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miR-181a

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https://www.readbyqxmd.com/read/28986402/microrna-expression-profiles-and-type-1-diabetes-mellitus-systematic-review-and-bioinformatics-analysis
#1
Tais Silveira Assmann, Mariana Recamonde-Mendoza, Bianca M de Souza, Daisy Crispim
MicroRNAs (miRNAs) are small noncoding RNAs that negatively regulate gene expression. Growing evidence indicates that miRNAs have a key role in processes involved in type 1 diabetes mellitus (T1DM) pathogenesis, including immune system functions and beta-cell metabolism and death. Although dysregulated miRNA profiles have been identified in T1DM patients, results are inconclusive; with only few miRNAs being consistently dysregulated among studies. Thus, we performed a systematic review of the literature on the subject, followed by bioinformatics analysis, to point out which miRNAs are dysregulated in T1DM-related tissues and in which pathways they act...
October 6, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28981116/mir-181a-increases-foxo1-acetylation-and-promotes-granulosa-cell-apoptosis-via-sirt1-downregulation
#2
Mei Zhang, Qun Zhang, Yali Hu, Lu Xu, Yue Jiang, Chunxue Zhang, Lijun Ding, Ruiwei Jiang, Jianxin Sun, Haixiang Sun, Guijun Yan
Oxidative stress impairs follicular development by inducing granulosa cell (GC) apoptosis, which involves enhancement of the transcriptional activity of the pro-apoptotic factor Forkhead box O1 (FoxO1). However, the mechanism by which oxidative stress promotes FoxO1 activity is still unclear. Here, we found that miR-181a was upregulated in hydrogen peroxide (H2O2)-treated GCs and a 3-nitropropionic acid (NP)-induced in vivo model of ovarian oxidative stress. miR-181a overexpression promoted GC apoptosis, whereas knockdown of endogenous miR-181a blocked H2O2-induced cell apoptosis...
October 5, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28973148/a-constitutive-bcl2-down-regulation-aggravates-the-phenotype-of-pkd1-mutant-induced-polycystic-kidney-disease
#3
Laurence Duplomb, Nathalie Droin, Olivier Bouchot, Christel Robinet Thauvin, Ange-Line Bruel, Julien Thevenon, Patrick Callier, Guillaume Meurice, Noémie Pata-Merci, Romaric Loffroy, David Vandroux, Romain Da Costa, Virginie Carmignac, Eric Solary, Laurence Faivre
The main identified function of BCL2 protein is to prevent cell death by apoptosis. Mice knock-out for Bcl2 demonstrate growth retardation, severe polycystic kidney disease (PKD), gray hair and lymphopenia, and die prematurely after birth. Here, we report a 40-year-old male referred to for abdominal and thoracic aortic dissection with associated aortic root aneurysm, PKD, lymphocytopenia with a history of T cell lymphoblastic lymphoma, white hair since the age of 20, and learning difficulties. PKD, which was also detected in the father and sister, was related to an inherited PKD1 mutation...
September 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28968688/mir-181a-participates-in-contextual-fear-memory-formation-via-activating-mtor-signaling-pathway
#4
Xu-Feng Xu, Xu Jing, Hui-Xian Ma, Rong-Rong Yuan, Qing Dong, Jun-Lu Dong, Xiao-Fei Han, Zhe-Yu Chen, Xiang-Zhi Li, Yue Wang
Long-term memory formation has been proven to require gene expression and new protein synthesis. MicroRNAs (miRNAs), as an endogenous small non-coding RNAs, inhibit the expression of their mRNA targets, through which involve in new memory formation. In this study, elevated miR-181a levels were found to be responsible for hippocampal contextual fear memory consolidation. Using a luciferase reporter assay, we indicated that miR-181a targets 2 upstream molecules of mTOR pathway, namely, PRKAA1 and REDD1. Upregulated miR-181a can downregulate the PRKAA1 and REDD1 protein levels and promote mTOR activity to facilitate hippocampal fear memory consolidation...
August 22, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28960306/screening-the-expression-characteristics-of-several-mirnas-in-g93a-sod1-transgenic-mouse-altered-expression-of-mirna-124-is-associated-with-astrocyte-differentiation-by-targeting-sox2-and-sox9
#5
Fenghua Zhou, Caixia Zhang, Yingjun Guan, Yanchun Chen, Qiang Lu, Linlin Jie, Hailing Gao, Hongmei Du, Haoyun Zhang, Yongxin Liu, Xin Wang
MicroRNAs (miRNAs) are suspected to be a contributing factor in amyotrophic lateral sclerosis (ALS). Here, we assess the altered expression of miRNAs and the effects of miR-124 in astrocytic differentiation in neural stem cells of ALS transgenic mice. Differentially expressed miRNA-positive cells (including miR-124, miR-181a, miR-22, miR-26b, miR-34a, miR-146a, miR-219, miR-21, miR-200a, and miR-320) were detected by ISH and qRT-PCR in the spinal cord and the brain stem. Studies demonstrated that miR-124 was downregulated in the spinal cord and brain stem...
September 28, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28951723/microvesicles-derived-from-indoxyl-sulfate-treated-endothelial-cells-induce-endothelial-progenitor-cells-dysfunction
#6
Andres Carmona, Fatima Guerrero, Paula Buendia, Teresa Obrero, Pedro Aljama, Julia Carracedo
Cardiovascular disease is a major cause of mortality in chronic kidney disease patients. Indoxyl sulfate (IS) is a typical protein-bound uremic toxin that cannot be effectively cleared by conventional dialysis. Increased IS is associated with the progression of chronic kidney disease and development of cardiovascular disease. After endothelial activation by IS, cells release endothelial microvesicles (EMV) that can induce endothelial dysfunction. We developed an in vitro model of endothelial damage mediated by IS to evaluate the functional effect of EMV on the endothelial repair process developed by endothelial progenitor cells (EPCs)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28947753/tnf-%C3%AE-mrna-is-negatively-regulated-by-microrna-181a-5p-in-maturation-of-dendritic-cells-induced-by-high-mobility-group-box-1-protein
#7
Jing Zhu, Fu-Li Wang, Hai-Bin Wang, Ning Dong, Xiao-Mei Zhu, Yao Wu, Yong-Tao Wang, Yong-Ming Yao
Dendritic cell (DC) can be stimulated by both exogenous pathogen-associated molecular patterns (PAMPs) such as lipopolysaccharide (LPS) and endogenous damage-associated molecular patterns (DAMPs) such as high mobility group box-1 protein (HMGB1). MicroRNAs (miRNAs) act as post-transcriptional fine tuners of mRNA. Studies have focused mostly on the potential role of miRNAs in DCs maturation triggered by PAMPs, especially LPS, however, little is known about the regulatory mechanism underlying the effects of miRNAs in DC maturation mediated by DAMPs, including HMGB1...
September 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28946554/mir-181a-inhibits-non-small-cell-lung-cancer-cell-proliferation-by-targeting-cdk1
#8
Qin Shi, Zhan Zhou, Naishu Ye, Qiaolin Chen, Xiuxia Zheng, Minshan Fang
BACKGROUND: MicroRNAs (miRNAs) emerge as important regulators involved in malignant progression in some tumors. MiR-181a has been found to function as a tumor suppressor in some tumors including non-small cell lung cancer (NSCLC). However, the functional role of miR-181a in NSCLC still needed to be investigated. METHODS: The expression of miR-181a were determined by qRT-PCR, the association between miR-181a and clinicopathological data were performed by chi-square test and survival analysis were evaluated by Kaplan-Meier curve and log rank test...
September 8, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28931048/mir-181a-decelerates-proliferation-in-cutaneous-squamous-cell-carcinoma-by-targeting-the-proto-oncogene-kras
#9
Johannes Neu, Piotr Jan Dziunycz, Andreas Dzung, Karine Lefort, Martin Falke, Rémy Denzler, Sandra Nicole Freiberger, Guergana Iotzova-Weiss, Aleksandar Kuzmanov, Mitchell Paul Levesque, Gian-Paolo Dotto, Günther Franz L Hofbauer
Cutaneous squamous cell carcinoma (SCC) is the second most common human skin cancer with a rapidly increasing incidence among the Caucasian population. Among the many regulators, responsible for cancer progression and growth, microRNAs (miRNA) are generally accepted as key players by now. In our current study we found that microRNA-181a (miR-181a) shows low abundance in SCC compared to normal epidermal skin. In vitro, miRNA downregulation in normal primary keratinocytes induced increased proliferation, while in vivo miR-181a downregulation in HaCaT normal keratinocytes showed tumor-like growth increase up to 50%...
2017: PloS One
https://www.readbyqxmd.com/read/28930552/microrna-181a-inhibits-autophagy-by-targeting-atg5-in-hepatocellular-carcinoma
#10
Jun Yang, Youzhao He, Niankuan Zhai, Sheng Ding, Jianping Li, Zhihai Peng
Available evidence suggests that autophagy may serve as a tumor suppressor in cases of chronic liver disease and liver cirrhosis and that autophagic deficiency may lead to hepatocellular carcinoma (HCC). Recent studies suggested that the development of several tumor types could be regulated by microRNA-181a. However, the role of miR-181a in the autophagy of HCC remains unclear. In this study, we aimed to investigate the role of miR-181a in the autophagy of HCC. We found that the mRNA expression of miR-181a is higher but the level of autophagy is lower in human HCC compared to normal liver tissue...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28926935/identification-of-circulating-mirnas-differentially-regulated-by-opioid-treatment
#11
Kaoru Toyama, Naoki Kiyosawa, Kenji Watanabe, Hitoshi Ishizuka
Emerging evidence demonstrates functional contributions of microRNAs (miRNAs) to μ-opioid receptor (MOR) signaling, but the information so far has been mostly limited to their intracellular regulatory mechanisms. The present study aimed to investigate changes in plasma miRNA profiles elicited by opioid treatment in blood samples collected from clinical studies. Healthy male subjects were orally administered with hydromorphone or oxycodone and blood samples were collected at a specified time after the drug treatment...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28924375/lncrna-afap1-as-functions-as-a-competing-endogenous-rna-to-regulate-rap1b-expression-by-sponging-mir-181a-in-the-hscr
#12
Guanglin Chen, Lei Peng, Zhongxian Zhu, Chunxia Du, Ziyang Shen, Rujin Zang, Yang Su, Yankai Xia, Weibing Tang
Background: Long noncoding RNAs (lncRNAs) have recently emerged as important regulators in a broad spectrum of cellular processes including development and disease. Despite the known engagement of the AFAP1-AS in several human diseases, its biological function in Hirschsprung disease (HSCR) remains elusive. Methods: We used qRT-PCR to detect the relative expression of AFAP1-AS in 64 HSCR bowel tissues and matched normal intestinal tissues. The effects of AFAP1-AS on cell proliferation, migration, cell cycle, apoptosis and cytoskeletal organization were evaluated using CCK-8, transwell assay, flow cytometer analysis and immunofluorescence, in 293T and SH-SY5Y cell lines, respectively...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28903352/analysis-of-bos-taurus-and-sus-scrofa-x-and-y-chromosome-transcriptome-highlights-reproductive-driver-genes
#13
Faheem Ahmed Khan, Hui Liu, Hao Zhou, Kai Wang, Muhammad Tahir Ul Qamar, Nuruliarizki Shinta Pandupuspitasari, Zhang Shujun
The biology of sperm, its capability of fertilizing an egg and its role in sex ratio are the major biological questions in reproductive biology. To answer these question we integrated X and Y chromosome transcriptome across different species: Bos taurus and Sus scrofa and identified reproductive driver genes based on Weighted Gene Co-Expression Network Analysis (WGCNA) algorithm. Our strategy resulted in 11007 and 10445 unique genes consisting of 9 and 11 reproductive modules in Bos taurus and Sus scrofa, respectively...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28900502/a-bap1-mutation-specific-microrna-signature-predicts-clinical-outcomes-in-clear-cell-renal-cell-carcinoma-patients-with-wild-type-bap1
#14
Yu-Zheng Ge, Lu-Wei Xu, Chang-Cheng Zhou, Tian-Ze Lu, Wen-Tao Yao, Ran Wu, You-Cai Zhao, Xiao Xu, Zhi-Kai Hu, Min Wang, Xiao-Bing Yang, Liu-Hua Zhou, Bing Zhong, Zheng Xu, Wen-Cheng Li, Jia-Geng Zhu, Rui-Peng Jia
Background: Clear cell renal cell carcinoma (ccRCC) is the most prevalent histologic subtype of kidney cancers in adults, which could be divided into two distinct subgroups according to the BRCA1 associated protein-1 (BAP1) mutation status. In the current study, we comprehensively analyzed the genome-wide microRNA (miRNA) expression profiles in ccRCC, with the aim to identify the differentially expressed miRNAs between BAP1 mutant and wild-type tumors, and generate a BAP1 mutation-specific miRNA signature for ccRCC patients with wild-type BAP1...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28856588/whole-blood-microrna-markers-are-associated-with-acute-respiratory-distress-syndrome
#15
Zhaozhong Zhu, Liming Liang, Ruyang Zhang, Yongyue Wei, Li Su, Paula Tejera, Yichen Guo, Zhaoxi Wang, Quan Lu, Andrea A Baccarelli, Xi Zhu, Ednan K Bajwa, B Taylor Thompson, Guo-Ping Shi, David C Christiani
BACKGROUND: MicroRNAs (miRNAs) can play important roles in inflammation and infection, which are common manifestations of acute respiratory distress syndrome (ARDS). We assessed if whole blood miRNAs were potential diagnostic biomarkers for human ARDS. METHODS: This nested case-control study (N = 530) examined a cohort of ARDS patients and critically ill at-risk controls. Whole blood miRNA profiles and logistic regression analyses identified miRNAs correlated with ARDS...
August 30, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28846711/identification-of-novel-biomarkers-to-monitor-%C3%AE-cell-function-and-enable-early-detection-of-type-2-diabetes-risk
#16
Kirstine J Belongie, Ele Ferrannini, Kjell Johnson, Patricia Andrade-Gordon, Michael K Hansen, John R Petrie
A decline in β-cell function is a prerequisite for the development of type 2 diabetes, yet the level of β-cell function in individuals at risk of the condition is rarely measured. This is due, in part, to the fact that current methods for assessing β-cell function are inaccurate, prone to error, labor-intensive, or affected by glucose-lowering therapy. The aim of the current study was to identify novel circulating biomarkers to monitor β-cell function and to identify individuals at high risk of developing β-cell dysfunction...
2017: PloS One
https://www.readbyqxmd.com/read/28841043/prognostic-value-of-mirna-181a-b-in-colorectal-cancer-a-meta-analysis
#17
Xingwei Gu, Rong Jin, Xuping Mao, Jun Wang, Jintao Yuan, Guodong Zhao
AIMS: miR-181a and miR-181b have been investigated as prognostic biomarkers of colorectal cancer (CRC). However, there is controversy about the role of miR-181a and miR-181b in predicting CRC prognosis. Therefore, we performed this meta-analysis to evaluate prognostic values of miR-181a and miR-181b in CRC patients. MATERIALS & METHODS: Studies were systemically searched from publications and analyzed, and 999 CRC cases in nine studies were examined in this meta-analysis...
August 25, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28830935/differences-in-mirna-expression-profiles-between-wild-type-and-mutated-niftps
#18
Maria Denaro, Clara Ugolini, Anello Marcello Poma, Nicla Borrelli, Gabriele Materazzi, Paolo Piaggi, Massimo Chiarugi, Paolo Miccoli, Paolo Vitti, Fulvio Basolo
Noninvasive encapsulated follicular variants of papillary thyroid carcinomas have been recently reclassified as noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTPs). NIFTPs exhibit a behavior that is very close to that of follicular adenomas but different from the infiltrative and invasive follicular variants of papillary thyroid carcinomas (FVPTCs). The importance of miRNAs to carcinogenesis has been reported in recent years. miRNAs seem to be promising diagnostic and prognostic molecular markers for thyroid cancer, and the combination of miRNA expression and mutational status might improve cytological diagnosis...
October 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28830603/comparison-of-microrna-expression-in-high-count-monoclonal-b-cell-lymphocytosis-and-binet-a-chronic-lymphocytic-leukemia
#19
Felipe Magalhães Furtado, Priscila Santos Scheucher, Bárbara Amélia Santana, Dalila Lucíola Zanette, Rodrigo do Tocantins Calado, Eduardo Magalhães Rego, Daniel Mazza Matos, Roberto Passetto Falcão
BACKGROUND: Evidence suggests that monoclonal B-cell lymphocytosis precedes all chronic lymphocytic leukemia cases, although the molecular mechanisms responsible for disease progression are not understood. Aberrant miRNA expression may contribute to the pathogenesis of chronic lymphocytic leukemia. The objective of this study was to compare miRNA expression profiles of patients with Binet A chronic lymphocytic leukemia with those of subjects with high-count monoclonal B-cell lymphocytosis and healthy volunteers (controls)...
July 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/28814760/mir-181a-involves-in-the-hippocampus-dependent-memory-formation-via-targeting-prkaa1
#20
Sun-Fu Zhang, Jun-Chen Chen, Jing Zhang, Jian-Guo Xu
Post-transcriptional gene regulation by microRNAs (miRNAs) is involved in memory formation. However, the roles of individual miRNAs in these processes remain largely unknown. In this study, we want to clarify the role of miR-181a in hippocampus-dependent memory formation. A transient increase in miR-181a expression was observed after conditioned fear conditioning (CFC) and object location task (OLT) training. Selective overexpression or inhibition of miR-181a in the dorsal hippocampus (DH) via the injection of a miR-181a agomir or antagomir enhanced or impaired the CFC- and OLT-dependent memory formation, respectively...
August 16, 2017: Scientific Reports
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