The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks

The eukaryotic nucleus is continuously being exposed to endogenous and exogenous sources that cause DNA breaks, whose faithful repair requires the activity of dedicated nuclear machineries. DNA is packaged into a variety of chromatin domains, each characterized by specific molecular properties that...

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Main Authors: Apfrida Kendek, Marieke R. Wensveen, Aniek Janssen
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Genes
Subjects:
Online Access:https://www.mdpi.com/2073-4425/12/9/1415
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author Apfrida Kendek
Marieke R. Wensveen
Aniek Janssen
author_facet Apfrida Kendek
Marieke R. Wensveen
Aniek Janssen
author_sort Apfrida Kendek
collection DOAJ
description The eukaryotic nucleus is continuously being exposed to endogenous and exogenous sources that cause DNA breaks, whose faithful repair requires the activity of dedicated nuclear machineries. DNA is packaged into a variety of chromatin domains, each characterized by specific molecular properties that regulate gene expression and help maintain nuclear structure. These different chromatin environments each demand a tailored response to DNA damage. Silenced chromatin domains in particular present a major challenge to the cell’s DNA repair machinery due to their specific biophysical properties and distinct, often repetitive, DNA content. To this end, we here discuss the interplay between silenced chromatin domains and DNA damage repair, specifically double-strand breaks, and how these processes help maintain genome stability.
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spelling doaj.art-ef0b9c3ec98b4f7c95e0ff79ccc4b19e2023-11-22T13:14:45ZengMDPI AGGenes2073-44252021-09-01129141510.3390/genes12091415The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand BreaksApfrida Kendek0Marieke R. Wensveen1Aniek Janssen2Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG Utrecht, The NetherlandsCenter for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG Utrecht, The NetherlandsCenter for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG Utrecht, The NetherlandsThe eukaryotic nucleus is continuously being exposed to endogenous and exogenous sources that cause DNA breaks, whose faithful repair requires the activity of dedicated nuclear machineries. DNA is packaged into a variety of chromatin domains, each characterized by specific molecular properties that regulate gene expression and help maintain nuclear structure. These different chromatin environments each demand a tailored response to DNA damage. Silenced chromatin domains in particular present a major challenge to the cell’s DNA repair machinery due to their specific biophysical properties and distinct, often repetitive, DNA content. To this end, we here discuss the interplay between silenced chromatin domains and DNA damage repair, specifically double-strand breaks, and how these processes help maintain genome stability.https://www.mdpi.com/2073-4425/12/9/1415constitutive heterochromatinfacultative heterochromatinDNA-damage repairdouble-strand breaks
spellingShingle Apfrida Kendek
Marieke R. Wensveen
Aniek Janssen
The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
Genes
constitutive heterochromatin
facultative heterochromatin
DNA-damage repair
double-strand breaks
title The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
title_full The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
title_fullStr The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
title_full_unstemmed The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
title_short The Sound of Silence: How Silenced Chromatin Orchestrates the Repair of Double-Strand Breaks
title_sort sound of silence how silenced chromatin orchestrates the repair of double strand breaks
topic constitutive heterochromatin
facultative heterochromatin
DNA-damage repair
double-strand breaks
url https://www.mdpi.com/2073-4425/12/9/1415
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