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https://www.readbyqxmd.com/read/29777751/evaluating-the-susceptibility-of-ago2-loaded-micrornas-to-degradation-by-nucleases-in-vitro
#1
Reyad Elbarbary, Lynne E Maquat
MicroRNAs (miRNAs) comprise a class of small non-coding RNAs that regulate the stability and/or translatability of most protein-coding transcripts. Steady-state levels of mature miRNAs can be controlled through mechanisms that influence their biogenesis and/or decay rates. Pathways that mediate mature miRNA decay are less well understood than those that mediate miRNA biogenesis. We recently described Tudor-staphylococcal/micrococcal-like nuclease (TSN)-mediated miRNA decay (TumiD) as a cellular pathway that promotes the sequence-specific endonucleolytic decay of miRNAs that harbor a CA and/or UA dinucleotide...
May 16, 2018: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29777734/gga-mir-454-suppresses-infectious-bursal-disease-virus-ibdv-replication-via-directly-targeting-ibdv-genomic-segment-b-and-cellular-suppressors-of-cytokine-signaling-6-socs6
#2
Mengjiao Fu, Bin Wang, Xiang Chen, Zhiyuan He, Yongqiang Wang, Xiaoqi Li, Hong Cao, Shijun J Zheng
MicroRNAs (miRNAs), as post-transcriptional regulators, play important roles in the process of viral infection through inhibiting virus replication or modulating host immune response. However, the role of miRNAs in host response against infectious bursal disease virus (IBDV) infection is still unclear. In this study, we found that gga-miR-454 of the host was decreased in response to IBDV infection and that transfection of DF-1 cells with miR-454 inhibited IBDV replication via directly targeting the specific sequence of IBDV genomic segment B, while blockage of endogenous miR-454 by inhibitors enhanced virus replication...
May 16, 2018: Virus Research
https://www.readbyqxmd.com/read/29777630/microrna-493-is-a-prognostic-factor-in-triple-negative-breast-cancer
#3
Ling Yao, Yirong Liu, Zhigang Cao, Junjing Li, Yanni Huang, Xin Hu, Zhiming Shao
Breast cancer is one of the most common malignant diseases in women, in which triple-negative breast cancer (TNBC) exhibits higher aggressiveness and recurrence rates, while there are no effective targets or tailored treatments for patients with this subtype. Thus, finding effective prognostic markers for TNBC might help clinicians in their ability to care for their patients. We used tissue microarrays (TMAs) to detect miR-493 expression in breast cancer samples. A miRCURY LNATM detection probe specific for miR-493 was used in in situ hybridization assays...
May 19, 2018: Cancer Science
https://www.readbyqxmd.com/read/29777484/identification-of-differentially-expressed-micrornas-in-sahiwal-bos-indicus-breed-of-cattle-during-thermal-stress
#4
Gyanendra Singh Sengar, Rajib Deb, Umesh Singh, Vivek Junghare, Saugata Hazra, T V Raja, Rani Alex, Ashish Kumar, R R Alyethodi, Rajiv Kant, Subhash Jakshara, C G Joshi
microRNAs (miRNAs) are a class of small non-coding RNAs that play key roles in post transcriptional gene regulation that influence various fundamental cellular processes, including the cellular responses during environmental stresses. However, perusal of literatures revealed few reports on the differential expression of miRNA during thermal stress in Indian native (Bos indicus) cattle breeds. The present investigation aimed to identify differentially expressed miRNAs during thermal stress in Sahiwal (Bos indicus) dairy cattle breed of India, adapted with tropical climate over a long period of time...
May 18, 2018: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/29777440/mir-27a-b-regulates-liver-regeneration-by-posttranscriptional-modification-of-tmub1
#5
Xiang Lan, Guangyao Li, Hongming Liu, Hangwei Fu, Ping Chen, Menggang Liu
BACKGROUND: Transmembrane and ubiquitin-like domain-containing 1 protein (Tmub1) negatively regulates liver regeneration. However, whether this regulation involves posttranscriptional modification of Tmub1 expression is unknown. AIM: The aim of the study was to investigate whether microRNA (miR)-27a/b regulates posttranscriptional modification of Tmub1 and cell proliferation during liver regeneration. METHODS: Tmub1 mRNA 3'-untranslated region (UTR) sequences were analyzed using online software...
May 17, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29775785/integration-of-mirna-weighted-gene-co-expression-network-and-mirna-mrna-co-expression-analyses-reveals-potential-regulatory-functions-of-mirnas-in-calf-rumen-development
#6
Duy N Do, Pier-Luc Dudemaine, Bridget E Fomenky, Eveline M Ibeagha-Awemu
This study aimed to explore the roles of microRNAs (miRNAs) in calf rumen development during early life. Rumen tissues were collected from 16 calves (8 at pre-weaning and 8 at post-weaning) for miRNA-sequencing, differential expression (DE), miRNA weighted gene co-expression network (WGCNA) and miRNA-mRNA co-expression analyses. 295 miRNAs were identified. Bta-miR-143, miR-26a, miR-145 and miR-27b were the most abundantly expressed. 122 miRNAs were significantly DE between the pre- and post-weaning periods and the most up- and down-regulated miRNAs were bta-miR-29b and bta-miR-493, respectively...
May 15, 2018: Genomics
https://www.readbyqxmd.com/read/29775740/eriocheir-sinensis-microrna-7-targets-crab-myd88-to-enhance-white-spot-syndrome-virus-replication
#7
Ying Huang, Wen Wang, Zhiqiang Xu, Jianlin Pan, Zhe Zhao, Qian Ren
MicroRNAs (miRNAs) are non-coding RNAs that regulate gene expression at the posttranscriptional level. In this study, the function of microRNA-7 (miR-7) in host-virus interaction was investigated. Replication of White spot syndrome virus (WSSV) was enhanced with the overexpression of miR-7 and inhibited with the downregulation of miR-7 by using anti-miRNA oligonucleotide AMO-miR-7. The target gene of miR-7 was predicted using bioinformatics methods. Results showed that crab myeloid differentiation factor 88 (Myd88) could be targeted by miR-7...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29775473/na-k-atpase-signaling-mediates-mir-29b-3p-regulation-and-cardiac-fibrosis-formation-in-mice-with-chronic-kidney-disease
#8
Christopher A Drummond, Xiaoming Fan, Steven T Haller, David J Kennedy, Jiang Liu, Jiang Tian
The Na/K-ATPase is an important membrane ion transporter and a signaling receptor that is essential for maintaining normal cell function. The current study examined the role of Na/K-ATPase signaling in regulating miR-29b-3p, an anti-fibrotic microRNA, in a mouse chronic kidney disease (CKD) model (5/6th partial nephrectomy or PNx). The results showed that CKD induced significant reduction of miR-29b-3p expression in the heart tissue by activation of Src and NFκB signaling in these animals. To demonstrate the role of Na/K-ATPase signaling, we also performed the PNx surgery on Na/K-ATPase α1 heterozygous (α1+/-) mice, which expresses ~40% less Na/K-ATPase α1 compared to their wild type littermates (WT) and exhibits deficiency in Na/K-ATPase signaling...
2018: PloS One
https://www.readbyqxmd.com/read/29775428/the-involvement-of-human-monogenic-cardiomyopathy-genes-in-experimental-polygenic-cardiac-hypertrophy
#9
Priscilla R Prestes, Francine Z Marques, Guillermo Lopez-Campos, Paul Lewandowski, Lea M D Delbridge, Fadi J Charchar, Stephen B Harrap
Hypertrophic cardiomyopathy thickens heart muscles reducing functionality and increasing risk of cardiac disease and morbidity. Genetic factors are involved, but their contribution is poorly understood. We used the hypertrophic heart rat (HHR), a unique normotensive polygenic model of cardiac hypertrophy and heart failure to investigate the role of genes associated with monogenic human cardiomyopathy. We selected 42 genes involved in monogenic human cardiomyopathies to study: 1) DNA variants, by sequencing the whole-genome of 13-week old HHR and age-matched normal heart rat (NHR), its genetic control strain; 2) mRNA expression, by targeted RNA-sequencing in left ventricles of HHR and NHR at five ages (2-days old, 4-, 13-, 33- and 50-weeks old) compared to human idiopathic dilated data; and 3) microRNA expression, with rat microRNA microarrays in left ventricles of 2-days old HHR and age-matched NHR...
May 18, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29774065/catalytic-hairpin-assembly-gel-assay-for-multiple-and-sensitive-microrna-detection
#10
Wenhao Dai, Jing Zhang, Xiangdan Meng, Jie He, Kai Zhang, Yu Cao, Dongdong Wang, Haifeng Dong, Xueji Zhang
As important modulators of gene expression, microRNAs (miRNAs) have been identified as promising biomarkers with powerful predictive value in diagnosis and prognosis for several diseases, especially for cancers. Here we report a facile, multiple and sensitive miRNA detection method that uses conventional gel electrophoresis and catalytic hairpin assembly (CHA) system without any complex nanomaterials or enzymatic amplification. Methods: In this study, three pairs of hairpin probes are rationally designed with thermodynamically and kinetically preferable feasibility for the CHA process...
2018: Theranostics
https://www.readbyqxmd.com/read/29773833/transcriptome-and-mirna-analyses-of-the-response-to-corynespora-cassiicola-in-cucumber
#11
Xiangyu Wang, Di Zhang, Na Cui, Yang Yu, Guangchao Yu, Haiyan Fan
Cucumber (Cucumis sativus L.) target leaf spot (TLS), which is caused by the fungus Corynespora cassiicola (C. cassiicola), seriously endangers the production of cucumber. In this assay, we performed comprehensive sequencing of the transcriptome and microRNAs (miRNAs) of a resistant cucumber (Jinyou 38) during C. cassiicola inoculation using the Illumina NextSeq 500 platform. The possible genes related to the response to C. cassiicola were associated with plant hormones, transcription factors, primary metabolism, Ca2+ signaling pathways, secondary metabolism and defense genes...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29772439/long-noncoding-rna-meg3-inhibits-proliferation-of-chronic-myeloid-leukemia-cells-by-sponging-microrna21
#12
Ziye Li, Lin Yang, Xiaojun Liu, Ziyuan Nie, Jianmin Luo
The long noncoding RNA (lnc) maternally expressed 3 (MEG3) is downregulated in many types of cancers. However, the relationship between lncRNA MEG3, microRNA-21 (miR-21) and chronic myeloid leukemia (CML) blast crisis is unknown. This study examined bone marrow samples from 40 CML patients and 10 healthy donors. Proliferation and apoptosis assays, real-time polymerase chain reaction (PCR), bisulfite sequencing PCR, Western blotting, luciferase assay, RNA pull-down, RNA immunoprecipitation (RIP), co-immunoprecipitation (CoIP) and Chromatin immunoprecipitation (ChIP) were performed...
May 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29772263/comparative-analysis-of-microrna-expression-in-dog-lungs-infected-with-the-h3n2-and-h5n1-canine-influenza-viruses
#13
Yun Zheng, Xinliang Fu, Lifang Wang, Wenyan Zhang, Pei Zhou, Xin Zhang, Weijie Zeng, Jidang Chen, Zongxi Cao, Kun Jia, Shoujun Li
MicroRNAs, a class of noncoding RNAs 18 to 23 nucleotides (nt) in length, play critical roles in a wide variety of biological processes. The objective of this study was to examine differences in microRNA expression profiles derived from the lungs of beagle dogs infected with the avian-origin H3N2 canine influenza virus (CIV) or the highly pathogenic avian influenza (HPAI) H5N1 virus (canine-origin isolation strain). After dogs were infected with H3N2 or H5N1, microRNA expression in the lungs was assessed using a deep-sequencing approach...
May 14, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29769341/mutational-analysis-of-the-bovine-hepacivirus-internal-ribosome-entry-site
#14
A L Baron, A Schoeniger, P Becher, C Baechlein
In recent years, hepatitis C virus (HCV)-related viruses were identified in several species including dogs, horses, bats and rodents. Additionally, a novel virus of the genus Hepacivirus has been discovered in bovine samples and was termed bovine hepacivirus (BovHepV). Prediction of the BovHepV IRES (internal ribosome entry site) structure revealed strong similarities to the HCV IRES structure comprising domains II, IIIabcde, pseudoknot IIIf and domain IV with the initiation codon AUG. Unlike HCV, only one microRNA-122 (miR-122) binding site could be identified in the BovHepV 5' NTR...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769273/genome-wide-posttranscriptional-dysregulation-by-micrornas-in-human-asthma-as-revealed-by-frac-seq
#15
Rocio T Martinez-Nunez, Hitasha Rupani, Manuela Platé, Mahesan Niranjan, Rachel C Chambers, Peter H Howarth, Tilman Sanchez-Elsner
MicroRNAs are small noncoding RNAs that inhibit gene expression posttranscriptionally, implicated in virtually all biological processes. Although the effect of individual microRNAs is generally studied, the genome-wide role of multiple microRNAs is less investigated. We assessed paired genome-wide expression of microRNAs with total (cytoplasmic) and translational (polyribosome-bound) mRNA levels employing subcellular fractionation and RNA sequencing (Frac-seq) in human primary bronchoepithelium from healthy controls and severe asthmatics...
May 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29767362/microrna-expression-analysis-next-generation-sequencing
#16
Poching Liu
MicroRNAs are a class of small noncoding RNAs that function as regulators involving in many biological processes. The evaluation of miRNAs and their targets has been aided by miRNA expression profiling studies including multiplex PCR, microarrays, and recent next-generation sequencing tools. Next-generation sequencing has enabled us to profile thousands of genes in a single experiment and overcome the background signal and cross-hybridization issues of microarrays. Next-generation sequencing also allows for the simultaneous confirmation of known miRNAs and discovery of new miRNAs, and significantly reduces costs while providing billions of nucleotide information within a single experiment...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29767230/competing-endogenous-rna-regulatory-network-in-papillary-thyroid-carcinoma
#17
Shouhua Chen, Xiaobin Fan, He Gu, Lili Zhang, Wenhua Zhao
The present study aimed to screen all types of RNAs involved in the development of papillary thyroid carcinoma (PTC). RNA‑sequencing data of PTC and normal samples were used for screening differentially expressed (DE) microRNAs (DE‑miRNAs), long non‑coding RNAs (DE‑lncRNAs) and genes (DEGs). Subsequently, lncRNA‑miRNA, miRNA‑gene (that is, miRNA‑mRNA) and gene‑gene interaction pairs were extracted and used to construct regulatory networks. Feature genes in the miRNA‑mRNA network were identified by topological analysis and recursive feature elimination analysis...
May 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29766833/human-micrornas-expression-profiles-in-influenza-b-virus-infected-cells-based-on-illumina-miseq-platform
#18
Kritsada Khongnomnan, Witthaya Poomipak, Kesmanee Praianantathavorn, Suthat Sangchuwong, Trairak Pisitkun, Yong Poovorawan, Sunchai Payungporn
BACKGROUND: Influenza B virus causes influenza-like illness in humans. MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression through mRNA degradation or translational repression. MiRNAs have evolved to regulate many cellular processes including the viral infection response. OBJECTIVE: This study aims to investigate the miRNA profiles of human cells infected with influenza B virus. METHODS: A549 cells were infected with influenza B viruses (MOI = 0...
May 14, 2018: MicroRNA
https://www.readbyqxmd.com/read/29766503/transcriptome-analysis-of-potential-mirna-involved-in-adipogenic-differentiation-of-c2c12-myoblasts
#19
Ye Hou, Liangliang Fu, Jingjin Li, Jingxuan Li, Yunxia Zhao, Yu Luan, An Liu, Huiying Liu, Xinyun Li, Shuhong Zhao, Changchun Li
>Emerging evidence indicates that microRNA (miRNA) plays an important role in adipogenesis and disease pathogenesis. To investigate the miRNA involved in regulating different periods of adipogenesis, we performed a comprehensive study on microRNAome during the stimulation of adipogenesis by an adipogenic differentiation cocktail in C2C12 myoblasts at 0, 2, 4, and 7 days using the Solexa sequencing technology. In this study, we identified 52 differentially expressed (DE) miRNA. Functional annotation indicated that the target genes of DE miRNA were mostly enriched in adipogenic transdifferentiation and fat metabolism-related pathways, including Wnt, mitogen-activated protein kinase (MAPK), and insulin signaling...
May 16, 2018: Lipids
https://www.readbyqxmd.com/read/29765562/a-myriad-of-roles-of-mir-25-in-health-and-disease
#20
REVIEW
Márta Sárközy, Zsuzsanna Kahán, Tamás Csont
Small non-coding RNAs including microRNAs (miRNAs) have been recently recognized as important regulators of gene expression. MicroRNAs play myriads of roles in physiological processes as well as in the pathogenesis of a number of diseases by translational repression or mRNA destabilization of numerous target genes. The miR-106b-25 cluster is highly conserved in vertebrates and consists of three members including miR-106b, miR-93 and miR-25. MiR-106b and miR-93 share the same seed sequences; however, miR-25 has only a similar seed sequence resulting in different predicted target mRNAs...
April 20, 2018: Oncotarget
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