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Long non-coding RNA-polycomb intimate rendezvous.

Authors
  • Cerase, Andrea1
  • Tartaglia, Gian Gaetano2, 3, 4, 5, 6
  • 1 Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AT, UK.
  • 2 Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain. , (Spain)
  • 3 Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain. , (Spain)
  • 4 Institucio Catalana de Recerca i Estudis Avançats (ICREA), 23 Passeig Lluis Companys, 08010 Barcelona, Spain. , (Spain)
  • 5 Department of Biology 'Charles Darwin', Sapienza University of Rome, P.le A. Moro 5, Rome 00185, Italy. , (Italy)
  • 6 Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163, Genoa, Italy. , (Italy)
Type
Published Article
Journal
Open biology
Publication Date
Sep 01, 2020
Volume
10
Issue
9
Pages
200126–200126
Identifiers
DOI: 10.1098/rsob.200126
PMID: 32898472
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The interaction between polycomb-repressive complexes 1/2 (PRC1/2) and long non-coding RNA (lncRNA), such as the X inactive specific transcript Xist and the HOX transcript antisense RNA (HOTAIR), has been the subject of intense debate. While cross-linking, immuno-precipitation and super-resolution microscopy argue against direct interaction of Polycomb with some lncRNAs, there is increasing evidence supporting the ability of both PRC1 and PRC2 to functionally associate with RNA. Recent data indicate that these interactions are in most cases spurious, but nonetheless crucial for a number of cellular activities. In this review, we suggest that while PRC1/2 recruitment by HOTAIR might be direct, in the case of Xist, it might occur indirectly and, at least in part, through the process of liquid-liquid phase separation. We present recent models of lncRNA-mediated PRC1/2 recruitment to their targets and describe potential RNA-mediated roles in the three-dimensional organization of the nucleus.

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