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MiR-146a gene

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https://www.readbyqxmd.com/read/28077577/extracellular-microrna-signature-of-human-helper-t-cell-subsets-in-health-and-autoimmunity
#1
Anna Torri, Donatella Carpi, Elisabetta Bulgheroni, Maria-Cristina Crosti, Monica Moro, Paola Gruarin, Riccardo L Rossi, Grazisa Rossetti, Dolores Di Vizio, Mirjam Hoxha, Valentina Bollati, Cristina Gagliani, Carlo Tacchetti, Moira Paroni, Jens Geginat, Laura Corti, Luigia Venegoni, Emilio Berti, Massimiliano Pagani, Giuseppe Matarese, Sergio Abrignani, Paola de Candia
Upon TCR stimulation, CD4+ T lymphocytes release extracellular vesicles (EVs) containing microRNAs. However, no data are available on whether human CD4+ T cell subsets release EVs containing different pattern of microRNAs. The present work aimed at filling this gap by assessing the microRNA content in EVs released upon in vitro TCR stimulation of Th1, Th17 and T regulatory (Treg) cells. Our results indicate that EVs released by Treg cells are significantly different compared to those released by the other subsets...
January 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28077249/altered-mucosal-expression-of-micrornas-in-pediatric-patients-with-inflammatory-bowel-disease
#2
Nóra Judit Béres, Zoltán Kiss, Zsófia Sztupinszki, Gábor Lendvai, András Arató, Erna Sziksz, Ádám Vannay, Attila J Szabó, Katalin Eszter Müller, Áron Cseh, Kriszta Boros, Gábor Veres
INTRODUCTION: MicroRNAs (miRs) came recently into focus as promising novel research targets offering new insights into the pathogenesis of inflammatory bowel diseases (IBD). AIMS: The aim of our study was to identify a pediatric IBD (pIBD) characteristic miR profile serving as potential Crohn's disease (CD) and ulcerative colitis (UC) specific diagnostic pattern and to further analyze the related target genes. METHODS: Small RNA sequencing was performed on inflamed and intact colonic biopsies of CD, and control patients...
December 27, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28066106/modulation-of-hippocampal-gene-expression-of-microrna-146a-microrna-155-nuclear-factor-kappa-b-inflammatory-signaling-by-troxerutin-in-healthy-and-diabetic-rats
#3
Raana Yavari, Reza Badalzadeh, Mohammad Reza Alipour, Seyed Mahmoud Tabatabaei
OBJECTIVES: Inflammation plays a critical role in the progression of diabetic complications such as neurological disorders. Previous reports have indicated the memory-improving effect of troxerutin, in rat hippocampus, but the underlying mechanisms are unclear. Hence, we have investigated the effect of troxerutin pretreatment on gene expressions of inflammation-related microRNAs (miRs), miR-146a and miR-155, and nuclear factor-kappa B (NF-κB) signaling pathway in the hippocampus of healthy and diabetic rats...
November 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/28045967/induction-of-multiple-mir-200-182-members-in-the-brains-of-mice-are-associated-with-acute-herpes-simplex-virus-1-encephalitis
#4
Anna Majer, Kyle A Caligiuri, Kamilla K Gale, Yulian Niu, Clark S Phillipson, Timothy F Booth, Stephanie A Booth
Important roles of microRNAs (miRNAs) in regulating the host response during viral infection have begun to be defined. However, little is known about the functional roles of miRNAs within an in vivo acute viral encephalitis model. We therefore identified global changes in miRNA expression during acute herpes simplex virus type 1 (HSV-1) encephalitis (HSVE) in mice. We found that many of the highly upregulated miRNAs (miR-155, miR-146a and miR-15b) detected in HSV-1 infected brain tissue are known regulators of inflammation and innate immunity...
2017: PloS One
https://www.readbyqxmd.com/read/28043542/the-analysis-of-exosomal-micro-rnas-in-peripheral-blood-mononuclear-cell-derived-macrophages-after-infection-with-bacillus-calmette-gu%C3%A3-rin-by-rna-sequencing
#5
Esmaeil Mortaz, Shamila D Alipoor, Payam Tabarsi, Ian M Adcock, Johan Garssen, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: Tuberculosis (TB) is a major global threat to human health, especially in low-income countries. The diagnosis of TB is challenging because of the limitations of specificity and sensitivity with the current diagnostics. Novel, selective biomarkers for TB would be of great practical value. Exosomes are bioactive vesicles with 30-100nm in diameter, which are secreted from almost all cell types and are found in virtually every human body fluid. Exosomes transport micro-RNAs (miRNAs), which are post-transcriptional regulators of gene expression, around the body and allow miRNAs to modulate biological pathways in target cells...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28007485/viral-hemorrhagic-septicemia-virus-vhsv-infection-mediated-sequential-changes-in-micrornas-profile-of-epithelioma-papulosum-cyprini-epc-cells
#6
Abdellaoui Najib, Min Sun Kim, Ki Hong Kim
MicroRNAs are small non-coding RNAs and are involved in the regulation of wide biological processes. Viral hemorrhagic septicemia virus (VHSV) is the causative agent of viral hemorrhagic septicemia (VHS) disease causing a heavy loss in aquaculture farms. In this study, we tried to explore the effect of VHSV infection on microRNAs profile of Epithelioma papulosum cyprini (EPC) cells at different points of time (0, 3, 12, 24, and 48 h post infection). A total of 355 conserved microRNAs and 3 novel microRNAs were identified, and among them, 103 microRNAs were differentially expressed...
December 20, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27998828/nutritionally-relevant-concentrations-of-resveratrol-and-hydroxytyrosol-mitigate-oxidative-burst-of-human-granulocytes-and-monocytes-and-the-production-of-pro-inflammatory-mediators-in-lps-stimulated-raw-264-7-macrophages
#7
Elisabetta Bigagli, Lorenzo Cinci, Sara Paccosi, Astrid Parenti, Mario D'Ambrosio, Cristina Luceri
The health benefits of bio-active phenolic compounds have been largely investigated in vitro at concentrations which exceed those reachable in vivo. We investigated and compared the anti-inflammatory effects of resveratrol, hydroxytyrosol and oleuropein at physiologically relevant concentrations by using in vitro models of inflammation. Human granulocytes and monocytes were stimulated with phorbol myristate acetate (PMA) and the ability of resveratrol, hydroxytyrosol and oleuropein to inhibit the oxidative burst and CD11b expression was measured...
February 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/27917303/mir-146a-is-upregulated-during-retinal-pigment-epithelium-rpe-choroid-aging-in-mice-and-represses-il-6-and-vegf-a-expression-in-rpe-cells
#8
Yi Hao, Qinbo Zhou, Jing Ma, Yun Zhao, Shusheng Wang
PURPOSE: MicroRNA-146a (miR-146a) has been proposed as a marker for age-associated inflammation, or "inflammaging", acting as a negative regulator of cellular senescence and pro-inflammatory signaling pathways. However, the regulation and function of miR-146 during ocular aging remains unclear. Here we propose that miR-146 is regulated during aging of the retina and choroid, and functions in retinal pigment epithelial (RPE) cells to regulate key genes involved in inflammation and angiogenesis...
June 2016: Journal of Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/27893422/pttg1-regulated-by-mir-146-3p-promotes-bladder-cancer-migration-invasion-metastasis-and-growth
#9
Wei Xiang, Xinchao Wu, Chao Huang, Miao Wang, Xian Zhao, Gang Luo, Yawei Li, Guosong Jiang, Xingyuan Xiao, Fuqing Zeng
Pituitary tumor-transforming gene 1 (PTTG1) is identified as an oncogene, and overexpresses in many tumors. However, the role of PTTG1 in bladder cancer (BC) hasn't yet been characterized well. In this study, we showed the expression of PTTG1 mRNA and protein were both significantly increased in BC tissues and cells. The PTTG1 protein levels were positive correlated with increased tumor size, tumor-node-metastasis (TNM) stage, lymphatic invasion and distant metastasis of BC. PTTG1 knockdown dramatically suppressed the migration, invasion, metastasis and growth, and induced senescence and cell-cycle arrest at G0/G1 phase of BC cells...
November 22, 2016: Oncotarget
https://www.readbyqxmd.com/read/27888401/the-impact-of-chronic-hepatitis-c-infection-on-cholesterol-metabolism-in-pbmcs-is-associated-with-microrna-146a-expression
#10
M Sidorkiewicz, M Grek, B Jozwiak, A Krol, A Piekarska
Chronic hepatitis C (CHC) infection is known to induce important changes in host cholesterol metabolism. MicroRNAs (miRNAs) regulate the expression of many genes and, in consequence, control various processes, including human metabolism and response to viral infection. Recently, the alteration of the immune-associated miR-146a, which is abundantly present in peripheral blood mononuclear cells (PBMCs), was found in some viral infections. The study aimed to analyse the influence of hepatitis C virus (HCV) infection on miR-146a expression in PBMCs in vivo and in vitro, as well as to assess the possible impact of miR-146a alteration on the intracellular cholesterol level in PBMCs...
November 25, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27888002/polymorphisms-in-mir499a-and-mir125a-gene-are-associated-with-autoimmune-thyroid-diseases
#11
TianTian Cai, Jie Li, Xiaofei An, Ni Yan, Danfeng Li, Yanfei Jiang, Wen Wang, Liangfeng Shi, Qiu Qin, Ronghua Song, Guofei Wang, Wenjuan Jiang, Jin-An Zhang
BACKGROUND: Single nucleotide polymorphisms (SNPs) of the miR-146a, miR-499a and miR-125a have been shown to be associated with the susceptibility to several autoimmune diseases. This study was conducted to identify the association of SNPs rs2910164, rs57095329, rs3746444 and rs12976445 with autoimmune thyroid diseases (AITDs) in a Chinese Han population. METHODS: We enrolled 1061 patients with AITDs, including 701 patients with Graves' disease (GD) and 360 patients with Hashimoto's thyroiditis (HT), and 938 healthy individuals for a case-control genetic association study...
January 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27873272/analysis-of-viral-and-cellular-micrornas-in-ebv-infected-cells
#12
Rebecca L Skalsky
MicroRNAs are small, noncoding RNAs that posttranscriptionally regulate gene expression. The discovery of this relatively new mode of gene regulation as well as studies showing the prognostic value of viral and cellular miRNAs as biomarkers, such as in cancer progression, has stimulated the development of many methods to characterize miRNAs. EBV encodes 25 viral precursor microRNAs within its genome that are expressed during lytic and latent infection. In addition to viral miRNAs, EBV infection induces the expression of specific cellular oncogenic miRNAs, such as miR-155, miR-146a, miR-21, and others, that can contribute to the persistence of latently infected cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27867363/a-comparative-review-of-microrna-expression-patterns-in-autism-spectrum-disorder
#13
Steven D Hicks, Frank A Middleton
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by a wide spectrum of deficits in social interaction, communication, and behavior. There is a significant genetic component to ASD, yet no single gene variant accounts for >1% of incidence. Posttranscriptional mechanisms such as microRNAs (miRNAs) regulate gene expression without altering the genetic code. They are abundant in the developing brain and are dysregulated in children with ASD. Patterns of miRNA expression are altered in the brain, blood, saliva, and olfactory precursor cells of ASD subjects...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27866933/evaluation-of-the-tobacco-heating-system-2-2-ths2-2-part-5-microrna-expression-from-a-90-day-rat-inhalation-study-indicates-that-exposure-to-ths2-2-aerosol-causes-reduced-effects-on-lung-tissue-compared-with-cigarette-smoke
#14
Alain Sewer, Ulrike Kogel, Marja Talikka, Ee Tsin Wong, Florian Martin, Yang Xiang, Emmanuel Guedj, Nikolai V Ivanov, Julia Hoeng, Manuel C Peitsch
Modified-risk tobacco products (MRTP) are designed to reduce the individual risk of tobacco-related disease as well as population harm compared to smoking cigarettes. Experimental proof of their benefit needs to be provided at multiple levels in research fields. Here, we examined microRNA (miRNA) levels in the lungs of rats exposed to a candidate modified-risk tobacco product, the Tobacco Heating System 2.2 (THS2.2) in a 90-day OECD TG-413 inhalation study. Our aim was to assess the miRNA response to THS2.2 aerosol compared with the response to combustible cigarettes (CC) smoke from the reference cigarette 3R4F...
November 30, 2016: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/27866223/circulating-microrna-levels-predict-residual-beta-cell-function-and-glycaemic-control-in-children-with-type-1-diabetes-mellitus
#15
Nasim Samandari, Aashiq H Mirza, Lotte B Nielsen, Simranjeet Kaur, Philip Hougaard, Siri Fredheim, Henrik B Mortensen, Flemming Pociot
AIMS/HYPOTHESIS: We aimed to identify circulating microRNA (miRNA) that predicts clinical progression in a cohort of 123 children with new-onset type 1 diabetes mellitus. METHODS: Plasma samples were prospectively obtained at 1, 3, 6, 12 and 60 months after diagnosis from a subset of 40 children from the Danish Remission Phase Cohort, and profiled for miRNAs. At the same time points, meal-stimulated C-peptide and HbA1c levels were measured and insulin-dose adjusted HbA1c (IDAA1c) calculated...
February 2017: Diabetologia
https://www.readbyqxmd.com/read/27865919/differential-stress-induced-c-fos-expression-and-identification-of-region-specific-mirna-mrna-networks-in-the-dorsal-raphe-and-amygdala-of-high-responder-low-responder-rats
#16
Joshua L Cohen, Anooshah E Ata, Nateka L Jackson, Elizabeth J Rahn, Ryne C Ramaker, Sara Cooper, Ilan A Kerman, Sarah M Clinton
Chronic stress triggers a variety of physical and mental health problems, and how individuals cope with stress influences risk for emotional disorders. To investigate molecular mechanisms underlying distinct stress coping styles, we utilized rats that were selectively-bred for differences in emotionality and stress reactivity. We show that high novelty responding (HR) rats readily bury a shock probe in the defensive burying test, a measure of proactive stress coping behavior, while low novelty responding (LR) rats exhibit enhanced immobility, a measure of reactive coping...
February 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/27865387/microrna-expression-signatures-in-lungs-of-mice-infected-with-mycobacterium-tuberculosis
#17
Thiago Malardo, Luiz Gustavo Gardinassi, Bernardo Pereira Moreira, Éverton Padilha, Júlio César Cetrulo Lorenzi, Luana Silva Soares, Ana Flávia Gembre, Isabela Cardoso Fontoura, Luciana Previato de Almeida, Isabel Kinney Ferreira de Miranda Santos, Célio Lopes Silva, Arlete Aparecida Martins Coelho-Castelo
Tuberculosis (TB) is a major public health concern worldwide; however the factors that account for resistance or susceptibility to disease are not completely understood. Although some studies suggest that the differential expression of miRNAs in peripheral blood of TB patients could be useful as biomarkers of active disease, their involvement during the inflammatory process in lungs of infected individuals is unknown. Here, we evaluated the global expression of miRNAs in the lungs of mice experimentally infected with Mycobacterium tuberculosis on 30 and 60 days post-infection...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27864711/mesenchymal-stem-cells-derived-exosomal-micrornas-contribute-to-wound-inflammation
#18
REVIEW
Dongdong Ti, Haojie Hao, Xiaobing Fu, Weidong Han
Clinical and experimental studies have highlighted the significance of inflammation in coordinating wound repair and regeneration. However, it remains challenging to control the inflammatory response and tolerance at systemic levels without causing toxicity to injured tissues. Mesenchymal stem cells (MSCs) possess potent immunomodulatory properties and facilitate tissue repair by releasing exosomes, which generate a suitable microenvironment for inflammatory resolution. Exosomes contain several effective bioactive molecules and act as a cell-cell communication vehicle to influence cellular activities in recipient cells...
December 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27852797/modulation-of-mir-146a-complement-factor-h-mediated-inflammatory-responses-in-a-rat-model-of-temporal-lobe-epilepsy
#19
Fang He, Bei Liu, Qiang Meng, Yang Sun, Weiwen Wang, Chao Wang
Increasing evidence supports the involvement of inflammatory and immune processes in temporal lobe epilepsy (TLE). miRNAs represent small regulatory RNA molecules that have been shown to act as negative regulators of gene expression controlling different biological processes, including immune system homoeostasis and function. We investigated the expression and cellular distribution of miRNA-146a (miR-146a) in a rat model of TLE. Prominent up-regulation of miR-146a activation was evident in 1 week after status epilepticus (SE) and persisted in the chronic phase...
December 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27845876/hypoxia-induced-microrna-146a-represses-bcl-2-through-traf6-irak1-but-not-smad4-to-promote-chondrocyte-autophagy
#20
Guanghui Chen, Xin Gao, Jing Wang, Cheng Yang, Yang Wang, Yonggang Liu, Weiwei Zou, Tielong Liu
It has been shown that hypoxia stimulation promotes chondrocytes autophagy partly through HIF-1α, miR-146a and Bcl-2 progressively, and this mechanism represented the connection among hypoxia, miR-146a and autophagy, and provides a possible therapeutic strategy for osteoarthritis. However, the interaction between miR-146a and Bcl-2 is still unclear. Here in a hypoxic environment, we quantified the three reported miR-146a targets: two inflammation related targets Traf6, IRAK1; and the only reported target in chondrocytes Smad4...
December 19, 2016: Biological Chemistry
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