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miR-200b

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https://www.readbyqxmd.com/read/28816269/-microrna-differential-expression-profile-in-tuberous-sclerosis-complex-cell-line-tsc2-mefs-and-normal-cell-line-tsc2-mefs
#1
Y Cai, H Guo, H Z Li, W D Wang, Y S Zhang
OBJECTIVE: Tuberous sclerosis complex (TSC) is a multisystem genetic disorder caused by mutations in the TSC1 and TSC2 genes, but the molecular events contributing to TSC are not well understood. However, little is known about the role of microRNAs in TSC. To explore the microRNA differential expression profile between tuberous sclerosis complex cell line TSC2(-/-) MEFs and normal type cell line TSC2(+/+) MEFs, and to provide new clues to study the mechanism of microRNA function in tuberous sclerosis complex...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28810639/microrna-200b-inhibits-pituitary-tumor-cell-proliferation-and-invasion-by-targeting-pkc%C3%AE
#2
Yuanchuan Wang, Xiaohong Yin, Long Zhao, Shun Li, Jie Duan, Renzhao Kuang, Junwei Duan
The present study aimed to investigate the expression of miR-200b and protein kinase Cα (PKCα) in pituitary tumors and to determine whether miR-200b may inhibit proliferation and invasion of pituitary tumor cells. The regulation of PKCα expression was targeted in order to find novel targets for the treatment of pituitary tumors. In total, 53 pituitary tumor tissue samples were collected; these included 28 cases of invasive pituitary tumors and 25 cases of non-invasive tumors, in addition to 5 normal pituitaries...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809863/dynamic-plasma-micrornas-are-biomarkers-for-prognosis-and-early-detection-of-recurrence-in-colorectal-cancer
#3
Zixu Yuan, Kelsey Baker, Mary W Redman, Lei Wang, Scott V Adams, Ming Yu, Brandon Dickinson, Karen Makar, Neli Ulrich, Jürgen Böhm, Michelle Wurscher, Maria Westerhoff, Steve Medwell, Ravi Moonka, Mika Sinanan, Alessandro Fichera, Kathy Vickers, William M Grady
BACKGROUND: Plasma microRNAs (miRNAs) are promising non-invasive biomarkers for colorectal cancer (CRC) prognosis. However, the published studies to date have yielded conflicting and inconsistent results for specific plasma miRNAs. METHODS: We have conducted a study using robust assays to assess a panel of nine miRNAs for CRC prognosis and early detection of recurrence. Plasma samples from 144 patients in a prospective CRC cohort study were collected at diagnosis, 6, 12, and 24 months after diagnosis...
August 15, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28797712/estrogen-receptor-beta-as-epigenetic-mediator-of-mir-10b-and-mir-145-in-mammary-cancer
#4
Zoi Piperigkou, Marco Franchi, Martin Götte, Nikos K Karamanos
Even though the role of estrogen receptor alpha (ERα) in the modulation of breast cancer cells' behavior is thoroughly studied, the biological functions of its isoform, ERβ, are less elucidated. The suppression of ERβ in the aggressive ERα-negative MDA-MB-231 breast cancer cells resulted in the inhibition of epithelial to mesenchymal transition (EMT) and major changes in the basic functional properties and expression levels of certain matrix components of breast cancer cells. This arrest in metastatic potential of breast cancer cells suggests the contribution of ERβ in the induction of a more aggressive phenotype in MDA-MB-231 breast cancer cells...
August 8, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28743913/microrna-200b-regulates-distal-airway-development-by-maintaining-epithelial-integrity
#5
Naghmeh Khoshgoo, Robin Visser, Landon Falk, Chelsea A Day, Dustin Ameis, Barbara M Iwasiow, Fuqin Zhu, Arzu Öztürk, Sujata Basu, Molly Pind, Agnes Fresnosa, Mike Jackson, Vinaya Kumar Siragam, Gerald Stelmack, Geoffrey G Hicks, Andrew J Halayko, Richard Keijzer
miR-200b plays a role in epithelial-to-mesenchymal transition (EMT) in cancer. We recently reported abnormal expression of miR-200b in the context of human pulmonary hypoplasia in congenital diaphragmatic hernia (CDH). Smaller lung size, a lower number of airway generations, and a thicker mesenchyme characterize pulmonary hypoplasia in CDH. The aim of this study was to define the role of miR-200b during lung development. Here we show that miR-200b(-/-) mice have abnormal lung function due to dysfunctional surfactant, increased fibroblast-like cells and thicker mesenchyme in between the alveolar walls...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28732387/the-micrornas-mir-200b-3p-and-mir-429-5p-target-the-limk1-cfl1-pathway-to-inhibit-growth-and-motility-of-breast-cancer-cells
#6
Dengfeng Li, Hong Wang, Hongming Song, Hui Xu, Bingkun Zhao, Chenyang Wu, Jiashu Hu, Tianqi Wu, Dan Xie, Junyong Zhao, Qiang Shen, Lin Fang
Triple-negative breast cancer (TNBC) has the worst prognosis of all subtypes of breast cancer (BC), with limited options for conventional therapy and no targeted therapies. MicroRNAs (miRNAs) are small noncoding RNAs that negatively regulate gene expression. In this study, we aimed to determine whether two members of the miR-200 family, miR-200b-3p and miR-429-5p, are involved in BC cell proliferation and motility and to elucidate their target genes and pathways. We performed a meta-analysis that reveals down-regulated expression of miR-200b-3p and miR-429-5p in BC tissues and cell lines, consistent with a lower expression of miR-200b-3p and miR-429-5p in MDA-MB-231 and HCC1937 cells than in MCF-7 and MCF-10 cells...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731781/lncrna-pvt1-facilitates-invasion-through-upregulation-of-mmp9-in-nonsmall-cell-lung-cancer-cell
#7
Wei Chen, Huayun Zhu, Li Yin, Tingting Wang, Jianfeng Wu, Jianhua Xu, Hua Tao, Juying Liu, Xia He
Lung cancer is the most common solid tumor around the world. It has been reported that upregulation of long noncoding RNA (lncRNA) plasmacytoma variant translocation 1 (lncRNA-PVT1) is closely associated with tumor metastasis. However, the function and underlying molecular mechanism of lncRNA-PVT1 in nonsmall cell lung cancer (NSCLC) invasion remain unknown. In this study, we found that overexpression of lncRNA-PVT1 promoted the invasive ability of NSCLC cells, whereas silence of lncRNA-PVT1 suppressed cell invasion...
July 21, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28707489/evaluation-of-microrna-responses-in-arpe-19-cells-against-the-oxidative-stress
#8
Lokman Ayaz, Erdem Dinç
PURPOSE: This study aimed to determine microRNA (miRNA) expression profile of human retinal pigment epithelium cell (ARPE-19) against the oxidative stress induced by hydrogen peroxide (H2O2). METHODS: ARPE-19 cells were incubated with different concentrations of H2O2 (200, 600 and 800 µM) for 18 hours, and then cell viability, vascular endothelial growth factor levels and total oxidant status were evaluated. Expressions of 1152 miRNA were determined by quantitative Real-Time PCR in each group...
July 14, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28704808/enhanced-reactive-oxygen-species-production-acidic-cytosolic-ph-and-upregulated-na-h-exchanger-nhe-in-dicer-deficient-cd4-t-cells
#9
Yogesh Singh, Yuetao Zhou, Shaqiu Zhang, Khalid N M Abdelazeem, Bernat Elvira, Madhuri S Salker, Florian Lang
BACKGROUND: MicroRNAs (miRNAs) negatively regulate gene expression at a post-transcriptional level. Dicer, a cytoplasmic RNase III enzyme, is required for the maturation of miRNAs from precursor miRNAs. Dicer, therefore, is a critical enzyme involved in the biogenesis and processing of miRNAs. Several biological processes are controlled by miRNAs, including the regulation of T cell development and function. T cells generate reactive oxygen species (ROS) with parallel H+ extrusion accomplished by the Na+/H+-exchanger 1 (NHE1)...
July 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28695771/microrna-200b-suppresses-the-invasion-and-migration-of-hepatocellular-carcinoma-by-downregulating-rhoa-and-circrna_000839
#10
Ben-Gang Wang, Jun-Shuai Li, Yong-Feng Liu, Qian Xu
MicroRNAs could mediate the targeted coding gene and the targeted non-coding RNA to form endogenous competition, which have an important regulatory role in tumorigenesis of many types of cancer, including hepatocellular carcinoma. The goal of this study was to characterize the role of miR-200b in the pathogenesis of hepatocellular carcinoma. We identified miR-200b that was predicted to regulate RhoA and circ_000839. Our data establish that miR-200b is expressed at a relatively low level in hepatocellular carcinoma ( p < 0...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28692034/mir-200b-inhibits-proliferation-and-metastasis-of-breast-cancer-by-targeting-fucosyltransferase-iv-and-%C3%AE-1-3-fucosylated-glycans
#11
Q Zheng, X Cui, D Zhang, Y Yang, X Yan, M Liu, B Niang, F Aziz, S Liu, Q Yan, J Liu
Aberrant protein fucosylation is associated with cancer malignancy. Fucosyltransferase IV (FUT4) is the key enzyme catalyzing the biosynthesis of α1,3-linkage fucosylated glycans carried by glycoproteins on the cell surface, such as the tumor-associated sugar antigen Lewis Y (LeY). An abnormal increase in the levels of FUT4 and LeY is observed in many cancers and correlated with cell proliferation and metastasis. Some microRNAs (miRNAs) are known to negatively regulate gene expression. FUT4 is an oncogenic glycogene, and thus it is important to identify the specific miRNA targeting FUT4...
July 10, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28689512/circulating-mir-23b-3p-mir-145-5p-and-mir-200b-3p-are-potential-biomarkers-to-monitor-acute-pain-associated-with-laminitis-in-horses
#12
C Lecchi, E Dalla Costa, D Lebelt, V Ferrante, E Canali, F Ceciliani, D Stucke, M Minero
Circulating microRNAs (miRNAs) are emerging as promising biomarkers for several disorders and related pain. In equine practice, acute laminitis is a common disease characterised by intense pain that severely compromises horse welfare. Recently, the Horse Grimace Scale (HGS), a facial expression-based pain coding system, was shown to be a valid welfare indicator to identify pain linked to acute laminitis. The present study aimed to: determine whether miRNAs can be used as biomarkers for acute pain in horses (Equus caballus) affected by laminitis; integrate miRNAs to their target genes and to categorise target genes for biological processes; gather additional evidence on concurrent validity of HGS by investigating how it correlates to miRNAs...
July 10, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28681200/microrna-expression-signature-of-methamphetamine-use-and-addiction-in-the-rat-nucleus-accumbens
#13
Maw Shin Sim, Tomoko Soga, Vijayapandi Pandy, Yuan Seng Wu, Ishwar S Parhar, Zahurin Mohamed
Methamphetamine (METH) is a highly addictive psycho-stimulant that induces behavioral changes due to high level of METH-induced dopamine in the brain. Nucleus accumbens (NAc) plays an important role in these changes, especially in drug addiction. However, little is known about the underlying molecular mechanisms of METH-induced addiction. The objective of this study was to establish a behavioral model of METH use and addiction using escalating doses of METH over 15 days and to determine the global miRNA expression profiling in NAc of METH-addicted rats...
July 5, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28675303/plasma-mir-200b-3p-level-for-oral-squamous-cell-carcinoma-diagnosis
#14
Guo-Ming Zhang
No abstract text is available yet for this article.
July 4, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/28670496/resistance-to-cancer-chemotherapeutic-drugs-is-determined-by-pivotal-microrna-regulators
#15
Marta Geretto, Alessandra Pulliero, Camillo Rosano, Dinara Zhabayeva, Rakhmet Bersimbaev, Alberto Izzotti
Chemo-resistance, which is the main obstacle in cancer therapy, is caused by the onset of drug-resistant cells in the heterogeneous cell population in cancer tissues. MicroRNAs regulate gene expression at the post-transcriptional level, and they are involved in many different biological processes, including cell proliferation, differentiation, metabolism, stress response, and apoptosis. The aberrant expression of microRNAs plays a major pathogenic role from the early stages of the carcinogenesis process. Recently, microRNAs have been reported to play an important role in inducing resistance to anti-cancer drugs...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28656062/c-myc-is-required-for-braf-v600e-induced-epigenetic-silencing-by-h3k27me3-in-tumorigenesis
#16
Yiping Qu, Qi Yang, Juan Liu, Bingyin Shi, Meiju Ji, Gang Li, Peng Hou
BRAF(V600E) mutation is frequently found in human cancers particularly thyroid cancer and melanoma, and is involved in the regulation of gene expression through activating MAPK/Erk signaling. Trimethylation of histone 3 lysine 27 (H3K27me3) is a critical epigenetic mark for the maintenance of gene silencing in tumorigenesis. However, molecular mechanism underlying the complex interplay between these two molecular events remains to be explored. In the present study, we conducted chromatin immunoprecipitation combined with next-generation sequencing (ChIP-Seq) and expression microarray analysis in NIH3T3 cells to explore the relationship between H3K27me3 and transcriptional regulation by BRAF(V600E) mutation...
2017: Theranostics
https://www.readbyqxmd.com/read/28647188/mir-200a-and-mir-200b-target-pten-to-regulate-the-endometrial-cancer-cell-growth-in%C3%A2-vitro
#17
Qiang Wu, Ren-Lian Lu, Jing-Xiang Li, Li-Jun Rong
OBJECTIVE: To study whether miR-200a and miR-200b target PTEN gene expression to regulate the endometrial cancer cell growth in vitro. METHODS: Endometrial cancer cells ECC-1 were cultured and transfected with the miR-200a and miR-200b mimics and inhibitors as well as the negative control mimics and inhibitors, and then the cell proliferation activity as well as the expression of PTEN and downstream genes in cells was determined; after transfection of miR-200a and miR-200b mimics as well as PTEN-3'UTR luciferase report gene plasmids, the fluorescence activity of luciferase reporter gene was determined...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28640252/long-non-coding-rna-atb-promotes-malignancy-of-esophageal-squamous-cell-carcinoma-by-regulating-mir-200b-kindlin-2-axis
#18
Zhongwen Li, Xiaoliang Wu, Ling Gu, Qi Shen, Wen Luo, Chuangzhong Deng, Qianghua Zhou, Xinru Chen, Yanjie Li, ZuanFu Lim, Xing Wang, Jiahong Wang, Xianzi Yang
Esophageal squamous cell carcinoma (ESCC) is one of the leading causes of cancer-related death, especially in China. In addition, the prognosis of late stage patients is extremely poor. However, the biological significance of the long non-coding RNA lnc-ATB and its potential role in ESCC remain to be documented. In this study, we investigated the role of lnc-ATB and the underlying mechanism promoting its oncogenic activity in ESCC. Expression of lnc-ATB was higher in ESCC tissues and cell lines than that in normal counterparts...
June 22, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28634212/prolonged-darkness-reduces-liver-fibrosis-in-a-mouse-model-of-primary-sclerosing-cholangitis-by-mir-200b-down-regulation
#19
Nan Wu, Fanyin Meng, Tianhao Zhou, Yuyan Han, Lindsey Kennedy, Julie Venter, Heather Francis, Sharon DeMorrow, Paolo Onori, Pietro Invernizzi, Francesca Bernuzzi, Romina Mancinelli, Eugenio Gaudio, Antonio Franchitto, Shannon Glaser, Gianfranco Alpini
Melatonin therapy or prolonged exposure to complete darkness reduces biliary hyperplasia and liver fibrosis in bile-duct-ligated (BDL) rats; however, no information exists in primary sclerosing cholangitis (PSC). Thus, we aimed to determine the therapeutic effects of prolonged dark therapy or melatonin administration on hepatic fibrosis in the Mdr2(-/-) mouse model of PSC. Melatonin levels, biliary mass, liver fibrosis, angiogenesis and miR-200b expression were evaluated in wild-type and Mdr2(-/-) mice exposed to darkness or melatonin treatment or in male PSC patient samples and healthy controls...
June 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28632432/serum-micrornas-as-early-indicators-for-estimation-of-exposure-degree-in-response-to-ionizing-irradiation
#20
Wenjun Wei, Jinpeng He, Jufang Wang, Nan Ding, Bing Wang, Sulan Lin, Xurui Zhang, Junrui Hua, He Li, Burong Hu
Exposure to ionizing radiation from nuclear devices, spaceflights or terrorist attacks represents a major threat to human health and public security. After a radiological incident, noninvasive biomarkers that can facilitate rapid assessment of exposure risk in the early stages are urgently needed for optimal medical treatment. Serum microRNAs (miRNAs) are ideal biomarkers because they are stable in response to environmental changes, they are common among different species and are easily collected. Here, we performed miRNA PCR arrays to analyze miRNA expression profiles at 24 h postirradiation...
June 20, 2017: Radiation Research
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