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https://www.readbyqxmd.com/read/28103525/micrornas-in-ectodermal-appendages
#1
REVIEW
D'Juan T Farmer, Michael T McManus
The surface ectoderm is the source of ectodermal appendages including hair, teeth, and many glands. The development and function of ectodermal appendages has been researched extensively, but many of the molecular mechanisms that govern the developmental programs of ectodermal appendages remain elusive. While several protein-coding genes are established as key regulators of ectodermal appendage development, the role of noncoding RNAs is an emerging area of investigation. This review highlights recent advances in studies of microRNA-mediated control of ectodermal appendage development using mouse models...
January 16, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28103241/contextual-refinement-of-regulatory-targets-reveals-effects-on-breast-cancer-prognosis-of-the-regulome
#2
Erik Andrews, Yue Wang, Tian Xia, Wenqing Cheng, Chao Cheng
Gene expression regulators, such as transcription factors (TFs) and microRNAs (miRNAs), have varying regulatory targets based on the tissue and physiological state (context) within which they are expressed. While the emergence of regulator-characterizing experiments has inferred the target genes of many regulators across many contexts, methods for transferring regulator target genes across contexts are lacking. Further, regulator target gene lists frequently are not curated or have permissive inclusion criteria, impairing their use...
January 19, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28103112/potassium-iodate-differently-regulates-the-proliferation-migration-and-invasion-of-human-thyroid-cancer-cells-via-modulating-mir-146a
#3
Yan Liu, Hong Li, Jiayue Zhang, Xu Gao
The effects of different doses of potassium iodate (KIO3) on the malignancy of thyroid cancer were investigated. Results showed that the proliferation, migration, and invasion of SW579 thyroid cancer cells were improved by 10(-6) M KIO3, which was associated with microRNA(miR)-146a deficit; 10(-2) M KIO3 significantly enhanced miR-146a level and suppressed SW579 cell proliferation, migration, and invasion. The diverse effects of KIO3 on SW579 cells were associated with the expression changes in miR-146a targets, Bcl-2, Bax, and caspase-3...
January 19, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28102867/a-systems-approach-for-the-elucidation-of-crucial-genes-and-network-constituents-of-cervical-intraepithelial-neoplasia-1-cin1
#4
Shikha Suman, Ashutosh Mishra, Anurag Kulshrestha
Cervical intra-epithelial neoplasia 1 (CIN1) is a pre-cancerous cervical cancer condition characterized by changes in the squamous cells of the cervix. Early detection may facilitate treatment as CIN1 may increase the risk of developing cervical cancer. An extensive system level analysis has been carried out to detect crucial network components of CIN1. Differential expression analysis was performed to identify genes that are differentially expressed in CIN1 in comparison to normal cells. Gene Ontology (GO) and pathway enrichment analyses of DEGs were followed by the construction of a protein-protein interaction (PPI) network...
January 19, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28102847/curcumin-represses-mouse-3t3-l1-cell-adipogenic-differentiation-via-inhibiting-mir-17-5p-and-stimulating-the-wnt-signalling-pathway-effector-tcf7l2
#5
Lili Tian, Zhuolun Song, Weijuan Shao, William W Du, Lisa R Zhao, Kejing Zeng, Burton B Yang, Tianru Jin
Understanding mechanisms underlying adipogenic differentiation may lead to the discovery of novel therapeutic targets for obesity. Wnt signalling pathway activation leads to repressed adipogenic differentiation while certain microRNAs may regulate pre-adipocyte proliferation and differentiation. We show here that in mouse white adipose tissue, miR-17-5p level is elevated after high fat diet consumption. miR-17-5p upregulates adipogenic differentiation, as its over-expression increased while its inhibition repressed 3T3-L1 differentiation...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102841/microrna-101-inhibits-invasion-and-angiogenesis-through-targeting-itga3-and-its-systemic-delivery-inhibits-lung-metastasis-in-nasopharyngeal-carcinoma
#6
Xin-Ran Tang, Xin Wen, Qing-Mei He, Ying-Qin Li, Xian-Yue Ren, Xiao-Jing Yang, Jian Zhang, Ya-Qin Wang, Jun Ma, Na Liu
Clinically, distant metastasis after primary treatment remains a key problem in nasopharyngeal carcinoma (NPC), and the treatment outcome of metastatic NPC remains disappointing, so there is a pressing need to identify novel therapeutic strategies. In accordance with our previous microarray data, we found that miR-101 was downregulated in NPC clinical specimens and cell lines. Ectopic expression of miR-101 significantly suppressed NPC cell migration, invasion and angiogenesis in vitro and inhibited angiogenesis and metastasis in vivo using the chicken chorioallantoic membrane model...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102444/patients-with-bicuspid-and-tricuspid-aortic-valve-exhibit-distinct-regional-microrna-signatures-in-mildly-dilated-ascending-aorta
#7
Sebastian Albinsson, Alessandro Della Corte, Azra Alajbegovic, Katarzyna K Krawczyk, Ciro Bancone, Umberto Galderisi, Marilena Cipollaro, Marisa De Feo, Amalia Forte
MicroRNAs are able to modulate gene expression in a range of diseases. We focused on microRNAs as potential contributors to the pathogenesis of ascending aorta (AA) dilatation in patients with stenotic tricuspid (TAV) or bicuspid aortic valve (BAV). Aortic specimens were collected from the 'concavity' and the 'convexity' of mildly dilated AAs and of normal AAs from heart transplant donors. Aortic RNA was analyzed through PCR arrays, profiling the expression of 84 microRNAs involved in cardiovascular disease...
January 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28102325/viral-micrornas-target-a-gene-network-inhibit-stat-activation-and-suppress-interferon-responses
#8
Dhivya Ramalingam, Joseph M Ziegelbauer
Kaposi's sarcoma-associated herpesvirus (KSHV) encodes 12 pre-microRNAs during latency that are processed to yield ~25 mature microRNAs (miRNAs). We were interested in identifying cellular networks that were targeted by KSHV-miRNAs and employed network building strategies using validated KSHV miRNA targets. Here, we report the identification of a gene network centering on the transcription factor- signal transducer and activator of transcription 3 (STAT3) that is targeted by KSHV miRNAs. KSHV miRNAs suppressed STAT3 and STAT5 activation and inhibited STAT3-dependent reporter activation upon IL6-treatment...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102200/erratum-microrna-127-targeting-of-mitoneet-inhibits-neurite-outgrowth-induces-cell-apoptosis-and-contributes-to-physiological-dysfunction-after-spinal-cord-transection
#9
Qin-Qin He, Liu-Lin Xiong, Fei Liu, Xiang He, Guo-Ying Feng, Fei-Fei Shang, Qing-Jie Xia, You-Cui Wang, De-Lu Qiu, Chao-Zhi Luo, Jia Liu, Ting-Hua Wang
No abstract text is available yet for this article.
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102192/the-impact-of-micrornas-on-transcriptional-heterogeneity-and-gene-co-expression-across-single-embryonic-stem-cells
#10
Gennaro Gambardella, Annamaria Carissimo, Amy Chen, Luisa Cutillo, Tomasz J Nowakowski, Diego di Bernardo, Robert Blelloch
MicroRNAs act posttranscriptionally to suppress multiple target genes within a cell population. To what extent this multi-target suppression occurs in individual cells and how it impacts transcriptional heterogeneity and gene co-expression remains unknown. Here we used single-cell sequencing combined with introduction of individual microRNAs. miR-294 and let-7c were introduced into otherwise microRNA-deficient Dgcr8 knockout mouse embryonic stem cells. Both microRNAs induce suppression and correlated expression of their respective gene targets...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28101799/antitumor-efficacy-of-slpi-promoter-controlled-expression-of-artificial-microrna-targeting-egfr-in-a-squamous-cell-carcinoma-cell-line
#11
Jia Chen, Shoude Zhang, Yi Lin, Beibei Yang, Jiang Cao
The purpose of this study was to develop a recombinant adenovirus with secretory leukoprotease inhibitor (SLPI) promoter-controlled expression for gene therapy of squamous cell carcinoma (SCC). An artificial microRNA targeting epidermal growth factor receptor (EGFR) was designed, and used to construct a replication-defective recombinant adenovirus with SLPI promoter-controlled expression. The silencing efficiency of this vector (Ad-SLPI-EGFRamiR) was detected in Hep-2 cells. Western blotting showed that the expression of 170 kD EGFR was significantly reduced in Hep-2 cells 72 h after infection with Ad-SLPI-EGFRamiR...
January 18, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28101798/mir-10b-mir-26a-mir-146a-and-mir-153-expression-in-triple-negative-vs-non-triple-negative-breast-cancer-potential-biomarkers
#12
Insaf Fkih M'hamed, Maud Privat, Mounir Trimeche, Frédérique Penault-Llorca, Yves-Jean Bignon, Abderraouf Kenani
MicroRNAs (miRNAs) are small non-coding RNAs composed of 18-25 nucleotides that can post-transcriptionally regulate gene expression and have key regulatory roles in cancer, acting as both oncogenes and tumor suppressors. About 1000 genes in humans encode miRNAs, which account for approximately 3% of the human genome, and up to 30% of human protein coding genes may be regulated by miRNAs. The objective of this article is to evaluate the expression profile of four miRNAs previously implicated in triple negative breast cancer: miR-10b, miR-26a, miR-146a and miR-153, and to determine their possible interaction in triple negative and non triple negative breast cancer based on clinical outcome and the expression of BRCA1...
January 18, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28101763/mir-126-affects-brain-heart-interaction-after-cerebral-ischemic-stroke
#13
Jieli Chen, Chengcheng Cui, Xiaoping Yang, Jiang Xu, Poornima Venkat, Alex Zacharek, Peng Yu, Michael Chopp
Cardiovascular diseases are approximately three times higher in patients with neurological deficits than in patients without neurological deficits. MicroRNA-126 (MiR-126) facilitates vascular remodeling and decreases fibrosis and is emerging as an important factor in the pathogenesis of cardiovascular diseases and cerebral stroke. In this study, we tested the hypothesis that decreased miR-126 after ischemic stroke may play an important role in regulating cardiac function. Wild-type (WT), specific conditional-knockout endothelial cell miR-126 (miR-126(EC-/-)), and miR-126 knockout control (miR-126(fl/fl)) mice were subjected to distal middle cerebral artery occlusion (dMCAo) (n = 10/group)...
January 19, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28101643/polymorphisms-in-genes-encoding-mir-155-and-mir-146a-are-associated-with-protection-to-type-1-diabetes-mellitus
#14
Taís S Assmann, Guilherme C K Duarte, Letícia A Brondani, Pedro H O de Freitas, Égina M Martins, Luís H Canani, Daisy Crispim
AIMS: Type 1 diabetes mellitus (T1DM) is characterized by severe autoimmune destruction of pancreatic beta-cells. The triggering of autoimmunity against beta-cells is probably caused by a combination of environmental and genetic risk factors. Even though much is known about the genetic of T1DM, more information is needed to completely unravel this tangled disease. MicroRNAs (miRNAs) are a class of small noncoding RNAs molecules that negatively regulate gene expression by inducing target mRNA cleavage or by inhibiting protein translation...
January 19, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28101583/integrated-analysis-of-microrna-and-transcription-factor-reveals-important-regulators-and-regulatory-motifs-in-adult-b-cell-acute-lymphoblastic-leukemia
#15
Xiao-Cong Lin, Xin-Guang Liu, Yu-Ming Zhang, Ning Li, Zhi-Gang Yang, Wei-Yu Fu, Liu-Bo Lan, Hai-Tao Zhang, Yong Dai
B-cell acute lymphoblastic leukemia (B‑ALL) is an aggressive hematological malignancy and a leading cause of cancer-related mortality in children and young adults. The molecular mechanisms involved in the regulation of its gene expression has yet to be fully elucidated. In the present study, we performed large scale expression profiling of microRNA (miRNA) and transcription factor (TF) by Illumina deep‑sequencing and TF array technology, respectively, and identified 291 differentially expressed miRNAs and 201 differentially expressed TFs in adult B‑ALL samples relative to their controls...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28101578/a-22q11-2-amplification-in-the-region-encoding-microrna-650-correlates-with-the-epithelial-to-mesenchymal-transition-in-breast-cancer-primary-cultures-of-mexican-patients
#16
M Lango-Chavarría, G K Chimal-Ramírez, M E Ruiz-Tachiquín, N A Espinoza-Sánchez, M C Suárez-Arriaga, E M Fuentes-Pananá
Breast cancer ranks first in incidence and mortality in working age women. Cancer initiation and progression relies on accumulation of genetic and epigenetic aberrations that alter cellular processes, among them, epithelial to mesenchymal transition (EMT) denotes particularly aggressive neoplasias given its capacity to invade and metastasize. Several microRNAs (miRNA) have been found able to regulate gene expression at the core of EMT. In this study, the Affymetrix CytoScan HD array was used to analyze three different primary tumor cell isolates from Mexican breast cancer patients...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28101327/hsa-let-7c-5p-augments-enterovirus-71-replication-through-viral-subversion-of-cell-signaling-in-rhabdomyosarcoma-cells
#17
Bingfei Zhou, Min Chu, Shanshan Xu, Xiong Chen, Yongjuan Liu, Zhihao Wang, Fengfeng Zhang, Song Han, Jun Yin, Biwen Peng, Xiaohua He, Wanhong Liu
BACKGROUND: Human enterovirus 71 (EV71) causes severe hand, foot and mouse disease, accompanied by neurological complications. During the interaction between EV71 and the host, the virus subverts host cell machinery for its own replication. However, the roles of microRNAs (miRNAs) in this process remain obscure. RESULTS: In this study, we found that the miRNA hsa-let-7c-5p was significantly upregulated in EV71-infected rhabdomyosarcoma cells. The overexpression of hsa-let-7c-5p promoted replication of the virus, and the hsa-let-7c-5p inhibitor suppressed viral replication...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28101246/detection-of-microrna-200b-may-predict-the-inhibitory-effect-of-gefitinib-on-non-small-cell-lung-cancer-and-its-potential-mechanism
#18
Zhiwu Liu, Liqiong Yao, Bangyun Tan, Li Li, Baojin Chen
The present study aimed to investigate the association and underlying mechanisms between microRNA-200b level and the inhibitory effect of gefitinib on non-small cell lung cancer. In total, 100 patients (43 males and 57 females; median age, 63 years) with advanced non-small cell lung cancer (NSCLC) were selected. All patients were administered with gefitinib orally (250 mg/day) and the effect of gefitinib was evaluated according to the Response Evaluation Criteria in Solid Tumors guidelines. Tumor tissue and plasma samples were collected prior to and subsequent to therapy...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101243/mir-199a-5p-regulates-hif-1%C3%AE-and-osgin2-and-its-expression-is-correlated-to-soft-tissue-sarcoma-patients-outcome
#19
Jacqueline Keßler, Swetlana Rot, Matthias Bache, Matthias Kappler, Peter Würl, Dirk Vordermark, Helge Taubert, Thomas Greither
Soft tissue sarcomas are a heterogeneous group of malignant neoplasms of mesenchymal origin. Partly due to hypoxia, an aggressive and radioresistant phenotype frequently develops, resulting in poorer patient outcome. microRNAs (miRNAs) are tiny, non-coding regulators of gene expression and in situations of cellular stress situations may predict clinical progression and patient outcome. In the present study, hypoxia-associated miR-199a-5p expression in 96 soft tissue sarcoma samples was analysed by reverse transcription-quantitative polymerase chain reaction and associations between miR-199a-5p expression and patient clinicopathological characteristics and survival were measured...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101234/dysregulation-of-malat1-and-mir-619-5p-as-a-prognostic-indicator-in-advanced-colorectal-carcinoma
#20
Gu Qiu, Xiu-Bing Zhang, Shu-Qing Zhang, Pei-Long Liu, Wei Wu, Jin-Ye Zhang, Shi-Rong Dai
The present study aimed to detect the expression of metastasis associated lung adenocarcinoma transcript 1 (MALAT1) and microRNA (miR)-619-5p in colorectal carcinoma (CRC), and to evaluate the significance of MALAT1 and miR-619-5p expression in the clinical diagnosis and prognosis of CRC. Quantitative polymerase chain reaction was used to detect MALAT1 and miR-619-5p expression in 120 colorectal carcinoma and 120 adjacent normal tissue samples. The expression levels of MALAT1 and miR-619-5p were significantly different between colorectal carcinoma and adjacent normal tissues (P<0...
December 2016: Oncology Letters
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