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Competitive endogenous RNA

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https://www.readbyqxmd.com/read/28731781/lncrna-pvt1-facilitates-invasion-through-upregulation-of-mmp9-in-nonsmall-cell-lung-cancer-cell
#1
Wei Chen, Huayun Zhu, Li Yin, Tingting Wang, Jianfeng Wu, Jianhua Xu, Hua Tao, Juying Liu, Xia He
Lung cancer is the most common solid tumor around the world. It has been reported that upregulation of long noncoding RNA (lncRNA) plasmacytoma variant translocation 1 (lncRNA-PVT1) is closely associated with tumor metastasis. However, the function and underlying molecular mechanism of lncRNA-PVT1 in nonsmall cell lung cancer (NSCLC) invasion remain unknown. In this study, we found that overexpression of lncRNA-PVT1 promoted the invasive ability of NSCLC cells, whereas silence of lncRNA-PVT1 suppressed cell invasion...
July 21, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28698395/long-noncoding-rna-xist-promotes-malignancies-of-esophageal-squamous-cell-carcinoma-via-regulation-of-mir-101-ezh2
#2
Xiaoliang Wu, Xiaoxiao Dinglin, Xing Wang, Wen Luo, Qi Shen, Yong Li, Ling Gu, Qianghua Zhou, Haotu Zhu, Yanjie Li, Chaodi Tan, Xianzi Yang, Zhenfeng Zhang
The long non-coding RNA XIST is a long non-coding RNA that associates with polycomb repressive complex 2 to regulate X-chromosome inactivation in female mammals. The biological roles as well as the underlying mechanisms of XIST in esophageal squamous cell carcinoma remained yet to be solved. Our data indicated that XIST was significantly upregulated in esophageal squamous cancerous tissues and cancer cell lines, as compared with that in the corresponding non-cancerous tissues and immortalized normal squamous epithelial cells...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28695771/microrna-200b-suppresses-the-invasion-and-migration-of-hepatocellular-carcinoma-by-downregulating-rhoa-and-circrna_000839
#3
Ben-Gang Wang, Jun-Shuai Li, Yong-Feng Liu, Qian Xu
MicroRNAs could mediate the targeted coding gene and the targeted non-coding RNA to form endogenous competition, which have an important regulatory role in tumorigenesis of many types of cancer, including hepatocellular carcinoma. The goal of this study was to characterize the role of miR-200b in the pathogenesis of hepatocellular carcinoma. We identified miR-200b that was predicted to regulate RhoA and circ_000839. Our data establish that miR-200b is expressed at a relatively low level in hepatocellular carcinoma ( p < 0...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28691642/xiap-3-untranslated-region-serves-as-a-competitor-for-hmga2-by-arresting-endogenous-let-7a-5p-in-human-hepatocellular-carcinoma
#4
Wen-Yong Wu, Si-Qi Tao, Xiao-Nan Wang, Peter E Lobie, Zheng-Sheng Wu
X-linked inhibitor of apoptosis protein functions as an intrinsic regulator of apoptosis by inhibition of caspase activity and possesses a pivotal role in human cancer development and progression. A growing body of literature has demonstrated that microRNAs lead to the degradation or translational repression of messenger RNAs by binding to the non-coding region of messenger RNA at the 3'-untranslated region. Here, we revealed that the expression of HMGA2 is upregulated with X-linked inhibitor of apoptosis protein after transfection of X-linked inhibitor of apoptosis protein 3'-untranslated region in hepatocellular carcinoma cells, suggesting that X-linked inhibitor of apoptosis protein 3'-untranslated region serves as a competitor for microRNAs and prevent the co-targeted messenger RNA, HMGA2, from being suppressed...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28655924/downregulated-usp3-mrna-functions-as-a-competitive-endogenous-rna-of-smad4-by-sponging-mir-224-and-promotes-metastasis-in-colorectal-cancer
#5
Zaozao Wang, Jie Yang, Jiabo Di, Ming Cui, Jiadi Xing, Fan Wu, Wei Wu, Hong Yang, Chenghai Zhang, Zhendan Yao, Nan Zhang, Beihai Jiang, Xiangqian Su
Increasing evidence shows that competitive endogenous RNAs (ceRNAs) can affect the expression of other transcripts by sequestering common microRNAs (miRNAs), and participate in tumourigenesis. As a potent tumour suppressor in colorectal cancer (CRC), SMAD4 is regulated by many miRNAs. However, the regulation of SMAD4 by ceRNAs has never been examined. In the present study, we found that USP3 modulated SMAD4 expression in a miRNA dependent, and protein-coding gene independent manner. USP3 and SMAD4 were directly targeted by miR-224, and overexpression of the USP3 3'UTR could inhibit metastasis caused by the loss of USP3...
June 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28654907/knockdown-of-malat1-expression-inhibits-huvec-proliferation-by-upregulation-of-mir-320a-and-downregulation-of-foxm1-expression
#6
Jian-Yong Sun, Zheng-Wei Zhao, Wei-Miao Li, Guang Yang, Peng-Yu Jing, Pei Li, Hai-Zhou Dang, Zhao Chen, Yong-An Zhou, Xiao-Fei Li
Regulation of cancer angiogenesis could be a useful strategy in cancer therapy. Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a long non-coding RNA (lncRNA), and can induce cancer cell proliferation, while lncRNAs, generally are able to act as microRNA (miRNA) sponges. The latter is a type of competitive endogenous RNA (ceRNA) that regulates expression of the targeting miRNAs and protein-coding genes. This study investigated the proliferative role of MALAT1 in human umbilical vein endothelial cells (HUVECs) and the underlying molecular events...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28643459/construction-of-competitive-endogenous-rna-network-reveals-regulatory-role-of-long-non-coding-rnas-in-type-2-diabetes-mellitus
#7
Zijing Lin, Xinyu Li, Xiaorong Zhan, Lijie Sun, Jie Gao, Yan Cao, Hui Qiu
Increasing epidemic of type 2 diabetes mellitus (T2DM) and its comorbidities makes it urgent to understand the pathogenesis and regulatory mechanism. However, little is known about the regulatory role of lncRNAs in diabetes. Here, we constructed a T2DM-related competitive endogenous RNA (ceRNA) network (DMCN) to explore biological function of lncRNAs during the development of diabetes mellitus. This network contained 351 nodes including 98 mRNAs, 86 microRNAs and 167 lncRNAs. Functional analysis showed that the mRNAs in DMCN were annotated into some diabetes-related pathways...
June 23, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28624809/genome-wide-analysis-of-aberrantly-expressed-lncrnas-and-mirnas-with-associated-co-expression-and-cerna-networks-in-%C3%AE-thalassemia-and-hereditary-persistence-of-fetal-hemoglobin
#8
Ketong Lai, Siyuan Jia, Shanjuan Yu, Jianming Luo, Yunyan He
The implications of lncRNAs regarding fetal hemoglobin (HbF) induction in hemoglobin disorders remain poorly understood. In this study, microarray analysis was performed to profile lncRNAs, miRNAs and mRNAs in individuals with hereditary persistence of fetal hemoglobin (HPFH), β-thalassemia carriers with high HbF levels and healthy controls. The results show aberrant expression of 862 lncRNAs, 568 mRNAs and 63 miRNAs in the high-HbF group compared with the control group. Altered NR_001589, NR_120526, T315543, miR-486-3p, miR-19b-1-5p and miR-20a-3p expression was confirmed by quantitative reverse transcription-polymerase chain reaction, and Spearman correlation coefficients revealed significant positive correlations with HbF...
May 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28621687/differentially-expressed-lncrnas-and-mirnas-with-associated-cerna-networks-in-aged-mice-with-postoperative-cognitive-dysfunction
#9
Changwei Wei, Ting Luo, Shanshan Zou, Xiaobin Zhou, Wenzhen Shen, Xiaolin Ji, Qi Li, Anshi Wu
Postoperative cognitive dysfunction (POCD) is a common postoperative complication observed in elderly patients. Using microarray analyses, we comprehensively compared long non-coding RNA (lncRNA), messenger RNA (mRNA), and microRNA (miRNA) expression profiles in hippocampal tissues from a mouse model of POCD and control mice. A total of 175 lncRNAs, 117 mRNAs, and 26 miRNAs were differentially expressed between POCD and control mice. Gene ontology (GO) and KEGG pathway enrichment analyses were performed to explore the principal functions of dysregulated genes...
June 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28619512/part-1-functions-as-a-competitive-endogenous-rna-for-promoting-tumor-progression-by-sponging-mir-143-in-colorectal-cancer
#10
Yongbo Hu, Zhen Ma, Yiming He, Wei Liu, Yu Su, Zongbin Tang
LncRNAs were altered in several cancers and played a crucial role in various biological activities and progressions of different diseases, including proliferation, chemical resistance, and metastasis. In the present study, we revealed that prostrate androgen-regulated transcript-1 (PART-1) was highly expressed in colorectal cancer cells and tissues, and knockdown of PART-1 suppressed cell proliferation and metastasis, both in vitro and in vivo. In addition, PART-1 functioned as a ceRNA of DNMT3A, by sponging miR-143...
August 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28611824/posttranscriptional-regulation-controls-calretinin-expression-in-malignant-pleural-mesothelioma
#11
Jelena Kresoja-Rakic, Merve Sulemani, Michaela B Kirschner, Manuel Ronner, Glen Reid, Steven Kao, Beat Schwaller, Walter Weder, Rolf A Stahel, Emanuela Felley-Bosco
Calretinin (CALB2) is a diagnostic and prognostic marker in malignant pleural mesothelioma (MPM). We previously reported that calretinin expression is regulated at the mRNA level. The presence of a medium-sized (573 nucleotide) 3' untranslated region (3'UTR) predicted to contain binding sites for miR-30a/b/c/d/e and miR-9 as well as an adenine/uridine-rich element (ARE) in all three transcripts arising from the CALB2 gene, suggests that calretinin expression is regulated via posttranscriptional mechanisms. Our aim was to investigate the role of the CALB2-3'UTR in the posttranscriptional regulation of calretinin expression in MPM...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28588133/novel-nonreplicating-vaccinia-virus-vector-enhances-expression-of-heterologous-genes-and-suppresses-synthesis-of-endogenous-viral-proteins
#12
Linda S Wyatt, Wei Xiao, Jeffrey L Americo, Patricia L Earl, Bernard Moss
Viruses are used as expression vectors for protein synthesis, immunology research, vaccines, and therapeutics. Advantages of poxvirus vectors include the accommodation of large amounts of heterologous DNA, the presence of a cytoplasmic site of transcription, and high expression levels. On the other hand, competition of approximately 200 viral genes with the target gene for expression and immune recognition may be disadvantageous. We describe a vaccinia virus (VACV) vector that uses an early promoter to express the bacteriophage T7 RNA polymerase; has the A23R intermediate transcription factor gene deleted, thereby restricting virus replication to complementing cells; and has a heterologous gene regulated by a T7 promoter...
June 6, 2017: MBio
https://www.readbyqxmd.com/read/28558729/high-throughput-validation-of-cerna-regulatory-networks
#13
Hua-Sheng Chiu, María Rodríguez Martínez, Mukesh Bansal, Aravind Subramanian, Todd R Golub, Xuerui Yang, Pavel Sumazin, Andrea Califano
BACKGROUND: MicroRNAs (miRNAs) play multiple roles in tumor biology. Interestingly, reports from multiple groups suggest that miRNA targets may be coupled through competitive stoichiometric sequestration. Specifically, computational models predicted and experimental assays confirmed that miRNA activity is dependent on miRNA target abundance, and consequently, changes in the abundance of some miRNA targets lead to changes to the regulation and abundance of their other targets. The resulting indirect regulatory influence between miRNA targets resembles competition and has been dubbed competitive endogenous RNA (ceRNA)...
May 30, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28539329/aberrant-methylation-mediated-silencing-of-lncrna-meg3-functions-as-a-cerna-in-esophageal-cancer
#14
Zhiming Dong, Aili Zhang, Shengnan Liu, Fan Lu, Yanli Guo, Guoqiang Zhang, Fenglou Xu, Yabin Shi, Supeng Shen, Jia Liang, Wei Guo
Maternally expressed gene 3 (MEG3), a long non-coding RNA (lncRNA), has tumor-suppressor properties and its expression is lost in several human tumors. However, its biological role in esophageal squamous cell carcinoma (ESCC) tumorigenesis is poorly defined. The present study determined the role and methylation status of MEG3 in esophageal cancer cells and ESCC clinical specimens, and further observed the competing endogenous RNA (ceRNA) activity of MEG3 in the pathogenesis and development of ESCC. Significant downregulation of MEG3 was detected in esophageal cancer cells and ESCC tissues and the expression level of MEG3 was significantly increased in cancer cells after treated with the DNA methyltransferase inhibitor 5-Aza-dC...
May 24, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28475648/hiv-1-competition-experiments-in-humanized-mice-show-that-apobec3h-imposes-selective-pressure-and-promotes-virus-adaptation
#15
Yusuke Nakano, Naoko Misawa, Guillermo Juarez-Fernandez, Miyu Moriwaki, Shinji Nakaoka, Takaaki Funo, Eri Yamada, Andrew Soper, Rokusuke Yoshikawa, Diako Ebrahimi, Yuuya Tachiki, Shingo Iwami, Reuben S Harris, Yoshio Koyanagi, Kei Sato
APOBEC3 (A3) family proteins are DNA cytosine deaminases recognized for contributing to HIV-1 restriction and mutation. Prior studies have demonstrated that A3D, A3F, and A3G enzymes elicit a robust anti-HIV-1 effect in cell cultures and in humanized mouse models. Human A3H is polymorphic and can be categorized into three phenotypes: stable, intermediate, and unstable. However, the anti-viral effect of endogenous A3H in vivo has yet to be examined. Here we utilize a hematopoietic stem cell-transplanted humanized mouse model and demonstrate that stable A3H robustly affects HIV-1 fitness in vivo...
May 5, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28470264/reconstruction-and-analysis-of-the-lncrna-mirna-mrna-network-based-on-competitive-endogenous-rna-reveal-functional-lncrnas-in-rheumatoid-arthritis
#16
Hui Jiang, Rong Ma, Shubiao Zou, Yongzhong Wang, Zhuqing Li, Weiping Li
Rheumatoid arthritis (RA) is an autoimmune disease with an unknown etiology, occurring in approximately 1.0% of general population. More and more studies have suggested that long non-coding RNAs (lncRNAs) could play important roles in various biological processes and be associated with the pathogenesis of different kinds of diseases including RA. Although a large number of lncRNAs have been found, our knowledge of their function and physiological/pathological significance is still in its infancy. In order to reveal functional lncRNAs and identify the key lncRNAs in RA, we reconstructed a global triple network based on the competitive endogenous RNA (ceRNA) theory using the data from National Center for Biotechnology Information Gene Expression Omnibus and our previous paper...
June 1, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28444368/simultaneous-targeting-of-multiple-gene-homeologues-to-alter-seed-oil-production-in-camelina-sativa
#17
J A Aznar-Moreno, T P Durrett
The ability to easily transform Camelina sativa with biosynthetic enzymes derived from other plants has made this oil seed crop an ideal platform for the production of unusual lipids valuable for different applications. However, in addition to expressing transgenic enzymes, the suppression of endogenous enzyme activity to reduce competition for common substrates or cofactors is also required to enhance the production of target compounds. As camelina possesses a relatively undifferentiated hexaploid genome, up to three gene homeologues can encode for any particular enzymatic activity, complicating efforts to alter endogenous biosynthetic pathways...
April 21, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28440616/discovery-and-characterization-of-a-eukaryotic-initiation-factor-4a-3-selective-inhibitor-that-suppresses-nonsense-mediated-mrna-decay
#18
Misa Iwatani-Yoshihara, Masahiro Ito, Yoshihiro Ishibashi, Hideyuki Oki, Toshio Tanaka, Daisuke Morishita, Takashi Ito, Hiromichi Kimura, Yasuhiro Imaeda, Samuel Aparicio, Atsushi Nakanishi, Tomohiro Kawamoto
Eukaryotic initiation factor 4A-3 (eIF4A3) is an Asp-Glu-Ala-Asp (DEAD) box-family adenosine triphosphate (ATP)-dependent RNA helicase. Subtypes eIF4A1 and eIF4A2 are required for translation initiation, but eIF4A3 participates in the exon junction complex (EJC) and functions in RNA metabolism including nonsense-mediated RNA decay (NMD). No small molecules for NMD inhibition via selective inhibition of eIF4A3 have been discovered. Here, we identified allosteric eIF4A3 inhibitors from a high-throughput screening campaign...
May 10, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28406715/competitive-endogenous-rna-network-potential-implication-for-systemic-lupus-erythematosus
#19
REVIEW
Lian-Ju Li, Wei Zhao, Sha-Sha Tao, Rui-Xue Leng, Yin-Guang Fan, Hai-Feng Pan, Dong-Qing Ye
Competitive endogenous RNA (ceRNA) hypothesis proposes that RNA transcripts, both coding and non-coding, crosstalk with and coregulate each other using microRNA response elements (MREs). CeRNA analysis tremendously expands functional information of coding and non-coding RNAs. Mounting evidence have shown that various types of RNAs, including pseudogenes, long non-coding RNAs, circular RNAs, and messenger RNAs, can function as ceRNAs in distinct physiological and pathophysiological states. Many validated ceRNA pairs participate in the initiation and progression of cancers, and systemic ceRNA network analyses revealing potential of ceRNAs in diagnosis, therapy, and prognosis of cancers have also been performed...
June 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28400279/snhg1-lncrna-negatively-regulates-mir-199a-3p-to-enhance-cdk7-expression-and-promote-cell-proliferation-in-prostate-cancer
#20
Jianping Li, Zhipeng Zhang, Li Xiong, Chuan Guo, Tao Jiang, Lilan Zeng, Ge Li, Juan Wang
Long noncoding RNAs (lncRNAs) have been reported to play vital roles in the development of human cancers, but our understandings of most lncRNAs in cancers are still limited. Recently, accumlating evidences have showed that many RNA transcripts could function as competing endogenous RNAs (ceRNAs) by competitively binding common microRNAs. In this study, we demonstrated that a lncRNA, Small Nucleolar RNA Host Gene 1 (SNHG1), as a ceRNA for miR-199a-3p, played a critical role in prostate cancer cell proliferation...
May 20, 2017: Biochemical and Biophysical Research Communications
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