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Mir-155

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https://www.readbyqxmd.com/read/28434989/colorimetric-detection-of-microrna-based-hybridization-chain-reaction-for-signal-amplification-and-enzyme-for-visualization
#1
Na Ying, Taifan Sun, Zhibao Chen, Guangping Song, Bingyao Qi, Shengjun Bu, Xiuwei Sun, Jiayu Wan, Zehong Li
MicroRNAs (miRNAs) have key roles in gene expression and can be employed as biomarkers for early diagnosis of various diseases, especially cancers. Detection of miRNAs remains challenging and often requires detection platforms. Here, a horseradish peroxidase (HRP)-assisted hybridization chain reaction (HCR) for colorimetric detection of miR-155 was described. In the presence of target miRNA, the capture probe immobilized on the microplate sandwiched the target miR-155 with the 3' end of the reporter probe. Another exposed part of the RP at the 5'end triggered HCR producing double-stranded DNA polymers with multiple fluorescein isothiocyanates (FITC) for signal amplification...
April 20, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28432220/mir-155-promotes-flt3-itd-induced-myeloproliferative-disease-through-inhibition-of-the-interferon-response
#2
Jared A Wallace, Dominique A Kagele, Anna M Eiring, Carissa N Kim, Ruozhen Hu, Marah C Runtsch, Margaret Alexander, Thomas B Huffaker, Soh-Hyun Lee, Ami B Patel, Timothy L Mosbruger, Warren Voth, Dinesh S Rao, Rodney R Miles, June L Round, Michael W Deininger, Ryan M O'Connell
FLT3-ITD(+) AML accounts for approximately 25% of all AML cases, and is a subtype that carries a poor prognosis. miR-155 is specifically overexpressed in FLT3-ITD(+) AML compared to FLT3-WT AML, and is critical for the growth of FLT3-ITD(+) AML cells in vitro. However, miR-155's role in regulating FLT3-ITD-mediated disease in vivo remains unclear. In this study, we utilized a genetic mouse model to determine whether miR-155 influences the development of FLT3-ITD-induced myeloproliferative disease. Results indicate that miR-155 promotes FLT3-ITD-induced myeloid expansion in the bone marrow, spleen, and peripheral blood...
April 21, 2017: Blood
https://www.readbyqxmd.com/read/28425867/chemokines-and-relevant-micrornas-in-the-atherogenic-process
#3
Dimitry A Chistiakov, Alexander N Orekhov, Yuri V Bobryshev
Chemokines play a significant role in initial and advanced steps of atherogenesis. In early steps, chemokines control the adhesion of leukocytes to endothelial cells (ECs) followed by transmigration of monocytes and their deposition in the intima where they differentiate to proinflammatory macrophages. Except proinflammatory activity, chemokines are responsible for homeostasis and homing of progenitor cells. Recently, microRNAs (miRs) were found to control expression and activity of chemokines in ECs, vascular smooth muscle cells (VSMCs), and macrophages at different steps of atherogenesis...
April 19, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28424619/retinal-and-circulating-mirnas-in-age-related-macular-degeneration-an-in-vivo-animal-and-human-study
#4
Giovanni L Romano, Chiara B M Platania, Filippo Drago, Salvatore Salomone, Marco Ragusa, Cristina Barbagallo, Cinzia Di Pietro, Michele Purrello, Michele Reibaldi, Teresio Avitabile, Antonio Longo, Claudio Bucolo
Age related macular degeneration (AMD) is the leading cause of blindness among people aged 50 and over. Retinal deposition of amyloid-β (Aβ) aggregates in AMD patients has suggested a potential link between AMD and Alzheimer's disease (AD). We have evaluated the differential retinal expression profile of miRNAs in a rat model of AMD elicited by Aβ. A serum profile of miRNAs in AMD patients has been also assessed using single TaqMan assay. Analysis of retina from rats intravitreally injected with Aβ revealed that miR-27a, miR-146a, and miR-155 were up-regulated in comparison to control rats...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28423578/endothelial-microparticles-delivering-microrna-155-into-t-lymphocytes-are-involved-in-the-initiation-of-acute-graft-versus-host-disease-following-allogeneic-hematopoietic-stem-cell-transplantation
#5
Ran Zhang, Xiaoxiao Wang, Mei Hong, Ting Luo, Miaomiao Zhao, Haorui Shen, Jun Fang, Xiaojie Li, Sibin Zang, Ping Chen, Dimin Nie, Peng Zheng, Qiuling Wu, Linghui Xia
Endothelial microparticles (EMPs) upregulation has been observed in acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). However, the role of EMPs remains unclear. We found that EMPs derived from TNF-α-stimulated human umbilical vein endothelial cells (EA.hy926) concentrated more microRNA-155 (miR-155) compared with maternal cells. The miR-155 levels in MPs from peripheral blood of aGVHD patients and mice were remarkably elevated and significantly higher than the levels in plasma...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421078/genetic-association-of-hematopoietic-stem-cell-transplantation-outcome-beyond-histocompatibility-genes
#6
REVIEW
Rihab Gam, Pranali Shah, Rachel E Crossland, Jean Norden, Anne M Dickinson, Ralf Dressel
The outcome of hematopoietic stem cell transplantation (HSCT) is controlled by genetic factors among which the leukocyte antigen human leukocyte antigen (HLA) matching is most important. In addition, minor histocompatibility antigens and non-HLA gene polymorphisms in genes controlling immune responses are known to contribute to the risks associated with HSCT. Besides single-nucleotide polymorphisms (SNPs) in protein coding genes, SNPs in regulatory elements such as microRNAs (miRNAs) contribute to these genetic risks...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28418858/the-mir-124-p63-feedback-loop-modulates-colorectal-cancer-growth
#7
Kuijie Liu, Hongliang Yao, Sanlin Lei, Li Xiong, Haizhi Qi, Ke Qian, Jiqiang Liu, Peng Wang, Hua Zhao
Among the diverse co-regulatory relationships between transcription factors (TFs) and microRNAs (miRNAs), feedback loops have received the most extensive research attention. The co-regulation of TFs and miRNAs plays an important role in colorectal cancer (CRC) growth. Here, we show that miR-124 can regulate two isoforms of p63, TAp63 and ΔNp63, via iASPP, while p63 modulates signal transducers and activators of transcription 1 (STAT1) expression by targeting miR-155. Moreover, STAT1 acts as a regulator of CRC growth by targeting miR-124...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412211/serum-mir-21-and-mir-125b-as-markers-predicting-neoadjuvant-chemotherapy-response-and-prognosis-in-stage-ii-iii-breast-cancer
#8
Baoquan Liu, Fei Su, Mingwei Chen, Yue Li, Xiuying Qi, Jianbing Xiao, Xuemei Li, Xiangchen Liu, Wenlong Liang, Yafang Zhang, Jianguo Zhang
The predictive value of serum miRNAs (ser-miRNA) for the response to neoadjuvant chemotherapy (NCT) and the prognosis of breast cancer patients was investigated in the current study. The study included 118 stage II/III breast cancer patients and 30 healthy adult women. Peripheral blood was drawn from participants before the start (baseline, BL), at the end of the second cycle (first evaluation during NCT, FEN), and at the end of NCT (second evaluation during NCT, SEN). The expression of ser-miRNAs was examined by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) and their association with chemotherapy response and prognosis was analyzed...
April 12, 2017: Human Pathology
https://www.readbyqxmd.com/read/28408180/exosome-mediated-mir-155-transfer-from-smooth-muscle-cells-to-endothelial-cells-induces-endothelial-injury-and-promotes-atherosclerosis
#9
Bin Zheng, Wei-Na Yin, Toru Suzuki, Xin-Hua Zhang, Yu Zhang, Li-Li Song, Li-Shuang Jin, Hong Zhan, Hong Zhang, Jin-Shui Li, Jin-Kun Wen
The vascular response to pro-atherosclerotic factors is a multifactorial process involving endothelial cells (ECs), macrophages (MACs), and smooth muscle cells (SMCs), although the mechanism by which these cell types communicate with each other in response to environmental cues is yet to be understood. Here, we show that miR-155, which is significantly expressed and secreted in Krüppel-like factor 5 (KLF5)-overexpressing vascular smooth muscle cells (VSMCs), is a potent regulator of endothelium barrier function through regulating endothelial targeting tight junction protein expression...
April 10, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28407516/quantitative-mir-analysis-in-chronic-lymphocytic-leukaemia-small-lymphocytic-lymphoma-proliferation-centres-are-characterized-by-high-mir-92a-and-mir-155-and-low-mir-150-expression
#10
Kinga Szurián, Irén Csala, Violetta Piurkó, Linda Deák, András Matolcsy, Lilla Reiniger
Proliferation centres (PCs) are histological hallmarks of lymph nodes in chronic lymphocytic leukaemia/small lymphocytic lymphoma (CLL/SLL). Chromosomal abnormalities have already been described to accumulate preferably in the PCs as opposed to the intervening small cell areas. To further characterize the pathogenic role of PCs, the expression levels of 17 selected miRs known to be involved in the development of CLL/SLL were compared in the PCs and the intervening small cell areas in lymph nodes of 15 patients with CLL/SLL...
April 4, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28407320/role-of-tlr4-and-mir-155-in-peripheral-blood-mononuclear-cell-mediated-inflammatory-reaction-in-coronary-slow-flow-and-coronary-arteriosclerosis-patients
#11
Jiangyan Huang, Qin Yang, Longmiao He, Jun Huang
BACKGROUND: To study the role of toll-like receptor 4 (TLR4) and MicroRNA-155 (miR-155) in the peripheral blood mononuclear cell (PBMC)-mediated inflammation in coronary slow flow (CSF) and coronary arteriosclerosis. METHODS: Patients were divided into acute coronary syndrome (ACS), stable angina pectoris (SAP), CSF, and healthy control (HC) groups. The isolated PBMCs were treated with lipopolysaccharide (LPS)/and antagomiR-155. TLR4, miR-155, and the concentrations of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1, and IL-10 were measured...
April 13, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28402921/mir-155-promotes-cell-proliferation-and-inhibits-apoptosis-by-pten-signaling-pathway-in-the-psoriasis
#12
Longjiang Xu, Hong Len, Xin Shi, Jiang Ji, Jinxiang Fu, Hong Len
MicroRNAs (miRNAs) have been demonstrated to contribute to malignant progression in psoriasis development. The purposes of the study was to evaluated the effects of miRNA-155 on cell proliferation, migration and apoptosis in psoriasis development via PTEN singaling pathway and identify its direct target protein. Quantitative real-time RT-PCR (qRT-PCR) was performed to examine the level of miR-155 in psoriasis cells, miR-155 was downregulated in a psoriasis cell line Hacat by transfected with small interfering RNA (siRNA), respectively...
April 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28401267/paeonol-protects-against-tnf-%C3%AE-induced-proliferation-and-cytokine-release-of-rheumatoid-arthritis-fibroblast-like-synoviocytes-by-upregulating-foxo3-through-inhibition-of-mir-155-expression
#13
Ning Liu, Xue Feng, Wenbo Wang, Xingkai Zhao, Xia Li
BACKGROUND: Fibroblast-like synoviocytes (FLS) play an essential role in the pathogenesis of chronic inflammatory diseases, such as rheumatoid arthritis. Paeonol (Pae) is a phenolic compound found in many traditional Chinese medicine remedies. However, the effects of Pae on TNF-α-stimulated FLS and the underlying molecular mechanism are unknown. In this study, we aimed to investigate the anti-proliferative and anti-inflammatory effect of Pae against activated FLS. MATERIALS AND METHODS: Rheumatoid arthritis FLS (RA-FLS) were pre-treated with different doses (25, 50, and 100 µM) of Pae or miR-155 inhibitor for 30 min or transfected with miR-155 mimic, and then treated with 50 ng/mL of tumor necrosis factor alpha (TNF-α) for 1 h...
April 11, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28398479/clinical-significance-of-mirna-host-gene-promoter-methylation-in-prostate-cancer
#14
Kristina Daniunaite, Monika Dubikaityte, Povilas Gibas, Arnas Bakavicius, Juozas Rimantas Lazutka, Albertas Ulys, Feliksas Jankevicius, Sonata Jarmalaite
Only a part of prostate cancer (PCa) patients has aggressive malignancy requiring adjuvant treatment after radical prostatectomy (RP). Biomarkers capable to predict biochemical PCa recurrence (BCR) after RP would significantly improve preoperative risk stratification and treatment decisions. MicroRNA (miRNA) deregulation has recently emerged as an important phenomenon in tumor development and progression, however, the mechanisms remain largely unstudied. In the present study, based on microarray profiling of DNA methylation in 9 pairs of PCa and noncancerous prostate tissues (NPT), host genes of miR-155-5p, miR-152-3p, miR-137, miR-31-5p, and miR-642a, -b were analyzed for promoter methylation in 129 PCa, 35 NPT, and 17 benign prostatic hyperplasia samples (BPH) and compared to the expression of mature miRNAs and their selected targets (DNMT1, KDM1A, and KDM5B)...
April 7, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28392443/enhanced-immunogenicity-following-mir-155-incorporation-into-the-influenza-a-virus-genome
#15
Leonard Izzard, Daniel Dlugolenski, Yingju Xia, Meagan McMahon, Deborah Middleton, Ralph A Tripp, John Stambas
Influenza A vaccine efficacy in the elderly is generally poor and so identification of novel molecular adjuvants to improve immunogenicity is important to reduce the overall burden of disease. Short non-coding RNAs, known as microRNAs (miRNAs) are known to regulate gene expression and have the potential to influence immune responses. One such miRNA, miR-155, has been shown to modulate T and B cell development and function. We incorporated miR-155 into the influenza A virus (IAV) genome creating a self-adjuvanting 'live vaccine' with the ability to modify immunogenicity...
April 6, 2017: Virus Research
https://www.readbyqxmd.com/read/28389511/epigenetic-regulation-of-kpc1-ubiquitin-ligase-effects-the-nf-%C3%AE%C2%BAb-pathway-in-melanoma
#16
Yuuki Iida, Aaron Ciechanover, Diego M Marzese, Keisuke Hata, Matias Bustos, Shigeshi Ono, Jinhua Wang, Matthew P Salomon, Kevin Tran, Stella Lam, Sandy C Hsu, Nellie Nelson, Yelena Kravtsova-Ivantsiv, Gordon B Mills, Michael A Davies, Dave Sb Hoon
PURPOSE: Abnormal activation of the NF-κB pathway induces a more aggressive phenotype of cutaneous melanoma. Understanding the mechanisms involved in melanoma NF-κB activation may identify novel targets for this pathway. KPC1, an E3 ubiquitin ligase, is a regulator of NF-κB pathway. The objective of this study was to investigate the mechanisms regulating KPC1 expression and its clinical impact in melanoma. EXPERIMENTAL DESIGN: The clinical impact of KPC1 expression and its epigenetic regulation were assessed in large cohorts of clinically well-annotated melanoma tissues (tissue micro-arrays; n=137, JWCI cohort; n=40) and The Cancer Genome Atlas database (TCGA cohort, n=370)...
April 7, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28371892/blocking-mir155hg-mir-155-axis-inhibits-mesenchymal-transition-in-glioma
#17
Xuechao Wu, Yingyi Wang, Tianfu Yu, Er Nie, Qi Hu, Weining Wu, Tongle Zhi, Kuan Jiang, Xiefeng Wang, Xiaojie Lu, Hailin Li, Ning Liu, Junxia Zhang, Yongping You
Background.: MIR155 host gene (MIR155HG) is a long noncoding RNA that has been considered as the primary micro (mi)RNA of miR-155. MIR155HG plays an essential role in hematopoiesis, inflammation, and tumorigenesis. Our study investigated the clinical significance, biological function, mechanisms, and small-molecule inhibitors of the MIR155HG/miR-155 axis in glioma. Methods.: We analyzed the expression of the MIR155HG/miR-155 axis and the correlation with glioma grade and patient survival using 2 different glioma gene expression datasets...
March 24, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28360962/novel-immune-mechanisms-in-hypertension-and-cardiovascular-risk
#18
REVIEW
Ryszard Nosalski, Eilidh McGinnigle, Mateusz Siedlinski, Tomasz J Guzik
PURPOSE OF REVIEW: Hypertension is a common disorder with substantial impact on public health due to highly elevated cardiovascular risk. The mechanisms still remain unclear and treatments are not sufficient to reduce risk in majority of patients. Inflammatory mechanisms may provide an important mechanism linking hypertension and cardiovascular risk. We aim to review newly identified immune and inflammatory mechanisms of hypertension with focus on their potential therapeutic impact. RECENT FINDINGS: In addition to the established role of the vasculature, kidneys and central nervous system in pathogenesis of hypertension, low-grade inflammation contributes to this disorder as indicated by experimental models and GWAS studies pointing to SH2B3 immune gene as top key driver of hypertension...
2017: Current Cardiovascular Risk Reports
https://www.readbyqxmd.com/read/28359146/transforming-growth-factor-%C3%AE-1-smad4-signaling-affects-osteoclast-differentiation-via-regulation-of-mir-155-expression
#19
Hongying Zhao, Jun Zhang, Haiyu Shao, Jianwen Liu, Mengran Jin, Jinping Chen, Yazeng Huang
Transforming growth factor β1 (TGFβ1)/Smad4 signaling plays a pivotal role in maintenance of the dynamic balance between bone formation and resorption. The microRNA miR-155 has been reported to exert a significant role in the differentiation of macrophage and dendritic cells. The goal of this study was to determine whether miR-155 regulates osteoclast differentiation through TGFβ1/Smad4 signaling. Here, we present that TGFβ1 elevated miR-155 levels during osteoclast differentiation through the stimulation of M-CSF and RANKL...
March 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28355202/microrna-155-modulates-bile-duct-inflammation-via-targeting-suppressor-of-cytokine-signaling-1-in-biliary-atresia
#20
Rui Zhao, Rui Dong, Yifan Yang, Yuqing Wang, Jin Ma, Jiang Wang, Hao Li, Shan Zheng
BACKGROUND: Biliary atresia (BA) is an etiologically perplexing disease, manifested by neonatal cholestasis, repeated cholangitis, and progressive biliary fibrosis. MiR-155 has been implicated to modulate the immune response, which contributes to biliary injury. However, its potential role in the pathogenesis of BA has not been addressed so far. METHODS: The microRNA changes from BA patients and controls were identified via microarray. The immunomodulatory function of miR-155 was investigated via cell transfection and reporter assay system...
March 29, 2017: Pediatric Research
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