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https://www.readbyqxmd.com/read/28808113/lncrna-gas5-inhibits-microglial-m2-polarization-and-exacerbates-demyelination
#1
Dingya Sun, Zhongwang Yu, Xue Fang, Mingdong Liu, Yingyan Pu, Qi Shao, Dan Wang, Xiaolin Zhao, Aijun Huang, Zhenghua Xiang, Chao Zhao, Robin Jm Franklin, Li Cao, Cheng He
The regulation of inflammation is pivotal for preventing the development or reoccurrence of multiple sclerosis (MS). A biased ratio of high-M1 versus low-M2 polarized microglia is a major pathological feature of MS Here, using microarray screening, we identify the long noncoding RNA (lncRNA) GAS5 as an epigenetic regulator of microglial polarization. Gain- and loss-of-function studies reveal that GAS5 suppresses microglial M2 polarization. Interference with GAS5 in transplanted microglia attenuates the progression of experimental autoimmune encephalomyelitis (EAE) and promotes remyelination in a lysolecithin-induced demyelination model...
August 14, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28771526/an-androgen-reduced-transcript-of-lncrna-gas5-promoted-prostate-cancer-proliferation
#2
Yingyi Zhang, Xinya Su, Zhe Kong, Fangqiu Fu, Pu Zhang, Dan Wang, Hai Wu, Xuechao Wan, Yao Li
Prostate cancer (PCa) becomes a leading cause of death in males nowadays. Recent reports showed that androgen-responsive long non-coding RNAs played important roles in tumorigenesis and progression of PCa. In this study, we focused on a special transcript of GAS5 (ENST00000456293.5, GAS5-007), which was reported as a tumor suppressor. Here, we demonstrated GAS5-007 was reduced by androgen treatment and inhibited by AR. Next, we explored the expression level of GAS, finding the expression of it in PCa tissue was higher than normal tissue in both public databases and human tissue samples...
2017: PloS One
https://www.readbyqxmd.com/read/28722800/role-of-the-long-non-coding-rna-gas5-in-glucocorticoid-response-in-children-with-inflammatory-bowel-disease
#3
Marianna Lucafò, Alessia Di Silvestre, Maurizio Romano, Alice Avian, Roberta Antonelli, Stefano Martelossi, Samuele Naviglio, Alberto Tommasini, Gabriele Stocco, Alessandro Ventura, M D Giuliana Decorti, Sara De Iudicibus
Glucocorticoids (GCs) are widely employed in inflammatory, autoimmune and neoplastic diseases, and, despite the introduction of novel therapies, remain the first-line treatment for inducing remission in inflammatory bowel disease (IBD). Given the high incidence of suboptimal response, associated with a significant number of side effects, that are particularly severe in paediatric patients, the identification of subjects that are most likely to respond poorly to GCs is extremely important. Recent evidence suggests that the long non-coding RNA (lncRNA) GAS5 could be a potential marker of GC resistance...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28722663/systematic-review-and-meta-analysis-of-the-utility-of-long-non-coding-rna-gas5-as-a-diagnostic-and-prognostic-cancer-biomarker
#4
Wei Li, Na Li, Ke Shi, Qiong Chen
The growth arrest-specific 5 transcript (GAS5) is a long non-coding RNA (lncRNA) involved in the control of cell cycle progression and apoptosis in a wide variety of cells. To determine the clinical value of GAS5 expression in cancer patients, we performed a systematic review and meta-analysis exploring its association with the diagnosis, prognosis, and clinicopathological characteristics of cancer. Ten articles on prognosis, 15 on clinicopathology, and 5 on diagnosis were analyzed. Overall results showed that decreased GAS5 expression associated with unfavorable overall survival (OS) (HR = 2...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28719640/short-lived-long-non-coding-rnas-as-surrogate-indicators-for-chemical-exposure-and-linc00152-and-malat1-modulate-their-neighboring-genes
#5
Hidenori Tani, Sayaka Okuda, Kaoru Nakamura, Motohide Aoki, Tomonari Umemura
Whole transcriptome analyses have revealed a large number of novel long non-coding RNAs (lncRNAs). Although accumulating evidence demonstrates that lncRNAs play important roles in regulating gene expression, the detailed mechanisms of action of most lncRNAs remain unclear. We previously reported that a novel class of lncRNAs with a short half-life (t1/2 < 4 h) in HeLa cells, termed short-lived non-coding transcripts (SLiTs), are closely associated with physiological and pathological functions. In this study, we focused on 26 SLiTs and nuclear-enriched abundant lncRNA, MALAT1(t1/2 of 7...
2017: PloS One
https://www.readbyqxmd.com/read/28686971/gas5-knockdown-reduces-the-chemo-sensitivity-of-non-small-cell-lung-cancer-nsclc-cell-to-cisplatin-ddp-through-regulating-mir-21-pten-axis
#6
Lin Cao, Jia Chen, Baiqing Ou, Cuizhong Liu, Yan Zou, Qiong Chen
Non-small cell lung cancer (NSCLC), known as the most common type of lung cancer, has caused great economic losses and brought the patients with NSCLC great suffering. The NSCLC chemo-resistance to cisplatin (DDP) -based chemotherapy remains a huge challenge. The lncRNA growth arrest-specific 5 (GAS5) has been reported to be related with cancers including NSCLC. Phosphatase and tensin homolog (PTEN) has been frequently reported to affect chemo-sensitivity of cancers, and usually acts as a tumor suppressor. In this paper, we demonstrated a significant low GAS5expression in NSCLC patients was correlated with poorer clinicopathologic features; GAS5 knockdown by si-GAS5 transfection promoted NSCLC cell viability...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28671039/lncrna-gas5-suppresses-the-tumorigenesis-of-cervical-cancer-by-downregulating-mir-196a-and-mir-205
#7
Wenwu Yang, Li Hong, Xuexian Xu, Qin Wang, Jinling Huang, Li Jiang
Growth arrest special 5 (GAS5) is a long non-coding RNA reported to function as an inhibitor in various tumors including cervical cancer. However, the molecular mechanism of GAS5 involved in cervical cancer progression remains far from being elucidated. The expression of GAS5, forkhead box protein O1 and phosphatase and tensin homolog was examined by quantitative reverse transcription polymerase chain reaction qRT-PCR. cell growth, invasion, and apoptosis were assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, colony formation assay, transwell invasion assay, and flow cytometry analysis, respectively...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28666797/gas5-suppresses-malignancy-of-human-glioma-stem-cells-via-a-mir-196a-5p-foxo1-feedback-loop
#8
Xihe Zhao, Yunhui Liu, Jian Zheng, Xiaobai Liu, Jiajia Chen, Libo Liu, Ping Wang, Yixue Xue
Glioma stem cells (GSCs) make up highly tumorigenic subpopulations within gliomas, and aberrant expression of GSC genes is a major underlying cause of glioma pathogenesis and treatment failure. The present study characterized the expression and function of long non-coding RNA growth arrest specific 5 (GAS5) in GSCs in order to elucidate the molecular mechanisms by which GAS5 contributes to glioma pathogenesis. We demonstrate that GAS5 suppresses GSC malignancy by binding to miR-196a-5p. miR-196a-5p, an onco-miRNA, stimulates GSC proliferation, migration, and invasion, in addition to reducing levels of apoptosis...
June 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28659340/the-long-non-coding-rna-gas5-regulates-tgf-%C3%AE-induced-smooth-muscle-cell-differentiation-via-rna-smad-binding-element
#9
Rui Tang, Gui Zhang, Yung-Chun Wang, Xiaohan Mei, Shi-You Chen
Smooth muscle cell (SMC) differentiation is essential for vascular development, and TGF-β signaling plays a critical role in this process. Although long non-coding RNAs (lncRNAs) regulate various cellular events, their functions in SMC differentiation remain largely unknown. Here, we demonstrate that the lncRNA growth arrest specific 5 (GAS5) suppresses TGF-β/Smad3 signaling in smooth muscle cell differentiation of mesenchymal progenitor cells. We found that forced expression of GAS5 blocked, while knockdown of GAS5 increased, the expression of SMC contractile proteins...
June 28, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28619521/overview-of-long-non-coding-rna-and-mrna-expression-in-response-to-methamphetamine-treatment-in-vitro
#10
Kun Xiong, Lingling Long, Xudong Zhang, Hongke Qu, Haixiao Deng, Yanjun Ding, Jifeng Cai, Shuchao Wang, Mi Wang, Lvshuang Liao, Jufang Huang, Chun-Xia Yi, Jie Yan
Long non-coding RNAs (lncRNAs) display multiple functions including regulation of neuronal injury. However, their impact in methamphetamine (METH)-induced neurotoxicity has rarely been reported. Here, using microarray analysis, we investigated the expression profiling of lncRNAs and mRNAs in primary cultured prefrontal cortical neurons after METH treatment. We observed a difference in lncRNA and mRNA expression between the experimental and sham control groups. Using bioinformatics, we analyzed the highest enriched gene ontology (GO) terms of biological process, cellular component, and molecular function, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway and pathway network analysis...
June 12, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28596501/identification-and-validation-long-non-coding-rnas-of-oral-squamous-cell-carcinoma-by-bioinformatics-method
#11
Meng Yang, Xingliang Xiong, Longcong Chen, Li Yang, Xian Li
Gene markers of oral squamous cell carcinoma (OSCC) have great significance on early diagnosis and treatment of clinical oral cancer. In this study, we used RNA-Seq data from OSCC patients and filtered differentially-expressed long non-coding RNA (lncRNA) to further clarify the molecular mechanism. Firstly, we downloaded datasets of OSCC from National Center for Biotechnology Information(NCBI), which were predicted and analyzed by cufflinks and tophat. Then, differentially expressed lncRNA enrichment was performed with The Database for Annotation, Visualization and Integrated Discovery (DAVID)...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28580301/adipose-stem-cells-from-obese-patients-show-specific-differences-in-the-metabolic-regulators-vitamin-d-and-gas5
#12
Laura M Pérez, Beatriz de Lucas, Victoria V Lunyak, Beatriz G Gálvez
Adipose tissue is a significant source of mesenchymal stem cells for regenerative therapies; however, caution should be taken as their environmental niche can affect their functional properties. We have previously demonstrated the negative impact of obesity on the function of adipose-derived stem cells (ASCs). Here we have evaluated other possible properties and targets that are altered by obesity such as the recently described long non-coding molecule Gas5, which is involved in glucocorticoid resistance. Using ASCs isolated from obese (oASCs) and control subjects (cASCs), we have analyzed additional metabolic and inflammatory conditions that could be related with their impaired therapeutic potential and consequently their possible usefulness in the clinic...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28530127/an-oncolytic-adenovirus-expressing-snord44-and-gas5-exhibits-antitumor-effect-in-colorectal-cancer-cells
#13
Sujing Yuan, Yu Wu, Yigang Wang, Jianhua Chen, Liang Chu
SNORD44 is a C/D box small nucleolar RNA, and exhibits low expression in breast cancer and head and neck squamous cell carcinoma tissues. Its host gene is growth arrest specific transcript 5 (GAS5), which is a long noncoding RNA. GAS5 is downregulated in colorectal cancer (CRC), and overexpression of GAS5 suppresses cell proliferation. However, the function of SNORD44 in CRC remains largely unknown, and the application of SNORD44 combined with GAS5 in CRC treatment has not been reported. In this study, the expression levels of SNORD44 and GAS5 were measured in CRC tissues by quantitative RT-PCR...
August 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28526319/lncrna-gas5-controls-cardiac-fibroblast-activation-and-fibrosis-by-targeting-mir-21-via-pten-mmp-2-signaling-pathway
#14
Hui Tao, Jia-Gui Zhang, Run-He Qin, Chen Dai, Peng Shi, Jing-Jing Yang, Zi-Yu Deng, Kai-Hu Shi
Long noncoding RNAs (LncRNAs) are aberrantly expressed in many diseases including cardiac fibrosis. LncRNA growth arrest-specific 5 (GAS5) is reported as a significant mediator in the control of cell proliferation and growth; however, the role and function in cardiac fibrosis remain unknown. In this study, we confirmed that GAS5 was lowly expressed in cardiac fibrosis tissues as well as activated cardiac fibroblast. Overexpression of GAS5 inhibited the proliferation of cardiac fibroblast. Moreover, microRNA-21 (miR-21) has been reported to be overexpressed in cardiac fibrosis tissues as well as activated cardiac fibroblast, which is responsible for the progression of cardiac fibrosis...
May 17, 2017: Toxicology
https://www.readbyqxmd.com/read/28521420/long-non-coding-rna-gas5-inhibits-cell-proliferation-induces-g0-g1-arrest-and-apoptosis-and-functions-as-a-prognostic-marker-in-colorectal-cancer
#15
Yang Yang, Zhanlong Shen, Yichao Yan, Bo Wang, Jizhun Zhang, Chao Shen, Tao Li, Chunxiang Ye, Zhidong Gao, Guo Peng, Yingjiang Ye, Kewei Jiang, Shan Wang
Colorectal cancer (CRC) is the third most common cancer worldwide and its treatment remains a challenge. Effective control of cell survival and proliferation is critical in the prevention of oncogenesis and successful treatment of cancer. Long non-coding RNAs (lncRNAs) have emerged as primary regulators of carcinogenesis. Growth arrest specific 5 (GAS5), a lncRNA, is known to be aberrantly expressed in several types of cancer, however, the role of GAS5 in CRC remains unclear. In the present study, GAS5 mRNA expression was measured in CRC and adjacent normal mucosa tissue samples from 53 patients using reverse transcription-quantitative polymerase chain reaction analysis, in addition to seven CRC cell lines...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28519068/long-noncoding-rna-gas5-suppresses-cell-growth-and-epithelial-mesenchymal-transition-in-osteosarcoma-by-regulating-the-mir-221-arhi-pathway
#16
Kaishan Ye, Shuanke Wang, Haihong Zhang, Hua Han, Bing Ma, Wei Nan
Dysregulated long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) play key roles in the development of human cancers. The lncRNA growth arrest-specific 5 (GAS5) is reported to be a tumor suppressor in multiple cancers. However, the roles of GAS5 and its related miRNAs in osteosarcoma are poorly understood. This study explored the potential functions and mechanisms of GAS5 in the tumorigenesis of osteosarcoma. Here, the expression of GAS5, miR-221 and aplasia Ras homologue member I (ARHI) was determined in osteosarcoma tissues and cells by Real-time PCR (RT-qPCR)...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28506768/low-expression-of-long-non-coding-rna-gas5-is-associated-with-poor-prognosis-of-patients-with-thyroid-cancer
#17
Ling-Ji Guo, Shu Zhang, Bo Gao, Yan Jiang, Xiao-Hua Zhang, Wu-Guo Tian, Shuai Hao, Jian-Jie Zhao, Gang Zhang, Chun-Yan Hu, Jie Yan, Dong-Lin Luo
The study aims to investigate the role of long non-coding RNA (lncRNA) GAS5 in the diagnosis and prognosis of patients suffering from thyroid cancer (TC). A total of 212 patients with TC and 61 patients with benign thyroid tumor were enrolled in the study. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to detect the lncRNA GAS5 expression in TC and benign tumor tissues. All TC patients were categorized into high-risk and low-risk groups according to the MACIS, AGES and AMES prognostic scoring system...
June 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28472815/long-noncoding-rna-gas5-which-acts-as-a-tumor-suppressor-via-microrna-21-regulates-cisplatin-resistance-expression-in-cervical-cancer
#18
Qirong Wen, Yan Liu, Huabing Lyu, Xiaying Xu, Qingxia Wu, Ni Liu, Qi Yin, Juan Li, Xiujie Sheng
OBJECTIVES: The aims of this study were to investigate the functions of GAS5 as a tumor suppressor in cervical cancer and explore the mechanism. METHODS: The expression of GAS5 and microRNA 21 (miR-21) was detected in primary cervical cancer tissue specimens, as well as in cervical cancer cell lines. We identified the interaction of GAS5 and miR-21 by quantitative polymerase chain reaction, Western blot, and dual-luciferase reporter assay. We also studied the functions of GAS5 in proliferation, apoptosis, migration, and invasion in cervical cancer cells in vitro and vivo...
July 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28451400/accumulation-of-gas5-in-exosomes-is-a-marker-of-apoptosis-induction
#19
Oguz Koldemir, Emre Özgür, Ugur Gezer
Long non-coding RNAs (lncRNAs) are key regulatory molecules in many fundamental cellular processes and their deregulation is assumed to contribute to carcinogenesis. Exosomal lncRNAs are thought to be involved in the dissemination of cell signals to control local cellular microenvironments. In the current study, exosomal expression of growth arrest specific 5 (GAS5), an inhibitor of cell proliferation and promoter of apoptosis, was evaluated in apoptotic processes initiated by different mechanisms. Therefore, MCF-7 and MDA-MB-231 breast cancer cells were treated with Taxol (2 and 10 nM) and bleomycin (2 and 10 ng/ml) for 24 h...
March 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28430799/diagnostic-and-prognostic-value-of-long-noncoding-rnas-as-biomarkers-in-urothelial-carcinoma
#20
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
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