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Jianyin Long, Shawn S Badal, Zengchun Ye, Yin Wang, Bernard A Ayanga, Daniel L Galvan, Nathanael H Green, Benny H Chang, Paul A Overbeek, Farhad R Danesh
The regulatory roles of long noncoding RNAs (lncRNAs) in transcriptional coactivators are still largely unknown. Here, we have shown that the peroxisome proliferator-activated receptor γ (PPARγ) coactivator α (PGC-1α, encoded by Ppargc1a) is functionally regulated by the lncRNA taurine-upregulated gene 1 (Tug1). Further, we have described a role for Tug1 in the regulation of mitochondrial function in podocytes. Using a murine model of diabetic nephropathy (DN), we performed an unbiased RNA-sequencing (RNA-seq) analysis of kidney glomeruli and identified Tug1 as a differentially expressed lncRNA in the diabetic milieu...
October 17, 2016: Journal of Clinical Investigation
Szu Yuan Li, Katalin Susztak
An increasing amount of evidence suggests that metabolic alterations play a key role in chronic kidney disease (CKD) pathogenesis. In this issue of the JCI, Long et al. report that the long noncoding RNA (lncRNA) taurine-upregulated 1 (Tug1) contributes to CKD development. The authors show that Tug1 regulates mitochondrial function in podocytes by epigenetic targeting of expression of the transcription factor PPARγ coactivator 1α (PGC-1α, encoded by Ppargc1a). Transgenic overexpression of Tug1 specifically in podocytes ameliorated diabetes-induced CKD in mice...
October 17, 2016: Journal of Clinical Investigation
Defeng Kuang, Xiaoping Zhang, Shaofang Hua, Wei Dong, Zhiguo Li
Ovarian cancer is the fifth leading cause of cancer-related death in women worldwide, and recent studies have highlighted the role of long non-coding RNAs (lncRNAs) in cancer development. However, the role of lncRNAs in ovarian cancer is largely unclear. In this study, we focused on the taurine up-regulated gene 1 (TUG1) and examined its molecular mechanism in ovarian cancer. Here, we reported that TUG1 was up-regulated in ovarian cancer tissues and ovarian cancer cells, and TUG1 expression was positively correlated with tumor grade and FIGO stage...
September 28, 2016: Experimental and Molecular Pathology
Chu-Hai Xie, Yan-Ming Cao, Yan Huang, Qun-Wei Shi, Jian-Hong Guo, Zi-Wen Fan, Ju-Gen Li, Bin-Wei Chen, Bo-Yi Wu
Recent studies have shown that long non-coding RNAs (lncRNAs) have critical roles in tumorigenesis, including osteosarcoma. The lncRNA taurine-upregulated gene 1 (TUG1) was reported to be involved in the progression of osteosarcoma. Here, we investigated the role of TUG1 in osteosarcoma cells and the underlying mechanism. TUG1 expression was measured in osteosarcoma cell lines and human normal osteoblast cells by quantitative real-time PCR (qRT-PCR). The effects of TUG1 on osteosarcoma cells were studied by RNA interference in vitro and in vivo...
September 22, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Hui-Yuan Zhai, Ming-Hua Sui, Xiao Yu, Zhen Qu, Jin-Chen Hu, Hai-Qing Sun, Hai-Tao Zheng, Kai Zhou, Li-Xin Jiang
BACKGROUND Colon cancer is one of the most prevalent and deadly cancers worldwide. It is still necessary to further define the mechanisms and explore therapeutic targets of colon cancer. Dysregulation of long noncoding RNAs (lncRNAs) has been shown to be correlated with diverse biological processes, including tumorigenesis. This study aimed to characterize the biological mechanism of taurine-upregulated gene 1 (TUG1) in colon cancer. MATERIAL AND METHODS qRT-PCR was used to analyze the expression level of TUG1 and p63 in 75 colon cancer tissues and the matched adjacent non-tumor tissue...
September 16, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Chao Chen, Guangqing Cheng, Xiaoni Yang, Changsheng Li, Ran Shi, Ningning Zhao
Endothelial cell (EC) apoptosis is a crucial process for the development of atherosclerosis. Tanshinol is reported to protect vascular endothelia and attenuate the formation of atherosclerosis. However, the potential molecule mechanism of the protective role of tanshinol in atherosclerosis need to be further investigated. ApoE(-/-)mice were fed with a high-fat diet and treated with tanshinol to detect the effect of tanshinol on endothelial cells apoptosis with TUNEL staining assay. qRT-PCR and Western blot were performed to examine the expression of TUG1 and miR-26a in endothelial cells...
2016: American Journal of Translational Research
Pei-Chin Lin, Hsien-Da Huang, Chun-Chi Chang, Ya-Sian Chang, Ju-Chen Yen, Chien-Chih Lee, Wen-Hsin Chang, Ta-Chih Liu, Jan-Gowth Chang
BACKGROUND: Long noncoding RNAs (lncRNAs) play crucial roles in tumorigenesis, and lncRNA taurine-upregulated gene 1 (TUG1) has been proven to be associated with several human cancers. However, the mechanisms of TUG1-involved regulation remain largely unknown. METHODS: We examined the expressions of TUG1 in a cohort of 89 patients with non-small cell lung cancer (NSCLC) to determine the association between TUG1 expression and clinical parameters. We used circular chromosome conformation capture (4C) coupled with next-generation sequencing to explore the genome regions that interact with TUG1 and the TUG1-mediated regulation...
2016: BMC Cancer
Robert Iliev, Renata Kleinova, Jaroslav Juracek, Jan Dolezel, Zuzana Ozanova, Michal Fedorko, Dalibor Pacik, Marek Svoboda, Michal Stanik, Ondrej Slaby
Long non-coding RNA TUG1 is involved in the development and progression of a variety of tumors. Little is known about TUG1 function in high-grade muscle-invasive bladder cancer (MIBC). The aims of our study were to determine expression levels of long non-coding RNA TUG1 in tumor tissue, to evaluate its relationship with clinico-pathological features of high-grade MIBC, and to describe its function in MIBC cells in vitro. TUG1 expression levels were determined in paired tumor and adjacent non-tumor bladder tissues of 47 patients with high-grade MIBC using real-time PCR...
July 27, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Liang Wang, Zhenxian Zhao, Weidong Feng, Zhijun Ye, Weigang Dai, Changhua Zhang, Jianjun Peng, Kaiming Wu
Colorectal cancer (CRC) is the third most common malignancy in developed countries, and its incidence rate has been continuously increasing in developing countries over the past few decades. Taurine-upregulated gene 1 (TUG1) plays an important role in signal transduction, regulation of cell morphology, migration, proliferation and apoptosis. The aim of the present study was to evaluate the role of TUG1 in CRC, and whether knockdown of TUG1 expression could affect cell proliferation, migration and invasion of CRC cell lines...
July 13, 2016: Oncotarget
Jun Li, Gang An, Meng Zhang, Qingfang Ma
BACKGROUND: Long non-coding RNA taurine upregulated gene 1 (TUG1) acts as an important regulator in cancer pathogenesis; however, its functional mechanism in glioma development remains unclear. This study aims to explore the potential function of TUG1 in glioma by sponging miR-26a. METHODS: The expression of TUG1, miR-26a, and phosphatase and tensin homolog (PTEN) in 20 paired glioma tissues was detected by quantitative real-time PCR and subjected to correlation analysis...
September 2, 2016: Biochemical and Biophysical Research Communications
R Dong, G-B Liu, B-H Liu, G Chen, K Li, S Zheng, K-R Dong
Hepatoblastoma is the most common liver tumor of early childhood, which is usually characterized by unusual hypervascularity. Recently, long non-coding RNAs (lncRNA) have emerged as gene regulators and prognostic markers in several cancers, including hepatoblastoma. We previously reveal that lnRNA-TUG1 is upregulated in hepatoblastoma specimens by microarray analysis. In this study, we aim to elucidate the biological and clinical significance of TUG1 upregulation in hepatoblastoma. We show that TUG1 is significantly upregulated in human hepatoblastoma specimens and metastatic hepatoblastoma cell lines...
2016: Cell Death & Disease
H Cai, X Liu, J Zheng, Y Xue, J Ma, Z Li, Z Xi, Z Li, M Bao, Y Liu
Angiogenesis is one of the critical biological elements affecting the development and progression of cancer. Long non-coding RNAs (lncRNAs) are important regulators and aberrantly expressed in various types of human cancer. Our previous studies indicated that lncRNA taurine upregulated 1 (TUG1) implicated in the regulation of blood-tumor barrier permeability; however, its role in glioblastoma angiogenesis still unclear. Here we demonstrated that TUG1 was up-expressed in human glioblastoma tissues and glioblastoma cell lines...
June 27, 2016: Oncogene
Zheng Li, Jianxiong Shen, Matthew T V Chan, William Ka Kei Wu
Long non-coding RNAs (lncRNAs) are a group greater than 200 nucleotides in length. An increasing number of studies has shown that lncRNAs play important roles in diverse cellular processes, including proliferation, differentiation, apoptosis, invasion and chromatin remodelling. In this regard, deregulation of lncRNAs has been documented in human cancers. TUG1 is a recently identified oncogenic lncRNA whose aberrant upregulation has been detected in different types of cancer, including B-cell malignancies, oesophageal squamous cell carcinoma, bladder cancer, hepatocellular carcinoma and osteosarcoma...
August 2016: Cell Proliferation
Lin Jiang, Wenchao Wang, Guoli Li, Canlin Sun, Zhenqin Ren, Haihui Sheng, Hengjun Gao, Chaofu Wang, Hong Yu
PURPOSE: Long noncoding RNAs (lncRNAs) play critical roles in diverse biological processes such as tumorigenesis and metastasis. Taurine upregulated gene 1 (TUG1) is a cancer-related lncRNA that is associated with chromatin-modifying complexes and plays an important role in gene regulation. In this study, we determined the expression patterns of TUG1 in esophageal squamous cell carcinoma (ESCC) and evaluated its clinical significance. METHODS: The expression level of TUG1 was examined in 218 pairs of ESCC and adjacent non-cancerous tissues by using quantitative real-time polymerase chain reaction...
August 2016: Cancer Chemotherapy and Pharmacology
Meng Zhang, Wei Lu, Yiqiang Huang, Jizhou Shi, Xun Wu, Xiaolong Zhang, Runze Jiang, Zhiming Cai, Song Wu
Long non-coding RNAs, a newly discovered category of noncoding genes, play a leading role in various biological processes, including tumorigenesis. In our study, we aimed to examine the TUG1 expression, and explore the influence of TUG1 silencing on cell proliferation and apoptosis in renal cell carcinoma (RCC) cell lines. The TUG1 expression level was detected using quantitative real-time PCR reverse transcription-polymerase chain reaction in 40 paired clear cell renal cell carcinoma (ccRCC) and adjacent paired normal tissues, as well as four RCC cell lines and one normal human proximal tubule epithelial cell line HK-2...
August 2016: Journal of Molecular Histology
Ting-Ting Ji, Xuan Huang, Jie Jin, Sheng-Hua Pan, Xiao-Ju Zhuge
OBJECTIVE: To discuss the expression of long noncoding RNA TUG1 (lncRNA-TUG1) in gastric carcinoma (GC) and its effects on the transferring and invading capacity of gastric carcinoma cells. METHODS: Forty cases of carcinoma tissue and para-carcinoma tissue were selected from GC patients who underwent surgical removal in Zhejiang Provincial Hospital of Chinese Traditional Medicine and Wenzhou Central Hospital from January, 2013 to December, 2014; the expressing level of lncRNA-TUG1 in GC and para-C tissues was detected by applying the qRT-PCR technique...
May 2016: Asian Pacific Journal of Tropical Medicine
Massimo Santoro, Viviana Nociti, Matteo Lucchini, Chiara De Fino, Francesco Antonio Losavio, Massimiliano Mirabella
Multiple sclerosis (MS) is a chronic progressive inflammatory disease of the central nervous system (CNS) that leads to severe neurological disability. There is an interest in potential biomarkers that could provide information predicting disease activity and progression. Long non-coding RNAs (lncRNAs) have been reported to be involved in the pathogenesis of various human disorders, such as oncologic, cardiovascular, and neurodegenerative diseases. No studies have so far explored a potential link between lncRNAs and MS pathology...
May 2016: Journal of Molecular Neuroscience: MN
Zhou Du, Tong Sun, Ezgi Hacisuleyman, Teng Fei, Xiaodong Wang, Myles Brown, John L Rinn, Mary Gwo-Shu Lee, Yiwen Chen, Philip W Kantoff, X Shirley Liu
Mounting evidence suggests that long noncoding RNAs (lncRNAs) can function as microRNA sponges and compete for microRNA binding to protein-coding transcripts. However, the prevalence, functional significance and targets of lncRNA-mediated sponge regulation of cancer are mostly unknown. Here we identify a lncRNA-mediated sponge regulatory network that affects the expression of many protein-coding prostate cancer driver genes, by integrating analysis of sequence features and gene expression profiles of both lncRNAs and protein-coding genes in tumours...
2016: Nature Communications
E Zhang, X He, D Yin, L Han, M Qiu, T Xu, R Xia, L Xu, R Yin, W De
Recent evidence highlights long noncoding RNAs (lncRNAs) as crucial regulators of cancer biology that contribute to tumorigenesis. LncRNA TUG1 was initially detected in a genomic screen for genes upregulated in response to taurine treatment in developing mouse retinal cells. Our previous study showed that TUG1 could affect cell proliferation through epigenetically regulating HOXB7 in human non-small cell lung cancer. However, the clinical significance and potential role of TUG1 in GC remains unclear. In this study, we found that TUG1 is significantly increased and is correlated with outcomes in gastric cancer (GC)...
2016: Cell Death & Disease
Junfeng Sun, Chaohui Ding, Zhen Yang, Tao Liu, Xiefu Zhang, Chunlin Zhao, Jiaxiang Wang
BACKGROUND: Long intergenic non-coding RNAs (lncRNAs) are a class of non-coding RNAs that are involved in gene expression regulation. Taurine up-regulated gene 1 (TUG1) is a cancer progression related lncRNA in some tumor oncogenesis; however, its role in colorectal cancer (CRC) remains unclear. In this study, we determined the expression patterns of TUG1 in CRC patients and explored its effect on CRC cell metastasis using cultured representative CRC cell lines. METHODS: The expression levels of TUG1 in 120 CRC patients and CRC cells were determined using quantitative real-time PCR...
2016: Journal of Translational Medicine
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