351
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Yoon JH, You BH, Park CH, Kim YJ, Nam JW, Lee SK. The long noncoding RNA LUCAT1 promotes tumorigenesis by controlling ubiquitination and stability of DNA methyltransferase 1 in esophageal squamous cell carcinoma. Cancer Lett 2017; 417:47-57. [PMID: 29247823 DOI: 10.1016/j.canlet.2017.12.016] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 12/21/2022]
Abstract
Available targeted therapies for esophageal squamous cell carcinoma (ESCC) are limited; thus, further genetic and epigenetic studies are needed. Recently, many long noncoding RNAs (lncRNAs) have been reported to be involved in various cancers. Here, we investigated whether the lncRNA LUCAT1 was related to the carcinogenesis of ESCC based on previous studies in lung cancer. LUCAT1 was significantly upregulated in ESCC cell lines and cancer tissue compared with normal cells and adjacent normal tissues. LUCAT1 knockdown reduced cell proliferation, induced apoptosis, and upregulated tumor-suppressor genes by reducing DNA methylation in KYSE-30 cells. Moreover, LUCAT1 siRNA reduced DNA methyltransferase 1 (DNMT1) protein levels without affecting transcription. Patients with high LUCAT1 expression had significantly lower survival rates than patients with low LUCAT1 expression. Our results thus suggest that LUCAT1 regulates the stability of DNMT1 and inhibits the expression of tumor suppressors through DNA methylation, leading to the formation and metastasis of ESCC. We identified LUCAT1 as a potential target for drug development and as a biomarker for ESCC.
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Affiliation(s)
- Jung-Ho Yoon
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Republic of Korea
| | - Bo-Hyun You
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 133791, Republic of Korea
| | - Chan Hyuk Park
- Division of Gastroenterology, Institute of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Republic of Korea
| | - Yeong Jin Kim
- Division of Gastroenterology, Institute of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Republic of Korea
| | - Jin-Wu Nam
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 133791, Republic of Korea; Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 133791, Republic of Korea
| | - Sang Kil Lee
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Republic of Korea; Division of Gastroenterology, Institute of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Republic of Korea.
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352
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Cao X, Xu J, Yue D. LncRNA-SNHG16 predicts poor prognosis and promotes tumor proliferation through epigenetically silencing p21 in bladder cancer. Cancer Gene Ther 2017; 25:10-17. [DOI: 10.1038/s41417-017-0006-x] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/09/2017] [Accepted: 10/14/2017] [Indexed: 01/27/2023]
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353
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Wieczorek E, Reszka E. mRNA, microRNA and lncRNA as novel bladder tumor markers. Clin Chim Acta 2017; 477:141-153. [PMID: 29224950 DOI: 10.1016/j.cca.2017.12.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/05/2017] [Accepted: 12/05/2017] [Indexed: 12/20/2022]
Abstract
Early detection of bladder cancer (BC) is essential for improvement of the patient's prognosis and general survival rates. Current diagnostic methods are still limited, so new specific and cost-effective biomarkers are emerging as the noninvasive tools in treatment decisions in recurrent BC. Gene expression and epigenetic profile can be analysed using quantitative real-time-PCR (qRT-PCR) method in urine, blood and tissue. This review provides an update of recent findings on BC molecular profile as novel markers in diagnosis and prognosis of bladder tumors. We describe mRNA-, microRNA- and lncRNA-based biomarkers involved in the BC detection, diagnosis, prediction of recurrence and monitoring after treatment.
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Affiliation(s)
- Edyta Wieczorek
- Department of Molecular Genetics and Epigenetics, Nofer Institute of Occupational Medicine, Lodz, Poland.
| | - Edyta Reszka
- Department of Molecular Genetics and Epigenetics, Nofer Institute of Occupational Medicine, Lodz, Poland
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354
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Pan L, Liang W, Gu J, Zang X, Huang Z, Shi H, Chen J, Fu M, Zhang P, Xiao X, Qian H, Xu W, Jiang P, Zhang X. Long noncoding RNA DANCR is activated by SALL4 and promotes the proliferation and invasion of gastric cancer cells. Oncotarget 2017; 9:1915-1930. [PMID: 29416741 PMCID: PMC5788609 DOI: 10.18632/oncotarget.23019] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/17/2017] [Indexed: 12/30/2022] Open
Abstract
Long noncoding RNAs (LncRNAs) play important roles in tumor development and progression. The expression of lncRNAs is frequently dysregulated in human cancer. DANCR (anti-differentiation noncoding RNA) is a newly identified lncRNA in human cancer, however, its functional roles and clinical value in gastric cancer (GC) remains unknown. In this study, we investigated the expression of DANCR in the tumor tissues and serum of GC patients and analyzed the correlation between DANCR expression levels and the clinicopathological characteristics. Our results showed that the expression of DANCR was higher in the tumor tissues than that in the adjacent non-cancerous tissues. The expression level of DANCR was also elevated in the serum of GC patients compared to that of healthy controls. The expression levels of DANCR were significantly associated with tumor size, TNM stage, lymphatic metastasis and invasion depth. DANCR knockdown inhibited the proliferation of GC cells by inducing cell cycle arrest and cell apoptosis. In addition, DANCR knockdown suppressed gastric cancer growth in vivo. Moreover, DANCR knockdown inhibited the migration and invasion of GC cells via the suppression of epithelial-mesenchymal transition (EMT). However, DANCR overexpression had the opposite effect. DANCR is activated by SALL4 in gastric cancer cells and exerted its oncogenic activities through the activation of β-catenin pathway. Taken together, our findings suggest that DANCR promotes the progression of gastric cancer and have the potential to serve as a novel diagnostic biomarker.
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Affiliation(s)
- Lei Pan
- Department of Breast Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Wei Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jianmei Gu
- Department of Clinical Laboratory, Nantong Tumor Hospital, Nantong, Jiangsu 226361, China
| | - Xueyan Zang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhenhua Huang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Hui Shi
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jingyan Chen
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Min Fu
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Peng Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiudi Xiao
- Department of Breast Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Pengcheng Jiang
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
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355
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Screening and identification of lncRNAs as potential biomarkers for pulmonary tuberculosis. Sci Rep 2017; 7:16751. [PMID: 29196714 PMCID: PMC5711916 DOI: 10.1038/s41598-017-17146-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 11/22/2017] [Indexed: 11/21/2022] Open
Abstract
Pulmonary tuberculosis (TB) is among the diseases with the highest morbidity and mortality worldwide. Effective diagnostic methods for TB are lacking. In this study, we investigated long non-coding RNAs (lncRNAs) in plasma using microarray and the potential diagnostic value of lncRNAs for TB. We found a total of 163 up-regulated lncRNAs and 348 down-regulated lncRNAs. Gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and coding-noncoding co-expression (CNC) analyses showed that functions of differentially expressed lncRNAs were mainly enriched in the regulation of alpha-beta T cell activation and the T cell receptor signalling pathway. Four differentially expressed lncRNAs, NR_038221 (fold change = 3.79, P < 0.01), NR_003142 (fold change = 1.69, P < 0.05), ENST00000570366 (fold change = 3.04, P < 0.05), and ENST00000422183 (fold change = 2.11, P < 0.001), were verified using RT-qPCR. Among those, NR_038221, NR_003142, and ENST00000570366 were found to be up-regulated, while ENST00000422183 was down-regulated. The value of the area under the curve (AUC) for the diagnostic model consisting of the four lncRNAs was 0.845 (sensitivity = 79.2%, specificity = 75%). We further predicted 85 mRNAs and 404 miRNAs that potentially interact with these lncRNAs. Our study revealed the potential value of lncRNAs as biomarkers for early diagnosis of TB and the underlying mechanisms of these abnormally expressed lncRNAs in the pathogenesis of TB.
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356
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PD-L1, inflammation, non-coding RNAs, and neuroblastoma: Immuno-oncology perspective. Semin Cancer Biol 2017; 52:53-65. [PMID: 29196189 DOI: 10.1016/j.semcancer.2017.11.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 11/11/2017] [Accepted: 11/16/2017] [Indexed: 12/21/2022]
Abstract
Neuroblastoma is the most common pediatric solid tumor of neural crest origin. The current treatment options for neuroblastoma produce severe side effects. Programmed death-ligand 1 (PD-L1), chronic inflammation, and non-coding RNAs are known to play a significant role in the pathogenesis of neuroblastoma. Cancer cells and the surrounding cells in the tumor microenvironment express PD-L1. Programmed death-1 (PD-1) is a co-receptor expressed predominantly by T cells. The binding of PD-1 to its ligands, PD-L1 or PD-L2, is vital for the physiologic regulation of the immune system. Chronic inflammation is involved in the recruitment of leukocytes, production of cytokines and chemokines that in turn, lead to survival, metastasis, and angiogenesis in neuroblastoma tumors. The miRNAs and long non-coding (lnc) RNAs have emerged as a novel class of non-coding RNAs that can regulate neuroblastoma associated cell-signaling pathways. The dysregulation of PD-1/PD-L1, inflammatory pathways, lncRNAs, and miRNAs have been reported in clinical and experimental samples of neuroblastoma. These signaling molecules are currently being evaluated for their potential as the biomarker and therapeutic targets in the management of neuroblastoma. A monoclonal antibody called dinutuximab (Unituxin) that attaches to a carbohydrate molecule GD2, on the surface of many neuroblastoma cells, is being used as an immunotherapy drug for neuroblastoma treatment. Atezolizumab (Tecentriq), an engineered monoclonal antibody against PD-L1, are currently in clinical trial for neuroblastoma patients. The lncRNA/miRNA-based therapeutics is being developed to deliver tumor suppressor lncRNAs/miRNAs or silencing of oncogenic lncRNAs/miRNAs. The focus of this review is to discuss the current knowledge on the immune checkpoint molecules, PD-1/PD-L1 signaling, inflammation, and non-coding RNAs in neuroblastoma.
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357
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Su R, Cao S, Ma J, Liu Y, Liu X, Zheng J, Chen J, Liu L, Cai H, Li Z, Zhao L, He Q, Xue Y. Knockdown of SOX2OT inhibits the malignant biological behaviors of glioblastoma stem cells via up-regulating the expression of miR-194-5p and miR-122. Mol Cancer 2017; 16:171. [PMID: 29132362 PMCID: PMC5683208 DOI: 10.1186/s12943-017-0737-1] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/29/2017] [Indexed: 12/22/2022] Open
Abstract
Background Accumulating evidence has highlighted the potential role of long non-coding RNAs (lncRNAs) in the biological behaviors of glioblastoma stem cells (GSCs). Here, we elucidated the function and possible molecular mechanisms of the effect of lncRNA-SOX2OT on the biological behaviors of GSCs. Results Real-time PCR demonstrated that SOX2OT expression was up-regulated in glioma tissues and GSCs. Knockdown of SOX2OT inhibited the proliferation, migration and invasion of GSCs, and promoted GSCs apoptosis. MiR-194-5p and miR-122 were down-regulated in human glioma tissues and GSCs, and miR-194-5p and miR-122 respectively exerted tumor-suppressive functions by inhibiting the proliferation, migration and invasion of GSCs, while promoting GSCs apoptosis. Knockdown of SOX2OT significantly increased the expression of miR-194-5p and miR-122 in GSCs. Dual-luciferase reporter assay revealed that SOX2OT bound to both miR-194-5p and miR-122. SOX3 and TDGF-1 were up-regulated in human glioma tissues and GSCs. Knockdown of SOX3 inhibited the proliferation, migration and invasion of GSCs, promoted GSCs apoptosis, and decreased TDGF-1 mRNA and protein expression through direct binding to the TDGF-1 promoter. Over-expression of miR-194-5p and miR-122 decreased the mRNA and protein expression of SOX3 by targeting its 3’UTR. Knockdown of TDGF-1 inhibited the proliferation, migration and invasion of GSCs, promoted GSCs apoptosis, and inhibited the JAK/STAT signaling pathway. Furthermore, SOX3 knockdown also inhibited the SOX2OT expression through direct binding to the SOX2OT promoter and formed a positive feedback loop. Conclusion This study is the first to demonstrate that the SOX2OT-miR-194-5p/miR-122-SOX3-TDGF-1 pathway forms a positive feedback loop and regulates the biological behaviors of GSCs, and these findings might provide a novel strategy for glioma treatment. Electronic supplementary material The online version of this article (10.1186/s12943-017-0737-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rui Su
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Shuo Cao
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Jun Ma
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Yunhui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.,Liaoning Research Center for Translational Medicine in Nervous System Disease, Shenyang, 110004, People's Republic of China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, People's Republic of China
| | - Xiaobai Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.,Liaoning Research Center for Translational Medicine in Nervous System Disease, Shenyang, 110004, People's Republic of China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, People's Republic of China
| | - Jian Zheng
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.,Liaoning Research Center for Translational Medicine in Nervous System Disease, Shenyang, 110004, People's Republic of China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, People's Republic of China
| | - Jiajia Chen
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Libo Liu
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Heng Cai
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.,Liaoning Research Center for Translational Medicine in Nervous System Disease, Shenyang, 110004, People's Republic of China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, People's Republic of China
| | - Zhen Li
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.,Liaoning Research Center for Translational Medicine in Nervous System Disease, Shenyang, 110004, People's Republic of China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, People's Republic of China
| | - Lini Zhao
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Qianru He
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China
| | - Yixue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, 110122, People's Republic of China. .,Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, People's Republic of China.
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358
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Long non-coding RNA00544 serves as a potential novel predictive and prognostic marker for HR+ HER2- subtype breast cancer. Sci Rep 2017; 7:12382. [PMID: 28959047 PMCID: PMC5620366 DOI: 10.1038/s41598-017-11066-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 07/28/2017] [Indexed: 12/31/2022] Open
Abstract
Luminal breast cancers (BC) account for majority of breast cancer. Due to its heterogeneity and the development of treatment resistance, luminal BC patients can vary substantially. Long noncoding RNAs (lncRNAs), as we known, is involved in breast cancer progression. Here, we aim to identify the lncRNAs which are involved in the particular type luminal BC progression. By Gene Chips analysis, we found a novel lncRNA00544, which was highly expressed in the metastatic axillary nodes compared with corresponding luminal BC tissues (fold change = 2.26, P = 0.043). This result was confirmed in luminal BC cell lines (p = 0.0113) and 49 paired breast cancer samples compared with in corresponding controls (p = 0.011). Furthermore, Kaplan-Meier survival curves of 373 breast cancer patients indicated that disease-free survival was significantly poor in breast cancer patients with high lncRNA00544 expression (p < 0.001). Univariate and multivariate Cox regression analyses showed that lncRNA00544 was a significant independent prognostic biomarker in luminal BC patients. Further analysis showed that the prognosis of high lncRNA00544 expression in breast cancer patients was actually related to HR + HER2- subtype. Together, our studies indicate that lncRNA00544 may represent a novel predictive and prognostic indicator in luminal BC patients.
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359
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Chen T, Gu C, Xue C, Yang T, Zhong Y, Liu S, Nie Y, Yang H. LncRNA-uc002mbe.2 Interacting with hnRNPA2B1 Mediates AKT Deactivation and p21 Up-Regulation Induced by Trichostatin in Liver Cancer Cells. Front Pharmacol 2017; 8:669. [PMID: 28993733 PMCID: PMC5622184 DOI: 10.3389/fphar.2017.00669] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 09/07/2017] [Indexed: 01/08/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been implicated in liver carcinogenesis. We previously showed that the induction of lncRNA-uc002mbe.2 is positively associated with the apoptotic effect of trichostatin A (TSA) in hepatocellular carcinoma (HCC) cells. The current study further analyzed the role of uc002mbe.2 in TSA-induced liver cancer cell death. The level of uc002mbe.2 was markedly increased by TSA in the cytoplasm of HCC cells. Knockdown of uc002mbe.2 prohibited TSA-induced G2/M cell cycle arrest, p21 induction, and apoptosis of Huh7 cells and reversed the TSA-mediated decrease in p-AKT. RNA pull-down and RNA-binding protein immunoprecipitation (RIP) assays revealed that TSA induced an interaction between uc002mbe.2 and heterogeneous nuclear ribonucleoprotein A2B1 (hnRNPA2B1) in Huh7 cells. This interaction mediated AKT deactivation and p21 induction in liver cancer cells. In an athymic xenograft mouse model, knockdown of uc002mbe.2 significantly prohibited the TSA-mediated reduction in tumor size and weight. In addition, the ability of TSA to reduce hnRNPA2B1 and p-AKT levels and induce p21 in the xenograft tumors was prevented by uc002mbe.2 knockdown. Therefore, the interaction of uc002mbe.2 and hnRNPA2B1 in mediating AKT deactivation and p21 induction is involved in the cytostatic effect of trichostatin in liver cancer cells.
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Affiliation(s)
- Ting Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Chengxin Gu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Cailin Xue
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Tao Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Yun Zhong
- Guangzhou Institute of Cardiovascular DiseaseGuangzhou, China
| | - Shiming Liu
- Guangzhou Institute of Cardiovascular DiseaseGuangzhou, China
| | - Yuqiang Nie
- Department of Gastroenterology, Guangzhou First People's Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Hui Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
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360
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Liu C, Zhang C, Yang J, Geng X, Du H, Ji X, Zhao H. Screening circular RNA expression patterns following focal cerebral ischemia in mice. Oncotarget 2017; 8:86535-86547. [PMID: 29156814 PMCID: PMC5689704 DOI: 10.18632/oncotarget.21238] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/07/2017] [Indexed: 12/31/2022] Open
Abstract
Circular RNAs (circRNAs) have been demonstrated to act as microRNA (miRNA) sponges and they play important roles in regulating gene expression through a circRNA-miRNA-gene pathway. The specific roles of circRNAs in the pathogenesis of cerebral ischemia, however, are still unclear. Thus, the aim of this study is to determine circRNA expression profiles in the ischemic brain after stroke, which was induced by 45 min of transient middle cerebral artery occlusion (MCAO). The results from the circRNA microarrays revealed that 1027 circRNAs were significantly altered 48 hours after reperfusion in the ischemic brain compared with the sham group. Among them, 914 circRNAs were significantly upregulated, and the remaining 113 were significantly downregulated. In addition, the expressions of the three selected circRNAs, mmu_circRNA_40001, mmu_circRNA_013120, and mmu_circRNA_40806, were verified using quantitative real-time polymerase chain reaction (qRT-PCR). After predicting their target genes, the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses were further used to predict the associated significant cell signaling pathways and functions. The results show that the most enriched pathways are associated with the Rap1 signaling pathway and the Hippo signaling pathway, which regulate cell survival and death. Finally, we constructed an interaction network of circRNA-miRNA-target genes, including 13 miRNAs and their corresponding genes, indicating that changes in circRNA are associated with genes related with brain injury and recovery. In conclusion, circRNAs are complicated in the pathological development of brain injury after stroke, suggesting novel diagnostic and therapeutic targets for stroke therapy.
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Affiliation(s)
- Cuiying Liu
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Chencheng Zhang
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Jian Yang
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Huishan Du
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Heng Zhao
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Stanford University, Stanford, CA, USA
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361
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Ma Q, Wu X, Wu J, Liang Z, Liu T. SERP1 is a novel marker of poor prognosis in pancreatic ductal adenocarcinoma patients via anti-apoptosis and regulating SRPRB/NF-κB axis. Int J Oncol 2017; 51:1104-1114. [PMID: 28902358 PMCID: PMC5592859 DOI: 10.3892/ijo.2017.4111] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 07/31/2017] [Indexed: 12/19/2022] Open
Abstract
Stress associated endoplasmic reticulum protein 1 (SERP1), can cause accumulation of unfolded proteins in ER stress. However, studies on the role of SERP1 in pancreatic ductal adenocarcinoma (PDAC) are still incomplete. The present study aimed at identifying whether SERP1 acts as a potential novel prognostic marker of PDAC, and analyzed its possible mechanism. GEO database analysis showed SERP1 was significantly upregulated in PDAC tissues, and strongly associated with advanced clinical stage of PDAC patients from TCGA database. Univariate and multivariate Cox regression analysis further revealed SERP1 high expression was an independent factor for the prognosis of PDAC. Gene set enrichment analysis (GSEA) revealed that SERP1 was mainly involved in regulating cell apoptosis and nuclear factor-κB (NF-κB) signaling pathway, and downregulated SERP1 significantly promoted PANC-1 cell apoptosis. To further explore its possible mechanism, protein-protein interaction (PPI) and gene ontology (GO) analysis showed the functions of proteins interacting with SERP1 were mainly enriched in regulating cell apoptosis, and SRP receptor β subunit (SRPRB) was the core of the whole PPI network. The expression of SERP1 was negatively correlated with SRPRB expression. In vitro, downregulated SERP1 significantly increased SRPRB expression. Furthermore, upregulated SRPRB could increase cell apoptosis rate and decreased the expression level of NF-κB and the phosphorylation NF-κB. The above results indicated that SERP1 as a potential novel prognostic marker of PDAC probably via regulating cell apoptosis and NF-κB activation, which may be associated with SRPRB.
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Affiliation(s)
- Qiang Ma
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Xiuxiu Wu
- Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Jing Wu
- Department of Medical Imaging, Beijing Huairou Hospital, University of Chinese Academy of Science, Beijing 101400, P.R. China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Tonghua Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
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362
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Cui Y, Yi L, Zhao JZ, Jiang YG. Long Noncoding RNA HOXA11-AS Functions as miRNA Sponge to Promote the Glioma Tumorigenesis Through Targeting miR-140-5p. DNA Cell Biol 2017; 36:822-828. [PMID: 28832185 DOI: 10.1089/dna.2017.3805] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have been proved as important regulators in many diseases, including cancers. HOXA11 antisense RNA (HOXA11-AS) is a novel identified lncRNA associated with cancer progression. However, the role of HOXA11-AS in glioma remains poorly understood and needs to be elucidated. The purpose of this study is to investigate the role and regulating mechanism of HOXA11-AS on gliomagenesis. Expression of HOXA11-AS was significantly upregulated in glioma tissue and cell lines compared with the adjacent normal tissue and cells. Moreover, patients with high HOXA11-AS expression had a shorter survival and poorer prognosis than that of lower expression. Loss-of-function experiments revealed that HOXA11-AS knockdown inhibited the proliferation, induced cell cycle arrest at G0/G1 phase, and enhanced the apoptosis. Bioinformatics prediction forecast that miR-140-5p directly targeted HOXA11-AS at 3'-UTR, which was confirmed by luciferase reporter assay. In vitro rescue experiment assays, miR-140-5p inhibitor transfection, could reverse the function of HOXA11-AS knockdown on the proliferation, cell cycle arrest, and apoptosis. Taken together, the present study illustrates that the pathway of HOXA11-AS sponging miR-140-5p might play a vital regulating role in the development and progression of glioma.
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Affiliation(s)
- Yan Cui
- 1 Department of Neurosurgery, The Second Xiangya Hospital of Central South University , Chang Sha, China
| | - Lei Yi
- 1 Department of Neurosurgery, The Second Xiangya Hospital of Central South University , Chang Sha, China
| | - Ji-Zong Zhao
- 1 Department of Neurosurgery, The Second Xiangya Hospital of Central South University , Chang Sha, China .,2 Department of Neurosurgery, Tiantan Hospital, Capital Medical University , Beijing, China
| | - Yu-Gang Jiang
- 1 Department of Neurosurgery, The Second Xiangya Hospital of Central South University , Chang Sha, China
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363
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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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364
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Xu D, Jiang Y, Yang L, Hou X, Wang J, Gu W, Wang X, Liu L, Zhang J, Lu H. Long noncoding RNAs expression profile and functional networks in rheumatoid arthritis. Oncotarget 2017; 8:95280-95292. [PMID: 29221127 PMCID: PMC5707021 DOI: 10.18632/oncotarget.20036] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 07/25/2017] [Indexed: 12/23/2022] Open
Abstract
The modifying effects of long noncoding RNAs (lncRNAs) in rheumatoid arthritis (RA) recently have drawn much attention; however, the underlying mechanisms remain largely unknown. Herein, we aim to investigate the expression profile of lncRNAs in RA and identify promising targets for RA diagnosis and treatment. Microarray screening and real-time PCR of lncRNAs were performed by use of serum samples from 3 RA patients and 3 healthy controls. Significantly differentially expressed lncRNAs were verified in serum samples from 43 RA patients and 40 healthy controls by real-time PCR. We found that there were 73 up-regulated and 61 down-regulated lncRNAs as well as 128 up-regulated and 37 down-regulated mRNAs in serum samples of RA patients. Validation in RA clinical samples indicated 5 of these lncRNAs were significantly up-regulated including RNA143598, RNA143596, HIX0032090, IGHCgamma1, and XLOC_002730. Significant association was observed between these lncRNAs and the disease course, erythrocyte sedimentation rate (ESR), rheumatoid factor (RF) as well as anti-cyclic citrullinated peptide (anti-CCP) antibody. Additionally, 55 of the differentially expressed mRNAs were associated with 41 lncRNAs and were involved in signaling pathways of toll like receptors (TLRs), nuclear factor-kappa B (NF-κB), and cytokine, especially the IRF3/IRF7 mediated signaling transduction. Our study firstly shows the specific profile of lncRNAs in the serum of RA patients and potential signaling pathways involved in RA pathogenesis, which may provide novel targets for the diagnosis and treatment of patients with RA.
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Affiliation(s)
- Donghua Xu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang 261000, China.,Clinical Medicine College of Weifang Medical University, Weifang 261000, China
| | - Ye Jiang
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Lu Yang
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xixing Hou
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang 261000, China
| | - Jihong Wang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang 261000, China
| | - Weijun Gu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang 261000, China
| | - Xiaodong Wang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang 261000, China
| | - Lanyu Liu
- Department of Gynecology and Obstetrics, Weifang Hospital of Maternal and Child Health, Weifang 261000, Shandong Province, China
| | - Juan Zhang
- Department of Rehabilitation, Affiliated Huai'an Hospital of Xuzhou Medical College and Second People's Hospital of Huai'an, Huai'an 223001, China
| | - Hongying Lu
- Functional Laboratory, Clinical Medicine College of Weifang Medical University, Weifang 261000, China
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365
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Zhou Y, Lu Y, Li R, Yan N, Li X, Dai T. Prognostic role of long non-coding RNA TUG1 expression in various cancers: a meta-analysis. Oncotarget 2017; 8:100499-100507. [PMID: 29245996 PMCID: PMC5725038 DOI: 10.18632/oncotarget.20037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/26/2017] [Indexed: 12/11/2022] Open
Abstract
Several studies were conducted to explore the prognostic role of long non-coding RNA taurine upregulated gene 1 (lncRNA TUG1) expression in various cancers, with contradictory. This study aims to summarize the prognostic role of lncRNA TUG1 expression in various cancers. Embase, PubMed and Cochrane Library were completely retrieved. The cohort studies focusing on the prognostic role of lncRNA TUG1 expression in various cancers were eligible. The endpoints were overall survival (OS) and clinicopathological parameters. 9 studies involving a total of 1,078 patients were identified. The results showed that high lncRNA TUG1 expression was obviously associated with worse OS when compared to the low lncRNA TUG1 expression (HR = 1.37, 95% CI = 1.07–1.76, P = 0.01; I2 = 85%). However, No distinct relationship was observed between the lncRNA TUG1 expression and age (OR = 0.99, 95% CI = 0.76–1.28, P = 0.92; I2 = 4%), gender (OR = 0.92, 95% CI = 0.70–1.22, P = 0.57; I2 = 0%), diameter (OR = 0.83, 95% CI = 0.34–2.01, P = 0.67; I2 = 85%), smoking (OR = 1.09, 95% CI = 0.37–3.21, P = 0.87; I2 = 73%), TNM stage (OR = 0.60, 95% CI = 0.25–1.43, P = 0.25; I2 = 86%) and lymph node metastasis (OR = 1.07, 95% CI = 0.47–2.45, P = 0.87; I2 = 86%). In conclusion, it was revealed that high lncRNA TUG1 expression is an unfavorable predictor of OS in patients with cancers, and lncRNA TUG1 expression is a promising prognostic biomarker for various cancers.
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Affiliation(s)
- Yongping Zhou
- Department of Hepatobiliary, Wuxi Second Hospital, Nanjing Medical University, Wuxi, China
| | - Yuxuan Lu
- School of Medicine, Tongji University, Shanghai, China
| | - Runmin Li
- School of Medicine, Tongji University, Shanghai, China
| | - Nana Yan
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, China
| | - Xiding Li
- Department of General Surgery, Wuxi Second Hospital, Nanjing Medical University, Wuxi, China
| | - Tu Dai
- Department of Hepatobiliary, Wuxi Second Hospital, Nanjing Medical University, Wuxi, China
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366
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Ma Y, Hu X, Shang C, Zhong M, Guo Y. Silencing of long non-coding RNA CCAT2 depressed malignancy of oral squamous cell carcinoma via Wnt/β-catenin pathway. Tumour Biol 2017; 39:1010428317717670. [PMID: 28671055 DOI: 10.1177/1010428317717670] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Oral squamous cell carcinoma is a common and lethal malignancy affecting the head and neck region. CCAT2 (colon cancer-associated transcript 2) gene is affiliated with long non-coding RNAs, which are often found to have important regulatory roles in cancers. This study aims to assess the expression and clinical significance of CCAT2 gene, identify its malignant biological behaviors, and explore the possible mechanisms in oral squamous cell carcinoma. CCAT2 expression was detected by quantitative real-time polymerase chain reaction, and its relationship with clinical factors was assayed using the Kaplan-Meier survival curve. The biological behaviors of CCAT2 and its potential mechanisms in oral squamous cell carcinoma were explored by the combined use of CCAT2 knockdown technology and the Wnt/β-catenin pathway agonist lithium chloride (LiCl). Our results showed that CCAT2 functioning as a potential oncogene was upregulated in oral squamous cell carcinoma. CCAT2 with high expression level was correlated with poor differentiation, higher T stage, and clinical stage, which made CCAT2 to be a prognostic biomarker in oral squamous cell carcinoma. LiCl-activated Wnt/β-catenin signaling pathway could partly restore the CCAT2-mediated malignant biological behaviors of oral squamous cell carcinoma cells by suppressing β-catenin, CCND1, and MYC and activating glycogen synthase kinase 3 beta expression. These findings might assist in the discovery of novel potential diagnostic and therapeutic target for oral squamous cell carcinoma, thereby improve the effects of clinical treatment in patients.
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Affiliation(s)
- Yuji Ma
- 1 Department of Central Laboratory, School of Stomatology, China Medical University, Shenyang, China.,2 Key Laboratory of Oral Disease, Liaoning Province, Shenyang, China.,3 Department of Oral Biology, School of Stomatology, China Medical University, Shenyang, China
| | - Xuanhao Hu
- 4 Department of Neurobiology, China Medical University, Shenyang, China
| | - Chao Shang
- 4 Department of Neurobiology, China Medical University, Shenyang, China
| | - Ming Zhong
- 1 Department of Central Laboratory, School of Stomatology, China Medical University, Shenyang, China.,2 Key Laboratory of Oral Disease, Liaoning Province, Shenyang, China
| | - Yan Guo
- 1 Department of Central Laboratory, School of Stomatology, China Medical University, Shenyang, China.,2 Key Laboratory of Oral Disease, Liaoning Province, Shenyang, China.,3 Department of Oral Biology, School of Stomatology, China Medical University, Shenyang, China
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367
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Zhang L, Xing Y, Gao Q, Sun X, Zhang D, Cao G. Combination of NRP1-mediated iRGD with 5-fluorouracil suppresses proliferation, migration and invasion of gastric cancer cells. Biomed Pharmacother 2017; 93:1136-1143. [PMID: 28738522 DOI: 10.1016/j.biopha.2017.06.103] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 06/22/2017] [Accepted: 06/29/2017] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer is one of the most of common cancers in the world. 5-Fluorouracil (5-FU) has been identified as one of the standard first-line chemotherapy drugs for locally advanced or metastatic gastric cancer. However, poor tumor penetration, bad selectivity and toxic side effects are the major limitations for the application of chemotherapy drugs in anticancer therapy. Recently, plenty of studies demonstrate that the novel tumor-homing peptide iRGD could promote the tumor-penetrating capability of chemotherapy drugs in multiple cancers, and neuropilin-1 (NRP1) protein is the critical mediator for iRGD. Here,we found that NRP1 protein expression was significantly up-regulated in gastric cancer tissues and cell lines by Immunohistochemistry and Western blot. And elevated NRP1 was notably associated with tumor differentiation (P=0.021), tumor size (P=0.004), tumor stage(P=0.028), lymph node metastasis(P=0.032), TNM tumor stage (P=0.006) and poorer prognosis. Functionally, the data of Methyl thiazolyl tetrazolium (MTT) assay, Colony formation assay and Transwell assay revealed that NRP1 could facilitate gastric cancer cells proliferation, migration and invasion. Furthermore, iRGD could strengthen the chemotherapy effect of 5-FU on gastric cancer cells through NRP1. Taken together, NPR1 might be a promising tumor target for gastric cancer, and combination of iRGD with 5-FU may be a novel and valuable approach to improving the prognosis of gastric cancer patients.
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Affiliation(s)
- Li Zhang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, PR China
| | - Yanfeng Xing
- Department of General Surgery, The Central Hospital of Tongchuan Mining Bureau, Tongchuan, Shaanxi 727000, PR China
| | - Qi Gao
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Xuejun Sun
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Di Zhang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, PR China
| | - Gang Cao
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, PR China.
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368
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Tan N, Li L, Bai L, Zhao K. [Expression of Serum LncRNA HOTAIR in Non-small Cell Lung Cancer
and Its Clinical Significance]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2017. [PMID: 28641698 PMCID: PMC5973358 DOI: 10.3779/j.issn.1009-3419.2017.06.06] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The expression of long noncoding RNA HOX antisense RNA (HOTAIR) is abnormal in a variety of tumors. The aim of this study is to explore the serum levels and clinical significance of HOTAIR in patients with non-small cell lung cancer (NSCLC). METHODS The serum levels of HOTAIR were detected by real-time quantitative polymerase chain reaction (PCR) in 64 NSCLC patients and 64 normal controls. The relationships between the serum levels of HOTAIR and clinical pathological parameters were analyzed. RESULTS Compared with normal controls, the serum levels of HOTAIR in patients with NSCLC increased significantly (P<0.01). The serum levels of HOTAIR were correlated with tumor size, tumor-node-metastasis (TNM) stage and lymph node metastasis (P<0.05), but not with age, gender, smoking, differentiation and histology (P>0.05). CONCLUSIONS The serum levels of HOTAIR in patients with NSCLC are significantly higher, and HOTAIR may be involved in the pathogenesis of NSCLC.
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Affiliation(s)
- Nan Tan
- Cadre Ward, the First Hospital of Xi'an, Xi'an 710002, China
| | - Lihong Li
- Cadre Ward, the First Hospital of Xi'an, Xi'an 710002, China
| | - Lu Bai
- Cadre Ward, the First Hospital of Xi'an, Xi'an 710002, China
| | - Kun Zhao
- Cadre Ward, the First Hospital of Xi'an, Xi'an 710002, China
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369
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Li N, Yang M, Shi K, Li W. Prognostic value of decreased long non-coding RNA TUSC7 expression in some solid tumors: a systematic review and meta-analysis. Oncotarget 2017; 8:59518-59526. [PMID: 28938655 PMCID: PMC5601751 DOI: 10.18632/oncotarget.18496] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 05/29/2017] [Indexed: 12/18/2022] Open
Abstract
Accumulating evidences indicated that tumor suppressor candidate 7 (TUSC7) is a putatively tumor suppressor gene in various tumors. We carried out current systematic review and meta-analysis to explore the decreased expression of TUSC7 associate with prognostic and clinicopathological characteristic in cancer patients. A literature collection search in the online electronic databases PubMed, Embase, Web of Science, and CNKI was conducted to obtain eligible studies (up to February 20, 2017). A total of nine studies comprise 757 patients were identified and included in present meta-analysis based on the selection and inclusion criteria. Overall, low expression of TUSC7 was associated with significantly unfavorable overall survival (OS) (HR = 2.90, 95% CI: 2.12–3.98, P < 0.001), disease free survival (DFS) (HR = 2.00, 95% CI: 1.49–2.68, P < 0.001) and disease-specific survival (DSS) (HR = 2.57, 95% CI: 1.23–5.39, P = 0.012) in tumors patients. Moreover, we also found that down-regulation of TUSC7 associated with distant metastasis (OR = 2.85, 95% CI: 1.46–5.55, P = 0.002) and larger tumor size (OR = 0.41, 95% CI: 0.23–0.72, P = 0.002). Our meta-analysis demonstrated that cancers patients detected with low TUSC7 expression were more prone to develop distant metastasis. TUSC7 might act as a potentially and promising common prognostic markers in some solid tumors.
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Affiliation(s)
- Na Li
- Department of Pathology, The First Affiliated Hospital of Hunan University of Medicine, Huaihua, Hunan Province, China
| | - Meilan Yang
- Department of Pathology, The First Affiliated Hospital of Hunan University of Medicine, Huaihua, Hunan Province, China
| | - Ke Shi
- Department of Geriatrics, Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Wei Li
- Department of Geriatrics, Xiangya Hospital of Central South University, Changsha, Hunan Province, China
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370
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Nobili L, Ronchetti D, Taiana E, Neri A. Long non-coding RNAs in B-cell malignancies: a comprehensive overview. Oncotarget 2017; 8:60605-60623. [PMID: 28947998 PMCID: PMC5601166 DOI: 10.18632/oncotarget.17303] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/16/2017] [Indexed: 01/06/2023] Open
Abstract
B-cell malignancies constitute a large part of hematological neoplasias. They represent a heterogeneous group of diseases, including Hodgkin's lymphoma, most non-Hodgkin's lymphomas (NHL), some leukemias and myelomas. B-cell malignancies reflect defined stages of normal B-cell differentiation and this represents the major basis for their classification. Long non-coding RNAs (lncRNAs) are non-protein-coding transcripts longer than 200 nucleotides, for which many recent studies have demonstrated a function in regulating gene expression, cell biology and carcinogenesis. Deregulated expression levels of lncRNAs have been observed in various types of cancers including hematological malignancies. The involvement of lncRNAs in cancer initiation and progression and their attractive features both as biomarker and for therapeutic research are becoming increasingly evident. In this review, we summarize the recent literature to highlight the status of the knowledge of lncRNAs role in normal B-cell development and in the pathogenesis of B-cell tumors.
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Affiliation(s)
- Lucia Nobili
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Domenica Ronchetti
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Elisa Taiana
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Antonino Neri
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
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371
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Zheng S, Zheng D, Dong C, Jiang J, Xie J, Sun Y, Chen H. Development of a novel prognostic signature of long non-coding RNAs in lung adenocarcinoma. J Cancer Res Clin Oncol 2017; 143:1649-1657. [PMID: 28409273 DOI: 10.1007/s00432-017-2411-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/29/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Increasing evidence suggests that long non-coding RNAs (lncRNAs) may play a crucial role in many biological processes in a variety of cancers and serve as the basis for many clinical applications including prognostic biomarkers and potential therapeutic targets. The aim of this study is to develop a prognostic lncRNA signature with RNA-seq data in lung adenocarcinomas. METHODS LncRNA expression profiles and clinical data of lung adenocarcinoma patients from The Cancer Genome Atlas (TCGA) were analyzed. Univariate Cox proportional regression model was used to identify prognostic lncRNAs, and then multivariate Cox proportional regression model was used to develop a prognostic signature. Survivals were compared using log-rank test, and the biological implications of prognostic lncRNAs were analyzed using the KEGG pathway functional enrichment analysis. RESULTS We identified eight lncRNAs which had prognostic association with p value <0.01 in a TCGA lung adenocarcinoma cohort of 478 patients. Then a novel prognostic signature with the eight lncRNAs was developed using Cox regression model. Signature high-risk cases had worse overall survival (OS, median 85.97 vs. 38.34 months, p < 0.001) and disease-free survival (DFS, median 44.02 vs. 26.58 months, p = 0.007) than low-risk cases. Multivariate Cox regression analysis suggested that the eight-lncRNA signature was independent of clinical and pathological factors. KEGG pathway functional enrichment analysis indicated potential functional roles of the eight prognostic lncRNAs in tumorigenesis. CONCLUSIONS Our findings suggest that the eight-lncRNA signature might provide an effective independent prognostic model for the prediction of lung adenocarcinoma patients.
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Affiliation(s)
- Shanbo Zheng
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai, 200032, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Difan Zheng
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai, 200032, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chuanpeng Dong
- Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jiahua Jiang
- Department of Translational Medicine, Shanghai Hengrui Pharmaceuticals Co. Ltd., Shanghai, China
| | - Juntao Xie
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai, 200032, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yihua Sun
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai, 200032, People's Republic of China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Haiquan Chen
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, 270 Dong-An Road, Shanghai, 200032, People's Republic of China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
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372
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Smolle MA, Bauernhofer T, Pummer K, Calin GA, Pichler M. Current Insights into Long Non-Coding RNAs (LncRNAs) in Prostate Cancer. Int J Mol Sci 2017; 18:ijms18020473. [PMID: 28241429 PMCID: PMC5344005 DOI: 10.3390/ijms18020473] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 02/09/2017] [Accepted: 02/16/2017] [Indexed: 12/23/2022] Open
Abstract
The importance of long non-coding RNAs (lncRNAs) in the pathogenesis of various malignancies has been uncovered over the last few years. Their dysregulation often contributes to or is a result of tumour progression. In prostate cancer, the most common malignancy in men, lncRNAs can promote castration resistance, cell proliferation, invasion, and metastatic spread. Expression patterns of lncRNAs often change during tumour progression; their expression levels may constantly rise (e.g., HOX transcript antisense RNA, HOTAIR), or steadily decrease (e.g., downregulated RNA in cancer, DRAIC). In prostate cancer, lncRNAs likewise have diagnostic (e.g., prostate cancer antigen 3, PCA3), prognostic (e.g., second chromosome locus associated with prostate-1, SChLAP1), and predictive (e.g., metastasis-associated lung adenocarcinoma transcript-1, MALAT-1) functions. Considering their dynamic role in prostate cancer, lncRNAs may also serve as therapeutic targets, helping to prevent development of castration resistance, maintain stable disease, and prohibit metastatic spread.
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Affiliation(s)
- Maria A Smolle
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, A-8036 Graz, Austria.
- Department of Orthopaedic and Trauma Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria.
| | - Thomas Bauernhofer
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, A-8036 Graz, Austria.
| | - Karl Pummer
- Department of Urology, Medical University of Graz, Auenbruggerplatz 5/6, A-8036 Graz, Austria.
| | - George A Calin
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer, 1515 Holcombe Blvd., Houston, TX 77030, USA.
- Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA.
| | - Martin Pichler
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, A-8036 Graz, Austria.
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer, 1515 Holcombe Blvd., Houston, TX 77030, USA.
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Ma Z, Gu S, Song M, Yan C, Hui B, Ji H, Wang J, Zhang J, Wang K, Zhao Q. Long non-coding RNA SNHG17 is an unfavourable prognostic factor and promotes cell proliferation by epigenetically silencing P57 in colorectal cancer. MOLECULAR BIOSYSTEMS 2017; 13:2350-2361. [PMID: 28933484 DOI: 10.1039/c7mb00280g] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The first report of potential mechanisms of IncRNA SNHG17 in CRC, prompting the development of IncRNA-directed diagnosis and treatments.
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