Microrna genes

Breast cancer is the most common cancer among women and the molecular pathways that play main roles in breast cancer regulation are still not completely understood. MicroRNAs (miRNAs) and transcription factors (TFs) are important regulators of gene expression.

17p nutifooddau 27-01-2019 15 2   Download

MicroRNAs (miRNAs) are small noncoding RNAs of about 19–25 nt that regulate gene expression posttranscriptionally under various cellular conditions, including apoptosis. The miRNAs involved in modulation of apoptotic events in T cells are partially known.

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important regulators of biological processes in animals and plants. MiRNAs regulate gene expression at the posttranscriptional level by binding to mRNAs and either inhibit translation or modify the stability of the mRNA. Due to the important biological role of miRNAs it is of great interest to study their expression level in the cells. Furthermore, miRNAs have been associated with cancer and other diseases [1] and miRNA expression can help in the diagnosis and prognostic of human disease [2,3].

11p zingzing09 24-04-2013 52 3   Download

Conservation of microRNAs (miRNAs) among species suggests that they bear conserved biological functions. However, sequencing of new miRNAs has not always been accompanied by a search for orthologues in other spe-cies. I report herein the results of a systematic search for interspecies ortho-logues of miRNA precursors, leading to the identification of 35 human and 45 mouse new putative miRNA genes. MicroRNA tracks were written to visualize miRNAs in human and mouse genomes on the UCSC Genome Browser....

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The function of microRNAs (miRNAs) is translational repression or mRNA cleavage of target genes by binding to 3¢-UTRs of target mRNA. In this study, we investigated the functions and the target genes of micro-RNA124a (miR124a), and imaged the miR124a-mediated repression of chromosome 14 open reading frame24(c14orf24, unknown function) during neurogenesis, using noninvasive luciferase systems.

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MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression by inhibiting translation and⁄or inducing degradation of target mRNAs, and they play important roles in a wide variety of biological func-tions including cell differentiation, tumorigenesis, apoptosis and metabo-lism.

8p viettel02 22-02-2013 28 3   Download

Urokinase-type plasminogen activator (uPA) and c-met play a major role in cancer invasion and metastasis. Evidence has suggested that uPA and c-met overexpression may be coordinated in human hepatocellular carci-noma (HCC). In the present study, to understand whether the expression of these genes might be coregulated by specific microRNAs (miRs) in human cells, we predicted thatHomo sapiensmicroRNA-23b could recog-nize two sites in the 3¢-UTR of uPA and four sites in the c-met 3¢-UTR by the algorithm pictar. ...

17p viettel02 22-02-2013 44 3   Download

The discovery that microRNAs (miRNAs) are synthesized as hairpin-con-taining precursors and share many features has stimulated the development of several computational approaches for identifying new miRNA genes in various animal species.

7p viettel02 22-02-2013 41 3   Download

In recent years, our understanding of how gene regulatory networks con-trol cell physiology has improved dramatically. Studies have demonstrated that transcription is regulated not only by protein factors, but also by small RNA molecules, microRNAs (miRNAs). The first miRNA was discovered in 1993 as a result of a genetic screen for mutations in Caenorhabditis elegans.

13p viettel02 20-02-2013 36 2   Download

MicroRNAs are an evolutionarily conserved class of endogenous noncod-ing RNAs that modulate gene expression at the post-transcriptional level. Recently, microRNA-23a (miR-23a) has been found to function as a growth-promoting and antiapoptotic factor in hepatocellular carcinoma cells.

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MicroRNAs (miRNAs) have been proven to play important roles at the post-transcriptional level in animals and plants. To investigate clustering patterns and specific sequence characteristics in the flanking regions of plant miRNA genes, we performed genome-wide analyses ofArabidopsis thaliana, Populus trichocarpa, Oryza sativaand Sorghum bicolor.

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MicroRNAs are a class of small noncoding RNAs that function as key reg-ulators of gene expression at the post-transcriptional level. Recently, micr-oRNA-373 (miR-373) has been found to function as an oncogene in testicular germ cell tumors.

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MicroRNAs (miRNAs) are a class of small noncoding RNAs that have gained status as important regulators of gene expression. Recent studies have demonstrated that miRNAs are aberrantly expressed in the cardiovas-cular system under some pathological conditions.

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MicroRNAs (miRNAs) comprise species of short noncoding RNA that regulate gene expression post-transcriptionally. Recent studies have demon-strated that epigenetic mechanisms, including DNA methylation and his-tone modification, not only regulate the expression of protein-encoding genes, but also miRNAs, such as let-7a, miR-9, miR-34a, miR-124, miR-137, miR-148 and miR-203.

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MicroRNAs (miRNAs) regulate gene expression post-transcriptionally by binding to target mRNAs in a sequence-specific manner. A large number of genes appear to be the target of miRNAs, and an essential role for miRNAs in the regulation of various conserved cell signaling cascades, such as mitogen-activated protein kinase, Notch and Hedgehog

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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article MicroRNA Target Detection and Analysis for Genes Related to Breast Cancer Using MDLcompress

16p dauphong19 07-03-2012 42 4   Download

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Gene and microRNA analysis of neutrophils from patients with polycythemia vera and essential thrombocytosis: down-regulation of micro RNA-1 and -133a

17p dauphong3 03-01-2012 67 4   Download

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : MicroRNA and gene expression patterns in the differentiation of human embryonic stem cells

17p dauphong3 03-01-2012 58 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Investigation of post-transcriptional gene regulatory networks associated with autism spectrum disorders by microRNA expression profiling of lymphoblastoid cell lines

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MicroRNAs (miRNAs) are small noncoding RNAs (~22 nucleotides) that regulate gene expression by cleaving mRNAs or inhibiting translation. The baboon is a well-characterized cardiovascular disease model; however, no baboon miRNAs have been identified. Evidence indicates that the baboon and human genomes are highly conserved; based on this conservation, we hypothesized that comparative genomic methods could be used to identify baboon miRNAs.

8p toshiba23 18-11-2011 58 3   Download