Cargando…

NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487

DNA damage caused by reactive oxygen species may result in genetic mutations or cell death. Base excision repair (BER) is the major pathway that repairs DNA oxidative damage in order to maintain genomic integrity. In mammals, eleven DNA glycosylases have been reported to initiate BER, where each rec...

Descripción completa

Detalles Bibliográficos
Autores principales: Hanna, Bishoy M. F., Michel, Maurice, Helleday, Thomas, Mortusewicz, Oliver
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8123590/
https://www.ncbi.nlm.nih.gov/pubmed/33925271
http://dx.doi.org/10.3390/ijms22094542
_version_ 1783692952139202560
author Hanna, Bishoy M. F.
Michel, Maurice
Helleday, Thomas
Mortusewicz, Oliver
author_facet Hanna, Bishoy M. F.
Michel, Maurice
Helleday, Thomas
Mortusewicz, Oliver
author_sort Hanna, Bishoy M. F.
collection PubMed
description DNA damage caused by reactive oxygen species may result in genetic mutations or cell death. Base excision repair (BER) is the major pathway that repairs DNA oxidative damage in order to maintain genomic integrity. In mammals, eleven DNA glycosylases have been reported to initiate BER, where each recognizes a few related DNA substrate lesions with some degree of overlapping specificity. 7,8-dihydro-8-oxoguanine (8-oxoG), one of the most abundant DNA oxidative lesions, is recognized and excised mainly by 8-oxoguanine DNA glycosylase 1 (OGG1). Further oxidation of 8-oxoG generates hydantoin lesions, which are recognized by NEIL glycosylases. Here, we demonstrate that NEIL1, and to a lesser extent NEIL2, can potentially function as backup BER enzymes for OGG1 upon pharmacological inhibition or depletion of OGG1. NEIL1 recruitment kinetics and chromatin binding after DNA damage induction increase in cells treated with OGG1 inhibitor TH5487 in a dose-dependent manner, whereas NEIL2 accumulation at DNA damage sites is prolonged following OGG1 inhibition. Furthermore, depletion of OGG1 results in increased retention of NEIL1 and NEIL2 at damaged chromatin. Importantly, oxidatively stressed NEIL1- or NEIL2-depleted cells show excessive genomic 8-oxoG lesions accumulation upon OGG1 inhibition, suggesting a prospective compensatory role for NEIL1 and NEIL2. Our study thus exemplifies possible backup mechanisms within the base excision repair pathway.
format Online
Article
Text
id pubmed-8123590
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-81235902021-05-16 NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487 Hanna, Bishoy M. F. Michel, Maurice Helleday, Thomas Mortusewicz, Oliver Int J Mol Sci Article DNA damage caused by reactive oxygen species may result in genetic mutations or cell death. Base excision repair (BER) is the major pathway that repairs DNA oxidative damage in order to maintain genomic integrity. In mammals, eleven DNA glycosylases have been reported to initiate BER, where each recognizes a few related DNA substrate lesions with some degree of overlapping specificity. 7,8-dihydro-8-oxoguanine (8-oxoG), one of the most abundant DNA oxidative lesions, is recognized and excised mainly by 8-oxoguanine DNA glycosylase 1 (OGG1). Further oxidation of 8-oxoG generates hydantoin lesions, which are recognized by NEIL glycosylases. Here, we demonstrate that NEIL1, and to a lesser extent NEIL2, can potentially function as backup BER enzymes for OGG1 upon pharmacological inhibition or depletion of OGG1. NEIL1 recruitment kinetics and chromatin binding after DNA damage induction increase in cells treated with OGG1 inhibitor TH5487 in a dose-dependent manner, whereas NEIL2 accumulation at DNA damage sites is prolonged following OGG1 inhibition. Furthermore, depletion of OGG1 results in increased retention of NEIL1 and NEIL2 at damaged chromatin. Importantly, oxidatively stressed NEIL1- or NEIL2-depleted cells show excessive genomic 8-oxoG lesions accumulation upon OGG1 inhibition, suggesting a prospective compensatory role for NEIL1 and NEIL2. Our study thus exemplifies possible backup mechanisms within the base excision repair pathway. MDPI 2021-04-27 /pmc/articles/PMC8123590/ /pubmed/33925271 http://dx.doi.org/10.3390/ijms22094542 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hanna, Bishoy M. F.
Michel, Maurice
Helleday, Thomas
Mortusewicz, Oliver
NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title_full NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title_fullStr NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title_full_unstemmed NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title_short NEIL1 and NEIL2 Are Recruited as Potential Backup for OGG1 upon OGG1 Depletion or Inhibition by TH5487
title_sort neil1 and neil2 are recruited as potential backup for ogg1 upon ogg1 depletion or inhibition by th5487
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8123590/
https://www.ncbi.nlm.nih.gov/pubmed/33925271
http://dx.doi.org/10.3390/ijms22094542
work_keys_str_mv AT hannabishoymf neil1andneil2arerecruitedaspotentialbackupforogg1uponogg1depletionorinhibitionbyth5487
AT michelmaurice neil1andneil2arerecruitedaspotentialbackupforogg1uponogg1depletionorinhibitionbyth5487
AT helledaythomas neil1andneil2arerecruitedaspotentialbackupforogg1uponogg1depletionorinhibitionbyth5487
AT mortusewiczoliver neil1andneil2arerecruitedaspotentialbackupforogg1uponogg1depletionorinhibitionbyth5487