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Yi Zhang, Kaijiong Zhang, Zhenglian Luo, Lian Liu, Lichun Wu, Jinbo Liu
BACKGROUND: It is well known that HOX transcript antisense intergenic ribonucleic acid (HOTAIR) plays an important role in breast cancer (BC). However, whether circulating HOTAIR in plasma could be used for BC diagnosis and dynamic monitoring are unclear. METHODS: We tested the expression levels of HOTAIR in 30 pairs of tissue samples and 148 plasma samples from BC patients by quantitative real time-polymerase chain reaction, and the correlation between plasma HOTAIR levels and clinical features were analyzed...
August 1, 2016: Thoracic Cancer
Ting Ma, Rui-Ping Wang, Xi Zou
BACKGROUND: As a member of non-coding RNAs family, long non-coding RNAs' functions in cancer needs to be further investigated. It has been indicated that the functions of Hox transcript antisense intergenic RNA (lncRNA: HOTAIR) include reprogramming chromatin organization and promoting tumor metastasis such as breast and colorectal tumor. The aim of this study is to investigate the functions of Hox in gastric cancer. METHODS: In the present study, the expression level of HOTAIR was determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR), 20 gastric cancer tissues and 20 normal tissues was included...
September 30, 2016: BMC Complementary and Alternative Medicine
Yuan-Yuan Zhang, Si-Han Huang, Hua-Rong Zhou, Cong-Jie Chen, Li-Hong Tian, Jian-Zhen Shen
HOX antisense intergenic RNA (HOTAIR), a long non-coding RNA, plays an important role in the development of many types of cancers. Its function in acute leukemia (AL), however, has not been examined. The present study investigated the role of HOTAIR and its downstream genes in AL, and determined whether it could act as a molecular marker for prediction of leukemia development and prognosis. Real-time quantitative PCR was used to examine the expression of each gene in the HOTAIR signaling pathway in AL patients...
October 4, 2016: Oncology Reports
Lixin Zhang, Hua Qian, Min Sha, Zhengyun Luan, Mei Lin, Donglan Yuan, Xiaokang Li, Junxing Huang, Lihua Ye
Artesunate (ART) has anti-cancer activities for a variety of solid tumors. The aim of this study was to investigate the anti-metastatic effect of ART on cervical cancer cells. In vivo anti-metastatic effect of ART was investigated in mice with the lung metastasis model by the subcutaneous injection of ART. The interaction of HOTAIR and COX-2 was measured by RNA immunoprecipitation and RNA pull-down assay. The effect of ART on metastasis of CaSki and Hela cells was evaluated by invasion and migration assay. We found that ART inhibited cervical cancer metastasis and HOTAIR expression...
2016: PloS One
Nailiang Zhai, Yongfu Xia, Rui Yin, Jinping Liu, Fuquan Gao
Non-small-cell lung cancer (NSCLC) is one of the leading causes of cancer-related death worldwide, and the 5-year survival rate is still low despite advances in diagnosis and therapeutics. A long noncoding RNA (lncRNA) HOX antisense intergenic RNA (HOTAIR) has been revealed to play important roles in NSCLC carcinogenesis but the detailed mechanisms are still unclear. In the current study, we aimed to investigate the regulation between the lncRNA HOTAIR and p53 in the NSCLC patient samples and cell lines. Our results showed that HOTAIR expression was significantly higher in the cancer tissues than that in the adjacent normal tissue, and was negatively correlated with p53 functionality rather than expression...
2016: OncoTargets and Therapy
Ashish Goyal, Ksenia Myacheva, Matthias Groß, Marcel Klingenberg, Berta Duran Arqué, Sven Diederichs
The CRISPR/Cas9 system provides a revolutionary genome editing tool for all areas of molecular biology. In long non-coding RNA (lncRNA) research, the Cas9 nuclease can delete lncRNA genes or introduce RNA-destabilizing elements into their locus. The nuclease-deficient dCas9 mutant retains its RNA-dependent DNA-binding activity and can modulate gene expression when fused to transcriptional repressor or activator domains. Here, we systematically analyze whether CRISPR approaches are suitable to target lncRNAs...
September 30, 2016: Nucleic Acids Research
Haifeng Qiu, Xiujuan Wang, Ruixia Guo, Qiuli Liu, Yuan Wang, Zhongfu Yuan, Jing Li, Huirong Shi
AIM: The aim of this study was to determine if HOTAIR rs920778 polymorphism is associated with ovarian cancer susceptibility and prognosis. MATERIALS & METHODS: The data were obtained from two independent groups including 329 ovarian cancer patients and 680 cancer-free, age-matched women. Blood samples were collected and genomic DNA was extracted for genotyping. RESULTS: TT genotype and T allele of HOTAIR rs920778 were significantly associated with a decreased ovarian cancer risk (p = 0...
October 3, 2016: Future Oncology
Fang-Teng Liu, Liang Zhou, Cheng Qiu, Guangfeng Xia, Pei-Qian Zhu, Hong-Liang Luo
PURPOSE: To explore the association between HOTAIR rs4759314 and cancer risk. METHODS: A comprehensive online search was conducted using PubMed, EMBASE, and CNKI databases to identify relevant studies. The case-control studies related to HOTAIR rs4759314 polymorphism and cancer risk were selected according to the inclusion and exclusion criteria. The retrieval time was until November 2015. After extracting the basic data information and performing an evaluation of the quality of the literature, the meta-analysis was performed using STATA 12...
July 2016: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
Sweta Sharma Saha, Rahul Roy Chowdhury, Nidhu Ranjan Mondal, Biman Chakravarty, Tanmay Chatterjee, Sudipta Roy, Sharmila Sengupta
PURPOSE: Previously, over-expression of the long noncoding RNA (lncRNA) HOTAIR has been found to be associated with the invasive and metastatic capacities of several epithelial cancers, including cervical cancer (CaCx). Here, we aimed at identifying functionally relevant genetic variants that may be employed to differentiate between clinically distinct CaCx subtypes, i.e., those exhibiting high HOTAIR levels and molecular signatures of metastasis and those lacking such signatures in the presence of low HOTAIR expression levels...
September 28, 2016: Cellular Oncology (Dordrecht)
Hua Zheng, Jing Min
This study investigated the function of HOTAIR in the growth and apoptosis of OS MG-63 cell line in vitro and further clarified its mechanism. The expression levels of HOTAIR in OS MG-63 cell line and normal osteoblast hFOB1.19 cell line were determined by RT-PCR, respectively. The growth and apoptosis of MG-63 cells in vitro were investigated by MTT assay and flow cytometry assay after HOTAIR was knocked down with retroviral vector construction. And the expression levels of cell growth and apoptosis related factors TGF-β, p53, Bcl-2, and TNF-α were determined to clarify the mechanism...
2016: BioMed Research International
Na Keum Lee, Jung Hwa Lee, Won Kyu Kim, Seongju Yun, Young Hoon Youn, Chan Hyuk Park, Yun Young Choi, Hogeun Kim, Sang Kil Lee
HOTAIR, a long non-coding RNA (lncRNA), plays a crucial role in tumor initiation and metastasis by interacting with the PRC2 complex and the modulation of its target genes. The role of HOTAIR in gastrointestinal stromal tumors (GISTs) is remains unclear. Herein we investigate the mechanism of HOTAIR in the genesis and promotion of GISTs. The expression of HOTAIR was found to be higher in surgically resected high-risk GISTs than that in low- and intermediate-risk GISTs. Using GIST-T1 and GIST882 cells, we demonstrated that HOTAIR repressed apoptosis, was associated with cell cycle progression, and controlled the invasion and migration of GIST cells...
September 21, 2016: Oncotarget
Marie Kalwa, Sonja Hänzelmann, Sabrina Otto, Chao-Chung Kuo, Julia Franzen, Sylvia Joussen, Eduardo Fernandez-Rebollo, Björn Rath, Carmen Koch, Andrea Hofmann, Shih-Han Lee, Andrew E Teschendorff, Bernd Denecke, Qiong Lin, Martin Widschwendter, Elmar Weinhold, Ivan G Costa, Wolfgang Wagner
There is a growing perception that long non-coding RNAs (lncRNAs) modulate cellular function. In this study, we analyzed the role of the lncRNA HOTAIR in mesenchymal stem cells (MSCs) with particular focus on senescence-associated changes in gene expression and DNA-methylation (DNAm). HOTAIR binding sites were enriched at genomic regions that become hypermethylated with increasing cell culture passage. Overexpression and knockdown of HOTAIR inhibited or stimulated adipogenic differentiation of MSCs, respectively...
September 14, 2016: Nucleic Acids Research
Lei Yang, Zu-Neng Lu
BACKGROUND: Mounting studies have illustrated an important role of HOTAIR in cancer progress, but few studies have reported its function in brain disease, including nerve cell-associated ischemic infarct. This study aimed to investigate the function of HOTAIR in ischemic infarct, involving its association with the level of NOX2 during hypoxia-induced ischemic infarct. METHODS: Ischemic infarct mice model was established by hypoxia induction, and cerebral dysfunction was evaluated with the surface cerebral blood flow in the ipsilateral hemisphere...
October 14, 2016: Biochemical and Biophysical Research Communications
Yancheng Zhong, Dan Gao, Shiwei He, Cijun Shuai, Shuping Peng
Ovarian cancer is the leading cause of death among women with gynecologic malignancies. The development and progression of ovarian cancer are complex and a multiple-step process. New biomarker molecules for diagnostic and prognostic are essential for novel therapeutic targets and to extend the survival time of patients with ovarian cancer. Long noncoding RNAs (lncRNAs) are non-protein-coding transcripts longer than 200 nucleotides that have recently been found as key regulators of various biological processes and to be involved in the development and progression of many diseases including cancers...
September 6, 2016: International Journal of Gynecological Cancer
Chi-Han Li, Zhangang Xiao, Joanna Hung-Man Tong, Ka-Fai To, Xiangdong Fang, Alfred Sl Cheng, Yangchao Chen
MicroRNA-34a (miR-34a) is frequently downregulated in pancreatic ductal adenocarcinoma (PDAC) cells, however, the silencing mechanism remains unclear. Enhancer of zeste homolog 2 (EZH2) is overexpressed in PDAC, and our previous miRNA profiling showed that inhibition of EZH2 in PDAC cells led to the re-expression of a group of tumor suppressor miRNAs including miR-34a. Here, we studied the effect of ectopic EZH2 expression to the silencing of miR-34a, and identified HOTAIR as an interacting partner to induce heterochromatin formation during miR-34a repression...
September 4, 2016: International Journal of Cancer. Journal International du Cancer
Yingchao Wang, Yuan Dang, Jingfeng Liu, Xiaojuan Ouyang
Recently, the homeobox (HOX) gene family has been reported as a factor in tumorigenesis. In the human genome, the HOX gene family contains 4 clusters with 39 genes and multiple transcripts. Mutation or abnormal expression of genes is responsible for developmental disorders. In addition, changes in the levels and activation of certain HOX genes has been associated with the development of cancer. Long non-coding RNAs (lncRNAs) have also been identified to serve critical functions in cancer. Although a limited number of lncRNAs have been previously investigated, the list of functional lncRNA genes has recently grown...
September 2016: Oncology Letters
Jinbao Sun, Haipeng Chu, Jianghai Ji, Gaoxiang Huo, Qinglei Song, Xue Zhang
The long non-coding RNA HOX transcript antisense RNA (HOTAIR) has been found overexpressed in many human malignancies and involved in tumor progression and metastasis. However, little is known about the potential biological roles of HOTAIR in tumor escape. In the present study, the expression of HOTAIR was detected in 59 paired cervical cancer tissue samples by real-time PCR and then subjected to correlation analysis with clinical features. The effects of HOTAIR on cervical cancer cells as well as the expression of human leukocyte antigen (HLA)-G were studied by overexpression and RNA interference approaches...
September 2016: International Journal of Oncology
Eun Ji Oh, Soo Hee Kim, Woo Ick Yang, Young Hyeh Ko, Sun Och Yoon
BACKGROUND: A long non-coding RNA hox transcript antisense intergenic RNA (HOTAIR) is involved in epigenetic regulation through chromatin remodeling by recruiting polycomb repressive complex 2 (PRC2) proteins (EZH2, SUZ12, and EED) that induce histone H3 trimethylation at lysine 27 (H3K27me3). Deregulation of c-MYC and interaction between c-MYC and EZH2 are well known in lymphomagenesis; however, little is known about the expression status of HOTAIR in diffuse large B-cell lymphomas (DLBCLs)...
September 2016: Journal of Pathology and Translational Medicine
Hui Zhu, Zheng Lv, Changming An, Meng Shi, Wenting Pan, Liqing Zhou, Wenjun Yang, Ming Yang
The role of long noncoding RNA (lncRNA) HOX transcript antisense RNA (HOTAIR) and its functional single nucleotide polymorphisms (SNPs) in papillary thyroid carcinoma (PTC) is still largely unclear. Therefore, we investigated the involvement of lncRNA HOTAIR and its three haplotype-tagging SNPs (htSNPs) in PTC. There was higher expression of HOTAIR in PTC tissues compared to normal tissues. A series of gain-loss assays demonstrated that HOTAIR acts as a PTC oncogene via promoting tumorigenic properties of PTC cells...
2016: Scientific Reports
Juan Zheng, Xiyan Xiao, Chunping Wu, Jiameng Huang, Yanping Zhang, Ming Xie, Ming Zhang, Liang Zhou
CONCLUSIONS: The aberrant expression of long non-coding RNA HOTAIR and transmethylase EZH2 played important roles in the progression and development of laryngeal squamous cell carcinoma (LSCC). OBJECTIVES: This research was aimed to explore the expression and correlation with clinicopathological characteristics of HOTAIR and EZH2 in LSCC, and to evaluate the function of the two in regulating the proliferation and cis-platinum resistance processes of LSCC. METHODS: Quantitative real time-PCR (qPCR) was conducted to measure the expression of HOTAIR and EZH2 in tissue samples...
August 19, 2016: Acta Oto-laryngologica
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