic lncRNAs in a training set of 351 localized ccRCCs from The Cancer Genome Atlas and validated lncRNA-based recurrence classification in an independent cohort of 167 localized ccRCCs. We identified lncRNA MFI2-AS1 as best candidate in the training set. In the validation cohort, MFI2-AS1 expression was independently associated with shorter disease-free survival (Hazard Ratio (HR) for relapse 3.5, p = 0.0001). Combined with Leibovich classification, MFI2-AS1 status improved prediction of recurrence (C-index 0.70) compared to MFI2-AS1 alone (0.67) and Leibovich classification alone (0.66). In patients with aggressive tumors (Leibovich ≥5), MFI2-AS1 expression was associated with dramatically increased risk of relapse (HR 12.16, p < 0.0001) compared to patients with undetectable MFI2-AS1 who had favorable outcomes. Compared to normal samples, MFI2-AS1 was upregulated in tumor tissue, and higher expression was associated with metastatic dissemination. Overall, MFI2-AS1 status improves patient stratification in localized ccRCC, which supports further integration of lncRNAs in molecular cancer classifications.
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60
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Sun X, Wang Z, Yuan W. Down-regulated long non-coding RNA SNHG1 inhibits tumor genesis of colorectal carcinoma. Cancer Biomark 2017; 20:67-73. [PMID: 28759957 DOI: 10.3233/cbm-170112] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiantao Sun
- Department of Colorectal Surgery, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Zhimin Wang
- Department of Endocrinology, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Weitang Yuan
- Department of Colorectal Surgery, The First Affiliated Hospital and Institute of Clinical Medicine, Zhengzhou University, Zhengzhou 450052, Henan, China
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61
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Liu K, Hou Y, Liu Y, Zheng J. LncRNA SNHG15 contributes to proliferation, invasion and autophagy in osteosarcoma cells by sponging miR-141. J Biomed Sci 2017; 24:46. [PMID: 28720111 PMCID: PMC5516387 DOI: 10.1186/s12929-017-0353-9] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 07/12/2017] [Indexed: 12/17/2022] Open
Abstract
Background LncRNA small nucleolar RNA host gene 15 (SNHG15) was reported to play an oncogenic role in tumors. However, the role of SNHG15 and its molecular mechanism in osteosarcoma (OS) cells are largely unknown. Methods qRT-PCR was performed to evaluate the expression levels of SNHG15 and miR-141 in OS tissues and cells. Cell transfection with different siRNAs, miRNAs or pcDNAs into U2OS and MG63 cells were carried out by Lipofectamine 2000. The effects of SNHG15 and miR-141 on OS cell proliferation, invasion and the levels of autophagy-related proteins were analyzed by MTT assay, Transwell invasion/migration assay and western blot, respectively. Luciferase reporter assay was used to confirm whether SNHG15 could directly interact with miR-141. Results We found that up-regulation of SNHG15 was inversely correlated with miR-141 expression in OS tissues. SNHG15 knockdown and miR-141 overexpression significantly suppressed cell proliferation, invasion, migration and autophagy while SNHG15 overexpression and miR-141 repression exhibited the opposite effects on OS cells. Besides, SNHG15 could directly interact with miR-141 and regulate its expression. Furthermore, miR-141 suppressing significantly overturned the inhibition on proliferation, invasion, migration and autophagy mediated by SNHG15 knockdown while miR-141 overexpression remarkably attenuated SNHG15 overexpression-induced proliferation, invasion, migration and autophagy in OS cells. Conclusion Our data showed that SNHG15 contributes to proliferation, invasion, migration and autophagy in OS by negatively regulating miR-141, providing a new potential target and prognostic biomarker for the treatment of OS.
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Affiliation(s)
- Ke Liu
- Department of Orthopaedics, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, China
| | - Yi Hou
- Department of Orthopaedics, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, China
| | - Yunke Liu
- Department of Orthopaedics, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, China
| | - Jia Zheng
- Department of Orthopaedics, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, China.
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62
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Zhu M, Wang Y, Liu X, Wen X, Liang C, Tu J. LncRNAs act as prognostic biomarkers in gastric cancer: A systematic review and meta-analysis. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.flm.2017.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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63
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Xu J, Zhang X, Wang H, Ge S, Gao T, Song L, Wang X, Li H, Qin Y, Zhang Z. HCRP1 downregulation promotes hepatocellular carcinoma cell migration and invasion through the induction of EGFR activation and epithelial-mesenchymal transition. Biomed Pharmacother 2017; 88:421-429. [DOI: 10.1016/j.biopha.2017.01.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 01/02/2017] [Indexed: 02/08/2023] Open
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64
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Ma Y, Huang D, Yang F, Tian M, Wang Y, Shen D, Wang Q, Chen Q, Zhang L. Long Noncoding RNA Highly Upregulated in Liver Cancer Regulates the Tumor Necrosis Factor-α-Induced Apoptosis in Human Vascular Endothelial Cells. DNA Cell Biol 2016; 35:296-300. [PMID: 26981838 DOI: 10.1089/dna.2015.3203] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Atherosclerosis is the major cause of myocardial infarction and stroke, which is a leading cause of morbidity and mortality in developed countries. During the pathological process of atherosclerosis, inflammation participates in all stages of atherosclerosis. Tumor necrosis factor-α (TNF-α), one of the most important inflammatory factor, induces apoptosis of endothelial cells, which play a central role in endothelial dysfunction. However, the underlying mechanism involved in long noncoding RNA (lncRNA) remains unclear. In the present study, we demonstrated the role of lncRNA highly upregulated in liver cancer (HULC) in TNF-α-induced apoptosis. HULC expression was decreased with TNF-α treatment. Restoring HULC expression rescued the apoptosis induced by TNF-α. HULC regulated TNF-α-induced apoptosis through regulation of miR-9 expression. Furthermore, RNA immunoprecipitation and RNA pull-down assays showed that HULC modulated miR-9 expression through association with DNA methyltransferases and suppression of miR-9 expression. HULC-miR-9 pathway may be a potential target for treating atherosclerosis.
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Affiliation(s)
- Yongjiang Ma
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Dangsheng Huang
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Feifei Yang
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Miao Tian
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Yumei Wang
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Dong Shen
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Qiushuang Wang
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Qiang Chen
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
| | - Liwei Zhang
- Department of Cardiology, First Affiliated Hospital of General Hospital of Chinese People's Liberation Army , Beijing, China
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Wu R, Su Y, Wu H, Dai Y, Zhao M, Lu Q. Characters, functions and clinical perspectives of long non-coding RNAs. Mol Genet Genomics 2016; 291:1013-33. [PMID: 26885843 DOI: 10.1007/s00438-016-1179-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 01/26/2016] [Indexed: 02/07/2023]
Abstract
It is well established that most of the human genome and those of other mammals and plants are transcribed into RNA without protein-coding capacity, which we define as non-coding RNA. From siRNA to microRNA, whose functions and features have been well characterized, non-coding RNAs have been a popular topic in life science research over the last decade. Long non-coding RNAs (lncRNAs), however, as a novel class of transcripts, are distinguished from these other small RNAs. Recent studies have revealed a diverse population of lncRNAs with different sizes and functions across different species. These populations are expressed dynamically and act as important regulators in a variety of biological processes, especially in gene expression. Nevertheless, the functions and mechanisms of most lncRNAs remain unclear. In this review, we present recent progress in the identification of lncRNAs, their functions and molecular mechanisms, their roles in human diseases, their potential diagnostic and therapeutic applications as well as newer technologies for identifying deregulated lncRNAs in disease tissues.
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Affiliation(s)
- Ruifang Wu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Yuwen Su
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Haijing Wu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Yong Dai
- Clinical Medical Research Center, The Second Clinical Medical College of Jinan University (Shenzhen People's Hospital), Shenzhen, 518020, Guangdong, China
| | - Ming Zhao
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Road, Changsha, 410011, Hunan, China.
| | - Qianjin Lu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Road, Changsha, 410011, Hunan, China.
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