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lncRNA AND CANCER

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https://www.readbyqxmd.com/read/28430799/diagnostic-and-prognostic-value-of-long-noncoding-rnas-as-biomarkers-in-urothelial-carcinoma
#1
Johanna Droop, Tibor Szarvas, Wolfgang A Schulz, Christian Niedworok, Günter Niegisch, Kathrin Scheckenbach, Michèle J Hoffmann
Many long noncoding RNAs (lncRNAs) are deregulated in cancer and contribute to oncogenesis. In urothelial carcinoma (UC), several lncRNAs have been reported to be overexpressed and proposed as biomarkers. As most reports have not been confirmed independently in large tissue sets, we aimed to validate the diagnostic and prognostic value of lncRNA upregulation in independent cohorts of UC patients. Thus, expression of seven lncRNA candidates (GAS5, H19, linc-UBC1, MALAT1, ncRAN, TUG1, UCA1) was measured by RT-qPCR in cell lines and tissues and correlated to clinicopathological parameters including follow-up data (set 1: N n = 10; T n = 106)...
2017: PloS One
https://www.readbyqxmd.com/read/28430582/lncrna-chrf-induced-mir-489-loss-promotes-metastasis-of-colorectal-cancer-via-twist1-emt-signaling-pathway
#2
Youmao Tao, Tao Han, Tao Zhang, Chong Ma, Caixia Sun
microRNA-489 (miR-489) is a novel cancer-related miRNAs and functions as a tumor suppressor in human cancers. While, the clinical significance of miR-489 and its role in colorectal cancer (CRC) remain rarely known. Here, we found that the levels of miR-489 in CRC tissues were significantly lower than those in matched tumor-adjacent tissues. Furthermore, decreased levels of miR-489 also observed in CRC cell lines compared to HIEC cells. Clinicopathological analysis revealed that miR-489 underexpression was positively correlated with advanced pT stage, pN stage and AJCC stage...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429752/lncrna-hit-promotes-cell-proliferation-of-non-small-cell-lung-cancer-by-association-with-e2f1
#3
L Yu, F Fang, S Lu, X Li, Y Yang, Z Wang
Lung cancer is the leading cause of cancer-related death around the world. Long noncoding RNA (lncRNA) has pivotal roles in cancer occurrence and development. However, only a few lncRNAs have been functionally characterized. In the present study, we investigated the effects of lncRNA-HIT (HOXA transcript induced by TGFβ) expression on non-small cell lung cancer (NSCLC) cell phenotype with the gain-of-function and loss-of-function assays. We found that ectopic expression or knockdown of lncRNA-HIT markedly increased or decreased NSCLC cell proliferation, respectively...
April 21, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28428004/long-noncoding-rna-awpph-promotes-hepatocellular-carcinoma-progression-through-ybx1-and-serves-as-a-prognostic-biomarker
#4
Xiaodong Zhao, Yanbo Liu, Shuo Yu
Long noncoding RNAs (lncRNAs) have been shown to play important roles in various cancers. However, the clinical significances and biological roles of lncRNAs in hepatocellular carcinoma (HCC) remain largely unknown. In this study, using online-available data sets and quantitative real-time PCR, we identified a novel lncRNA termed lncRNA-AWPPH, which is highly expressed in HCC tissues. Its upregulation is correlated with encapsulation incomplete, microvascular invasion, advanced TNM stage and BCLC stage. Cox proportional hazards regression analysis revealed that high lncRNA-AWPPH expression is an independent prognostic factor for poor recurrence-free and overall survival...
April 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28427159/genome-wide-analysis-of-long-noncoding-rna-and-mrna-co-expression-profile-in-intrahepatic-cholangiocarcinoma-tissue-by-rna-sequencing
#5
Wenhui Yang, Yuan Li, Xia Song, Jun Xu, Jun Xie
Long noncoding RNAs (lncRNAs), which are pervasively transcribed in the genome, are emerging in molecular biology as crucial regulators of cancer. RNA-seq data were downloaded from GEO of NCBI and further analyzed to identify novel targets in intrahepatic cholangiocarcinoma (iCCA).We investigated differences in lncRNA and mRNA profiles between 7 pairs of iCCA and adjacent normal tissues. 230 lncRNAs were differentially expressed more than four-fold change in iCCA tissues. Among these, 97 were upregulated and 133 downregulated relatively to normal tissues...
February 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425476/lncrnas2pathways-identifying-the-pathways-influenced-by-a-set-of-lncrnas-of-interest-based-on-a-global-network-propagation-method
#6
Junwei Han, Siyao Liu, Zeguo Sun, Yunpeng Zhang, Fan Zhang, Chunlong Zhang, Desi Shang, Haixiu Yang, Fei Su, Yanjun Xu, Chunquan Li, Huan Ren, Xia Li
Long non-coding RNAs (lncRNAs) have been demonstrated to play essential roles in diverse cellular processes and biological functions. Exploring the functions associated with lncRNAs may help provide insight into their underlying biological mechanisms. The current methods primarily focus on investigating the functions of individual lncRNAs; however, essential biological functions may be affected by the combinatorial effects of multiple lncRNAs. Here, we have developed a novel computational method, LncRNAs2Pathways, to identify the functional pathways influenced by the combinatorial effects of a set of lncRNAs of interest based on a global network propagation algorithm...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423738/lncrna-snhg1-a-non-degradable-sponge-for-mir-338-promotes-expression-of-proto-oncogene-cst3-in-primary-esophageal-cancer-cells
#7
Yan Yan, Qingxia Fan, Liping Wang, Yue Zhou, Jianhua Li, Kun Zhou
Competing endogenous RNA (ceRNA) is a newly proposed mechanism that describes a crosstalk among lncRNAs, mRNAs and their shared miRNAs. In this study, the role of miR-338-3p (miR-338) in the progression of esophageal cancer and its involve in the ceRNA regulatory circuit lncRNA-Snhg1/CST3 were explored. MiR-338 displayed a 30% decreased expression in esophageal squamous cell carcinoma tissues compared with the adjacent. Then, proto-oncogene CST3 was predicted and validated as a target gene of miR-338. Gain-and-loss-function experiments indicated that miR-338 suppressed expression of CST3 protein (also Cystatin C, CysC), promoted expression of apoptotic proteins caspase-8/3, attenuated esophageal carcinoma cell growth and induced its apoptosis...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423704/prognostic-and-clinicopathological-role-of-long-non-coding-rna-uca1-in-various-carcinomas
#8
Xiaoxiong Wang, Fei Peng, Liang Cheng, Guang Yang, Daming Zhang, Jiaqi Liu, Xin Chen, Shiguang Zhao
Urothelial cancer associated 1 (UCA1) as an oncogenic long non-coding RNA (LncRNA) was aberrantly upregulated in various solid tumors. Numerous studies have demonstrated overexpression of UCA1 is an unfavorable prognostic indicator in cancer patients. This study aimed to further explore the prognosis role and clinical significance of UCA1 in cancer. Eligible studies were recruited by a systematic search in PubMed, Embase, Cochrane Library and Web of Science databases. A total of 19/16 studies with 1587/1291 cancer patients were included to evaluate the association between UCA1 expression and overall survival (OS) and clinicopathological factors of malignancies by computing hazard ratio (HR), odds ratios (OR) and confidence interval (CI)...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423669/the-novel-long-non-coding-rna-talnec2-regulates-tumor-cell-growth-and-the-stemness-and-radiation-response-of-glioma-stem-cells
#9
Shlomit Brodie, Hae Kyung Lee, Wei Jiang, Simona Cazacu, Cunli Xiang, Laila M Poisson, Indrani Datta, Steve Kalkanis, Doron Ginsberg, Chaya Brodie
Despite advances in novel therapeutic approaches for the treatment of glioblastoma (GBM), the median survival of 12-14 months has not changed significantly. Therefore, there is an imperative need to identify molecular mechanisms that play a role in patient survival. Here, we analyzed the expression and functions of a novel lncRNA, TALNEC2 that was identified using RNA seq of E2F1-regulated lncRNAs. TALNEC2 was localized to the cytosol and its expression was E2F1-regulated and cell-cycle dependent. TALNEC2 was highly expressed in GBM with poor prognosis, in GBM specimens derived from short-term survivors and in glioma cells and glioma stem cells (GSCs)...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423647/upregulation-of-the-lncrna-meg3-induces-autophagy-to-inhibit-tumorigenesis-and-progression-of-epithelial-ovarian-carcinoma-by-regulating-activity-of-atg3
#10
Yin-Ling Xiu, Kai-Xuan Sun, Xi Chen, Shuo Chen, Yang Zhao, Qing-Guo Guo, Zhi-Hong Zong
Maternally expressed gene 3 (Meg3), a long non-coding RNA, has been reported to be associated with the pathogenesis of multiple malignancies. However, little is known regarding the role of Meg3 in epithelial ovarian cancer (EOC). In this study, we found that the expression of Meg3 was lower in epithelial ovarian carcinoma, and has potential to be considered as a biomarker for ovarian cancer. After transfecting the ovarian cancer cell lines OVCAR3 and A2780 with Meg3, phenotypic changes and autophagy-related molecules were examined...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423601/a-novel-lncrna-gasl1-inhibits-cell-proliferation-and-restricts-e2f1-activity
#11
Lital Gasri-Plotnitsky, Aviv Ovadia, Katerina Shamalov, Tali Nizri-Megnaji, Shimrit Meir, Irit Zurer, Cyrille J Cohen, Doron Ginsberg
The human genome encodes thousands of unique long non-coding RNAs (lncRNAs), many of which are emerging as critical regulators of cell fate. However, their functions as well as their transcriptional regulation are only partially understood. The E2F1 transcription factor induces both proliferation and apoptosis, and is a critical downstream target of the tumor suppressor, RB. Here, we provide evidence that a novel lncRNA named GASL1 is transcriptionally regulated by E2F1; GASL1 levels are elevated upon activation of exogenous E2F1 or endogenous E2Fs...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423525/the-combination-of-circulating-long-noncoding-rnas-ak001058-inhba-as1-mir4435-2hg-and-cebpa-as1-fragments-in-plasma-serve-as-diagnostic-markers-for-gastric-cancer
#12
Dong Ke, Hanwei Li, Yi Zhang, Yinghong An, Hanjiang Fu, Xuedong Fang, Xiaofei Zheng
BACKGROUND: Suitable diagnostic markers for cancers are urgently required in clinical practice. Long non-coding RNAs, which have been reported in many cancer types, are a potential new class of biomarkers for tumor diagnosis. RESULTS: Five lncRNAs, including AK001058, INHBA-AS1, MIR4435-2HG, UCA1 and CEBPA-AS1 were validated to be increased in gastric cancer tissues. Furthermore, we found that plasma level of these five lncRNAs were significantly higher in gastric cancer patients compared with normal controls...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420874/therapeutic-targeting-using-tumor-specific-peptides-inhibits-long-non-coding-rna-hotair-activity-in-ovarian-and-breast-cancer
#13
Ali R Özeş, Yinu Wang, Xingyue Zong, Fang Fang, Jay Pilrose, Kenneth P Nephew
Long non-coding RNAs (lncRNAs) play key roles in human diseases, including cancer. Functional studies of the lncRNA HOTAIR (HOX transcript antisense RNA) provide compelling evidence for therapeutic targeting of HOTAIR in cancer, but targeting lncRNAs in vivo has proven to be difficult. In the current study, we describe a peptide nucleic acids (PNA)-based approach to block the ability of HOTAIR to interact with EZH2 and subsequently inhibit HOTAIR-EZH2 activity and resensitize resistant ovarian tumors to platinum...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28420424/a-novel-lncrna-uc-134-represses-hepatocellular-carcinoma-progression-by-inhibiting-cul4a-mediated-ubiquitination-of-lats1
#14
Wen Ni, Yuqin Zhang, Zetao Zhan, Feng Ye, Yonghao Liang, Jing Huang, Keli Chen, Longhua Chen, Yi Ding
BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide, and tumor recurrence and metastasis are major factors that contribute to the poor outcome of patients with HCC. Long noncoding RNAs (lncRNAs) are known to regulate different tumorigenic processes, and a growing body of evidence indicates that Hippo kinase signaling is inactivated in many cancers. However, the upstream lncRNA regulators of Hippo kinase signaling in HCC are poorly understood. METHODS: Using a lncRNA microarray, we identified a novel lncRNA, uc...
April 19, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28418933/genetic-variation-of-long-non-coding-rna-tincr-contribute-to-the-susceptibility-and-progression-of-colorectal-cancer
#15
Yongbin Zheng, Chao Yang, Shilun Tong, Yu Ding, Wenhong Deng, Dan Song, Kuang Xiao
Colorectal cancer (CRC) accounts for the leading causes of cancer-related morbidity and mortality. However, a large part of heritable factors are warranted to be explored. Long non-coding RNAs (lncRNAs) serve critical roles in cancer development and progression. Herein, we explored effect of genetic variants of Tissue differentiation-inducing non-protein coding RNA (TINCR), a key lncRNA required for somatic tissue differentiation and tumor progression, on risk and progression of CRC. Three tagSNPs, including rs2288947, rs8105637, and rs12610531, were evaluated in in a two-stage, case-control study...
March 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418724/long-noncoding-rna-meg3-negatively-regulates-proliferation-and-angiogenesis-in-vascular-endothelial-cells
#16
Chao He, Wei Yang, Jun Yang, Jiawang Ding, Song Li, Hui Wu, Fei Zhou, Yurong Jiang, Lin Teng, Jian Yang
Long noncoding RNA (lncRNA) MEG3 is an important tumor suppressor in several types of human cancers. However, the biological function and underlying mechanism of MEG3 in vascular endothelial cells (VECs) remain unknown. In the present study, we demonstrated the functional importance of lncRNA MEG3 in proliferation and angiogenesis of VECs. MEG3 overexpression significantly suppressed the proliferation and in vitro angiogenesis in VECs, whereas knockdown of MEG3 had the opposite effect. Furthermore, we found that MEG3 exerts its function through negatively regulating miR-9 by acting as a microRNA sponge...
April 18, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28416735/reciprocal-control-of-lncrna-bcat1-and-%C3%AE-catenin-pathway-reveals-lncrna-bcat1-long-non-coding-rna-acts-as-a-tumor-suppressor-in-colorectal-cancer
#17
Fei Xie, Xudong Xiang, Qionglin Huang, Pengzhan Ran, Yuncang Yuan, Qian Li, Guoxiang Qi, Xiaopeng Guo, Chunjie Xiao, Shangyong Zheng
β-catenin plays a major role in tumor development and progression. The present study found that β-catenin was upregulated in 30 samples of colorectal cancer (CRC) tissue as compared to adjacent non-tumor tissues. Analysis of long non-coding RNA (lncRNA) expression profiles using the GSE18560 and GSE44097 datasets, which were generated via the Affymetrix plus 2.0 microarray platform and downloaded from the GEO database, revealed 20 differentially expressed lncRNAs following β-catenin knockdown. We focused on AK091631, a novel lncRNA, which we named lncRNA-β-catenin associated transcript 1 (LncRNA-BCAT1)...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415801/identification-of-long-non-coding-rnas-that-stimulate-cell-survival-in-bladder-cancer
#18
Aleksandra M Dudek, Sabrina J Boer, Nanda Boon, J Alfred Witjes, Lambertus A L M Kiemeney, Gerald W Verhaegh
For many years, research on the biology underlying bladder cancer focused on protein-coding genes which cover only about 3% of the human genome. Recently, it was discovered that a large part of the human genome is actively transcribed as long non-coding RNAs (lncRNAs). LncRNAs are master regulators of gene expression and several lncRNAs were shown to play a role in bladder cancer development and progression. Here, we analyzed lncRNA expression in muscle-invasive bladder cancer (MIBC) using the MiTranscriptome database of cancer lncRNA expression profiles, and we studied their function in bladder cancer-derived tumor cells...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415684/the-long-noncoding-rna-linc-ned125-controls-the-expression-of-medulloblastoma-driver-genes-by-microrna-sponge-activity
#19
Pietro Laneve, Agnese Po, Annarita Favia, Ivano Legnini, Vincenzo Alfano, Jessica Rea, Valerio Di Carlo, Valeria Bevilacqua, Evelina Miele, Angela Mastronuzzi, Andrea Carai, Franco Locatelli, Irene Bozzoni, Elisabetta Ferretti, Elisa Caffarelli
Long noncoding RNAs (lncRNAs) are major regulators of physiological and disease-related gene expression, particularly in the central nervous system. Dysregulated lncRNA expression has been documented in several human cancers, and their tissue-specificity makes them attractive candidates as diagnostic/prognostic biomarkers and/or therapeutic agents. Here we show that linc-NeD125, which we previously characterized as a neuronal-induced lncRNA, is significantly overexpressed in Group 4 medulloblastomas (G4 MBs), the largest and least well characterized molecular MB subgroup...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415631/lncrna-hotair-acts-a-competing-endogenous-rna-to-control-the-expression-of-notch3-via-sponging-mir-613-in-pancreatic-cancer
#20
Huihua Cai, Jie Yao, Yong An, Xuemin Chen, Weibo Chen, Di Wu, Boyang Luo, Yong Yang, Yong Jiang, Donglin Sun, Xiaozhou He
Pancreatic cancer is one of the most deadly cancers with a poor prognosis. Though studies have implicated the roles of microRNAs in pancreatic cancer progression, little is known about the role of miR-613 in pancreatic cancer. In the present study, the expression of miR-613 was down-regulated in pancreatic cancer tissues and cancer cell lines. Down-regulation of miR-613 was positively correlated with tumor differentiation, advanced TNM stage, nodal metastasis and shorter overall survival in patients with pancreatic cancer...
March 22, 2017: Oncotarget
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