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Mir-155

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https://www.readbyqxmd.com/read/29352275/dexamethasone-induced-mir-155-up-regulation-in-differentiating-3t3-l1-preadipocytes-does-not-affect-adipogenesis
#1
Vian Peshdary, Ella Atlas
Dexamethasone is a synthetic glucocorticoid that is widely used as an adipogenic inducer in both murine and human in vitro models. Glucocorticoids have been shown to regulate early transcriptional events in adipogenesis. MicroRNAs (miRNAs) have been also implicated in the regulation of preadipocyte differentiation; however, the effects of glucocorticoids on miRNA expression levels during this process have not been studied. In this study we investigated the effects of glucocorticoids on the expression levels of miR-155 in differentiating 3T3-L1 preadipocytes...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29349567/hbeag-induces-the-expression-of-macrophage-mir-155-to-accelerate-liver-injury-via-promoting-production-of-inflammatory-cytokines
#2
Wenwen Wang, Hongjun Bian, Feifei Li, Xiao Li, Di Zhang, Shuohuan Sun, Shouyang Song, Qiang Zhu, Wanhua Ren, Chengyong Qin, Jianni Qi
Activation of Kupffer cells (KCs) induced that inflammatory cytokine production plays a central role in the pathogenesis of HBV infection. The previous studies from our and other laboratory demonstrated miRNAs can regulate TLR-inducing inflammatory responses to macrophage. However, the involvement of miRNAs in HBV-associated antigen-induced macrophage activation is still not thoroughly understood. Here, we evaluated the effects and mechanisms of miR-155 in HBV-associated antigen-induced macrophage activation...
January 18, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29348831/aberrant-expression-of-mir-21-mir-376c-and-mir-145-and-their-target-host-genes-in-merkel-cell-polyomavirus-positive-non-small-cell-lung-cancer
#3
Ismini Lasithiotaki, Eliza Tsitoura, Anastasios Koutsopoulos, Eleni Lagoudaki, Chara Koutoulaki, George Pitsidianakis, Demetrios A Spandidos, Nikolaos M Siafakas, George Sourvinos, Katerina M Antoniou
Merkel Cell Polyoma Virus (MCPyV) infection has been associated with non-small cell lung cancer (NSCLC). Viruses can manipulate cellular miRNAs or have a profound impact on cellular miRNA expression to control host regulatory pathways. In this study, we evaluated the expression profiles of cancer-associated and virally affected host microRNAs miR-21, miR-145, miR-146a, miR-155, miR-302c, miR-367 and miR-376c in a series of NSCLC tissue samples as well as in samples from "healthy" sites, distant from the tumour region that were either positive or negative for MCPyV DNA...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29341487/identification-of-stress-related-microrna-biomarkers-in-type-2-diabetes-a-systematic-review-and-meta-analysis
#4
Yingzhi Liang, Li Jiajianghui, Huanbo Xiao, Yan He, Ling Zhang, Yuxiang Yan
BACKGROUND: Many studies have investigated miRNAs in the detection of type 2 diabetes mellitus (T2DM). Here, the dysregulated direction of stress-related miRNAs that used as biomarkers of T2DM was summarized and analyzed. METHODS: PubMed, EMBASE, ISI web of science and three Chinese databases were searched for case-control miRNA profiling studies about T2DM. A meta-analysis under a random effect was performed. Subgroup analysis was conducted based on different tissues and species, respectively...
January 17, 2018: Journal of Diabetes
https://www.readbyqxmd.com/read/29339789/exosome-mediated-breast-cancer-chemoresistance-via-mir-155-transfer
#5
Juliana Carvalho Santos, Natália da Silva Lima, Luis Otavio Sarian, Ander Matheu, Marcelo Lima Ribeiro, Sophie Françoise Mauricette Derchain
Breast cancer remains the most prevalent cause of cancer mortality in woman worldwide due to the metastatic process and therapy resistance. Resistance against cancer therapy is partially attributed to cancer stem cells (CSCs). These cells arise from epithelial cells undergoing epithelial-to-mesenchymal transition (EMT) and might be responsible for tumor recurrence. In this study, we reported the relevance of miR-155 upregulation in chemoresistant cells associated with EMT. Notably, we found miR-155 induction in exosomes isolated from CSCs and resistant cells, followed by resistant cells' exosome transfer to the recipient sensitive cells...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339071/mir-155-5p-promotes-fibroblast-cell-proliferation-and-inhibits-foxo-signaling-pathway-in-vulvar-lichen-sclerosis-by-targeting-foxo3-and-cdkn1b
#6
Lina Ren, Yi Zhao, Xiaoxi Huo, Xin Wu
Vulvar lichen sclerosis (VLS) is a chronic inflammatory skin disorder. Evidence is accumulating that microRNAs (miRNAs) exert crucial roles in initiation and development of a wide range of human diseases. MiR-155-5p has been frequently reported to be implicated in the tumorigenesis and progression of multiple types of cancers, however, its biological role in VLS remains unclear. This study aimed to explore the role of miR-155-5p in VLS and clarify the potential molecular mechanisms involved. In the present study, miR-155-5p was observed to be significantly upregulated in VLS tissues...
January 12, 2018: Gene
https://www.readbyqxmd.com/read/29333944/mir-155-promotes-uveal-melanoma-cell-proliferation-and-invasion-by-regulating-ndfip1-expression
#7
Jing Peng, Honglei Liu, Cuihong Liu
MicroRNAs refer to small RNA molecules that destroy the messenger RNA by binding on them inhibiting the production of protein. However, the role of miR-155 in uveal melanoma metastasis remains largely unknown. In this study, we found that miR-155 was upregulated in both uveal melanoma cells and tissues. Transfection of miR-155 mimic into uveal melanoma cells led to an increase in cell growth and invasion; in contrast, inhibition of miR-155 resulted in opposite effects. Also, we identified Nedd4-family interacting protein 1 as a direct target of miR-155, and the expression of Nedd4-family interacting protein 1 was inhibited by miR-155...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29330743/acute-downregulation-of-mir-155-leads-to-a-reduced-collagen-synthesis-through-attenuating-macrophages-inflammatory-factor-secretion-by-targeting-ship1
#8
Longlong Yang, Lingying Liu, Huinan Ying, Yonghui Yu, Donghai Zhang, Huping Deng, Haijun Zhang, Jiake Chai
Fibrosis, tightly associated with fibroblasts collagen synthesis, is related closely with inflammatory response. Our previously study found that acute downregulation of miR-155 at wound sites leads to a reduced fibrosis, however its particular mechanism is unclear. Herein, we aimed to explore the mechanism of miR-155 in reducing fibrosis. We first found that down-regulation of miR-155 inhibited macrophages transforming growth factor-β1 (TGF-β1) and IL-1β secretion. Next, we found that co-cultured with macrophages increased the proliferation and collagen synthesis of fibroblasts, and downregulation of miR-155 in macrophages could effectively attenuate the accelerative effects...
January 12, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29328396/placenta%C3%A2-associated-serum-exosomal-mir%C3%A2-155-derived-from-patients-with-preeclampsia-inhibits-enos-expression-in-human-umbilical-vein-endothelial-cells
#9
Li Shen, Yujing Li, Ruotian Li, Zhenyu Diao, Muyi Yany, Mengfei Wu, Haixiang Sun, Guijun Yan, Yali Hu
Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and results in systemic endothelial cell dysfunction in the second or third trimester. MicroRNAs (miRs) expressed in the human placenta can be secreted into maternal circulation via exosomes, which are secreted extracellular vesicles that serve important roles in intercellular communication. The present study hypothesized that upregulation of placenta‑associated serum exosomal miR‑155 from patients with PE may suppress endothelial nitric oxide synthase (eNOS) expression in endothelial cells...
January 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29325906/immune-related-mirna-expression-patterns-in-peripheral-blood-mononuclear-cells-differ-in-multiple-sclerosis-relapse-and-remission
#10
Natalia Baulina, Olga Kulakova, Ivan Kiselev, German Osmak, Ekaterina Popova, Alexey Boyko, Olga Favorova
MiRNAs were shown to participate in development of autoimmune inflammatory process in multiple sclerosis (MS). To investigate miRNAs involvement in relapse-remission MS course, we analyzed expression of immune-related miRNAs in PBMC of treatment-naïve relapsing and remitting MS patients and healthy controls. The upregulation of miR-126-3p, miR-146b-5p, miR-155, miR-196a-5p, miR-21-5p, miR-223-3p, miR-326 and miR-379-5p in remission compared to relapse was observed; when apply gender stratification, miR-223-3p and miR-379-5p were upregulated only in men...
January 5, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29310666/in-vivo-evidence-for-the-contribution-of-peripheral-circulating-inflammatory-exosomes-to-neuroinflammation
#11
Jing Jing Li, Bin Wang, Mahesh Chandra Kodali, Chao Chen, Eunhee Kim, Benjamin John Patters, Lubin Lan, Santosh Kumar, Xinjun Wang, Junming Yue, Francesca-Fang Liao
BACKGROUND: Neuroinflammation is implicated in the development and progression of many neurodegenerative diseases. Conditions that lead to a peripheral immune response are often associated with inflammation in the central nervous system (CNS), suggesting a communication between the peripheral immune system and the neuroimmune system. The underlying mechanism of this relationship remains largely unknown; however, experimental studies have demonstrated that exposure to infectious stimuli, such as lipopolysaccharide (LPS) or high-fat diet (HFD) feeding, result in profound peripheral- and neuro-inflammation...
January 8, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29300789/mycobacterium-tuberculosis-induced-mir-155-subverts-autophagy-by-targeting-atg3-in-human-dendritic-cells
#12
Marilena P Etna, Alessandro Sinigaglia, Angela Grassi, Elena Giacomini, Alessandra Romagnoli, Manuela Pardini, Martina Severa, Melania Cruciani, Fabiana Rizzo, Eleni Ananstasiadou, Barbara Di Camillo, Luisa Barzon, Gian Maria Fimia, Riccardo Manganelli, Eliana M Coccia
Autophagy is a primordial eukaryotic pathway, which provides the immune system with multiple mechanisms for the elimination of invading pathogens including Mycobacterium tuberculosis (Mtb). As a consequence, Mtb has evolved different strategies to hijack the autophagy process. Given the crucial role of human primary dendritic cells (DC) in host immunity control, we characterized Mtb-DC interplay by studying the contribution of cellular microRNAs (miRNAs) in the post-transcriptional regulation of autophagy related genes...
January 4, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29291025/prognostic-value-of-micrornas-in-hepatocellular-carcinoma-a-meta-analysis
#13
Yue Zhang, Chao Wei, Cong-Cong Guo, Rong-Xiu Bi, Jin Xie, Dong-Hui Guan, Chuan-Hua Yang, Yue-Hua Jiang
Background: Numerous articles reported that dysregulated expression levels of miRNAs correlated with survival time of HCC patients. However, there has not been a comprehensive meta-analysis to evaluate the accurate prognostic value of miRNAs in HCC. Design: Meta-analysis. Materials and Methods: Studies, published in English, estimating expression levels of miRNAs with any survival curves in HCC were identified up until 15 April, 2017 by performing online searches in PubMed, EMBASE, Web of Science and Cochrane Database of Systematic Reviews by two independent authors...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290778/increased-expression-of-mir-155-and-mir-222-is-associated-with-lymph-node-positive-status
#14
Vladimir Chernyy, Vladimir Pustylnyak, Vadim Kozlov, Lyudmila Gulyaeva
Identification of prognostic molecular markers of breast cancer is extremely important. The spreading out of the primary breast tumour cells to the lymphatic system is at the forefront of symbolising the first signs of distant organ metastasis. Deregulated genes in breast cancer tissues that spread to lymph nodes may show early predictive molecular markers. In the present study, we selected five microRNAs, which play a key function in the invasion-metastasis cascade. We investigated the levels of microRNAs in 80 paired samples of BC and matched adjoining tissues, and we examined the potential relationships between microRNA levels and positive lymph node status...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29282605/mir-155-in-cancer-drug-resistance-and-as-target-for-mirna-based-therapeutics
#15
REVIEW
Recep Bayraktar, Katrien Van Roosbroeck
Small non-coding microRNAs (miRNAs) are instrumental in physiological processes, such as proliferation, cell cycle, apoptosis, and differentiation, processes which are often disrupted in diseases like cancer. miR-155 is one of the best conserved and multifunctional miRNAs, which is mainly characterized by overexpression in multiple diseases including malignant tumors. Altered expression of miR-155 is found to be associated with various physiological and pathological processes, including hematopoietic lineage differentiation, immune response, inflammation, and tumorigenesis...
December 27, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29281614/potential-contribution-of-erythrocyte-microrna-to-secondary-erythrocytosis-and-thrombocytopenia-in-congenital-heart-disease
#16
Nobuhiro Mukai, Yoshinobu Nakayama, Satoshi Murakami, Toshihito Tanahashi, Daniel I Sessler, Sachiyo Ishii, Satoru Ogawa, Natsuko Tokuhira, Toshiki Mizobe, Teiji Sawa, Yasufumi Nakajima
BACKGROUND: Children with cyanotic heart disease develop secondary erythrocytosis and thrombocytopenia via unknown mechanisms. Mature erythrocyte microRNAs may reflect clinical pathologies and cell differentiation processes pre-enucleation. This study evaluated erythrocyte microRNAs in children with cyanotic heart disease. METHODS: Erythrocyte microRNAs from children with cyanotic and acyanotic heart disease and without cardiac disease were quantified with Ion PGM System (n=10 per group)...
December 27, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29260515/-mir-155-bach1-signaling-pathway-in-human-lung-adenocarcinoma-cell-death-induced-by-arsenic-trioxide
#17
Shi-Yan Gu, Hong-Yu Chen, Huang-Mei Dai, Xin-Yang Li, Zun-Zhen Zhang
OBJECTIVE: To explore the changes of micro RNA 155 (miR-155),BTB and CNC homologous protein 1 (BACH1),quinone oxidoreductase 1 (NQO1) and heme-oxygenase-1 (HO-1) in the process of arsenic trioxide-induced cell death,and to clarify the relationship between miR-155 and BACH1,providing experimental basis for the sensitivity of arsenic trioxide (ATO) treatment. METHODS: Human lung adenocarcinoma cell line A549 cells were treated with different concentrations of ATO...
November 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29258536/down-regulation-of-mir-9-in-the-peripheral-leukocytes-of-huntington-s-disease-patients
#18
Kuo-Hsuan Chang, Yih-Ru Wu, Chiung-Mei Chen
BACKGROUND: Huntington's disease (HD), caused by expansion of a polyglutamine tract within HUNTINGTIN (HTT) protein, is an autosomal dominant neurodegenerative disease associated with a progressive neurodegeneration of striatum and cerebral cortex. Although a few studies have identified substantial microRNA (miRNA) alterations in central nervous tissues from HD patients, it will be more accessible to employ these molecular changes in peripheral tissues as biomarkers for HD. METHODS: We examined the expression levels of 13 miRNAs (miR-1, mirR-9, miR-9*, miR-10b, miR-29a, miR-29b, miR-124a, miR-132, miR-155, miR-196a, miR-196b, miR-330 and miR-615), 10 of which previously demonstrated alterations and 3 of which are potential regulators of differentially-expressed genes in brains of HD patients, in the peripheral leukocytes of 36 HD patients, 8 pre-symptomatic HD carriers and 28 healthy controls...
December 19, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29249119/expression-of-mirna-155-foxp3-and-ror-gamma-in-children-with-moderate-and-severe-atopic-dermatitis
#19
Massimiliano Bergallo, Martina Accorinti, Ilaria Galliano, Paola Coppo, Paola Montanari, Pietro Quaglino, Francesco Savino
BACKGROUND: Atopic dermatitis is a disease characterized by a chronic inflammatory process in the skin, but its link to miRNA 155 is less known. The aim of the study was to evaluate the expression of microRNA155, and T helper type 17 cells and Treg cells in children with atopic dermatitis. METHODS: The study population consisted of: children seen for atopic dermatitis at the outpatient ambulatory of Dermatology at the Children Hospital Regina Margherita, Torino, Italy,( n = 23); healthy control subjects ( n =23)...
December 15, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29247570/mir-155-promotes-gastric-cancer-growth-and-invasion-by-negatively-regulating-transforming-growth-factor-beta-receptor-2
#20
Yajing Qu, Haiyang Zhang, Wu Sun, Yueting Han, Shuang Li, Yanjun Qu, Guoguang Ying, Yi Ba
Gastric cancer (GC) has a high morbidity and mortality among the common malignancies worldwide. It is essential to elucidate the molecular events of GC proliferation and invasion, which will provide new therapeutic targets for GC. The inactivation of TGFβR2 is correlates with cancer cells growth and metastasis, but the mechanisms underlying the down-regulation of TGFβR2 expression remain unknown. MicroRNAs (miRNAs) act as post-transcriptional regulators play a key role in the development of cancers. The bioinformatics analysis and luciferase reporter assay demonstrated that miR-155 directly bind the 3'-untranslated region (3'-UTR) of TGFβR2 mRNA...
December 16, 2017: Cancer Science
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