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@article{1707497,
author = {Feretzaki, Marianna and Pospíšilová, Michaela and Valador Fernandes, Rita and Lunardi, Thomas and Krejčí, Lumír and Lingner, Joachim},
article_location = {Berlin},
article_number = {7833},
doi = {http://dx.doi.org/10.1038/s41586-020-2815-6},
keywords = {RAD51; TERRA lncRNA; R-loops},
language = {eng},
issn = {0028-0836},
journal = {Nature},
title = {RAD51-dependent recruitment of TERRA lncRNA to telomeres through R-loops},
url = {https://www.nature.com/articles/s41586-020-2815-6},
volume = {587},
year = {2020}
}
TY - JOUR
ID - 1707497
AU - Feretzaki, Marianna - Pospíšilová, Michaela - Valador Fernandes, Rita - Lunardi, Thomas - Krejčí, Lumír - Lingner, Joachim
PY - 2020
TI - RAD51-dependent recruitment of TERRA lncRNA to telomeres through R-loops
JF - Nature
VL - 587
IS - 7833
SP - 303-308
EP - 303-308
PB - Nature Research
SN - 00280836
KW - RAD51
KW - TERRA lncRNA
KW - R-loops
UR - https://www.nature.com/articles/s41586-020-2815-6
L2 - https://www.nature.com/articles/s41586-020-2815-6
N2 - Telomeres- repeated, noncoding nucleotide motifs and associated proteins that are found at the ends of eukaryotic chromosomes—mediate genome stability and determine cellular lifespan. Telomeric-repeat-containing RNA (TERRA) is a class of long noncoding RNAs (lncRNAs) that are transcribed from chromosome ends; these RNAs in turn regulate telomeric chromatin structure and telomere maintenance through the telomere-extending enzyme telomerase and homology-directed DNA repair. The mechanisms by which TERRA is recruited to chromosome ends remain poorly defined. Here we develop a reporter system with which to dissect the underlying mechanisms, and show that the UUAGGG repeats of TERRA are both necessary and sufficient to target TERRA to chromosome ends. TERRA preferentially associates with short telomeres through the formation of telomeric DNA–RNA hybrid (R-loop) structures that can form in trans. Telomere association and R-loop formation trigger telomere fragility and are promoted by the recombinase RAD51 and its interacting partner BRCA2, but counteracted by the RNA-surveillance factors RNaseH1 and TRF1. RAD51 physically interacts with TERRA and catalyses R-loop formation with TERRA in vitro, suggesting a direct involvement of this DNA recombinase in the recruitment of TERRA by strand invasion. Together, our findings reveal a RAD51-dependent pathway that governs TERRA-mediated R-loop formation after transcription, providing a mechanism for the recruitment of lncRNAs to new loci in trans.
ER -
FERETZAKI, Marianna, Michaela POSPÍŠILOVÁ, Rita VALADOR FERNANDES, Thomas LUNARDI, Lumír KREJČÍ a Joachim LINGNER. RAD51-dependent recruitment of TERRA lncRNA to telomeres through R-loops. \textit{Nature}. Berlin: Nature Research, 2020, roč.~587, č.~7833, s.~303-308. ISSN~0028-0836. Dostupné z: https://dx.doi.org/10.1038/s41586-020-2815-6.
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