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https://www.readbyqxmd.com/read/28447380/lncrna-h19-modulates-wnt-%C3%AE-catenin-signaling-by-targeting-dkk4-in-hindlimb-unloaded-rat
#1
Bing Li, Jun Liu, Jie Zhao, Jian-Xiong Ma, Hao-Bo Jia, Yang Zhang, Guo-Sheng Xing, Xin-Long Ma
OBJECTIVE: To investigate the biological functions of long noncoding RNA-H19 (H19) in the pathogenesis of disuse osteoporosis (DOP). METHODS: Fifty-four male Sprague Dawley (SD) rats were randomly divided into three groups: baseline control (BC, 6), age-matched control (AC, 24), and hindlimb unloading (HLU, 24). The rats in the BC group were sacrificed at the beginning of the experiment, while the AC and HLU rats were sacrificed at different times (7, 14, 21 and 28 days after HLU)...
April 26, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28446797/fetiform-teratoma-was-a-parthenogenetic-tumor-arising-from-a-mature-ovum
#2
Kiyonori Miura, Takumi Kurabayashi, Chisei Satoh, Kensaku Sasaki, Tatsuya Ishiguro, Koh-Ichiro Yoshiura, Hideaki Masuzaki
The aim of this study was to investigate the parthenogenetic origin of fetiform teratoma by using molecular genetic studies and methylation status analyses. A fetiform teratoma was removed from a 35-year-old nulligravida woman. Genotyping of microsatellite marker loci, microarray analysis of single-nucleotide polymorphism (SNP) loci and methylation status analysis of the differentially methylated region (DMR) within the human IGF2-H19 locus were performed. Karyotypes of the host and the fetiform teratoma were 46, XX...
April 27, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28446530/long-non-coding-rnas-and-their-role-in-metastasis
#3
REVIEW
Ulrich H Weidle, Fabian Birzele, Gwen Kollmorgen, Rüdiger Rüger
The perception of long non-coding RNAs as chunk RNA and transcriptional noise has been steadily replaced by their role as validated targets for a diverse set of physiological processes in the past few years. However, for the vast majority of lncRNAs their precise mode of action and physiological function remain to be uncovered. A large body of evidence has revealed their essential role in all stages of cancirogenesis and metastasis. In this review we focus on the role of lncRNAs in metastasis. We grouped selected lncRNAs into three categories based on in vitro and in vivo mode of action-related studies and clinical relevance for metastasis...
May 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28443481/impact-of-abnormal-dna-methylation-of-imprinted-loci-on-human-spontaneous-abortion
#4
Yudong Liu, Yan Tang, Desheng Ye, Weixu Ma, Shuxian Feng, Xuelan Li, Xingyu Zhou, Xin Chen, Shiling Chen
Currently, there is a growing concern regarding the safety of assisted reproductive technology (ART) due to increased risk of spontaneous abortion (SA) and imprinting disorders in ART-conceived offspring. Early investigations suggested that aberrant genetic imprinting may be related to pregnancy loss; however, few studies have used human tissue specimens. Here the DNA methylation patterns of 3 imprinted genes, including maternally inherited GRB10 and the paternally inherited IGF2 and PEG3 genes, were evaluated in human chorionic villus samples by pyrosequencing and bisulfite sequencing polymerase chain reaction...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28430799/diagnostic-and-prognostic-value-of-long-noncoding-rnas-as-biomarkers-in-urothelial-carcinoma
#5
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
https://www.readbyqxmd.com/read/28430627/the-long-non-coding-rna-h19-promotes-cardiomyocyte-apoptosis-in-dilated-cardiomyopathy
#6
Yanlin Zhang, Mengyao Zhang, Weiting Xu, Jianchang Chen, Xiang Zhou
In the previous study, we generated a rat model of dilated cardiomyopathy (DCM) induced by adriamycin and found that the expression of lncRNA H19 was significantly upregulated in myocardial tissue. The present study was aimed to investigate the potential role of H19 in the pathogenesis of adriamycin-induced DCM. H19 knockdown in the myocardium of DCM rats attenuated cardiomyocyte apoptosis and improved left ventricular structure and function. Adriamycin treatment was associated with elevated H19 and miR-675 expression and increased apoptosis in neonatal cardiomyocytes...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28413450/fetal-testis-organ-culture-reproduces-the-dynamics-of-epigenetic-reprogramming-in-rat-gonocytes
#7
Arlette Rwigemera, Fabien Joao, Geraldine Delbes
BACKGROUND: Epigenetic reprogramming is a critical step in male germ cell development that occurs during perinatal life. It is characterized by the remodeling of different epigenetic marks such as DNA methylation (5mC) and methylation of histone H3. It has been suggested that endocrine disruptors can affect the male germline epigenome by altering epigenetic reprogramming, but the mechanisms involved are still unknown. We have previously used an organ culture system that maintains the development of the different fetal testis cell types, to evaluate the effects of various endocrine disruptors on gametogenesis and steroidogenesis in the rat...
2017: Epigenetics & Chromatin
https://www.readbyqxmd.com/read/28407375/h19-promotes-cholestatic-liver-fibrosis-by-preventing-zeb1-mediated-inhibition-of-epcam
#8
Yongfeng Song, Chune Liu, Xia Liu, Jocelyn Trottier, Michele Beaudoin, Li Zhang, Chad Pope, Guangyong Peng, Olivier Barbier, Xiaobo Zhong, Linheng Li, Li Wang
Based on our recent finding that disruption of bile acid (BA) homeostasis in mice results in the induction of hepatic lncRNA H19 expression, we sought to elucidate the role of H19 in cholestatic liver fibrosis. Hepatic overexpression of H19RNA augmented bile duct ligation (BDL)-induced liver fibrosis, which was accompanied by the elevation of serum ALT, AST, bilirubin, and BA levels. Multiple genes related to liver fibrosis, inflammation, and biliary hyperplasia were increased in H19-BDL vs Null-BDL mice, whereas genes in BA synthesis were decreased...
April 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28404885/significant-association-between-lncrna-h19-polymorphisms-and-cancer-susceptibility-a-meta-analysis
#9
Xue-Feng Li, Xin-Hai Yin, Jun-Wei Cai, Ming-Ju Wang, Yu-Qin Zeng, Min Li, Yu-Ming Niu, Ming Shen
Previous epidemiological research suggests polymorphisms in long non-coding RNA (lncRNA) H19 are associated with an increased risk of cancer, but the results are inconsistent. We therefore conducted a meta-analysis to more accurately determine the association between lncRNA H19 polymorphisms and cancer risk. The PubMed, Embase, and Science Citation Index online databases were searched and 11 relevant studies involving a total of 33,209 participants were identified. Odds ratios (ORs) and corresponding 95% confidence interval (CIs) from these studies were used to detect associations between H19 polymorphisms and cancer risk using five genetic models...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28389671/identification-of-a-six-lncrna-signature-associated-with-recurrence-of-ovarian-cancer
#10
Kai Yang, Yan Hou, Ang Li, Zhenzi Li, Wenjie Wang, Hongyu Xie, Zhiwei Rong, Ge Lou, Kang Li
Ovarian cancer (OvCa) is the leading cause of death among all gynecological malignancies, and recurrent OvCa is almost always incurable. In this study, we developed a signature based on long non-coding RNAs (lncRNAs) associated with OvCa recurrence to facilitate personalized OvCa therapy. lncRNA expression data were extracted from GSE9891 and GSE30161. LASSO (least absolute shrinkage and selection operator) penalized regression was used to identify an lncRNA-based signature using the GSE9891 training cohort...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382860/dysregulation-of-lncrnas-in-placenta-and-pathogenesis-of-preeclampsia
#11
Xuejing Song, Xiucui Luo, Quansheng Gao, Yuhuan Wang, Qing Gao, Wei Long
Preeclampsia, a gestational disease characterized by hypertension and proteinuria twenty weeks into pregnancy, is one of the leading causes of fetal and maternal mortality. Although multiple genetic and environmental factors are found to be related to the preeclampsia risk, the pathogenic pathways remain largely undefined. The placenta plays a critical role in the fetal development by carrying out the barrier, fetal-maternal exchange, and endocrine functions during pregnancy. Accumulated data indicated that the expression of multiple long noncoding RNA (LncRNA) is dysregulated in preeclamptic placentas...
April 4, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28376483/long-non-coding-rnas-in-cardiac-remodeling
#12
Shutong Shen, Huimin Jiang, Yihua Bei, Junjie Xiao, Xinli Li
Cardiac remodeling occurs after stress to the heart, manifested as pathological processes, including hypertrophy and apoptosis of cardiomyocytes, dysfunction of vascular endothelial cells and vascular smooth muscle cells as well as differentiation and proliferation of fibroblasts, ultimately resulting in progression of cardiovascular diseases. Emerging evidence has revealed that long non-coding RNAs (lncRNAs) acted as powerful and dynamic modifiers of cardiac remodeling. LncRNAs including Chaer, Chast, Mhrt, CHRF, ROR, H19, and MIAT have been implicated in cardiac hypertrophy while NRF, H19, APF, CARL, UCA, Mhrt and several other lncRNAs (n379599, n379519, n384640, n380433 and n410105) in cardiomyocyte loss and extracellular matrix remodeling...
April 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28375605/raman-spectroscopic-signature-markers-of-dopamine-human-dopamine-transporter-interaction-in-living-cells
#13
Achut Prasad Silwal, Rajeev Yadav, Jon E Sprague, H Peter Lu
Dopamine (DA) controls many psychological and behavioral activities in the central nervous system (CNS) through interactions with the human dopamine transporter (hDAT) and dopamine receptors. The roles of DA in the function of the CNS are affected by the targeted binding of drugs to hDAT; thus, hDAT plays a critical role in neurophysiology and neuropathophysiology. An effective experimental method is necessary to study the DA-hDAT interaction and effects of variety of drugs like psychostimulants and anti-depressants that are dependent on this interaction...
April 4, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28367967/a-g-quadruplex-structure-at-the-5-end-of-the-h19-coding-region-regulates-h19-transcription
#14
Mitsuko Fukuhara, Yue Ma, Kazuo Nagasawa, Fumiko Toyoshima
The H19 gene, one of the best known imprinted genes, encodes a long non-coding RNA that regulates cell proliferation and differentiation. H19 RNA is widely expressed in embryonic tissues, but its expression is restricted in only a few tissues after birth. However, regulation of H19 gene expression remains poorly understood outside the context of genomic imprinting. Here we identified evolutionarily conserved guanine (G)-rich repeated motifs at the 5' end of the H19 coding region that are consistent with theoretically deduced G-quadruplex sequences...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28362134/estrogen-signaling-through-estrogen-receptor-%C3%AE-regulates-dna-methylation-and-its-machinery-in-male-germ-line-in-adult-rats
#15
Kushaan Dumasia, Anita Kumar, Sharvari Deshpande, Nafisa H Balasinor
Estrogen, through its receptors, regulates various aspects of spermatogenesis and male fertility. To understand the roles of estrogen receptors (ERα and ERβ) in male fertility, we have developed in vivo selective ER agonist administration models. Treatment of adult male rats with ERα or ERβ agonist for 60 d decreases fertility and litter size mainly due to increased pre- and post-implantation embryo loss. Since epigenetic mechanisms like DNA methylation play a crucial role in male fertility, we investigated the effects of the ER agonists on DNA methylation in spermatozoa...
March 31, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28358427/h19-promotes-the-migration-and-invasion-of-colon-cancer-by-sponging-mir-138-to-upregulate-the-expression-of-hmga1
#16
Qingqiang Yang, Xin Wang, Chunyan Tang, Xuan Chen, Jianjun He
Colon cancer is the most common digestive system malignancy, along with high mortality rate, familial transmissibility and hepatic metastasis. Our study investigated the role of long non-coding RNA H19 in colon cancer. We found that H19 was overexpressed in colon cancer tissues and cell lines, the interference of H19 by short hairpin RNA (shRNA) effectively decreased the migration and invasion of colon cancer cells (HT-29 and RKO). Besides, miR-138 was predicted a target of H19, and low expression of miR-138 was found in colon cancer tissues and cells...
March 29, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28350187/epigenetic-status-of-h19-igf2-imprinted-genes-and-loss-of-5-hydroxymethylcytosine-in-the-brain-of-cloned-goats
#17
Mingtian Deng, Caifang Ren, Zifei Liu, Guomin Zhang, Feng Wang, Yongjie Wan
In mammals, the imprinted genes play vital roles in development and are generally controlled by DNA methylation at imprinting control regions (ICRs). Recently, it was discovered that 5-hydroxymethylcytosine (5-hmC) is a stable epigenetic modification; however, its functions in cloned animal genomes have not yet been fully elucidated. In this study, we interrogated and quantified the 5-hmC levels in the brain of cloned goats and discovered upregulation of Uhrf1 (p < 0.001), Dnmt1 (p < 0.05), Dnmt3a (p < 0...
March 28, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28344827/perinatal-high-methyl-donor-alters-gene-expression-in-igf-system-in-male-offspring-without-altering-dna-methylation
#18
Valérie Amarger, Fanny Giudicelli, Anthony Pagniez, Patricia Parnet
AIM: To investigate the effect of a protein restriction and a supplementation with methyl donor nutrients during fetal and early postnatal life on the expression and epigenetic state of imprinted genes from the IGF system. MATERIALS & METHODS: Pregnant female rats were fed a protein-restricted diet supplemented or not with methyl donor. RESULTS: Gene expression of the Igf2, H19, Igf1, Igf2r and Plagl1 genes in the liver of male offspring at birth and weaning was strongly influenced by maternal diet...
March 2017: Future Science OA
https://www.readbyqxmd.com/read/28342449/a-systematic-review-and-meta-analysis-of-the-association-between-long-non-coding-rna-polymorphisms-and-cancer-risk
#19
REVIEW
Zhi Lv, Qian Xu, Yuan Yuan
It has been suggested that long non-coding RNA (lncRNA) gene polymorphisms are associated with cancer risk. In this article, we conducted a systematic review related to studies on the association between lncRNA single-nucleotide polymorphisms (SNPs) and the overall risk of cancer. A total 17 SNPs in four common lncRNA genes were included in the meta-analysis. In the lncRNA H19, the rs2735971 A/G, rs2839698C/T, and rs3024270 G/C polymorphisms, but not rs217727C/T, were correlated with overall cancer risk. The results also suggested that other SNPs were correlated with overall cancer risk, namely, two in HOTAIR (HOX transcript antisense RNA: rs920778C/T and rs7958904 G/C) and two in PRNCR1 (rs1016343C/T and rs16901946 A/G)...
January 2017: Mutation Research
https://www.readbyqxmd.com/read/28340599/dna-methylation-changes-at-infertility-genes-in-newborn-twins-conceived-by-in-vitro-fertilisation
#20
Juan E Castillo-Fernandez, Yuk Jing Loke, Sebastian Bass-Stringer, Fei Gao, Yudong Xia, Honglong Wu, Hanlin Lu, Yuan Liu, Jun Wang, Tim D Spector, Richard Saffery, Jeffrey M Craig, Jordana T Bell
BACKGROUND: The association of in vitro fertilisation (IVF) and DNA methylation has been studied predominantly at regulatory regions of imprinted genes and at just thousands of the ~28 million CpG sites in the human genome. METHODS: We investigated the links between IVF and DNA methylation patterns in whole cord blood cells (n = 98) and cord blood mononuclear cells (n = 82) from newborn twins using genome-wide methylated DNA immunoprecipitation coupled with deep sequencing...
March 24, 2017: Genome Medicine
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