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Long non-coding RNAs: new players in cell differentiation and development

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TLDR
The function of lncRNAs in developmental processes, such as in dosage compensation, genomic imprinting, cell differentiation and organogenesis, with a particular emphasis on mammalian development are described.
Abstract
Genomes of multicellular organisms are characterized by the pervasive expression of different types of non-coding RNAs (ncRNAs). Long ncRNAs (lncRNAs) belong to a novel heterogeneous class of ncRNAs that includes thousands of different species. lncRNAs have crucial roles in gene expression control during both developmental and differentiation processes, and the number of lncRNA species increases in genomes of developmentally complex organisms, which highlights the importance of RNA-based levels of control in the evolution of multicellular organisms. In this Review, we describe the function of lncRNAs in developmental processes, such as in dosage compensation, genomic imprinting, cell differentiation and organogenesis, with a particular emphasis on mammalian development.

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Overexpression of lncRNA AFAP1-AS1 correlates with poor prognosis and promotes tumorigenesis in colorectal cancer.

TL;DR: It is found that AFAP1-AS1 was aberrantly over-expressed in CRC tissues and closely correlated with tumor size, TNM stage and distant metastasis and significantly up-regulated in CRC, which may act as an oncogene and correlate with tumor malignant progression and poor prognosis of CRC.
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Super-Enhancer-Associated Long Noncoding RNA HCCL5 Is Activated by ZEB1 and Promotes the Malignancy of Hepatocellular Carcinoma.

TL;DR: HCCL5 was transcriptionally driven by ZEB1 via a super-enhancer and was significantly and frequently overexpressed in human HCC tissues, correlating with worse overall survival of patients with HCC, and the data suggest that HCCL 5 may serve as a novel prognostic biomarker and therapeutic target in HCC.
Journal ArticleDOI

P53: Emerging roles in stem cells, development and beyond

TL;DR: This Primer provides an overview of the roles of p53 in development and stem cells, and highlights how these relate to its well-known functions in tumor suppression.
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Non-coding RNAs: the riddle of the transcriptome and their perspectives in cancer.

TL;DR: Results reinforce the hypothesis, that ncRNAs constitute therapeutic targets, and point out their clinical potential as stratification markers, to discuss their clinical implicit as prognostic diagnostic indicators, biomarkers, and therapeutic targets.
Journal ArticleDOI

Methods for distinguishing between protein-coding and long noncoding RNAs and the elusive biological purpose of translation of long noncoding RNAs

TL;DR: It is concluded that the model most consistent with the available data is that a large number of mammalian lncRNAs undergo translation, but only a very small minority of such translation events results in stable and functional peptides.
References
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Journal ArticleDOI

Mapping and quantifying mammalian transcriptomes by RNA-Seq.

TL;DR: Although >90% of uniquely mapped reads fell within known exons, the remaining data suggest new and revised gene models, including changed or additional promoters, exons and 3′ untranscribed regions, as well as new candidate microRNA precursors.
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Circular RNAs are a large class of animal RNAs with regulatory potency

TL;DR: It is found that a human circRNA, antisense to the cerebellar degeneration-related protein 1 transcript (CDR1as), is densely bound by microRNA (miRNA) effector complexes and harbours 63 conserved binding sites for the ancient miRNA miR-7.
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Natural RNA circles function as efficient microRNA sponges

TL;DR: This study serves as the first functional analysis of a naturally expressed circular RNA, ciRS-7, which contains more than 70 selectively conserved miRNA target sites, and is highly and widely associated with Argonaute proteins in a miR-7-dependent manner.
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A ceRNA Hypothesis: The Rosetta Stone of a Hidden RNA Language?

TL;DR: It is proposed that this "competing endogenous RNA" (ceRNA) activity forms a large-scale regulatory network across the transcriptome, greatly expanding the functional genetic information in the human genome and playing important roles in pathological conditions, such as cancer.
Journal ArticleDOI

Long non-coding RNA HOTAIR reprograms chromatin state to promote cancer metastasis

TL;DR: It is shown that lincRNAs in the HOX loci become systematically dysregulated during breast cancer progression, indicating that l incRNAs have active roles in modulating the cancer epigenome and may be important targets for cancer diagnosis and therapy.
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