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Tong-Hong Wang, Chieh-Wen Chan, Jia-You Fang, Ya-Min Shih, Yi-Wen Liu, Tzu-Chien V Wang, Chi-Yuan Chen
Magnolol, a hydroxylated biphenol compound isolated from the bark of Magnolia officinalis, has been shown to exhibit anti-proliferative effect in various cancer cells, including skin cancer cells. Methoxylation of magnolol appears to improve its anti-inflammatory activity, yet the effect of this modification on the agent's antitumor activity remains unknown. In this work, we report that 2-O-methylmagnolol (MM1) displays improved antitumor activity against skin cancer cells compared to magnolol both in vitro and in vivo...
March 2, 2017: Cell Death & Disease
Min Qi, Qiuhong Zhou, Weiqi Zeng, Minxue Shen, Xiaomin Liu, Chang Luo, Jing Long, Wangqing Chen, Jianglin Zhang, Siyu Yan
BACKGROUND: Recent evidence has indicated that long non-coding RNA (lncRNA) is involved in the pathogenesis of type 2 diabetes, but nothing is known about lncRNA expression changes of lymphatic endothelial cells in response to type 2 diabetes. METHODS: The GSE38396 dataset was downloaded from the Gene Expression Omnibus database and the probe sets of Human Gnome U133 Plus2.0 microarray were annotated for lncRNA. Differentially expressed lncRNAs between diabetic and non-diabetic lymphatic endothelial cells were calculated...
January 27, 2017: Cellular Physiology and Biochemistry
Yingbo Xue, Tingting Ni, Ying Jiang, Yong Li
GAS5 has been demonstrated to be correlated with clinicopathological characteristics and serve as a tumor suppressor innon small cell lung cancer (NSCLC). However, the underlying mechanism of competing endogenous RNA (ceRNA) regulatory network involving GAS5 in NSCLC remains to be elucidated. In this study, qRT-PCR results showed that GAS5 was down-regulated and miR-135b was up-regulated in NSCLC tissues and cells. The expressions of GAS5 and miR-135b changed inversely in response to irradiation. Gain of function experiments revealed that GAS5 overexpresion and miR-135b downregulation significantly suppressed tumorigenesis by repressing cell proliferation, invasion and enhanced radiosensitivity of NSCLC cells by reducing colony formation rates...
January 23, 2017: Oncology Research
Yuan Li, Yan Li, Shengkai Huang, Kun He, Mei Zhao, Hong Lin, Dongdong Li, Jiaming Qian, Caihong Zhou, Yuhua Chen, Changzhi Huang
Long non-coding RNAs (lncRNAs) are highly involved in diverse biological processes of human malignancies. The expression profile and underlying mechanism of lncRNA growth arrest specific transcript 5 (GAS5) in colorectal cancer (CRC) is poorly understood. In this study, we found that GAS5 was commonly downregulated in CRC tissues, serum of CRC patients and CRC cell lines. Knockdown of GAS5 promoted CRC cell proliferation and colony formation, whereas overexpression of GAS5 produced the opposite result. We further demonstrated that knockdown of GAS5 increased the expression and secretion of interleukin-10 (IL-10) and vascular endothelial growth factor (VEGF-A) via NF-κB and Erk1/2 pathways...
January 13, 2017: Oncotarget
Yongcheng Mei, Jinchun Si, Yun Wang, Zhuangshi Huang, Haiwen Zhu, Shijun Feng, Xuezhi Wu, Liwen Wu
Previous studies reported that elevated expression of long noncoding RNA GAS5 led to NSCLC cell growth arrest and a promotion of apoptosis both <em>in vitro</em> and <em>in vivo</em>. However, its underlying molecular mechanism in NSCLC is still unclear. In the present study, we noted that GAS5 was down-regulated in NSCLC tissues and cells and was negatively correlated with miR-23a expression. Luciferase reporter assay and qRT-PCR analysis demonstrated that GAS5 directly interacted with miR-23a and reversely regulate its expression...
January 5, 2017: Oncology Research
Joseph Mazar, Amy Rosado, John Shelley, John Marchica, Tamarah J Westmoreland
The long non-coding RNA GAS5 has been shown to modulate cancer proliferation in numerous human cancer systems and has been correlated with successful patient outcome. Our examination of GAS5 in neuroblastoma has revealed robust expression in both MYCN-amplified and non-amplified cell lines. Knockdown of GAS5 In vitro resulted in defects in cell proliferation, apoptosis, and induced cell cycle arrest. Further analysis of GAS5 clones revealed multiple novel splice variants, two of which inversely modulated with MYCN status...
January 24, 2017: Oncotarget
Han Yan, Dao-Yu Zhang, Xi Li, Xiao-Qing Yuan, Yong-Long Yang, Ke-Wei Zhu, Hui Zeng, Xiao-Lin Li, Shan Cao, Hong-Hao Zhou, Wei Zhang, Xiao-Ping Chen
Whether long non-coding RNA (lncRNA) single-nucleotide polymorphisms (SNPs) affect prognosis of acute myeloid leukemia (AML) remains unknown. To search the association between lncRNA SNPs and AML outcomes, thirty tagSNPs in five lncRNAs were genotyped in 313 AML patients. Survival analysis indicated that GAS5 rs55829688 (T > C) was significantly associated with prognosis of AML (p = 0.018). Patients with rs55829688 CC genotype showed higher GAS5 expression in peripheral blood mononuclear cells (PBMCs) (p = 0...
August 2017: Leukemia & Lymphoma
Hui Zhang, Yan Guo, Yongsheng Song, Chao Shang
PURPOSE: Bladder cancer is the most general malignant cancer in genitourinary system, more than 90% of BCs are bladder transitional cell carcinomas (BTCC). This study aimed to investigate the clinical significance of growth arrest-specific 5 (GAS5) gene and its regulatory effects of malignant proliferation and chemotherapy resistance to doxorubicin in BTCC cells. METHODS: The expression of GAS5 was detected by quantitative real-time PCR. Statistical analysis was used to determine the relationship between GAS5 expression and clinical features and the prognostic value of GAS5 for disease free survival...
November 22, 2016: Cancer Chemotherapy and Pharmacology
Yongbin Zheng, Dan Song, Kuang Xiao, Cao Yang, Yu Ding, Wenhong Deng, Shilun Tong
Colorectal cancer (CRC) ranks the third most common type of cancer worldwide. However, the detailed molecular mechanisms underlying these processes are poorly understood. Recent studies have shown that lncRNAs play important roles in carcinogenesis and progression of CRC. The lncRNA growth arrest special 5 (GAS5), was previously identified to be down-regulated and functions as a tumor suppressor gene in many kinds of cancers. In current two-stage, case-control study, we systematically evaluated the potential role of lncRNA GAS5 and its genetic variation rs145204276 in the development and metastasis process of CRC in a Chinese population...
November 16, 2016: Oncotarget
Xiao Liu, Tongli Jiao, Yinzhong Wang, Weiqiang Su, Zhaopeng Tang, Chaoyang Han
BACKGROUND: Long non-coding RNA (lncRNAs) play critical roles in the development of cancers. LncRNA GAS5 was identified to be involved in tumorigenesis of several cancers. However, its role and function in gastric cancer (GC) remains unknown. METHODS: The expression of GAS5, miR-23a and MT2A in 24 paired GC tissues was detected by qRT-PCR and subjected to correlation analysis. Bio-informatics analysis was performed by using DIANA Tools. Abnormal GAS5 expression was conducted in GC cells to analyze its regulation on miR-23a and MT2A via using qRT-PCR, western blot and luciferase reporter assay...
November 9, 2016: Minerva Medica
You-You Yan, Zhi-Hui Wang, Lei Zhao, Dan-Dan Song, Chao Qi, Lu-Lu Liu, Jun-Nan Wang
BACKGROUND: β-adrenoceptors play a crucial regulatory role in blood vessel endothelial cells. Isoprenaline (ISO, a β-adrenergic agonist) has been reported to promote angiogenesis through upregulation of vascular endothelial growth factor (VEGF) expression; however, the underlying mechanism remains to be investigated. It is widely accepted that certain noncoding RNAs, including microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), can regulate endothelial cell behavior, including their involvement in angiogenesis...
2016: Chinese Medical Journal
Chen Xu, Yan Zhang, Qiaoling Wang, Zhenyu Xu, Junfeng Jiang, Yuping Gao, Minzhi Gao, Jiuhong Kang, Minjuan Wu, Jun Xiong, Kaihong Ji, Wen Yuan, Yue Wang, Houqi Liu
Long non-coding RNAs (lncRNAs) are known players in the regulatory circuitry of the self-renewal in human embryonic stem cells (hESCs). However, most hESC-specific lncRNAs remain uncharacterized. Here we demonstrate that growth-arrest-specific transcript 5 (GAS5), a known tumour suppressor and growth arrest-related lncRNA, is highly expressed and directly regulated by pluripotency factors OCT4 and SOX2 in hESCs. Phenotypic analysis shows that GAS5 knockdown significantly impairs hESC self-renewal, but its overexpression significantly promotes hESC self-renewal...
November 4, 2016: Nature Communications
Jie Li, He Huang, Yingguang Li, Li Li, Wenhui Hou, Zeshan You
Long non-coding RNA growth arrest-specific 5 (GAS5) was reported to be aberrantly expressed in various types of cancers. However, the role of GAS5 in the evolution and progression of ovarian cancer remains elusive. In the present study, we aimed to investigate the cellular function and clinical significance of GAS5 in ovarian cancer. GAS5 expression levels in 63 ovarian cancer tissues were detected by quantitative real-time PCR. Cell Counting Kit-8 (CCK-8) assay was performed to analyze the effect of GAS5 on cell proliferation...
December 2016: Oncology Reports
Dong Xue, Cuixing Zhou, Hao Lu, Renfang Xu, Xianlin Xu, Xiaozhou He
In prior research, evidence has been found for a relation between low exposure of long non-coding RNAs (lncRNAs) and prostate tumor genesis. This study aims to clarify the underlying mechanisms of lncRNA GAS5 in prostate cancer (PCa). In total, 118 pairs of PCa tissues and matched adjacent non-tumor tissues were collected. Additionally, lncRNA GAS5 exposure levels were determined using RT-PCR and in situ hybridization. In addition, dual-luciferase report assay was performed to verify the target effect of lncRNA GAS5 on miR-103...
October 14, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Wenjun Liang, Tangfeng Lv, Xuefei Shi, Hongbing Liu, Qingqing Zhu, Junli Zeng, Wen Yang, Jie Yin, Yong Song
The recently discovered long noncoding RNAs have the potential to regulate many biological processes, which are aberrantly expressed in many tumor types. Our previous study showed that the long noncoding RNA-growth arrest-specific transcript 5 (GAS5) was decreased in lung cancer tissue, which contributed to the proliferation and apoptosis of nonsmall cell lung cancer (NSCLC). GAS5 was also associated with the prognosis of lung cancer patients. These results suggest that GAS5 may represent a novel prognostic indicator and a target for gene therapy in NSCLC...
September 2016: Medicine (Baltimore)
Oskar Karlsson, Rodosthenis S Rodosthenous, Calvin Jara, Kasey J Brennan, Robert O Wright, Andrea A Baccarelli, Rosalind J Wright
Breastmilk has many documented beneficial effects on the developing human infant, but the components of breastmilk that influence these developmental pathways have not been fully elucidated. Increasing evidence suggests that non-coding RNAs encapsulated in extracellular vesicles (EVs) represent an important mechanism of communication between the mother and child. Long non-coding RNAs (lncRNAs) are of particular interest given their key role in gene expression and development. However, it is not known whether breastmilk EVs contain lncRNAs...
August 5, 2016: Epigenetics: Official Journal of the DNA Methylation Society
Ying Wu, Hui Lyu, Hongbing Liu, Xuefei Shi, Yong Song, Bolin Liu
Long noncoding RNA (lncRNA) plays pivotal roles in cancer development. To date, only a small number of lncRNAs have been characterized at functional level. Here, we discovered a novel lncRNA termed GAS5-AS1 as a tumor suppressor in non-small cell lung cancer (NSCLC). The expression of GAS5-AS1 in NSCLC tumors was much lower than that in the adjacent normal lung tissues. The reduced GAS5-AS1 was significantly correlated with larger tumors, higher TNM stages, and lymph node metastasis in NSCLC patients. While ectopic expression or specific knockdown of GAS5-AS1 had no effect on proliferation, cell cycle progression, and apoptosis, it dramatically decreased or increased, respectively, NSCLC cell migration and invasion...
2016: Scientific Reports
N Zhang, A-Y Wang, X-K Wang, X-M Sun, H-Z Xue
OBJECTIVE: GAS5 is a tumor suppressive lncRNA that is downregulated in gastric cancer. In this study, we firstly investigated whether epigenetic regulation contributed to GAS5 downregulation and further investigated the role of GAS5 in Adriamycin (ADM) sensitivity in gastric cancer cells. MATERIALS AND METHODS: GAS5 expression in 15 paired gastric cancer tissues and adjacent normal tissues and in gastric cancer cells were detected using qRT-PCR. Methylation-Specific PCR (MSP) was performed with the use of 5-AZA-dC to detect the methylation status of GAS5 promoter...
July 2016: European Review for Medical and Pharmacological Sciences
Long Chen, Huixin Yang, Yanbin Xiao, Xiaoxia Tang, Yuqian Li, Qiaoqiao Han, Junping Fu, Yuye Yang, Yuechun Zhu
The present study intended to demonstrate the effects of long noncoding RNA growth arrest-specific transcript 5 (GAS5) on the migration and invasion of melanoma cells. We first detected the expression of GAS5 among four kinds of melanoma cell lines, followed by constructing GAS5-knocked down and overexpressed stable cells. Next, we evaluated the effects of GAS5 on cell migration and invasion using wound healing and gelatin zymography assays. Finally, melanoma cells with different GAS5 expression were injected into nude mice, and the tumor volumes were recorded and tumor tissues were analyzed after sacrificing the mice...
2016: OncoTargets and Therapy
Yang-Ning-Zhi Wang, Kun Shan, Mu-Di Yao, Jin Yao, Jia-Jian Wang, Xiang Li, Ban Liu, Yang-Yang Zhang, Yong Ji, Qin Jiang, Biao Yan
Vascular remodeling is an important pathological feature of hypertension, leading to increased vascular resistance and reduced compliance. Endothelial cell (EC) and vascular smooth muscle cell (VSMC) dysfunction is involved in vascular remodeling. Long noncoding RNAs are potential regulators of EC and VSMC function. Herein, we determined whether long noncoding RNA-growth arrest-specific 5 (GAS5) is involved in hypertension-related vascular remodeling. We revealed that GAS5 knockdown aggravated hypertension-induced microvascular dysfunction as shown by increased retinal neovascularization and capillary leakage...
September 2016: Hypertension
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