keyword
MENU ▼
Read by QxMD icon Read
search

miRNA biogenesis

keyword
https://www.readbyqxmd.com/read/29138579/association-of-gemin4-gene-polymorphism-and-the-risk-of-cancer-a-meta-analysis
#1
Nan Wu, Xiaowei Zhang, Jinlong Tian, Shuang Yu, Ying Qiao
Gem-associated protein 4 (GEMIN4) gene is a key regulator for the miRNA biogenesis processes. Recent studies have demonstrated that some single-nucleotide polymorphisms (SNPs) in GEMIN4 gene are associated with the risk of cancer, but the results are still controversial. Therefore, we conducted a meta-analysis to analyze the association between three major SNPs (rs2740348, rs7813, and rs3744741) in the GEMIN4 gene and the risk of cancer. Relevant articles were searched in Web of Science, PubMed, Cochrane Library, Chinese Wan Fang, and Chinese National Knowledge Infrastructure databases...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29138420/expression-of-both-poly-r-c-binding-protein-1-pcbp1-and-mirna-3978-is-suppressed-in-peritoneal-gastric-cancer-metastasis
#2
Fu-Jian Ji, Yuan-Yu Wu, Zhe An, Xue-Song Liu, Jun-Nan Jiang, Fang-Fang Chen, Xue-Dong Fang
The expression of legumain which has been shown overexpressed in patients with metastatic gastric cancer is positively correlated to both disease progression and outcome, and negatively correlated to microRNA (miR)-3978 expression. The RNA-binding protein, poly r(C) binding protein 1 (PCBP1) was the most downregulated protein in the metastatic tissue specimens. Quantitative real-time PCR showed that PCBP1 expression is transcriptionally downregulated in peritoneal metastasis tissues. RNA immunoprecipitation experiments showed that PCBP1 and miR-3978 are sequestered in normal peritoneal tissue, but the complex is disrupted following metastatic progression...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29127290/ksrp-specifies-monocytic-and-granulocytic-differentiation-through-regulating-mir-129-biogenesis-and-runx1-expression
#3
Hongmei Zhao, Xiaoshuang Wang, Ping Yi, Yanmin Si, Puwen Tan, Jinrong He, Shan Yu, Yue Ren, Yanni Ma, Junwu Zhang, Dong Wang, Fang Wang, Jia Yu
RNA-binding proteins (RBPs) integrate the processing of RNAs into post-transcriptional gene regulation, but the direct contribution of them to myeloid cell specification is poorly understood. Here, we report the first global RBP transcriptomic analysis of myeloid differentiation by combining RNA-seq analysis with myeloid induction in CD34(+) hematopoietic progenitor cells. The downregulated expression of the KH-Type Splicing Regulatory Protein (KSRP) during monocytopoiesis and up-regulated expression during granulopoiesis suggests that KSRP has divergent roles during monocytic and granulocytic differentiation...
November 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/29126230/a-survey-of-software-tools-for-microrna-discovery-and-characterization-using-rna-seq
#4
Michele Bortolomeazzi, Enrico Gaffo, Stefania Bortoluzzi
Since the small RNA-sequencing (sRNA-seq) technology became available, it allowed the discovery of thousands new microRNAs (miRNAs) in humans and many other species, providing new data on these small RNAs (sRNAs) of high biological and translational relevance. MiRNA discovery has not yet reached saturation, even in the most studied model organisms, and many researchers are using sRNA-seq in studies with different aims in biomedicine, fundamental research and in applied animal sciences. We review several miRNA discovery and characterization software tools that implement different strategies, providing a useful guide for researchers to select the programs best suiting their study objectives and data...
November 6, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/29115582/passenger-strand-of-mir-145-3p-acts-as-a-tumor-suppressor-by-targeting-myo1b-in-head-and-neck-squamous-cell-carcinoma
#5
Yasutaka Yamada, Keiichi Koshizuka, Toyoyuki Hanazawa, Naoko Kikkawa, Atsushi Okato, Tetsuya Idichi, Takayuki Arai, Sho Sugawara, Koji Katada, Yoshitaka Okamoto, Naohiko Seki
Analysis of the microRNA (miRNA) expression signature of head and neck squamous cell carcinoma (HNSCC) based on RNA sequencing showed that dual strands of pre‑miR‑145 (miR‑145‑5p, guide strand; and miR‑145‑3p, passenger strand) were significantly reduced in cancer tissues. In miRNA biogenesis, passenger strands of miRNAs are degraded and have no biological activities in cells. The aims of this study were to investigate the functional significance of the passenger strand of miR‑145 and to identify miR‑145‑3p‑regulated oncogenic genes in HNSCC cells...
November 6, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29114080/a-role-for-the-f-box-protein-hawaiian-skirt-in-plant-microrna-function
#6
Patricia L M Lang, Michael D Christie, Ezgi S Dogan, Rebecca Schwab, Jörg Hagmann, Anna-Lena Van de Weyer, Detlef Weigel, Emanuele Scacchi
As regulators of gene expression in multicellular organisms, microRNAs (miRNAs) are crucial for growth and development. While a plethora of factors involved in their biogenesis and action in Arabidopsis thaliana has been described, these processes and their fine-tuning are not fully understood. Here, we used plants expressing an artificial miRNA target mimic (MIM) to screen for negative regulators of miR156. We identified a new mutant allele of the F-box gene HAWAIIAN SKIRT (HWS; At3G61590), hws-5, as a suppressor of the MIM156-induced developmental and molecular phenotypes...
November 7, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29114017/a-microrna-feedback-loop-regulates-global-microrna-abundance-during-aging
#7
Sachi Inukai, Zachary Pincus, Alexandre de Lencastre, Frank J Slack
Expression levels of many microRNAs (miRNAs) change during aging, notably declining globally in a number of organisms and tissues across taxa. However, little is known about the mechanisms or the biological relevance for this change. We investigated the network of genes that controls miRNA transcription and processing during C. elegans aging. We found that miRNA biogenesis genes are highly networked with transcription factors and aging-associated miRNAs. In particular, miR-71, known to influence lifespan and itself upregulated during aging, represses alg-1/Argonaute expression post-transcriptionally during aging...
November 7, 2017: RNA
https://www.readbyqxmd.com/read/29110598/sirt1-as-a-therapeutic-target-in-diabetic-complications
#8
Justyna Strycharz, Żaneta Rygielska, Ewa Świderska, Józef Drzewoski, Janusz Szemraj, Leszek Szmigiero, Agnieszka Śliwińska
Background SIRT1 is an epigenetic enzyme involved in histone and non-histone protein deacetylation. It acts primarily as a metabolic sensor, which responses to changing energy status by deacetylating crucial transcription factors and cofactors. In this way, SIRT1 regulates mitochondrial function and biogenesis, oxidative stress, inflammation, apoptosis and cellular senescence. Disturbance of all of these phenomena promotes the pathogenesis of diabetic complications. These disorders are inseparably connected with chronic hyperglycemia, which possesses a strong epigenetic determinant...
November 6, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29109067/the-insertion-in-the-double-stranded-rna-binding-domain-of-human-drosha-is-important-for-its-function
#9
Xiaoxiao Zhang, Peng Li, Jian Lin, Haochu Huang, Bin Yin, Yan Zeng
microRNAs (miRNAs) are first transcribed as long, primary transcripts, which are then processed by multiple enzymes and proteins to generate the single-stranded, approximately 22-nucleotide (nt)-long mature miRNAs. A critical step in animal miRNA biogenesis is the cleavage of primary miRNA transcripts (pri-miRNAs) to produce precursor miRNAs (pre-miRNAs) by the enzyme Drosha. How Drosha recognizes its substrates remains incompletely understood. In this study we constructed a series of human Drosha mutants and examined their enzymatic activities and interaction with RNAs...
November 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29108266/the-systemic-tumor-response-to-rnase-a-treatment-affects-the-expression-of-genes-involved-in-maintaining-cell-malignancy
#10
Nadezhda Mironova, Olga Patutina, Evgenyi Brenner, Alexander Kurilshikov, Valentin Vlassov, Marina Zenkova
Recently, pancreatic RNase A was shown to inhibit tumor and metastasis growth that accompanied by global alteration of miRNA profiles in the blood and tumor tissue (Mironova et al., 2013). Here, we performed a whole transcriptome analysis of murine Lewis lung carcinoma (LLC) after treatment of tumor-bearing mice with RNase A. We identified 966 differentially expressed transcripts in LLC tumors, of which 322 were upregulated and 644 were downregulated after RNase A treatment. Many of these genes are involved in signaling pathways that regulate energy metabolism, cell-growth promoting and transforming activity, modulation of the cancer microenvironment and extracellular matrix components, and cellular proliferation and differentiation...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29107738/extracellular-vesicles-released-from-mesenchymal-stromal-cells-stimulate-bone-growth-in-osteogenesis-imperfecta
#11
Satoru Otsuru, Laura Desbourdes, Adam J Guess, Ted J Hofmann, Theresa Relation, Takashi Kaito, Massimo Dominici, Masahiro Iwamoto, Edwin M Horwitz
BACKGROUND: Systemic infusion of mesenchymal stromal cells (MSCs) has been shown to induce acute acceleration of growth velocity in children with osteogenesis imperfecta (OI) despite minimal engraftment of infused MSCs in bones. Using an animal model of OI we have previously shown that MSC infusion stimulates chondrocyte proliferation in the growth plate and that this enhanced proliferation is also observed with infusion of MSC conditioned medium in lieu of MSCs, suggesting that bone growth is due to trophic effects of MSCs...
October 26, 2017: Cytotherapy
https://www.readbyqxmd.com/read/29099484/lin28b-and-mir-142-3p-regulate-neuronal-differentiation-by-modulating-staufen1-expression
#12
Younseo Oh, Jungyun Park, Jin-Il Kim, Mi-Yoon Chang, Sang-Hun Lee, Youl-Hee Cho, Jungwook Hwang
Staufen1 (STAU1) and Lin28B are RNA-binding proteins that are involved in neuronal differentiation as a function of post-transcriptional regulation. STAU1 triggers post-transcriptional regulation, including mRNA export, mRNA relocation, translation and mRNA decay. Lin28B also has multiple functions in miRNA biogenesis and the regulation of translation. Here, we examined the connection between STAU1 and Lin28B and found that Lin28B regulates the abundance of STAU1 mRNA via miRNA maturation. Decreases in the expression of both STAU1 and Lin28B were observed during neuronal differentiation...
November 3, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29050335/evidence-for-the-association-of-chromatin-and-microrna-regulation-in-the-human-genome
#13
Bang-Bao Tao, Xi-Qiang Liu, Wenhao Zhang, Shu Li, Dong Dong, Mang Xiao, Jun Zhong
Both microRNAs (miRNAs) and chromatin regulation play important roles in cellular processes and they function at different regulatory levels of transcription. Although efforts have been devoted to the investigation of miRNA and chromatin regulation, there's still no comprehensive work to illustrate their relationships due tothe lack of whole-genome wide datasets in different human cellular contexts. Based on the recently published large-scale epigenetic data, we examined the association between miRNA and epigenetic machinery...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29049738/a-genome-wide-scan-for-microrna-related-genetic-variants-associated-with-primary-open-angle-glaucoma
#14
Mohsen Ghanbari, Adriana I Iglesias, Henriët Springelkamp, Cornelia M van Duijn, M Arfan Ikram, Abbas Dehghan, Stefan J Erkeland, Caroline C W Klaver, Magda A Meester-Smoor
Purpose: To identify microRNAs (miRNAs) involved in primary open-angle glaucoma (POAG), using genetic data. MiRNAs are small noncoding RNAs that posttranscriptionally regulate gene expression. Genetic variants in miRNAs or miRNA-binding sites within gene 3'-untranslated regions (3'UTRs) are expected to affect miRNA function and contribute to disease risk. Methods: Data from the recent genome-wide association studies on intraocular pressure, vertical cup-to-disc ratio (VCDR), cupa area and disc area were used to investigate the association of miRNAs with POAG endophenotypes...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29048752/the-how-and-where-of-plant-micrornas
#15
REVIEW
Yu Yu, Tianran Jia, Xuemei Chen
Contents Summary I. II. III. IV. References SUMMARY: MicroRNAs (miRNAs) are small non-coding RNAs, of typically 20-24 nt, that regulate gene expression post-transcriptionally through sequence complementarity. Since the identification of the first miRNA, lin-4, in the nematode Caenorhabditis elegans in 1993, thousands of miRNAs have been discovered in animals and plants, and their regulatory roles in numerous biological processes have been uncovered. In plants, research efforts have established the major molecular framework of miRNA biogenesis and modes of action, and are beginning to elucidate the mechanisms of miRNA degradation...
October 19, 2017: New Phytologist
https://www.readbyqxmd.com/read/29045748/conserved-asymmetry-underpins-homodimerization-of-dicer-associated-double-stranded-rna-binding-proteins
#16
Alex Heyam, Claire E Coupland, Clément Dégut, Ruth A Haley, Nicola J Baxter, Leonhard Jakob, Pedro M Aguiar, Gunter Meister, Michael P Williamson, Dimitris Lagos, Michael J Plevin
Double-stranded RNA-binding domains (dsRBDs) are commonly found in modular proteins that interact with RNA. Two varieties of dsRBD exist: canonical Type A dsRBDs interact with dsRNA, while non-canonical Type B dsRBDs lack RNA-binding residues and instead interact with other proteins. In higher eukaryotes, the microRNA biogenesis enzyme Dicer forms a 1:1 association with a dsRNA-binding protein (dsRBP). Human Dicer associates with HIV TAR RNA-binding protein (TRBP) or protein activator of PKR (PACT), while Drosophila Dicer-1 associates with Loquacious (Loqs)...
October 17, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29042235/splicing-factors-as-regulators-of-mirna-biogenesis-links-to-human-disease
#17
REVIEW
Madara Ratnadiwakara, Monika Mohenska, Minna-Liisa Änkö
MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post-transcriptionally by fine-tuning mRNA levels and translation during development and in adult tissues. miRNAs are transcribed as parts of longer precursors that undergo multiple processing steps before the mature miRNAs reach their target mRNAs in the cytoplasm. In addition to Drosha/DGCR8 and Dicer that are the essential components of the miRNA processing pathway, a range of other RNA binding proteins have recently been implicated in miRNA biogenesis...
October 19, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29036355/design-and-implementation-of-a-synthetic-pre-mir-switch-for-controlling-mirna-biogenesis-in-mammals
#18
Janina Atanasov, Florian Groher, Julia E Weigand, Beatrix Suess
Synthetic RNA-based systems have increasingly been used for the regulation of eukaryotic gene expression. Due to their structural properties, riboregulators provide a convenient basis for the development of ligand-dependent controllable systems. Here, we demonstrate reversible conditional control of miRNA biogenesis with an aptamer domain as a sensing unit connected to a natural miRNA precursor for the first time. For the design of the pre-miR switch, we replaced the natural terminal loop with the TetR aptamer...
September 28, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036314/mirnovo-genome-free-prediction-of-micrornas-from-small-rna-sequencing-data-and-single-cells-using-decision-forests
#19
Dimitrios M Vitsios, Elissavet Kentepozidou, Leonor Quintais, Elia Benito-Gutiérrez, Stijn van Dongen, Matthew P Davis, Anton J Enright
The discovery of microRNAs (miRNAs) remains an important problem, particularly given the growth of high-throughput sequencing, cell sorting and single cell biology. While a large number of miRNAs have already been annotated, there may well be large numbers of miRNAs that are expressed in very particular cell types and remain elusive. Sequencing allows us to quickly and accurately identify the expression of known miRNAs from small RNA-Seq data. The biogenesis of miRNAs leads to very specific characteristics observed in their sequences...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29032146/microrna-single-polynucleotide-polymorphism-influences-on-microrna-biogenesis-and-mrna-target-specificity
#20
REVIEW
Jarosław Króliczewski, Aleksandra Sobolewska, Dawid Lejnowski, James F Collawn, Rafał Bartoszewski
microRNAs (miRNAs) are nowadays recognized as an essential component of gene regulatory networks. Furthermore, deregulation of miRNAs expression often contributes to human pathologies. Recently, a substantial number of single nucleotide polymorphism (SNPs) and rare mutations within pri-, pre- and mature miRNA sequences have been reported. These miRNA SNPs have often been associated with human disease. However, due to the complexity of miRNA biogenesis and the genome-wide functional effects of miRNAs, the determination of biological consequences of these miRNA SNPs remains challenging...
January 15, 2018: Gene
keyword
keyword
58510
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"