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miR-181a

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https://www.readbyqxmd.com/read/28315020/novel-biomarkers-for-non-functioning-invasive-pituitary-adenomas-were-identified-by-using-analysis-of-micrornas-expression-profile
#1
Silin Wu, Ye Gu, Yuying Huang, Tyh-Chai Wong, Hailin Ding, Tengfei Liu, Yu Zhang, Xiaobiao Zhang
The microRNAs (miRNAs) are involved in multiple pathological processes among various types of tumors. However, the functions of miRNAs in benign brain tumors are largely unexplored. In order to explore the pathogenesis of the invasiveness in non-functional pituitary adenoma (NFPA), the miRNAs expression profile was analyzed between invasive and non-invasive non-functional pituitary adenoma by miRNAs microarray. Six most significant differentially expressed miRNAs were identified including four upregulated miRNAs hsa-miR-181b-5p, hsa-miR-181d, hsa-miR-191-3p, and hsa-miR-598 and two downregulated miRNAs hsa-miR-3676-5p and hsa-miR-383...
March 17, 2017: Biochemical Genetics
https://www.readbyqxmd.com/read/28301325/circulating-mirnas-as-biomarkers-of-gait-speed-responses-to-aerobic-exercise-training-in-obese-older-adults
#2
Tan Zhang, Tina E Brinkley, Keqin Liu, Xin Feng, Anthony P Marsh, Stephen Kritchevsky, Xiaobo Zhou, Barbara J Nicklas
Gait speed is a useful predictor of adverse outcomes, including incident mobility disability and mortality in older adults. While aerobic exercise training (AEX) is generally an effective therapy to improve gait speed, individual responses are highly variable. Circulating microRNAs (miRNAs) may contribute to inter-individual changes in gait speed with AEX. We examined whether plasma miRNAs are associated with gait speed changes (dGaitSp) in 33 obese older adults (age: 69.3±3.6 years, BMI: 34.0±3.1 kg/m(2), 85% white, 73% women) who performed treadmill walking, 4 days/week for 5 months...
March 15, 2017: Aging
https://www.readbyqxmd.com/read/28288641/sox2-regulates-multiple-malignant-processes-of-breast-cancer-development-through-the-sox2-mir-181a-5p-mir-30e-5p-tusc3-axis
#3
Kuancan Liu, Fuan Xie, Anding Gao, Rui Zhang, Long Zhang, Zhangwu Xiao, Qiong Hu, Weifeng Huang, Qiaojia Huang, Baoshun Lin, Jian Zhu, Haikun Wang, Jianwen Que, Xiaopeng Lan
BACKGROUND: High levels of SOX2 protein are correlated with increased dissemination of breast cancer. However, the underlying molecular mechanisms are not fully understood. METHODS: In this study we investigate the role of SOX2 in breast cancer metastasis using multiple in vitro and in vivo assays including cell culture, shRNA-mediated knockdown, wound healing, colony formation, transwell chamber, xenograft and tail vein injection. Moreover, western blot, immunostaining, microarray and real-time PCR were used to determine the change of protein and miRNA levels...
March 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28275578/micrornas-for-the-prediction-of-early-response-to-sorafenib-treatment-in-human-hepatocellular-carcinoma
#4
Naoshi Nishida, Tadaaki Arizumi, Satoru Hagiwara, Hiroshi Ida, Toshiharu Sakurai, Masatoshi Kudo
BACKGROUND: Several studies suggest the role of circulating microRNAs (miRNAs) as biomarkers of hepatocellular carcinoma (HCC). However, the serum miRNA profile associated with the response to sorafenib remains to be elucidated. The aim of this study was to clarify the specific miRNAs in serum that could predict the early response of HCC to sorafenib treatment. SUMMARY: Analyzing the sera from 16 HCC patients, we selected five miRNAs that showed differences in serum levels between patients with and without tumor responses among 179 known secretory miRNAs by using locked nucleic acid probe-based quantitative PCR...
February 2017: Liver Cancer
https://www.readbyqxmd.com/read/28265775/altered-microrna-expression-patterns-during-the-initiation-and-promotion-stages-of-neonatal-diethylstilbestrol-induced-dysplasia-neoplasia-in-the-hamster-mesocricetus-auratus-uterus
#5
Ramesh Padmanabhan, Isabel R Hendry, Jennifer R Knapp, Bin Shuai, William J Hendry
Treatment of Syrian hamsters on the day of birth with the prototypical endocrine disruptor and synthetic estrogen, diethylstilbestrol (DES), leads to 100% occurrence of uterine hyperplasia/dysplasia in adulthood, a large proportion of which progress to neoplasia (endometrial adenocarcinoma). Consistent with our prior gene expression analyses at the mRNA and protein levels, we now report (based on microarray, real-time polymerase chain reaction, and in situ hybridization analyses) that progression of the neonatal DES-induced dysplasia/neoplasia phenomenon in the hamster uterus also includes a spectrum of microRNA expression alterations (at both the whole-organ and cell-specific level) that differ during the initiation (upregulated miR-21, 200a, 200b, 200c, 29a, 29b, 429, 141; downregulated miR-181a) and promotion (downregulated miR-133a) stages of the phenomenon...
March 6, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28251236/distinctive-expression-signatures-of-serum-micrornas-in-ischaemic-stroke-and-transient-ischaemic-attack-patients
#6
Jia Wu, Chun-Li Fan, Li-Juan Ma, Ting Liu, Cheng Wang, Jia-Xi Song, Qiu-Shi Lv, Hao Pan, Chun-Ni Zhang, Jun-Jun Wang
Circulating microRNAs (miRNAs) have recently emerged as promising biomarkers for ischaemic stroke (IS). However, the expression patterns of specific miRNAs in transient ischaemic attack (TIA) patients have not been investigated. Their predictive values for the presence of IS and TIA and their relationships to the neurological deficit severity of IS and the subsequent stroke risk after TIA remain unclear exactly. In this study, 754 miRNAs were initially screened by the TaqMan Low Density Array (TLDA) in two pooled serum samples from 50 IS patients and 50 controls...
March 2, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28245171/mir-181a-inhibits-cervical-cancer-development-via-downregulating-grp78
#7
Chengyan Luo, Jiangnan Qiu
Cervical is among one of the top common cancers of women worldwide. Understanding the pathological mechanisms of cervical cancer development is critical for identifying novel targets for cervical cancer treatment. microRNAs (miRs) have various roles in regulating cancer development. Here, we investigated the potential roles of miR-181a and its target in regulating cervical cancer development and chemotherapy resistance. Expression of miR-181a was evaluated and modulated in several human cervical cancer cell lines...
February 13, 2017: Oncology Research
https://www.readbyqxmd.com/read/28242633/divergent-effects-of-mir-181-family-members-on-myocardial-function-through-protective-cytosolic-and-detrimental-mitochondrial-microrna-targets
#8
Samarjit Das, Mark Kohr, Brittany Dunkerly-Eyring, Dong I Lee, Djahida Bedja, Oliver A Kent, Anthony K L Leung, Jorge Henao-Mejia, Richard A Flavell, Charles Steenbergen
BACKGROUND: MicroRNA (miRNA) is a type of noncoding RNA that can repress the expression of target genes through posttranscriptional regulation. In addition to numerous physiologic roles for miRNAs, they play an important role in pathophysiologic processes affecting cardiovascular health. Previously, we reported that nuclear encoded microRNA (miR-181c) is present in heart mitochondria, and importantly, its overexpression affects mitochondrial function by regulating mitochondrial gene expression...
February 27, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28236575/unravelling-endogenous-microrna-system-dysfunction-as-a-new-pathophysiological-mechanism-in-machado-joseph-disease
#9
Vitor Carmona, Janete Cunha-Santos, Isabel Onofre, Ana Teresa Simões, Udaya Vijayakumar, Beverly L Davidson, Luís Pereira de Almeida
Machado-Joseph disease (MJD) is a genetic neurodegenerative disease caused by an expanded polyglutamine tract within the protein ataxin-3 (ATXN3). Despite current efforts, MJD's mechanism of pathogenesis remains unclear and no disease-modifying treatment is available. Therefore, in this study, we investigated (1) the role of the 3' UTR of ATXN3, a putative microRNA (miRNA) target, (2) whether miRNA biogenesis and machinery are dysfunctional in MJD, and (3) which specific miRNAs target ATXN3-3' UTR and whether they can alleviate MJD neuropathology in vivo...
February 21, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28224609/mir-181-elevates-akt-signaling-by-co-targeting-phlpp2-and-inpp4b-phosphatases-in-luminal-breast-cancer
#10
Michaela Strotbek, Simone Schmid, Ismael Sànchez-Gonzàlez, Melanie Boerries, Hauke Busch, Monilola A Olayioye
The PI3K-Akt pathway is one of the most commonly dysregulated cancer-associated signaling pathways. Here we report an oncogenic function for the miR-181 family in luminal breast cancer cells that involves Akt hyperactivation. We show that miR-181a and miR-181d post-transcriptionally suppress the expression of PHLPP2 and INPP4B phosphatases, resulting in elevated growth factor-induced Akt phosphorylation. Ectopic expression of miR-181a and miR-181d promoted S-phase entry and cell proliferation, which was reversed by pharmacological Akt inhibition...
February 22, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28192189/mir-425-regulates-inflammatory-cytokine-production-in-cd4-t-cells-via-n-ras-upregulation-in-primary-biliary-cholangitis
#11
Ryo Nakagawa, Ryosuke Muroyama, Chisato Saeki, Kaku Goto, Yoshimi Kaise, Kazuhiko Koike, Masanori Nakano, Yasuo Matsubara, Keiko Takano, Sayaka Ito, Masayuki Saruta, Naoya Kato, Mikio Zeniya
BACKGROUND & AIMS: Primary biliary cholangitis (PBC) is an autoimmune liver disease of unknown pathogenesis. Consequently, therapeutic targets for PBC have yet to be identified. CD4(+) T cells play a pivotal role in immunological dysfunction observed in PBC, and therefore, microRNA (miRNA) and mRNA expression were analysed in CD4(+) T cells, to investigate PBC pathogenesis and identify novel therapeutic targets. METHODS: Integral miRNA and mRNA analysis of 14 PBC patients and ten healthy controls was carried out using microarray and quantitative real-time polymerase chain reaction (qRT-PCR), with gene set enrichment analysis...
February 10, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28184923/mir-181a-5p-an-inducer-of-wnt-signaling-facilitates-cell-proliferation-in-acute-lymphoblastic-leukemia
#12
Xiaoming Lyu, Jinbang Li, Xi Yun, Rui Huang, Xubin Deng, Yingping Wang, Youming Chen, Gang Xiao
Uncontrolled Wnt signaling causes leukemia. Inactivation of Wnt antagonists could play an important role in leukemia progression by activating the Wnt/β-catenin pathway. Wnt inhibitory factor-1 (WIF1) is one of the important Wnt antagonists. Few miRNAs have been reported to directly target this gene in hematopoiesis. Here, we observed that miR-181a-5p expression was markedly overexpressed in several leukemia cell lines and acute lymphoblastic leukemia (ALL) samples compared with that noted in normal peripheral blood mononuclear cells...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/28181149/genome-wide-sequencing-reveals-micrornas-downregulated-in-cerebral-cavernous-malformations
#13
Souvik Kar, Kiran Kumar Bali, Arpita Baisantry, Robert Geffers, Amir Samii, Helmut Bertalanffy
Cerebral cavernous malformations (CCM) are vascular lesions associated with loss-of-function mutations in one of the three genes encoding KRIT1 (CCM1), CCM2, and PDCD10. Recent understanding of the molecular mechanisms that lead to CCM development is limited. The role of microRNAs (miRNAs) has been demonstrated in vascular pathologies resulting in loss of tight junction proteins, increased vascular permeability and endothelial cell dysfunction. Since the relevance of miRNAs in CCM pathophysiology has not been elucidated, the primary aim of the study was to identify the miRNA-mRNA expression network associated with CCM...
February 8, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28168095/identification-of-four-potential-predicting-mirna-biomarkers-for-multiple-myeloma-from-published-datasets
#14
Tian Xiang, Ai-Xin Hu, Peng Sun, Gao Liu, Gang Liu, Yan Xiao
BACKGROUND: Multiple myeloma is a cancer which has a high occurrence rate and causes great injury to people worldwide. In recent years, many studies reported the effects of miRNA on the appearance of multiple myeloma. However, due to the differences of samples and sequencing platforms, a large number of inconsistent results have been generated among these studies, which limited the cure of multiple myeloma at the miRNA level. METHODS: We performed meta-analyses to identify the key miRNA biomarkers which could be applied on the treatment of multiple myeloma...
2017: PeerJ
https://www.readbyqxmd.com/read/28145491/altered-expression-of-mir-181a-and-mir-146a-does-not-change-the-expression-of-surface-ncrs-in-human-nk-cells
#15
Mona Rady, Carsten Watzl, Maren Claus, Ola Khorshid, Laila Mahran, Khaled Abou-Aisha
MicroRNAs (miRNAs) play an important role in regulating gene expression and immune responses. Of interest, miR-181a and miR-146a are key players in regulating immune responses and are among the most abundant miRNAs expressed in NK cells. Bioinformatically, we predicted miR-181a to regulate the expression of the natural cytotoxicity receptor NCR2 by seeded interaction with the 3'-untranslated region (3'-UTR). Whereas, miR-146a expression was not significantly different (P = 0.7361), miR-181a expression was, on average 10-fold lower in NK cells from breast cancer patients compared to normal subjects; P < 0...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28133358/1-25-dihydroxyvitamin-d3-does-not-affect-microrna-expression-when-suppressing-human-th17-differentiation
#16
Jian Huang, Zibin Liang, Ying Kuang, Fujie Jia, Yaqi Yang, Miaomiao Kang, Muke Xie, Feng Li
BACKGROUND Vitamin D is an import regulator of T helper 17 (Th17) differentiation, but our understanding of the underlying mechanisms remains limited. In the present study, we aimed to detect the expression levels of microRNAs (miRNAs) during human Th17 differentiation and evaluate the effects of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), the bioactive form of vitamin D, on Th17 differentiation and miRNA expression. MATERIAL AND METHODS We cultured human peripheral blood mononuclear cells (PBMC) in vitro and activated them with anti-CD3 and anti-CD28 antibodies in the presence of Th17-promoting cytokines interleukin (IL)-23, IL-1β, TGF-β1, and IL-6 for 72 hours...
January 30, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28131804/downregulation-of-autophagy-related-gene-atg5-and-gabarap-expression-by-ifn-%C3%AE-1-contributes-to-its-anti-hcv-activity-in-human-hepatoma-cells
#17
Xu Li, Yu Li, Shoucai Fang, Jinming Su, Junjun Jiang, Bingyu Liang, Jiegang Huang, Bo Zhou, Ning Zang, Wenzhe Ho, Jieliang Li, Yiping Li, Hui Chen, Li Ye, Hao Liang
Type-III interferon (IFN-λ), the most recently discovered family of IFNs, shares common features with type I IFNs, but also has many distinctive activities. It is not clear that whether IFN-λ has additional antiviral mechanisms. In this study, we investigated the effects of IFN-λ on autophagy, a cellular process closely related to hepatitis C virus (HCV) infection in human hepatoma Huh7 cells. Our results showed that IFN-λ1 treatment inhibit autophagic activity in Huh7 cells, as evidenced by the decreased expression of microtubule-associated protein 1 light chain 3B (LC3B)-II and conversion of LC3B-I to LC3B-II, decreased formation of GFP-LC3 puncta and accumulation of autophagosomes...
April 2017: Antiviral Research
https://www.readbyqxmd.com/read/28121023/lncrna-casc2-interacts-with-mir-181a-to-modulate-glioma-growth-and-resistance-to-tmz-through-pten-pathway
#18
Liao Yiwei, Shen Liangfang, Zhao Haiting, Liu Qing, Fu Jun, Guo Yong, Peng Renjun, Cheng Lei
Temozolomide (TMZ)-based chemotherapy is a standard strategy for glioma, while chemoresistance remains a major therapeutic challenge. Recent evidence highlights the crucial regulatory roles of long non-coding RNAs (lncRNA) in tumor biology. However, the roles and regulatory mechanisms of lncRNA cancer susceptibility candidate 2 (CASC2), in glioma tumorigenesis and chemoresistance are poorly understood. In this study, CASC2 expression was down-regulated in glioma tissues and cell lines, and was related to a clinicopathologic features and shorter survival time...
January 25, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28119261/roles-of-micrornas-in-immunopathogenesis-of-non-alcoholic-fatty-liver-disease-revealed-by-integrated-analysis-of-microrna-and-mrna-expression-profiles
#19
Yu-Jun Zhang, Ying Hu, Jing Li, Yu-Jing Chi, Wei-Wei Jiang, Feng Zhang, Yu-Lan Liu
BACKGROUND: The integrative analysis of microRNA and mRNA expression profiles can elucidate microRNA-targeted gene function. We used this technique to elucidate insights into the immunological pathology of non-alcoholic fatty liver disease (NAFLD). METHODS: We analyzed differentially expressed microRNA and mRNA expression profiles of CD4+ T lymphocytes from the liver and mesenteric lymph nodes (MLNs) of mice with NAFLD using microarrays and RNA sequencing. Normal mice were used as controls...
February 2017: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/28105518/associations-between-hepatic-mirna-expression-liver-triacylglycerols-and-gut-microbiota-during-metabolic-adaptation-to-high-fat-diet-in-mice
#20
Vincent Blasco-Baque, Berengère Coupé, Aurelie Fabre, Sandra Handgraaf, Pierre Gourdy, Jean-François Arnal, Michael Courtney, Carole Schuster-Klein, Beatrice Guardiola, François Tercé, Rémy Burcelin, Matteo Serino
AIMS/HYPOTHESIS: Despite the current pandemic of metabolic diseases, our understanding of the diverse nature of the development of metabolic alterations in people who eat a high-fat diet (HFD) is still poor. We recently demonstrated a cardio-metabolic adaptation in mice fed an HFD, which was characterised by a specific gut and periodontal microbiota profile. Since the severity of hepatic disease is characterised by specific microRNA (miRNA) signatures and the gut microbiota is a key driver of both hepatic disease and miRNA expression, we analysed the expression of three hepatic miRNA and studied their correlation with hepatic triacylglycerol content and gut microbiota...
January 19, 2017: Diabetologia
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