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https://www.readbyqxmd.com/read/29054053/leptin-reduces-microrna-122-level-in-hepatic-stellate-cells-in-vitro-and-in-vivo
#1
Xuguang Zhai, Fangyun Cheng, Li Ji, Xiaofei Zhu, Qing Cao, Yali Zhang, Xin Jia, Qian Zhou, Wei Guan, Yajun Zhou
Obese patients, often accompanied by hyperleptinemia, are more likely to develop liver fibrosis. Leptin, an adipocyte-derived hormone, augments inflammatory in liver and promotes hepatic stellate cell (HSC) activation (a key step for liver fibrogenesis) and liver fibrosis. microRNA-122 (miR-122) is the most abundant liver-specific miRNA and can attenuate liver fibrosis. This study examined the effect of leptin on miR-122 level in HSCs in vivo and in vitro. Results demonstrated that leptin reduced the levels of both miR-122 (mature miR-122) and primary miR-122 (pri-miR-122)...
October 17, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29053755/micrornas-expression-profile-in-solid-and-unicystic-ameloblastomas
#2
A Setién-Olarra, X Marichalar-Mendia, N G Bediaga, P Aguirre-Echebarria, J M Aguirre-Urizar, A Mosqueda-Taylor
OBJECTIVES: Odontogenic tumors (OT) represent a specific pathological category that includes some lesions with unpredictable biological behavior. Although most of these lesions are benign, some, such as the ameloblastoma, exhibit local aggressiveness and high recurrence rates. The most common types of ameloblastoma are the solid/multicystic (SA) and the unicystic ameloblastoma (UA); the latter considered a much less aggressive entity as compared to the SA. The microRNA system regulates the expression of many human genes while its deregulation has been associated with neoplastic development...
2017: PloS One
https://www.readbyqxmd.com/read/29053417/hif-1%C3%AE-promotes-breast-cancer-cell-mcf-7-proliferation-and-invasion-through-regulating-mir-210
#3
Yang Zhang, Jinyin Yan, Lu Wang, Hao Dai, Ning Li, Wanning Hu, Haifeng Cai
OBJECTIVE: Many malignant tumors grow in hypoxic condition, which is associated with tumor growth, invasion, and metastasis. MicroRNAs are of great significance in the development of multiple malignant tumors. This study cultured breast cancer cell MCF-7 under the condition of different concentrations of oxygen, to test cell proliferation and invasion, and detect miR-210 expression, aiming to analyze the influence of hypoxia on breast cancer cell behaviors as well as miR-210 expressions...
October 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29053187/xist-promotes-gastric-cancer-gc-progression-through-tgf-%C3%AE-1-via-targeting-mir-185
#4
Quan Zhang, Baiyu Chen, Ping Liu, Jing Yang
LncRNAs and microRNAs can play significant roles in various cancers, including gastric cancer (GC). In our study, we investigated the role of lncRNA XIST in GC. We observed that XIST was increased in MGC803 and BGC823 cells compared to human normal gastric epithelial GES-1 cells. It was also shown that miR-185 was decreased in GC cell lines. Silencing XIST can inhibit the growth of GC cells and bioinformatics analysis was performed to confirm the correlation between XIST and miR-185. Interestingly, a negative correlation was indicated between XIST and miR-185 in GC cells...
October 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29053164/narrmda-negative-aware-and-rating-based-recommendation-algorithm-for-mirna-disease-association-prediction
#5
Lihong Peng, Yeqing Chen, Ning Ma, Xing Chen
An increasing amount of evidence indicates that microRNAs (miRNAs) are closely related to many important biological processes and play a significant role in various human diseases. More and more researchers have begun to seek effective methods to predict potential miRNA-disease associations. However, reliable computational methods to predict potential disease-related miRNAs are lacking. In this study, we developed a new miRNA-disease association prediction model called Negative-Aware and rating-based Recommendation algorithm for miRNA-Disease Association prediction (NARRMDA) based on the known miRNA-disease associations in the HMDD database, miRNA functional similarity, disease semantic similarity and Gaussian interaction profile kernel similarity...
October 20, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/29053138/mir-31a-5p-promotes-postnatal-cardiomyocyte-proliferation-by-targeting-rhobtb1
#6
Junjie Xiao, Hui Liu, Dragos Cretoiu, Daniela Oana Toader, Nicolae Suciu, Jing Shi, Shutong Shen, Yihua Bei, Joost Pg Sluijter, Saumya Das, Xiangqing Kong, Xinli Li
A limited number of microRNAs (miRNAs, miRs) have been reported to control postnatal cardiomyocyte proliferation, but their strong regulatory effects suggest a possible therapeutic approach to stimulate regenerative capacity in the diseased myocardium. This study aimed to investigate the miRNAs responsible for postnatal cardiomyocyte proliferation and their downstream targets. Here, we compared miRNA profiles in cardiomyocytes between postnatal day 0 (P0) and day 10 (P10) using miRNA arrays, and found that 21 miRNAs were upregulated at P10, whereas 11 were downregulated...
October 20, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29052839/effects-of-microrna-206-and-its-target-gene-igf-1-on-sevoflurane-induced-activation-of-hippocampal-astrocytes-in-aged-rats-through-the-pi3k-akt-creb-signaling-pathway
#7
Tie-Jun Liu, Bin Wang, Qun-Xi Li, Xiao-Liu Dong, Xiao-Liang Han, Shu-Bo Zhang
The study aims to explore the effects of microRNA-206 (miR-206) targeting IGF-1 on the activation of hippocampal astrocytes in aged rats induced by sevoflurane through the PI3K/AKT/CREB signaling pathway. Wistar rats and astrocytes were divided into the normal/blank, sham/negative control (NC), sevoflurane (sevo), miR-206 mimics + sevo, miR-206 inhibitors + sevo, miR-206 NC + sevo, IGF-1 shRNA + sevo and miR-206 inhibitors + IGF-1 shRNA + sevo groups. The Morris water maze test was exhibited to assess the cognitive functions...
October 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29052296/microrna-132-a-new-biomarker-of-heart-failure-at-last
#8
EDITORIAL
Cristina Panico, Gianluigi Condorelli
No abstract text is available yet for this article.
October 20, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29051990/clinicopathologic-implications-of-cd8-foxp3-ratio-and-mir-574-3p-pd-l1-axis-in-spinal-chordoma-patients
#9
Ming-Xiang Zou, Ke-Miao Guo, Guo-Hua Lv, Wei Huang, Jing Li, Xiao-Bin Wang, Yi Jiang, Xiao-Ling She
Currently, little is known about the interactions between microRNAs (miRNAs) and the PD-1/PD-L1 signaling pathway in chordoma, and data discussing the role of the immune milieu in chordoma prognosis are limited. We aimed to analyze the relationship between PD-L1, miR-574-3p, microenvironmental tumor-infiltrating lymphocytes (TILs) and clinicopathological features of spinal chordoma patients. PD-L1 expression and TILs (including Foxp3(+), CD8(+), PD-1(+) and PD-L1(+)) were assessed by immunohistochemistry in tumor specimens of 54 spinal chordoma patients...
October 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29051843/alterations-in-micro-rna-messenger-rna-mirna-mrna-coupled-signaling-networks-in-sporadic-alzheimer-s-disease-ad-hippocampal-ca1
#10
V Jaber, Y Zhao, W J Lukiw
RNA sequencing, DNA microfluidic array, LED-Northern, Western immunoassay and bioinformatics analysis have uncovered a small family of up-regulated human brain enriched microRNAs (miRNAs) and down-regulated messenger RNAs (mRNAs) in short post-mortem interval (PMI) sporadic Alzheimer's disease (AD) brain. At the mRNA level, a large majority of the expression of human brain genes found to be down-regulated in sporadic AD appears to be a consequence of an up-regulation of a specific group of NF-kB-inducible microRNAs (miRNAs)...
April 2017: Journal of Alzheimer's Disease and Parkinsonism
https://www.readbyqxmd.com/read/29051614/genome-wide-identification-of-micrornas-responsive-to-ectropis-oblique-feeding-in-tea-plant-camellia-sinensis-l
#11
Anburaj Jeyaraj, Shengrui Liu, Xiao Zhang, Ran Zhang, Mingzhu Shangguan, Chaoling Wei
The tea plant (Camellia sinensis L.) is vulnerable to the geometrid Ectropis oblique; although microRNAs (miRNAs) are important for plant growth, development and stress response, the function of miRNAs in the response of C. sinensis to stress from E. oblique is unclear. To identify E. oblique stress-responsive miRNAs and their target genes in tea plant, three small RNA libraries were constructed from leaves subjected to mechanical wounding (MW), geometrid attack (GA) and from healthy control (CK) leaves. Using high-throughput sequencing, 130 known miRNAs and 512 novel miRNAs were identified; of these, differential expression under GA stress was observed for 36 known and 139 novel miRNAs...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051585/mir-200c-regulates-tumor-growth-and-chemosensitivity-to-cisplatin-in-osteosarcoma-by-targeting-akt2
#12
Yang Liu, Shu-Tao Zhu, Xiao Wang, Jun Deng, Wei-Hua Li, Peng Zhang, Bing-Shan Liu
MicroRNAs (miRNAs) expression aberration has been discovered in almost all human cancers, thus offering a group of potential diagnostic markers, prognostic factors and therapeutic targets in tumorigenesis. Now our data showed that miR-200c, which is downregulated in osteosarcoma tissues, drives chemosensitivity to cisplatin in osteosarcoma. We demonstrated that AKT2 is a direct target of miR-200c, Spearman's rank correlation analysis showed that the expression levels of AKT2 and miR-200c in 35 pairs of osteosarcoma specimens were inversely correlated...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051564/network-analysis-of-emt-and-met-micro-rna-regulation-in-breast-cancer
#13
Diana Drago-García, Jesús Espinal-Enríquez, Enrique Hernández-Lemus
Over the last years, microRNAs (miRs) have shown to be crucial for breast tumour establishment and progression. To understand the influence that miRs have over transcriptional regulation in breast cancer, we constructed mutual information networks from 86 TCGA matched breast invasive carcinoma and control tissue RNA-Seq and miRNA-Seq sequencing data. We show that miRs are determinant for tumour and control data network structure. In tumour data network, miR-200, miR-199 and neighbour miRs seem to cooperate on the regulation of the acquisition of epithelial and mesenchymal traits by the biological processes: Epithelial-Mesenchymal Transition (EMT) and Mesenchymal to Epithelial Transition (MET)...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051527/micro-ribonucleic-acids-and-extracellular-vesicles-repertoire-in-the-spent-culture-media-is-altered-in-women-undergoing-in-vitro-fertilization
#14
Masood Abu-Halima, Sebastian Häusler, Christina Backes, Tobias Fehlmann, Claudia Staib, Sigrun Nestel, Irina Nazarenko, Eckart Meese, Andreas Keller
MicroRNAs (miRNAs) are class of small RNA molecules with major impact on gene regulation. We analyzed the potential of miRNAs secreted from pre-implantation embryos into the embryonic culture media as biomarkers to predict successful pregnancy. Using microarray analysis, we profiled the miRNome of the 56 spent culture media (SCM) after embryos transfer and found a total of 621 miRNAs in the SCM. On average, we detected 163 miRNAs in SCM of samples with failed pregnancies, but only 149 SCM miRNAs of embryos leading to pregnancies...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051494/mir-31-promotes-mammary-stem-cell-expansion-and-breast-tumorigenesis-by-suppressing-wnt-signaling-antagonists
#15
Cong Lv, Fengyin Li, Xiang Li, Yuhua Tian, Yue Zhang, Xiaole Sheng, Yongli Song, Qingyong Meng, Shukai Yuan, Liming Luan, Thomas Andl, Xu Feng, Baowei Jiao, Mingang Xu, Maksim V Plikus, Xing Dai, Christopher Lengner, Wei Cui, Fazheng Ren, Jianwei Shuai, Sarah E Millar, Zhengquan Yu
MicroRNA-mediated post-transcriptional regulation plays key roles in stem cell self-renewal and tumorigenesis. However, the in vivo functions of specific microRNAs in controlling mammary stem cell (MaSC) activity and breast cancer formation remain poorly understood. Here we show that miR-31 is highly expressed in MaSC-enriched mammary basal cell population and in mammary tumors, and is regulated by NF-κB signaling. We demonstrate that miR-31 promotes mammary epithelial proliferation and MaSC expansion at the expense of differentiation in vivo...
October 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/29051178/tlr4-mediated-inflammation-promotes-kshv-induced-cellular-transformation-and-tumorigenesis-by-activating-the-stat3-pathway
#16
Marion Gruffaz, Karthik Vasan, Brandon Tan, Suzane Ramos da Silva, Shou-Jiang Gao
Toll-like receptors (TLR) are conserved immune sensors mediating antimicrobial and antitumoral responses, but recent evidence implicates them in promoting carcinogenesis in certain cancers. Kaposi's sarcoma (KS) is caused by infection of Kaposi's sarcoma-associated herpesvirus (KSHV) and is characterized by uncontrolled neoangiogenesis and inflammation. Here we show that TLR4 is upregulated in KSHV-infected spindle tumor cells in human KS lesions. In a model of KSHV-induced cellular transformation, KSHV upregulated expression of TLR4, its adaptor MyD88, and coreceptors CD14 and MD2...
October 19, 2017: Cancer Research
https://www.readbyqxmd.com/read/29051037/serum-microrna-signature-predicts-response-to-high-dose-radiation-therapy-in-locally-advanced-non-small-cell-lung-cancer
#17
Yilun Sun, Peter G Hawkins, Nan Bi, Robert T Dess, Muneesh Tewari, Jason W D Hearn, James A Hayman, Gregory P Kalemkerian, Theodore S Lawrence, Randall K Ten Haken, Martha M Matuszak, Feng-Ming Kong, Shruti Jolly, Matthew J Schipper
PURPOSE: To assess the utility of circulating serum microRNAs (c-miRNAs) to predict response to high-dose radiation therapy for locally advanced non-small cell lung cancer (NSCLC). METHODS AND MATERIALS: Data from 80 patients treated from 2004 to 2013 with definitive standard- or high-dose radiation therapy for stages II-III NSCLC as part of 4 prospective institutional clinical trials were evaluated. Pretreatment serum levels of 62 miRNAs were measured by quantitative reverse transcription-polymerase chain reaction array...
September 4, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29050943/mir-67-regulates-p-aeruginosa-avoidance-behavior-in-c-elegans
#18
Yi-Cheng Ma, Lu Zhang, Li-Li Dai, Rahat Ullah Khan, Cheng-Gang Zou
Pathogen avoidance behaviors are found throughout the animal kingdom and are important for animal's survival in nature. As a free-living nematode, C. elegans is exposed to a variety of microorganisms, including toxic or pathogenic bacteria, in soil. C. elegans can develop efficient avoidance responses to pathogenic bacteria to minimize the infection risk. However, the role of microRNAs (miRNAs) in pathogen avoidance in C. elegans remains unclear. In this report, we showed that the miRNA mir-67 was involved in a behavioral avoidance response to P...
October 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29050938/tumor-suppressive-role-of-mir-1224-5p-in-keloid-proliferation-apoptosis-and-invasion-via-the-tgf-%C3%AE-1-smad3-signaling-pathway
#19
Xiaodong Yao, Xiaomei Cui, Xiaoyan Wu, Pan Xu, Wenyan Zhu, Xiaodong Chen, Tianlan Zhao
The molecular mechanism of the pathogenesis of keloids is still not known and the clinical management of keloids remains challenging. MiRNA (microRNA) is a novel class of small regulatory RNAs that has emerged as key post-transcriptional regulators of gene expression. MiRNAs participate in diverse biological processes of various skin diseases and function as key regulators in the occurrence and development of tumors. The purpose of this study was to investigate the involvement of miRNAs in keloid pathogenesis...
October 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29050481/microrna-497-suppress-osteosarcoma-by-targeting-mapk-erk-pathway
#20
Z L Gui, T L Wu, G C Zhao, Z X Lin, H G Xu
BACKGROUND: The aim of this study was to study the mechanism of miRNA-497 in the apoptosis of osteosarcoma cells. METHODS: MG-63 cells were divided into the three groups: NC, BL and miRNA groups, NC group were treated with nothing; BL group were transfected with blank vector; miRNA group were transfected with miRNA-497. Cell proliferation rate was detected by MTT method; Apoptosis rate was detected by flow cytometry and measuring the gene and protein expression of MAPK, Erk and P 21 by RT-PCR and Western blot...
2017: Bratislavské Lekárske Listy
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