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© Adeline Mallet
Nématodes Caenorhabditis elegans en microscopie électronique à balayage.
Publication : Biochimica et biophysica acta

A nuclear perspective on RNAi pathways in metazoans

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Biochimica et biophysica acta - 17 Dec 2013

Cecere G, Grishok A

Link to Pubmed [PMID] – 24361586

Biochim. Biophys. Acta 2014 Mar;1839(3):223-33

The role of RNA interference (RNAi) in post-transcriptional regulation of complementary targets is well known. However, less is known about transcriptional silencing mechanisms mediated by RNAi. Such mechanisms have been characterized in yeast and plants, which suggests that similar RNA silencing mechanisms might operate in animals. A growing amount of experimental evidence indicates that short RNAs and their co-factor Argonaute proteins can regulate many nuclear processes in metazoans. PIWI-interacting RNAs (piRNAs) initiate transcriptional silencing of transposable elements, which leads to heterochromatin formation and/or DNA methylation. In addition, Argonaute proteins and short RNAs directly regulate Pol II transcription and splicing of euchromatic protein-coding genes and also affect genome architecture. Therefore, RNAi pathways can have a profound global impact on the transcriptional programs in cells during animal development. This article is part of a Special Issue entitled: Chromatin and epigenetic regulation of animal development.

http://www.ncbi.nlm.nih.gov/pubmed/24361586