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https://www.readbyqxmd.com/read/28449421/-the-role-of-micrornas-in-colorectal-cancer
#1
REVIEW
Sang Wook Kim
Colorectal cancer (CRC) is one of the leading causes of cancer related deaths in the world. Many oncogenes and tumor suppressor genes are involved in the development of CRC. MicroRNAs (miRNAs) are a class of small, non-coding, endogenous RNAs in animals and plants. Recent studies have shown that miRNAs are associated with the mediation process of tumorigenesis, including inflammation, cell cycle, stress response, differentiation, apoptosis, migration, and invasion in cancer. These miRNAs have been linked to the development of CRC and recently studied as new potential biomarkers in the diagnosis and treatment for CRC...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28448529/a-genome-wide-analysis-of-the-rna-guided-silencing-pathway-in-coffee-reveals-insights-into-its-regulatory-mechanisms
#2
Christiane Noronha Fernandes-Brum, Pâmela Marinho Rezende, Thales Henrique Cherubino Ribeiro, Raphael Ricon de Oliveira, Thaís Cunha de Sousa Cardoso, Laurence Rodrigues do Amaral, Matheus de Souza Gomes, Antonio Chalfun-Junior
microRNAs (miRNAs) are derived from self-complementary hairpin structures, while small-interfering RNAs (siRNAs) are derived from double-stranded RNA (dsRNA) or hairpin precursors. The core mechanism of sRNA production involves DICER-like (DCL) in processing the smallRNAs (sRNAs) and ARGONAUTE (AGO) as effectors of silencing, and siRNA biogenesis also involves action of RNA-Dependent RNA Polymerase (RDR), Pol IV and Pol V in biogenesis. Several other proteins interact with the core proteins to guide sRNA biogenesis, action, and turnover...
2017: PloS One
https://www.readbyqxmd.com/read/28447884/do-micrornas-play-a-role-in-the-activity-of-plant-based-vaccines
#3
Sergio Rosales-Mendoza, Jorge A Salazar-González
An important trend in vaccinology is the development of oral vaccines based on genetically modified plants. Areas covered: Several studies have suggested that dietary microRNAs from plants and other organisms are bioavailable upon oral ingestion exerting biological events in the host such as the modulation of gene expression in several cell types. Since oral plant-based vaccines rely on whole cells as vaccine delivery vehicles, miRNAs could play a role in the immunogenic activity of this type of vaccine. In the present report, this hypothesis is discussed under the light of recent evidence on the immunomodulatory activity exerted by miRNAs using in vitro and in vivo evaluations...
April 27, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28446918/microrna-and-transcription-factor-key-players-in-plant-regulatory-network
#4
REVIEW
Abdul F A Samad, Muhammad Sajad, Nazaruddin Nazaruddin, Izzat A Fauzi, Abdul M A Murad, Zamri Zainal, Ismanizan Ismail
Recent achievements in plant microRNA (miRNA), a large class of small and non-coding RNAs, are very exciting. A wide array of techniques involving forward genetic, molecular cloning, bioinformatic analysis, and the latest technology, deep sequencing have greatly advanced miRNA discovery. A tiny miRNA sequence has the ability to target single/multiple mRNA targets. Most of the miRNA targets are transcription factors (TFs) which have paramount importance in regulating the plant growth and development. Various families of TFs, which have regulated a range of regulatory networks, may assist plants to grow under normal and stress environmental conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28443119/parsing-the-regulatory-network-between-small-rnas-and-target-genes-in-ethylene-pathway-in-tomato
#5
Yunxiang Wang, Qing Wang, Lipu Gao, Benzhong Zhu, Zheng Ju, Yunbo Luo, Jinhua Zuo
Small RNAs are a class of short non-coding endogenous RNAs that play essential roles in many biological processes. Recent studies have reported that microRNAs (miRNAs) are also involved in ethylene signaling in plants. LeERF1 is one of the ethylene response factors (ERFs) in tomato that locates in the downstream of ethylene signal transduction pathway. To elucidate the intricate regulatory roles of small RNAs in ethylene signaling pathway in tomato, the deep sequencing and bioinformatics methods were combined to decipher the small RNAs landscape in wild and sense-/antisense-LeERF1 transgenic tomato fruits...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28443107/virus-based-microrna-silencing-and-overexpressing-in-common-wheat-triticum-aestivum-l
#6
Chao Jian, Ran Han, Qing Chi, Shijuan Wang, Meng Ma, Xiangli Liu, Huixian Zhao
MicroRNAs (miRNAs) are a class of endogenous small non-coding RNAs that arise from large RNA precursors with a stem-loop structure and play important roles in plant development and responses to environmental stress. Although a hundred and nineteen wheat miRNAs have been identified and registered in the miRBase (Release 21.0, June, 2014; http://www.mirbase.org), the functional characterization of these miRNAs in wheat growth and development is lagging due to lack of effective techniques to investigate endogenous miRNA functions in wheat...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28443105/identification-of-microrna-targets-of-capsicum-spp-using-mirtrans-a-trans-omics-approach
#7
Lu Zhang, Cheng Qin, Junpu Mei, Xiaocui Chen, Zhiming Wu, Xirong Luo, Jiaowen Cheng, Xiangqun Tang, Kailin Hu, Shuai C Li
The microRNA (miRNA) can regulate the transcripts that are involved in eukaryotic cell proliferation, differentiation, and metabolism. Especially for plants, our understanding of miRNA targets, is still limited. Early attempts of prediction on sequence alignments have been plagued by enormous false positives. It is helpful to improve target prediction specificity by incorporating the other data sources such as the dependency between miRNA and transcript expression or even cleaved transcripts by miRNA regulations, which are referred to as trans-omics data...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28438123/small-rna-sequencing-reveals-a-role-for-sugarcane-mirnas-and-their-targets-in-response-to-sporisorium-scitamineum-infection
#8
Yachun Su, Yuye Zhang, Ning Huang, Feng Liu, Weihua Su, Liping Xu, Waqar Ahmad, Qibin Wu, Jinlong Guo, Youxiong Que
BACKGROUND: Sugarcane smut caused by Sporisorium scitamineum leads to a significant reduction in cane yield and sucrose content. MicroRNAs (miRNAs) play an important role in regulating plant responses to biotic stress. The present study was the first to use two sugarcane genotypes, YA05-179 (smut-resistant) and ROC22 (smut-susceptible), to identify differentially expressed miRNAs in sugarcane challenged with S. scitamineum by using high-throughput sequencing. RESULTS: The predicted target gene number corresponding to known differentially expressed miRNAs in YA05-179 was less than that in ROC22, however most of them were in common...
April 24, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28428007/identification-and-characterization-of-two-rna-silencing-suppressors-encoded-by-ophioviruses
#9
Gabriel Robles Luna, Carina A Reyes, Eduardo J Peña, Eliana Ocolotobiche, Cecilia Baeza, Maria Belén Borniego, Richard Kormelink, María Laura García
Citrus psorosis virus and Mirafiori lettuce big-vein virus are two members of the genus Ophiovirus, family Ophioviridae. So far, how these viruses can interfere in the antiviral RNA silencing pathway is not known. In this study, using a local GFP silencing assay on Nicotiana benthamiana, the 24K-25K and the movement protein (MP) of both viruses were identified as RNA silencing suppressor proteins. Upon their co-expression with GFP in N. benthamiana 16c plants, the proteins also showed to suppress systemic RNA (GFP) silencing...
April 17, 2017: Virus Research
https://www.readbyqxmd.com/read/28427349/genome-wide-survey-of-mirnas-and-their-evolutionary-history-in-the-ascidian-halocynthia-roretzi
#10
Kai Wang, Christelle Dantec, Patrick Lemaire, Takeshi A Onuma, Hiroki Nishida
BACKGROUND: miRNAs play essential roles in the modulation of cellular functions via degradation and/or translation attenuation of target mRNAs. They have been surveyed in a single ascidian genus, Ciona. Recently, an annotated draft genome sequence for a distantly related ascidian, Halocynthia roretzi, has become available, but miRNAs in H. roretzi have not been previously studied. RESULTS: We report the prediction of 319 candidate H. roretzi miRNAs, obtained through three complementary methods...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28426683/genome-wide-identification-and-characterization-of-mirnaome-from-tomato-solanum-lycopersicum-roots-and-root-knot-nematode-meloidogyne-incognita-during-susceptible-interaction
#11
Pritam Kaur, Neha Shukla, Gopal Joshi, Cheeni VijayaKumar, Arun Jagannath, Manu Agarwal, Shailendra Goel, Amar Kumar
Root-knot nematodes (RKNs, Meloidogyne spp.) are the most damaging plant parasites causing severe losses to crop production. The present study reports genome-wide identification and characterization of both tomato and RKN miRNAs simultaneously from RKN-infected susceptible tomato roots using high-throughput sequencing technique. RNAseq data from 11 small RNA libraries derived from 5 disease development stages identified 281 novel miRNAs of tomato in addition to 52 conserved and 4 variants of conserved miRNAs...
2017: PloS One
https://www.readbyqxmd.com/read/28424721/mirna-and-degradome-sequencing-reveal-mirna-and-their-target-genes-that-may-mediate-shoot-growth-in-spur-type-mutant-yanfu-6
#12
Chunhui Song, Dong Zhang, Liwei Zheng, Jie Zhang, Baojuan Zhang, Wenwen Luo, Youmei Li, Guangfang Li, Juanjuan Ma, Mingyu Han
The spur-type growth habit in apple trees is characterized by short internodes, increased number of fruiting spurs, and compact growth that promotes flowering and facilitates management practices, such as pruning. The molecular mechanisms responsible for regulating spur-type growth have not been elucidated. In the present study, miRNAs and the expression of their potential target genes were evaluated in shoot tips of "Nagafu 2" (CF) and spur-type bud mutation "Yanfu 6" (YF). A total of 700 mature miRNAs were identified, including 202 known apple miRNAs and 498 potential novel miRNA candidates...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424710/identification-and-characterization-of-microrna319a-and-its-putative-target-gene-pvpcf5-in-the-bioenergy-grass-switchgrass-panicum-virgatum
#13
Qi Xie, Xue Liu, Yinbing Zhang, Jinfu Tang, Dedong Yin, Bo Fan, Lihuang Zhu, Liebao Han, Guilong Song, Dayong Li
Due to its high biomass yield, low environmental impact, and widespread adaptability to poor soils and harsh conditions, switchgrass (Panicum virgatum L.), a warm-region perennial herbaceous plant, has attracted much attention in recent years. However, little is known about microRNAs (miRNAs) and their functions in this bioenergy grass. Here, we identified and characterized a miRNA gene, Pvi-MIR319a, encoding microRNA319a in switchgrass. Transgenic rice lines generated by overexpressing the Pvi-MIR319a precursor gene exhibited broader leaves and delayed flowering compared with the control...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424705/contemporary-understanding-of-mirna-based-regulation-of-secondary-metabolites-biosynthesis-in-plants
#14
REVIEW
Om P Gupta, Suhas G Karkute, Sagar Banerjee, Nand L Meena, Anil Dahuja
Plant's secondary metabolites such as flavonoids, terpenoids, and alkaloids etc. are known for their role in the defense against various insects-pests of plants and for medicinal benefits in human. Due to the immense biological importance of these phytochemicals, understanding the regulation of their biosynthetic pathway is crucial. In the recent past, advancement in the molecular technologies has enabled us to better understand the proteins, enzymes, genes, etc. involved in the biosynthetic pathway of the secondary metabolites...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28422166/identification-and-characterization-of-mirnas-in-two-closely-related-c4-and-c3-species-of-cleome-by-high-throughput-sequencing
#15
Shuangcheng Gao, Wei Zhao, Xiang Li, Qingbo You, Xinjie Shen, Wei Guo, Shihua Wang, Guoan Shi, Zheng Liu, Yongqing Jiao
Cleome gynandra and Cleome hassleriana, which are C4 and C3 plants, respectively, are two species of Cleome. The close genetic relationship between C. gynandra and C. hassleriana provides advantages for discovering the differences in leaf development and physiological processes between C3 and C4 plants. MicroRNAs (miRNAs) are a class of important regulators of various biological processes. In this study, we investigate the differences in the characteristics of miRNAs between C. gynandra and C. hassleriana using high-throughput sequencing technology...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28419906/plant-hormone-signaling-in-flowering-an-epigenetic-point-of-view
#16
REVIEW
Gerardo Campos-Rivero, Pedro Osorio-Montalvo, Rafael Sánchez-Borges, Rosa Us-Camas, Fátima Duarte-Aké, Clelia De-la-Peña
Reproduction is one of the most important phases in an organism's lifecycle. In the case of angiosperm plants, flowering provides the major developmental transition from the vegetative to the reproductive stage, and requires genetic and epigenetic reprogramming to ensure the success of seed production. Flowering is regulated by a complex network of genes that integrate multiple environmental cues and endogenous signals so that flowering occurs at the right time; hormone regulation, signaling and homeostasis are very important in this process...
March 31, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28419088/the-snrk2-kinases-modulate-mirna-accumulation-in-arabidopsis
#17
Jun Yan, Pengcheng Wang, Bangshing Wang, Chuan-Chih Hsu, Kai Tang, Hairong Zhang, Yueh-Ju Hou, Yang Zhao, Qiming Wang, Chunzhao Zhao, Xiaohong Zhu, W Andy Tao, Jianming Li, Jian-Kang Zhu
MicroRNAs (miRNAs) regulate gene expression and play critical roles in growth and development as well as stress responses in eukaryotes. miRNA biogenesis in plants requires a processing complex that consists of the core components DICER-LIKE 1 (DCL1), SERRATE (SE) and HYPONASTIC LEAVES (HYL1). Here we show that inactivation of functionally redundant members of the SnRK2 kinases, which are the core components of abscisic acid (ABA) and osmotic stress signaling pathways, leads to reduction in miRNA accumulation under stress conditions...
April 18, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28414734/micrornas-as-reference-genes-for-quantitative-pcr-in-cotton
#18
Anna Karoline Silva Fausto, Tatiane da Franca Silva, Elisson Romanel, Maite F S Vaslin
Cotton (Gossypium hirsutum) is the most important non-food plant in the world. Studies concerning the fiber quality and plant fitness of cotton at molecular level depend on high sensitive and reproducible gene-expression assays. However, only a few reports have described genes suitable for normalizing gene expression data. In this study, we report for the first time that microRNAs (miRNAs) are reliable reference genes (RGs) for cotton gene expression normalization in quantitative real-time reverse transcription (RT)-PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28411083/overexpression-of-gma-mir1510a-b-suppresses-the-expression-of-a-nb-lrr-domain-gene-and-reduces-resistance-to-phytophthora-sojae
#19
Xiaoxia Cui, Qiang Yan, Shuping Gan, Dong Xue, Daolong Dou, Na Guo, Han Xing
MicroRNAs (miRNAs) are universal regulators that repress target gene expression in eukaryotes and play essential roles in plant immune responses. miRNAs were recently found to be involved in soybean and Phytophthora sojae interactions. Here, we screened miR1510, which was repressed in soybean during infection with P. sojae, indicating that it might be involved in soybean response to pathogens. To further uncover the roles of miRNAs in soybean, gma-miR1510a/b was overexpressed in the hairy roots of soybean using an Arabidopsis miR319a precursor as the backbone...
April 11, 2017: Gene
https://www.readbyqxmd.com/read/28407097/mircat2-accurate-prediction-of-plant-and-animal-micrornas-from-next-generation-sequencing-datasets
#20
Claudia Paicu, Irina Mohorianu, Matthew Stocks, Ping Xu, Aurore Coince, Martina Billmeier, Tamas Dalmay, Vincent Moulton, Simon Moxon
Motivation: MicroRNAs are a class of _21-22 nucleotide small RNAs which are excised from a stable hairpin-like secondary structure. They have important gene regulatory functions and are involved in many pathways including developmental timing, organogenesis and development in eukaryotes. There are several computational tools for miRNA detection from next-generation sequencing (NGS) datasets. However, many of these tools suffer from high false positive and false negative rates. Here we present a novel miRNA prediction algorithm, miRCat2...
April 12, 2017: Bioinformatics
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