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MiR-181b

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https://www.readbyqxmd.com/read/28934717/expression-of-c-ebp%C3%AE-in-myeloid-progenitors-during-sepsis-promotes-immunosuppression
#1
Jun Dai, Ajinkya Kumbhare, Dima Youssef, Zhi Q Yao, Charles E McCall, Mohamed El Gazzar
Sepsis-induced myeloid-derived suppressor cells (MDSCs) contribute to immunosuppression associated with sepsis. We reported that the CCAAT enhancer-binding protein C/EBPβ activates microRNA (miR)-21 and miR-181b expressions, which induce transcription factor NFI-A to support the generation and expansion of MDSCs in the bone marrow and spleens of septic mice. Here, using a conditional knockout mouse model lacking C/EBPβ in the myeloid lineage, we find that without C/EBPβ, myeloid progenitor cells could not express miR-21 or miR-181b, and ectopic expression of C/EBPβ in the C/EBPβ-deficient myeloid progenitors activated the expression of the two miRNAs...
September 18, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28916639/small-rna-seq-during-acute-maximal-exercise-reveal-rnas-involved-in-vascular-inflammation-and-cardiometabolic-health
#2
Ravi Shah, Ashish S Yeri, Avash Das, Amanda Courtright-Lim, Olivia Ziegler, Ernest Gervino, Jeffrey Ocel, Pablo Quintero Pinzon, Luke Wooster, Cole Shields Bailey, Kahraman Tanriverdi, Lea Beaulieu, Jane E Freedman, Ionita Ghiran, Gregory D Lewis, Kendall Van Keuren-Jensen, Saumya Das
OBJECTIVE: Exercise improves cardiometabolic and vascular function, though mechanisms remain unclear. Our objective was to demonstrate the diversity of circulating extracellular RNA (ex-RNA) release during acute exercise in humans and its relevance to exercise-mediated benefits on vascular inflammation. Approach and Results: We performed plasma small RNA sequencing (RNA-seq) in 26 individuals undergoing symptom-limited maximal treadmill exercise, with replication of our top candidate miRNA in a separate cohort of 59 individuals undergoing bicycle ergometry...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28916633/systems-genetics-identifies-a-co-regulated-module-of-liver-micrornas-associated-with-plasma-ldl-cholesterol-in-murine-diet-induced-dyslipidemia
#3
Alisha R Coffey, Tangi L Smallwood, Jody Albright, Kunjie Hua, Matt Kanke, Daniel Pomp, Brian J Bennett, Praveen Sethupathy
Chronically altered levels of circulating lipids, termed dyslipidemia, is a significant risk factor for a number of metabolic and cardiovascular morbidities. MicroRNAs (miRNAs) have emerged as important regulators of lipid balance, have been implicated in dyslipidemia, and have been proposed as candidate therapeutic targets in lipid-related disorders including atherosclerosis. A major limitation of most murine studies of miRNAs in lipid metabolic disorders is that they have been performed in just one (or very few) inbred strains, such as C57BL/6...
September 15, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28912851/molecular-mechanism-of-mir-181b-in-heart-disease-due-to-pregnancy-induced-hypertension-syndrome
#4
Zheng Gao, Li Wang, Jinyun Wang, Fengyong Yang, Jin Qu
The present study aimed to investigate the molecular mechanisms of microRNA (miR)-181b in heart disease due to hypertensive disorders complicating pregnancy (HDCP) through regulating the expression of metallopeptidase inhibitor 3 (TIMP3). miR-181b expression was detected by reverse transcription-quantitative polymerase chain reaction in peripheral blood samples from patients with HDCP. These samples were analyzed for clinical pathological characteristics. The primary cardiomyocytes of rats were cultured in hypoxic conditions for 24 h, in which miR-181b expression was detected at different time points...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28899784/mir-181b-regulates-steatosis-in-nonalcoholic-fatty-liver-disease-via-targeting-sirt1
#5
Yunxia Wang, Kongxi Zhu, Weihua Yu, Hongjuan Wang, Lan Liu, Qiong Wu, Shuai Li, Jianqiang Guo
Non-alcoholic fatty liver diseases (NAFLD) is one of the leading cause of chronic liver diseases in the world. However, the pathogenesis of NAFLD is still unclear. Emerging studies have demonstrated that microRNAs (miRs) are profoundly involved in NAFLD and related metabolic diseases. Here, we investigated the mechanisms by which miR-181b influences NAFLD via direct targeting SIRT1. The expression of miR181b was up-regulated while SIRT1 was down-regulated in both human NAFLD patients and high fat diet (HFD) induced NAFDL mice model...
September 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28877608/genome-wide-integrative-analysis-identified-snp-mirna-mrna-interaction-networks-in-peripheral-blood-mononuclear-cells
#6
Xiang Lin, Wei Xia, Wei Ji, Fang-Fei Xie, Pei He, Xiao-Wei Zhu, Yong-Hong Zhang, Fei-Yan Deng, Shu-Feng Lei
AIM: To detect SNP-miRNA-mRNA interaction networks and to elucidate miRNA-mediated regulation effects on mRNA expression. MATERIALS & METHODS: In human peripheral blood mononuclear cells of 43 females, SNP-miRNA-mRNA interaction networks were established through an integrative analysis. Then causal inference test was followed to detect miRNA-mediated effects on mRNA expressions. RESULTS: About 167 trios corresponding to 56 SNPs, 20 miRNAs and 47 target-mRNAs have the SNP-miRNA-mRNA interactions, but only 22 trios have miRNA-mediated effects between SNP and mRNA...
September 7, 2017: Epigenomics
https://www.readbyqxmd.com/read/28841043/prognostic-value-of-mirna-181a-b-in-colorectal-cancer-a-meta-analysis
#7
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/28830603/comparison-of-microrna-expression-in-high-count-monoclonal-b-cell-lymphocytosis-and-binet-a-chronic-lymphocytic-leukemia
#8
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/28797462/a-comprehensive-study-of-smoking-specific-microrna-alterations-in-head-and-neck-squamous-cell-carcinoma
#9
Aswini R Krishnan, Hao Zheng, James G Kwok, Yuanhao Qu, Angela E Zou, Avinaash Korrapati, Pin Xue Li, Joseph A Califano, Melbourne F Hovell, Jessica Wang-Rodriguez, Weg M Ongkeko
OBJECTIVE: While tobacco smoking is a well-known risk factor for head and neck squamous cell carcinoma (HNSCC), the molecular mechanisms underlying tobacco-induced HNSCC remain unclear. This study sought to comprehensively identify microRNA (miRNA) alterations and evaluate their clinical relevance in smoking-induced HNSCC pathogenesis and progression. MATERIALS AND METHODS: Using small RNA-sequencing data and clinical data from 145 HNSCC patients, we performed a series of differential expression and correlation analyses to identify a panel of tobacco-dysregulated miRNAs associated with key clinical characteristics in HNSCC...
September 2017: Oral Oncology
https://www.readbyqxmd.com/read/28769921/microrna-181-variants-regulate-t-cell-phenotype-in-the-context-of-autoimmune-neuroinflammation
#10
Samira Ghorbani, Farideh Talebi, Wing Fuk Chan, Farimah Masoumi, Mohammed Vojgani, Christopher Power, Farshid Noorbakhsh
BACKGROUND: Recent studies have revealed that multiple sclerosis (MS) lesions have distinct microRNA (miRNA) expression profiles. miR-181 family members show altered expression in MS tissues although their participation in MS pathogenesis remains uncertain. Herein, we investigated the involvement of miR-181a and miR-181b in the pathogenesis of MS and its animal model, experimental autoimmune encephalomyelitis (EAE). METHODS: miR-181a and -b levels were measured in the central nervous system (CNS) of patients with MS and mice with EAE as well as relevant leukocyte cultures by real-time RT-PCR...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28675011/-characterization-of-micrornas-profiles-of-induced-pluripotent-stem-cells-reprogrammed-from-human-dental-pulp-stem-cells-and-stem-cells-from-apical-papilla
#11
Tan Xiaobing, Dai Qingyuan
OBJECTIVE: To compare characterization of microRNAs (miRNAs) expression profiles of induced pluripotent stem cells (iPSCs) reprogrammed from human dental pulp stem cells (DPSCs) and stem cells from apical papilla (SCAP) and screen-specific microRNA. METHODS: Human DPSCs and SCAP were reprogrammed into iPSCs using a Sendai virus vector. Total RNA of human DPSCs-iPSCs and SCAP-iPSCs were extracted. miRNAs were labeled and hybridized. Slides were scanned, and images were imported into GenePix Pro 6...
June 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28656135/no-significant-difference-between-plasma-mirnas-and-plasma-derived-exosomal-mirnas-from-healthy-people
#12
Fei Tian, Yanting Shen, Zhenzhu Chen, Rui Li, Qinyu Ge
BACKGROUND: MicroRNAs (miRNAs) are small noncoding RNAs that are involved in many biological regulation processes. Studies have reported that miRNAs are enriched in human plasma and plasma-derived exosome as novel diagnostic biomarkers. The aim of this study was to determine whether the miRNA expression levels are different between plasma and plasma-derived exosome. METHODS: We sequenced and quantified the miRNAs in plasma and exosome from healthy blood samples and validated three miRNAs in the two groups of lung cancer samples by qRT-PCR...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28643459/construction-of-competitive-endogenous-rna-network-reveals-regulatory-role-of-long-non-coding-rnas-in-type-2-diabetes-mellitus
#13
Zijing Lin, Xinyu Li, Xiaorong Zhan, Lijie Sun, Jie Gao, Yan Cao, Hui Qiu
Increasing epidemic of type 2 diabetes mellitus (T2DM) and its comorbidities makes it urgent to understand the pathogenesis and regulatory mechanism. However, little is known about the regulatory role of lncRNAs in diabetes. Here, we constructed a T2DM-related competitive endogenous RNA (ceRNA) network (DMCN) to explore biological function of lncRNAs during the development of diabetes mellitus. This network contained 351 nodes including 98 mRNAs, 86 microRNAs and 167 lncRNAs. Functional analysis showed that the mRNAs in DMCN were annotated into some diabetes-related pathways...
June 23, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28588271/pp2a-inhibition-from-lb100-therapy-enhances-daunorubicin-cytotoxicity-in-secondary-acute-myeloid-leukemia-via-mir-181b-1-upregulation
#14
Chao Hu, Mengxia Yu, Yanling Ren, Kongfei Li, Dominic M Maggio, Chen Mei, Li Ye, Juying Wei, Jie Jin, Zhengping Zhuang, Hongyan Tong
Patients with secondary acute myeloid leukemia (sAML) arising from myelodysplastic syndromes have a poor prognosis marked by an increased resistance to chemotherapy. An urgent need exists for adjuvant treatments that can enhance or replace current therapeutic options. Here we show the potential of LB100, a small-molecule protein phosphatase 2 A (PP2A) inhibitor, as a monotherapy and chemosensitizing agent for sAML using an in-vitro and in-vivo approach. We demonstrate that LB100 decreases cell viability through caspase activation and G2/M cell-cycle arrest...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28534939/mir%C3%A2-181b%C3%A2-5p-mediates-tgf%C3%A2-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-non-small-cell-lung-cancer-stem-like-cells-derived-from-lung-adenocarcinoma-a549-cells
#15
Xuetao Li, Jing Han, Haizhen Zhu, Lina Peng, Zhengtang Chen
The ability of non-small cell lung cancer (NSCLC) cells to invade and metastasize is associated with epithelial-to-mesenchymal transition (EMT). The process of EMT is, at least in part, regulated by microRNAs. However, it is unknown whether microRNAs regulate EMT in cancer stem-like cells (CSLCs), or which microRNAs are involved. In the present study, we compared microRNA expression in A549 cells, TGF‑β1-treated A549 cells, CSLCs characterized by the CD133+/CD326+ phenotype, and TGF‑β1-treated CSLCs. We found that miR‑181b‑5p expression was upregulated by TGF‑β1...
July 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28501897/mir-181b-modulates-chemosensitivity-of-glioblastoma-multiforme-cells-to-temozolomide-by-targeting-the-epidermal-growth-factor-receptor
#16
Yunxiang Chen, Rui Li, Minhong Pan, Zhumei Shi, Wei Yan, Ning Liu, Yongping You, Junxia Zhang, Xiefeng Wang
Temozolomide (TMZ) is a promising chemotherapeutic agent to treat Glioblastoma multiforme (GBM). However, resistance to TMZ develops quickly with a high frequency. The mechanisms underlying GBM cells' resistance to TMZ are not fully understood. MicroRNAs (miRNAs) are small, non-coding RNA molecules that regulate protein expression by cleaving or repressing the translation of target mRNAs. Recently, miRNAs have been discovered to play important roles in drug resistance. A previous study showed that miR-181b in involved in glioma tumorigenesis...
July 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28492808/famlf-is-a-target-of-mir-181b-in-burkitt-lymphoma
#17
J G Li, Y Ding, Y M Huang, W L Chen, L L Pan, Y Li, X L Chen, Y Chen, S Y Wang, X N Wu
Burkitt lymphoma (BL) is a highly malignant non-Hodgkin's lymphoma that is closely related to the abnormal expression of genes. Familial acute myelogenous leukemia related factor (FAMLF; GenBank accession No. EF413001.1) is a novel gene that was cloned by our research group, and miR-181b is located in the intron of the FAMLF gene. To verify the role of miR-181b and FAMLF in BL, RNAhybrid software was used to predict target site of miR-181b on FAMLF and real-time quantitative PCR (RQ-PCR) was used to detect expression of miR-181b and FAMLF in BL patients, Raji cells and unaffected individuals...
May 4, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28475287/lncrna-ccat1-promotes-glioma-tumorigenesis-by-sponging-mir-181b
#18
Bingzhou Cui, Baoshan Li, Qi Liu, Youqiang Cui
Colon cancer-associated transcript 1 (CCAT1), a long non-coding RNA (lncRNA), is upregulated and has a vital role in the pathogenesis of numerous cancers. Recently, its high expression was found in glioma tissues. miR-181b is downregulated in glioma and acts as a tumor suppressor. However, the exact mechanism of CCAT1 action in the regulation of glioma development remains unknown. CCAT1 and miR-181b expression was firstly examined in glioma tissue samples by real-time PCR. An RNA interference approach was used to downregulate CCAT1 expression and we analyzed the underlying mechanism of CCAT1 by using bioinformatics analysis, CCK-8 assay, Transwell assay, flow cytometry, luciferase assay, RNA immunoprecipitation, real-time PCR, Western blot, and xenograft models...
May 5, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28466998/cardiac-remodelling-and-preeclampsia-an-overview-of-overlapping-circulating-mirnas
#19
Zenab Mohseni, Marc E A Spaanderman, Jolien Oben, Martina Calore, Elianne Derksen, Salwan Al-Nasiry, Leon de Windt, Chahinda Ghossein-Doha
OBJECTIVES: Preeclampsia (PE) is strongly associated with heart failure (HF) later in life. During preeclamptic pregnancy the left ventricle (LV) remodels in a concentric way. This aberrant remodelling often persists after delivery. The concentric remodelling during PE can induce molecular signatures that may explain the associated increased risk of HF. This signature may be evaluated in terms of microRNAs (miRNAs). This review evaluates existing literature on miRNA expression data in concentric remodelling on the one hand and PE on the other to generate a list of overlapping miRNA expression patterns in both...
May 3, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28459461/mir-181b-modulates-egfr-dependent-vcam-1-expression-and-monocyte-adhesion-in-glioblastoma
#20
Y-S Liu, H-Y Lin, S-W Lai, C-Y Huang, B-R Huang, P-Y Chen, K-C Wei, D-Y Lu
Tumor-associated macrophages (TAMs) originate as circulating monocytes, and are recruited to gliomas, where they facilitate tumor growth and migration. Understanding the interaction between TAM and cancer cells may identify therapeutic targets for glioblastoma multiforme (GBM). Vascular cell adhesion molecule-1 (VCAM-1) is a cytokine-induced adhesion molecule expressed on the surface of cancer cells, which is involved in interactions with immune cells. Analysis of the glioma patient database and tissue immunohistochemistry showed that VCAM-1 expression correlated with the clinico-pathological grade of gliomas...
August 31, 2017: Oncogene
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