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Oncomirs : microRNAs with a role in cancer

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TLDR
I MicroRNAs (miRNAs) are an abundant class of small non-protein-coding RNAs that function as negative gene regulators as discussed by the authors, and have been shown to repress the expression of important cancer-related genes and might prove useful in the diagnosis and treatment of cancer.
Abstract
I MicroRNAs (miRNAs) are an abundant class of small non-protein-coding RNAs that function as negative gene regulators. They regulate diverse biological processes, and bioinformatic data indicates that each miRNA can control hundreds of gene targets, underscoring the potential influence of miRNAs on almost every genetic pathway. Recent evidence has shown that miRNA mutations or mis-expression correlate with various human cancers and indicates that miRNAs can function as tumour suppressors and oncogenes. miRNAs have been shown to repress the expression of important cancer-related genes and might prove useful in the diagnosis and treatment of cancer.

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The proto-oncogene Pim-1 is a target of miR-33a

TL;DR: The potential of miR-33a to act as a tumor suppressor miRNA is demonstrated, which suggests miR -33a replacement therapy through delivery ofmiR mimics as a novel therapeutic strategy.
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Evolutionary Conservation and Expression of Human RNA-Binding Proteins and Their Role in Human Genetic Disease

TL;DR: This chapter globally discusses human RBPs, review RBPs based on common structural RNA-binding domains, study their evolutionary conservation and expression, and summarize disease associations of different RBP classes.
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Small but influential: the role of microRNAs on gene regulatory network and 3′UTR evolution

TL;DR: This work focuses on the post-transcriptional level gene regulation of miRNAs in animals and reviews how the mi RNAs act to sustain and shape up the expression profiles of specific cell types; how theMiRNAs integrate into the existing gene regulatory networks; and how themiRNAs influence the evolution of 3'UTR of mammalian mRNAs.
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MicroRNA-185 and 342 Inhibit Tumorigenicity and Induce Apoptosis through Blockade of the SREBP Metabolic Pathway in Prostate Cancer Cells

TL;DR: Experimental and clinical results indicate that SREBP-1 is a potential oncogenic transcription factor in prostate cancer, and two newly identified miRNAs, miR-185 and 342, represent a novel targeting mechanism for prostate cancer therapy.
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Argonaute proteins: potential biomarkers for human colon cancer

TL;DR: Argonaute proteins are overexpressed in colon cancer relative to adjacent non-cancer tissue and appear increased in advanced tumors with distant metastasis, suggesting it may promote tumor invasion.
References
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Journal ArticleDOI

MicroRNAs: Genomics, Biogenesis, Mechanism, and Function

TL;DR: Although they escaped notice until relatively recently, miRNAs comprise one of the more abundant classes of gene regulatory molecules in multicellular organisms and likely influence the output of many protein-coding genes.
Journal ArticleDOI

The C. elegans heterochronic gene lin-4 encodes small RNAs with antisense complementarity to lin-14

TL;DR: Two small lin-4 transcripts of approximately 22 and 61 nt were identified in C. elegans and found to contain sequences complementary to a repeated sequence element in the 3' untranslated region (UTR) of lin-14 mRNA, suggesting that lin- 4 regulates lin- 14 translation via an antisense RNA-RNA interaction.
Journal ArticleDOI

MicroRNA expression profiles classify human cancers

TL;DR: A new, bead-based flow cytometric miRNA expression profiling method is used to present a systematic expression analysis of 217 mammalian miRNAs from 334 samples, including multiple human cancers, and finds the miRNA profiles are surprisingly informative, reflecting the developmental lineage and differentiation state of the tumours.
Journal ArticleDOI

Prediction of Mammalian MicroRNA Targets

TL;DR: The predicted regulatory targets of mammalian miRNAs were enriched for genes involved in transcriptional regulation but also encompassed an unexpectedly broad range of other functions.
Journal ArticleDOI

The nuclear RNase III Drosha initiates microRNA processing

TL;DR: The two RNase III proteins, Drosha and Dicer, may collaborate in the stepwise processing of miRNAs, and have key roles in miRNA-mediated gene regulation in processes such as development and differentiation.
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