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https://www.readbyqxmd.com/read/29121070/identification-and-characterization-of-intestine-micrornas-and-targets-in-red-swamp-crayfish-procambarus-clarkii-infected-with-white-spot-syndrome-virus
#1
Zhi-Qiang Du, Kai Wang, Xiu-Li Shen, Yan-Hui Jin, Hai-Xia Jin, Xin-Cang Li
MicroRNAs (miRNAs) are small non-coding endogenous RNA molecules that play important roles in the innate immunity system of invertebrates, especially in the aspect of antivirus. In the present study, high-throughput small RNA Illumina sequencing systems were used to identify differentially expressed miRNAs (DEMs) from the intestines of Procambarus clarkii that were infected with white spot syndrome virus (WSSV). As a result, 39 known and 12 novel miRNAs were identified in both NG and WG small RNA libraries...
2017: PloS One
https://www.readbyqxmd.com/read/29116593/human-cytomegalovirus-mir-us5-1-inhibits-viral-replication-by-targeting-geminin-mrna
#2
Shujuan Jiang, Yujing Huang, Ying Qi, Rong He, Zhongyang Liu, Yanping Ma, Xin Guo, Yaozhong Shao, Zhengrong Sun, Qiang Ruan
Viruses commonly create favorable cellular conditions for their survival through multiple mechanisms. MicroRNAs (miRNAs), which function as post-transcriptional regulators, are utilized by human cytomegalovirus (HCMV) in its infection and pathogenesis. In the present study, the DNA replication inhibitor Geminin (GMNN) was identified to be a direct target of hcmv-miR-US5-1. Overexpression of hcmv-miR-US5-1 could block the accumulation of GMNN during HCMV infection, and the decrease of GMNN expression caused by hcmv-miR-US5-1 or GMNN specific siRNA reduced HCMV DNA copies in U373 cells...
October 2017: Virologica Sinica
https://www.readbyqxmd.com/read/29115540/microrna-326-inhibits-melanoma-progression-by-targeting-kras-and-suppressing-the-akt-and-erk-signalling-pathways
#3
Kang Kang, Jing Zhang, Xiaoyun Zhang, Zhao Chen
Melanoma is the seventh most common malignancy in females and the fifth most common cancer in males worldwide. An increasing number of studies have reported that microRNA (miRNA) dysregulation is frequently observed in various types of human cancers, including melanoma. Abnormally expressed miRNAs play an important role in melanoma formation and progression by serving as potential biomarkers and therapeutic targets. Recently, miRNA-326 (miR-326) has been reported to be differentially expressed in various types of tissues and play important roles in tumourigenesis and tumour development...
November 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29104494/pathogenic-role-of-exosomes-in-epstein-barr-virus-ebv-associated-cancers
#4
REVIEW
Sin-Yeang Teow, Kitson Liew, Alan Soo-Beng Khoo, Suat-Cheng Peh
Exosomes are 40- to 100-nm membrane-bound small vesicles that carry a great variety of cellular cargoes including proteins, DNA, messenger RNAs (mRNAs), and microRNAs (miRNAs). These nanovesicles are detected in various biological fluids such as serum, urine, saliva, and seminal fluids. Exosomes serve as key mediators in intercellular communication by facilitating the transfer and exchange of cellular components from cells to cells. They contain various pathogenic factors whereby their adverse effects have been implicated in multiple viral infections and cancers...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29101066/regulation-and-biological-roles-of-the-multifaceted-mirna-23b-mir23b
#5
REVIEW
Wei Wang, Yuji Wang, Weijun Liu, Andre J van Wijnen
MicroRNAs (miRNAs) are important short endogenous non-coding RNAs that have critical biological roles by acting as post-transcriptional regulators of gene expression. Chromosomal region 9q22.32 encodes the miR-23b/27b/24-1 cluster and produces miR-23b, which is a pleiotropic modulator in many developmental processes and pathological conditions. Expression of miR-23b is actively suppressed and induced in response to many different stimuli. We discuss the biological functions and transcriptional regulation of this multifaceted miRNA in different tumor types, during development, upon viral infection, as well as in various clinical disorders, immune responses, as well as cardiovascular and thyroid functions...
October 31, 2017: Gene
https://www.readbyqxmd.com/read/29096746/overexpression-of-microrna-133b-reduces-myocardial-injuries-in-children-with-viral-myocarditis-by-targeting-rab27b-gene
#6
Y Zhang, L Sun, H Sun, X Liu, X Luo, C Li, D Sun, T Li
The present study is to measure the expression of microRNA (miRNA or miR)-133b in circulating blood of children with viral myocarditis before and after drug treatment, and to investigate its relationship with the severity of myocardial lesions. A total of 36 children patients with viral myocarditis who received treatments at our hospital between June 2014 and June 2016 were enrolled in the present study, including 21 boys and 15 girls (age range, 9 months - 16 years).Quantitative real-time polymerase chain reaction was used to determine the expression of miR-133b in peripheral blood of patients and cardiomyocytes infected with CVB3...
October 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29096160/mmtv-does-not-encode-viral-micrornas-but-alters-the-levels-of-cancer-associated-host-micrornas
#7
Rodney P Kincaid, Neena G Panicker, Mary M Lozano, Christopher S Sullivan, Jaquelin P Dudley, Farah Mustafa
Mouse mammary tumor virus (MMTV) induces breast cancer in mice in the absence of known virally-encoded oncogenes. Tumorigenesis by MMTV is thought to occur primarily through insertional mutagenesis, leading to the activation of cellular proto-oncogenes and outgrowth of selected cells. Here we investigated whether MMTV encodes microRNAs (miRNAs) and/or modulates host miRNAs that could contribute to tumorigenesis. High throughput small RNA sequencing analysis of MMTV-infected cells and MMTV-induced mammary tumors demonstrates that MMTV does not encode miRNAs...
October 30, 2017: Virology
https://www.readbyqxmd.com/read/29093090/inducible-microrna-3570-feedback-inhibits-the-rig-i-dependent-innate-immune-response-to-rhabdovirus-in-teleost-fish-by-targeting-mavs-ips-1
#8
Tianjun Xu, Qing Chu, Junxia Cui, Dekun Bi
Effectively recognizing invading viruses and subsequently inducing the innate antiviral immunity are essential for the host antiviral defense. Although these processes are closely regulated by the host to maintain the immune balance, viruses have evolved the abilities to downregulate or upregulate these processes for their survival. MicroRNAs (miRNAs) are a family of small non-coding RNAs that play vital roles in modulating host immune response. Accumulating evidence demonstrates that host miRNAs as mediators are involved in regulating viral replication and host anti-viral immunity in mammals...
November 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29075279/antiviral-roles-of-abscisic-acid-in-plants
#9
REVIEW
Mazen Alazem, Na-Sheng Lin
Abscisic acid (ABA) is a key hormone involved in tuning responses to several abiotic stresses and also has remarkable impacts on plant defense against various pathogens. The roles of ABA in plant defense against bacteria and fungi are multifaceted, inducing or reducing defense responses depending on its time of action. However, ABA induces different resistance mechanisms to viruses regardless of the induction time. Recent studies have linked ABA to the antiviral silencing pathway, which interferes with virus accumulation, and the micro RNA (miRNA) pathway through which ABA affects the maturation and stability of miRNAs...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29062054/integrated-analysis-of-mrna-and-viral-mirnas-in-the-kidney-of-carassius-auratus-gibelio-response-to-cyprinid-herpesvirus-2
#10
Jianfei Lu, Dan Xu, Yousheng Jiang, Shanyun Kong, Zhaoyuan Shen, Siyao Xia, Liqun Lu
MicroRNAs (miRNAs) are small, non-coding single stranded RNAs that play crucial roles in numerous biological processes. Vertebrate herpesviruses encode multiple viral miRNAs that modulate host and viral genes. However, the roles of viral miRNAs in lower vertebrates have not been fully determined. Here, we used high-throughput sequencing to analyse the miRNA and mRNA expression profiles of Carassius auratus gibelio in response to infection by cyprinid herpesvirus 2 (CyHV-2). RNA sequencing obtained 26,664 assembled transcripts, including 2,912 differentially expressed genes...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29059163/molecular-genetics-and-cellular-events-of-k-ras-driven-tumorigenesis
#11
REVIEW
G G Jinesh, V Sambandam, S Vijayaraghavan, K Balaji, S Mukherjee
Cellular transformation and the accumulation of genomic instability are the two key events required for tumorigenesis. K-Ras (Kirsten-rat sarcoma viral oncogene homolog) is a prominent oncogene that has been proven to drive tumorigenesis. K-Ras also modulates numerous genetic regulatory mechanisms and forms a large tumorigenesis network. In this review, we track the genetic aspects of K-Ras signaling networks and assemble the sequence of cellular events that constitute the tumorigenesis process, such as regulation of K-Ras expression (which is influenced by miRNA, small nucleolar RNA and lncRNA), activation of K-Ras (mutations), generation of reactive oxygen species (ROS), induction of DNA damage and apoptosis, induction of DNA damage repair pathways and ROS detoxification systems, cellular transformation after apoptosis by the blebbishield emergency program and the accumulation of genomic/chromosomal instability that leads to tumorigenesis...
October 23, 2017: Oncogene
https://www.readbyqxmd.com/read/29053694/use-of-a-recombinant-mosquito-densovirus-as-a-gene-delivery-vector-for-the-functional-analysis-of-genes-in-mosquito-larvae
#12
Pei-Wen Liu, Jia-Bao Xu, Yun-Qiao Dong, Xiao-Guang Chen, Jin-Bao Gu
In vivo microinjection is the most commonly used gene transfer technique for analyzing the gene functions in individual mosquitoes. However, this method requires a more technically demanding operation and involves complicated procedures, especially when used in larvae due to their small size, relatively thin and fragile cuticle, and high mortality, which limit its application. In contrast, viral vectors for gene delivery have been developed to surmount extracellular and intracellular barriers. These systems have the advantages of easy manipulation, high gene transduction efficiency, long-term maintenance of gene expression, and the ability to produce persistent effects in vivo...
October 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29049413/microrna-expression-analysis-of-feline-and-canine-parvovirus-infection-in-vivo-felis
#13
Pei Zhou, Xin Zhang, Weijie Zeng, Qingxu Zheng, Xiangqi Hao, Xi Lin, Yun Zheng, Lifang Wang, Guihong Zhang, Shoujun Li
Feline panleukopenia is a common contagious disease with high morbidity and mortality. At present, feline parvovirus (FPV) and canine parvovirus (CPV) variants are the pathogens of feline panleukopenia. Many studies have shown that miRNAs are involved in virus-host interactions. Nevertheless, miRNA expression profiling of FPV (original virus) or CPV-2b (new virus) in cats has not been reported. To investigate these profiles, three 10-week-old cats were orally inoculated with 106 TCID50 of the viruses (FPV and CPV-2b), and the jejunums of one cat in each group were sectioned for miRNA sequencing at 5 days post-inoculation (dpi)...
2017: PloS One
https://www.readbyqxmd.com/read/29046449/gga-mir-130b-suppresses-infectious-bursal-disease-virus-replication-via-targeting-the-viral-genome-and-cellular-socs5
#14
Mengjiao Fu, Bin Wang, Xiang Chen, Zhiyuan He, Yongqiang Wang, Xiaoqi Li, Hong Cao, Shijun J Zheng
MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post transcriptionally through silencing or degrading its targets, playing important roles in immune response. However, the role of miRNAs in host response against infectious bursal disease virus (IBDV) infection is not clear. In this study, we show that the expression of a series of miRNAs was significantly altered in DF-1 cells after infectious bursal disease virus (IBDV) infection. We found that gga-miR-130b inhibited IBDV replication via targeting the specific sequence of IBDV segment A and enhanced the expression of IFN-β by targeting Suppressors of Cytokine Signaling 5(SOCS5) in host cells...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29045406/microrna-profiling-of-human-primary-macrophages-exposed-to-dengue-virus-identifies-mirna-3614-5p-as-antiviral-and-regulator-of-adar1-expression
#15
Mayra Diosa-Toro, Liliana Echavarría-Consuegra, Jacky Flipse, Geysson Javier Fernández, Joost Kluiver, Anke van den Berg, Silvio Urcuqui-Inchima, Jolanda M Smit
BACKGROUND: Due to the high burden of dengue disease worldwide, a better understanding of the interactions between dengue virus (DENV) and its human host cells is of the utmost importance. Although microRNAs modulate the outcome of several viral infections, their contribution to DENV replication is poorly understood. METHODS AND PRINCIPAL FINDINGS: We investigated the microRNA expression profile of primary human macrophages challenged with DENV and deciphered the contribution of microRNAs to infection...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29041944/differential-expression-of-porcine-micrornas-in-african-swine-fever-virus-infected-pigs-a-proof-of-concept-study
#16
Fernando Núñez-Hernández, Lester Josué Pérez, Marta Muñoz, Gonzalo Vera, Francesc Accensi, Armand Sánchez, Fernando Rodríguez, José I Núñez
BACKGROUND: African swine fever (ASF) is a re-expanding devastating viral disease currently threatening the pig industry worldwide. MicroRNAs are a class of 17-25 nucleotide non- coding RNAs that have been shown to have critical functions in a wide variety of biological processes, such as cell differentiation, cell cycle regulation, carcinogenesis, apoptosis, regulation of immunity as well as in viral infections by cleavage or translational repression of mRNAs. Nevertheless, there is no information about miRNA expression in an ASFV infection...
October 17, 2017: Virology Journal
https://www.readbyqxmd.com/read/29017894/rotavirus-encoded-virus-like-small-rna-triggers-autophagy-by-targeting-igf1r-via-the-pi3k-akt-mtor-pathway
#17
Yan Zhou, Panpan Geng, Yalin Liu, Jinyuan Wu, Hongtu Qiao, Yuping Xie, Na Yin, Linlin Chen, Xiaochen Lin, Yang Liu, Shan Yi, Guangming Zhang, Hongjun Li, Maosheng Sun
Rotaviruses are double-stranded RNA viruses that are a major cause of viral diarrhea in infants. Examining virus-host cell interaction is important for elucidating mechanisms of virus proliferation in host cells. Viruses can create an environment that promotes their survival and self-proliferation by encoding miRNAs or miRNA-like molecules that target various host cell. However, it remains unclear whether RNA viruses encode viral miRNAs, and their regulation mechanisms are largely unknown. We previously performed deep sequencing analysis to investigate rotavirus-encoded miRNAs, and identified the small RNA molecule Chr17_1755, which we named RV-vsRNA1755...
October 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29017848/suppression-of-cotton-leaf-curl-disease-symptoms-in-gossypium-hirsutum-through-over-expression-of-host-encoded-mirnas
#18
Mohd Akmal, Mirza S Baig, Jawaid A Khan
Cotton leaf curl disease (CLCuD), a major factor resulting in the enormous yield losses in cotton crop, is caused by a distinct monopartite begomovirus in association with Cotton leaf curl Multan betasatellite (CLCuMB). Micro(mi)RNAs are known to regulate gene expression in eukaryotes, including antiviral defense in plants. In a previous study, we had computationally identified a set of cotton miRNAs, which were shown to have potential targets in the genomes of Cotton leaf curl Multan virus (CLCuMuV) and CLCuMB at multiple loci...
October 7, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28990284/the-oncogenic-role-of-epstein-barr-virus-encoded-micrornas-in-epstein-barr-virus-associated-gastric-carcinoma
#19
REVIEW
Jinglin Zhang, Tingting Huang, Yuhang Zhou, Alfred S L Cheng, Jun Yu, Ka Fai To, Wei Kang
Epstein-Barr virus (EBV) infection is detected in various epithelial malignancies, such as nasopharyngeal carcinoma (NPC) and gastric cancer (GC). EBV comprises some unique molecular features and encodes viral genes and microRNAs (miRNAs) by its own DNA sequence. EBV genes are required to maintain latency and contribute to oncogenic property. miRNAs encoded by EBV have been shown to contribute to initiation and progression of EBV-related malignancies. By a number of genomic profiling studies, some EBV miRNAs were confirmed to be highly expressed in EBV-associated gastric cancer (EBVaGC) samples and cell lines...
October 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28984054/rna-uridylation-a-key-posttranscriptional-modification-shaping-the-coding-and-noncoding-transcriptome
#20
REVIEW
Caroline De Almeida, Hélène Scheer, Hélène Zuber, Dominique Gagliardi
RNA uridylation is a potent and widespread posttranscriptional regulator of gene expression. RNA uridylation has been detected in a range of eukaryotes including trypanosomes, animals, plants, and fungi, but with the noticeable exception of budding yeast. Virtually all classes of eukaryotic RNAs can be uridylated and uridylation can also tag viral RNAs. The untemplated addition of a few uridines at the 3' end of a transcript can have a decisive impact on RNA's fate. In rare instances, uridylation is an intrinsic step in the maturation of noncoding RNAs like for the U6 spliceosomal RNA or mitochondrial guide RNAs in trypanosomes...
October 5, 2017: Wiley Interdisciplinary Reviews. RNA
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