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https://www.readbyqxmd.com/read/29684857/microrna-449a-functions-as-a-tumor-suppressor-in-pancreatic-cancer-by-the-epigenetic-regulation-of-atdc-expression
#1
Feng Li, Jing Liang, Lu Bai
A growing body of evidence has suggested that microRNAs (miRNAs) play a pivotal role in the development and progression of pancreatic cancer. miRNA-449a (miR-449a) has attracted particular interest due to its critical role in regulating cancer biology in numerous cancer types. However, whether miR-449a is involved in the regulation of pancreatic cancer development and progression remains unknown. In this study, we aimed to investigate the expression pattern and potential biological function of miR-449a in pancreatic cancer...
April 20, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29684716/predicted-mirna-mrna-mediated-posttranscriptional-control-associated-with-differences-in-cervical-and-thoracic-thymus-function
#2
Amanda F Assis, Jie Li, Paula B Donate, Janaína A Dernowsek, Nancy R Manley, Geraldo A Passos
A secondary cervical thymus (CT) is present in the neck region in about 50% of human and mice. CT in mice is an independent and functional organ, which can be colonized by T lymphocyte progenitors and generate thymocytes that are selected by the T cell receptor repertoire following the positive and negative selection. However, CT and the main thoracic thymus (TT) have been shown in mice to have significant functional differences. In this study, we use transcriptional profiling to compare mRNA or miRNAs expression patterns in murine CT and TT...
April 20, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29684489/analysis-of-the-microrna-transcriptome-of-daphnia-pulex-during-aging
#3
Jiabao Hu, Chongyuan Lin, Mengdi Liu, Qiaoqiong Tong, Shanliang Xu, Danli Wang, Yunlong Zhao
Daphnia pulex is an important food organism that exhibits a particular mode of reproduction known as cyclical parthenogenesis (asexual) and sexual reproduction. Regulation of the aging process by microRNAs (miRNAs) is a research hotspot in miRNA studies. To investigate a possible role of miRNAs in regulating aging and senescence, we used Illumina HiSeq to sequence two miRNA libraries from 1-day-old (1d) and 25-day-old (25d) D. pulex specimens. In total, we obtained 11,218,097 clean reads and 28,569 unique miRNAs from 1d specimens and 11,819,106 clean reads and 44,709 unique miRNAs from 25d specimens...
April 20, 2018: Gene
https://www.readbyqxmd.com/read/29684207/the-number-of-titrated-microrna-species-dictates-cerna-regulation
#4
Hua-Sheng Chiu, María Rodríguez Martínez, Elena V Komissarova, David Llobet-Navas, Mukesh Bansal, Evan O Paull, José Silva, Xuerui Yang, Pavel Sumazin, Andrea Califano
microRNAs (miRNAs) play key roles in cancer, but their propensity to couple their targets as competing endogenous RNAs (ceRNAs) has only recently emerged. Multiple models have studied ceRNA regulation, but these models did not account for the effects of co-regulation by miRNAs with many targets. We modeled ceRNA and simulated its effects using established parameters for miRNA/mRNA interaction kinetics while accounting for co-regulation by multiple miRNAs with many targets. Our simulations suggested that co-regulation by many miRNA species is more likely to produce physiologically relevant context-independent couplings...
April 19, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29682806/biomarkers-for-heart-failure-small-molecules-with-high-clinical-relevance
#5
REVIEW
C Magnussen, S Blankenberg
Heart failure (HF) is a rising epidemic due to the ageing population and progress in all areas of medicine. Thus, research efforts are made to ensure a timely diagnosis, to improve prognosis and treatment of the disease and to facilitate risk prediction at the population level. Because of their noninvasive determination with mostly high sensitivity and accuracy, circulating blood biomarkers are becoming increasingly important for daily clinical practice. Natriuretic peptides, especially B-type natriuretic peptide (BNP), N-terminal pro-B-type natriuretic peptide (Nt-proBNP) and midregional pro-atrial natriuretic peptide (MR-proANP) and cardiac troponins are established blood biomarkers in HF diagnosis and prognosis of HF-related outcomes...
April 22, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29682564/profiling-and-bioinformatic-analyses-indicate-differential-circrna-and-mirna-isomir-expression-and-interactions
#6
Li Guo, Liang Zheng, Yang Zhao, Qianyun Wang
As a novel class of noncoding RNAs, circular RNAs (circRNAs) have been reported to play a role in various biological processes. Some circRNAs may serve as microRNA (miRNA) sponges, regulating transcription or splicing. Herein, we investigated the expression profiles and interactions of miRNAs/isomiRs and circRNAs in male patients with esophageal cancer. We found that some miRNA genes generated two deregulated miRNA products (miR-#-5p and miR-#-3p), and these products were consistently abnormally expressed. Some circRNAs were predicted to be miRNA sponges for specific miRNAs...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29682276/characterization-and-potential-role-of-microrna-in-the-chinese-dominant-malaria-mosquito-anopheles-sinensis-diptera-culicidae-throughout-four-different-life-stages
#7
Xinyu Feng, Jiatong Wu, Shuisen Zhou, Jingwen Wang, Wei Hu
Background: microRNAs (miRNAs) are one kind of small non-coding RNAs widely distributed in insects. Many studies have shown that miRNAs play critical roles in development, differentiation, apoptosis, and innate immunity. However, there are a few reports describing miRNAs in Anopheles sinensis , the most common, and one of the dominant malaria mosquito in China. Here, we investigated the global miRNA expression profile across four different developmental stages including embryo, larval, pupal, and adult stages using Illumina Hiseq 2500 sequencing...
2018: Cell & Bioscience
https://www.readbyqxmd.com/read/29682178/prognostic-value-of-circulating-micrornas-in-upper-tract-urinary-carcinoma
#8
Ruth Montalbo, Laura Izquierdo, Mercedes Ingelmo-Torres, Juan José Lozano, David Capitán, Antonio Alcaraz, Lourdes Mengual
The identification of upper tract urinary carcinoma (UTUC) prognostic biomarkers is urgently needed to predict tumour progression. This study aimed to identify serum microRNAs (miRNAs) that may be useful as minimally invasive predictive biomarkers of tumour progression and survival in UTUC patients. To this end, 33 UTUC patients who underwent radical nephroureterectomy at the Hospital Clinic of Barcelona were prospectively included. Expression of 800 miRNAs was evaluated in serum samples from these patients using nCounter® miRNA Expression Assays...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29681887/circulating-microrna-profile-as-a-potential-predictive-biomarker-for-early-diagnosis-of-spontaneous-abortion-in-patients-with-subclinical-hypothyroidism
#9
Yingying Zhou, Xinyi Wang, Yuanyuan Zhang, Tong Zhao, Zhongyan Shan, Weiping Teng
An increasing number of studies suggest that subclinical hypothyroidism (SCH) is associated with complications of gestation, including spontaneous abortion (SA). However, the underlying mechanism is not clear. MicroRNA (miRNA) has been demonstrated to be closely related to gynecological reproductive diseases. We determined miRNA expression in patients with SCH, SCH with SA (SCH + SA), and in those with SA as well as healthy controls (HCs), and analyzed whether dysregulation in several miRNAs was specific to these cohorts...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29681008/micromanaging-freeze-tolerance-the-biogenesis-and-regulation-of-neuroprotective-micrornas-in-frozen-brains
#10
Hanane Hadj-Moussa, Kenneth B Storey
When temperatures plummet below 0 °C, wood frogs (Rana sylvatica) can endure the freezing of up to ~ 65% of their body water in extracellular ice masses, displaying no measurable brain activity, no breathing, no movement, and a flat-lined heart. To aid survival, frogs retreat into a state of suspended animation characterized by global suppression of metabolic functions and reprioritization of energy usage to essential survival processes that is elicited, in part, by the regulatory controls of microRNAs...
April 21, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29679573/circrna-expression-analysis-in-lung-adenocarcinoma-comparison-of-paired-fresh-frozen-and-formalin-fixed-paraffin-embedded-specimens
#11
Fan Zhang, Xing Zhao, Hongyan Dong, Jianzhen Xu
Circular RNA (circRNAs) is a novel class of endogenous non-coding RNAs which is widely involved in carcinogenesis. Archived formalin-fixed paraffin-embedded (FFPE) specimens represent valuable resources for cancer research. Currently there is a lack of systematic analysis on the feasibility of circRNAs expression analysis using FFPE samples. Here, we reported the first comparison study of circRNA expression from paired fresh frozen and FFPE specimens of lung adenocarcinoma. circRNAs expression of paired lung adenocarcinoma and adjacent normal samples, starting from either fresh frozen or FFPE materials, were analyzed via a high-throughput circRNA microarray...
April 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29676073/overexpression-of-mir-155-5p-inhibits-the-proliferation-and-migration-of-il-13-induced-human-bronchial-smooth-muscle-cells-by-suppressing-tgf-%C3%AE-activated-kinase-1-map3k7-binding-protein-2
#12
Yujia Shi, Xingli Fu, Qi Cao, Zhengdao Mao, Yi Chen, Yun Sun, Zhiguang Liu, Qian Zhang
PURPOSE: Molecular mechanisms leading to asthma is still ill-defined. Though the function of microRNAs (miRNAs) in asthma was previously reported, the involvement of miR-155 in important features of this disease remains unknown. The present study was designed to uncover the probable involvement of miR-155-5p in the proliferation and migration of IL-13-induced human bronchial smooth muscle cells (BSMCs) and the intrinsic regulatory mechanism. METHODS: The effects of different concentrations of IL-13 on the proliferation and migration of BSMCs as well as the expression of miR-155-5p and its predicted target transforming growth factor (TGF)-β-activated kinase 1/MAP3K7-binding protein 2 (TAB2) were investigated...
May 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29675420/regulation-of-long-noncoding-rnas-responsive-to-phytoplasma-infection-in-paulownia-tomentosa
#13
Guoqiang Fan, Yabing Cao, Zhe Wang
Paulownia witches' broom caused by phytoplasma infection affects the production of Paulownia trees worldwide. Emerging evidence showed that long noncoding RNAs (lncRNA) play a protagonist role in regulating the expression of genes in plants. So far, the identification of lncRNAs has been limited to a few model plant species, and their roles in mediating responses to Paulownia tomentosa that free of phytoplasma infection are yet to be characterized. Here, whole-genome identification of lncRNAs, based on strand-specific RNA sequencing, from four Paulownia tomentosa samples, was performed and identified 3689 lncRNAs...
2018: International Journal of Genomics
https://www.readbyqxmd.com/read/29674246/a-microrna-expression-signature-of-the-postprandial-state-in-response-to-a-high-saturated-fat-challenge
#14
Sergio Lopez, Beatriz Bermudez, Sergio Montserrat-de la Paz, Rocio Abia, Francisco J G Muriana
The postprandial hypertriglyceridemia is an important and largely silent disturbance involved in the genesis of numerous pathological conditions. Exaggerated and prolonged states of postprandial hypertriglyceridemia are frequently related to the ingestion of meals enriched in saturated fatty acids (SFAs). MicroRNAs are noncoding RNAs that function as gene regulators and play significant roles in both health and disease. However, differential miRNA expression between fasting and postprandial states has never been elucidated...
March 18, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29674166/microrna-hsa-mir-19b-2-5p-targets-key-mitochondrial-biogenesis-genes-a-bioinformatics-analysis
#15
Sunil Kumar Saini, Ponnusamy Kalaiarasan, Rajnish Kumar Singh, Siddharth Manvati, R N K Bamezai
The present study on the basis of a detailed bioinformatics analysis proposed a potential role of a miRNA, hsa-miR-19b-2-5p, in regulating the mitochondrial biogenesis. The miRNA has shown to be involved in important biological processes of cellular metabolic, cellular macromolecule biosynthetic processes and gene expression pathways. The miRNA, hsa-miR-19b-2-5p, was predicted to regulate the molecular function of nucleic acid, organic/heterocyclic compound, nucleic acid binding transcription factor activity...
April 16, 2018: Mitochondrion
https://www.readbyqxmd.com/read/29670361/identification-of-molecular-target-genes-and-key-pathways-in-hepatocellular-carcinoma-by-bioinformatics-analysis
#16
Lei Zhou, Yanyan Du, Lingqun Kong, Xingyuan Zhang, Qiangpu Chen
Background and aim: Hepatocellular carcinoma (HCC) is a major cause of cancer mortality and is increasing incidence worldwide. The aim of this study was to identify the key genes and microRNAs in HCC and explore their potential mechanisms. Methods: The gene expression profiles of GSE76427, GSE64041, GSE57957, and the microRNA dataset GSE67882 were downloaded from the Gene Expression Omnibus database. The online tool GEO2R was used to obtain differentially expressed genes (DEGs) and miRNAs (DEMs)...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29669321/lncrna-expression-profile-of-human-thoracic-aortic-dissection-by-high-throughput-sequencing
#17
Jie Sun, Guojun Chen, Yuanwen Jing, Xiang He, Jianting Dong, Junmeng Zheng, Meisheng Zou, Hairui Li, Shifei Wang, Yili Sun, Wangjun Liao, Yulin Liao, Li Feng, Jianping Bin
BACKGROUND/AIMS: In this study, the long non-coding RNA (lncRNA) expression profile in human thoracic aortic dissection (TAD), a highly lethal cardiovascular disease, was investigated. METHODS: Human TAD (n=3) and normal aortic tissues (NA) (n=3) were examined by high-throughput sequencing. Bioinformatics analyses were performed to predict the roles of aberrantly expressed lncRNAs. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to validate the results...
April 13, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29667572/neurobiological-findings-associated-with-high-cognitive-performance-in-older-adults-a-systematic-review
#18
Wyllians Vendramini Borelli, Lucas Porcello Schilling, Graciane Radaelli, Luciana Borges Ferreira, Leonardo Pisani, Mirna Wetters Portuguez, Jaderson Costa da Costa
ABSTRACTObjectives:to perform a comprehensive literature review of studies on older adults with exceptional cognitive performance. DESIGN: We performed a systematic review using two major databases (MEDLINE and Web of Science) from January 2002 to November 2017. RESULTS: Quantitative analysis included nine of 4,457 studies and revealed that high-performing older adults have global preservation of the cortex, especially the anterior cingulate region, and hippocampal volumes larger than normal agers...
April 18, 2018: International Psychogeriatrics
https://www.readbyqxmd.com/read/29667551/circulating-mir-10a-as-predictor-of-therapy-response-in-rheumatoid-arthritis-patients-treated-with-methotrexate
#19
Honghai Hong, Haihui Yang, Yong Xia
BACKGROUND: Anti-inflammatory drugs and DMARDs, especially methotrexate, have dramatically improved the outlook of RA patient. However, in some patients the treatment effect is still not satisfactory and needs to change therapeutic regimen in time. So, prediction of patient treatment effect timely is particularly important. METHODS: miRNAs are a large family of highly conserved noncoding genes and some of them become potential biomarker of disease diagnosis. In present study, we found circulating miR-10a was significantly decreased in RA patients compared to osteoarthritic patients and healthy people...
April 17, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29667432/identification-and-characterisation-of-micrornas-and-piwi-interacting-rnas-in-cockerels-spermatozoa-by-solexa-sequencing
#20
Shengru Wu, Jiacheng Guo, Liqin Zhu, Jiantao Yang, Si Chen, Xiaojun Yang
1. There has been substantial research focused on the roles of microRNAs (miRNA) and PIWI-interacting RNAs (piRNA) delivered from mammalian spermatozoa, however comparatively little is known about the role of spermatozoa-delivered miRNAs and piRNAs within breeding cockerels' spermatozoa. 2. A small RNA library of cockerels' spermatozoa was constructed using Illumina high-throughput sequencing technology. Unique sequences with lengths of 18-26 nucleotides were mapped to miRBase 21.0 and unique sequences with lengths of 25-37 nucleotides were mapped to a piRNA database...
April 18, 2018: British Poultry Science
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