Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells
- Autores
- Borda, Miguel Angel; Palmitelli, Micaela; Verón, Gustavo Luis; Gonzalez Cid, Marcela Beatriz; de Campos Nebel, Ildefonso Marcelo
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a DNA repair enzyme that removes irreversible protein-linked 3′ DNA complexes, 3′ phosphoglycolates, alkylation damage-induced DNA breaks, and 3′ deoxyribose nucleosides. In addition to its extended spectrum of substrates, TDP1 interacts with several DNA damage response factors. To determine whether TDP1 participates in the repair of topoisomerase II (Top2) induced DNA lesions, we generated TDP1 depleted (TDP1kd) human tumoral cells. We found that TDP1kd cells are hypersensitive to etoposide (ETO). Moreover, we established in a chromatin context that following treatment with ETO, TDP1kd cells accumulate increased amounts of Top2α cleavage complexes, removing them with an altered kinetics. We also showed that TDP1 depleted cells accumulate increased γH2AX and pS296Chk1 signals following treatment with ETO. Similarly, cytogenetics analyses following Top2 poisoning revealed increased amounts of chromatid and chromosome breaks and exchanges on TDP1kd cells in the presence or not of the DNA-PKcs inhibitor NU7026. However, the levels of sister chromatid exchanges were similar in both TDP1kd and control non-silenced cell lines. This suggests a role of TDP1 in both canonical non-homologous end joining and alternative end joining, but not in the homologous recombination repair pathway. Finally, micronucleus analyses following ETO treatment revealed a higher frequency of micronucleus containing γH2AX signals on TDP1kd cells. Together, our results highlight an active role of TDP1 in the repair of Top2-induced DNA damage and its relevance on the genome stability maintenance in human cells.
Fil: Borda, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina
Fil: Palmitelli, Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina
Fil: Verón, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina
Fil: Gonzalez Cid, Marcela Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina
Fil: de Campos Nebel, Ildefonso Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina - Materia
-
Topoisomerase Ii-Mediated Dna Damage
Dna Double Strand Break Repair
Tyrosyl-Dna-Phosphodiesterase 1
Genome Instability - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/41467
Ver los metadatos del registro completo
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Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cellsBorda, Miguel AngelPalmitelli, MicaelaVerón, Gustavo LuisGonzalez Cid, Marcela Beatrizde Campos Nebel, Ildefonso MarceloTopoisomerase Ii-Mediated Dna DamageDna Double Strand Break RepairTyrosyl-Dna-Phosphodiesterase 1Genome Instabilityhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a DNA repair enzyme that removes irreversible protein-linked 3′ DNA complexes, 3′ phosphoglycolates, alkylation damage-induced DNA breaks, and 3′ deoxyribose nucleosides. In addition to its extended spectrum of substrates, TDP1 interacts with several DNA damage response factors. To determine whether TDP1 participates in the repair of topoisomerase II (Top2) induced DNA lesions, we generated TDP1 depleted (TDP1kd) human tumoral cells. We found that TDP1kd cells are hypersensitive to etoposide (ETO). Moreover, we established in a chromatin context that following treatment with ETO, TDP1kd cells accumulate increased amounts of Top2α cleavage complexes, removing them with an altered kinetics. We also showed that TDP1 depleted cells accumulate increased γH2AX and pS296Chk1 signals following treatment with ETO. Similarly, cytogenetics analyses following Top2 poisoning revealed increased amounts of chromatid and chromosome breaks and exchanges on TDP1kd cells in the presence or not of the DNA-PKcs inhibitor NU7026. However, the levels of sister chromatid exchanges were similar in both TDP1kd and control non-silenced cell lines. This suggests a role of TDP1 in both canonical non-homologous end joining and alternative end joining, but not in the homologous recombination repair pathway. Finally, micronucleus analyses following ETO treatment revealed a higher frequency of micronucleus containing γH2AX signals on TDP1kd cells. Together, our results highlight an active role of TDP1 in the repair of Top2-induced DNA damage and its relevance on the genome stability maintenance in human cells.Fil: Borda, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaFil: Palmitelli, Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaFil: Verón, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaFil: Gonzalez Cid, Marcela Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaFil: de Campos Nebel, Ildefonso Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaElsevier Science2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/41467Borda, Miguel Angel; Palmitelli, Micaela; Verón, Gustavo Luis; Gonzalez Cid, Marcela Beatriz; de Campos Nebel, Ildefonso Marcelo; Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells; Elsevier Science; Mutation Research-fundamental And Molecular Mechanisms Of Mutagenesis; 781; 11-2015; 37-480027-5107CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0027510715300427info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mrfmmm.2015.09.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:54Zoai:ri.conicet.gov.ar:11336/41467instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:29:54.538CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
title |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
spellingShingle |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells Borda, Miguel Angel Topoisomerase Ii-Mediated Dna Damage Dna Double Strand Break Repair Tyrosyl-Dna-Phosphodiesterase 1 Genome Instability |
title_short |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
title_full |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
title_fullStr |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
title_full_unstemmed |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
title_sort |
Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells |
dc.creator.none.fl_str_mv |
Borda, Miguel Angel Palmitelli, Micaela Verón, Gustavo Luis Gonzalez Cid, Marcela Beatriz de Campos Nebel, Ildefonso Marcelo |
author |
Borda, Miguel Angel |
author_facet |
Borda, Miguel Angel Palmitelli, Micaela Verón, Gustavo Luis Gonzalez Cid, Marcela Beatriz de Campos Nebel, Ildefonso Marcelo |
author_role |
author |
author2 |
Palmitelli, Micaela Verón, Gustavo Luis Gonzalez Cid, Marcela Beatriz de Campos Nebel, Ildefonso Marcelo |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Topoisomerase Ii-Mediated Dna Damage Dna Double Strand Break Repair Tyrosyl-Dna-Phosphodiesterase 1 Genome Instability |
topic |
Topoisomerase Ii-Mediated Dna Damage Dna Double Strand Break Repair Tyrosyl-Dna-Phosphodiesterase 1 Genome Instability |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a DNA repair enzyme that removes irreversible protein-linked 3′ DNA complexes, 3′ phosphoglycolates, alkylation damage-induced DNA breaks, and 3′ deoxyribose nucleosides. In addition to its extended spectrum of substrates, TDP1 interacts with several DNA damage response factors. To determine whether TDP1 participates in the repair of topoisomerase II (Top2) induced DNA lesions, we generated TDP1 depleted (TDP1kd) human tumoral cells. We found that TDP1kd cells are hypersensitive to etoposide (ETO). Moreover, we established in a chromatin context that following treatment with ETO, TDP1kd cells accumulate increased amounts of Top2α cleavage complexes, removing them with an altered kinetics. We also showed that TDP1 depleted cells accumulate increased γH2AX and pS296Chk1 signals following treatment with ETO. Similarly, cytogenetics analyses following Top2 poisoning revealed increased amounts of chromatid and chromosome breaks and exchanges on TDP1kd cells in the presence or not of the DNA-PKcs inhibitor NU7026. However, the levels of sister chromatid exchanges were similar in both TDP1kd and control non-silenced cell lines. This suggests a role of TDP1 in both canonical non-homologous end joining and alternative end joining, but not in the homologous recombination repair pathway. Finally, micronucleus analyses following ETO treatment revealed a higher frequency of micronucleus containing γH2AX signals on TDP1kd cells. Together, our results highlight an active role of TDP1 in the repair of Top2-induced DNA damage and its relevance on the genome stability maintenance in human cells. Fil: Borda, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina Fil: Palmitelli, Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina Fil: Verón, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina Fil: Gonzalez Cid, Marcela Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina Fil: de Campos Nebel, Ildefonso Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina |
description |
Tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a DNA repair enzyme that removes irreversible protein-linked 3′ DNA complexes, 3′ phosphoglycolates, alkylation damage-induced DNA breaks, and 3′ deoxyribose nucleosides. In addition to its extended spectrum of substrates, TDP1 interacts with several DNA damage response factors. To determine whether TDP1 participates in the repair of topoisomerase II (Top2) induced DNA lesions, we generated TDP1 depleted (TDP1kd) human tumoral cells. We found that TDP1kd cells are hypersensitive to etoposide (ETO). Moreover, we established in a chromatin context that following treatment with ETO, TDP1kd cells accumulate increased amounts of Top2α cleavage complexes, removing them with an altered kinetics. We also showed that TDP1 depleted cells accumulate increased γH2AX and pS296Chk1 signals following treatment with ETO. Similarly, cytogenetics analyses following Top2 poisoning revealed increased amounts of chromatid and chromosome breaks and exchanges on TDP1kd cells in the presence or not of the DNA-PKcs inhibitor NU7026. However, the levels of sister chromatid exchanges were similar in both TDP1kd and control non-silenced cell lines. This suggests a role of TDP1 in both canonical non-homologous end joining and alternative end joining, but not in the homologous recombination repair pathway. Finally, micronucleus analyses following ETO treatment revealed a higher frequency of micronucleus containing γH2AX signals on TDP1kd cells. Together, our results highlight an active role of TDP1 in the repair of Top2-induced DNA damage and its relevance on the genome stability maintenance in human cells. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-11 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/41467 Borda, Miguel Angel; Palmitelli, Micaela; Verón, Gustavo Luis; Gonzalez Cid, Marcela Beatriz; de Campos Nebel, Ildefonso Marcelo; Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells; Elsevier Science; Mutation Research-fundamental And Molecular Mechanisms Of Mutagenesis; 781; 11-2015; 37-48 0027-5107 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/41467 |
identifier_str_mv |
Borda, Miguel Angel; Palmitelli, Micaela; Verón, Gustavo Luis; Gonzalez Cid, Marcela Beatriz; de Campos Nebel, Ildefonso Marcelo; Tyrosyl-DNA-phosphodiesterase I (TDP1) participates in the removal and repair of stabilized-Top2α cleavage complexes in human cells; Elsevier Science; Mutation Research-fundamental And Molecular Mechanisms Of Mutagenesis; 781; 11-2015; 37-48 0027-5107 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0027510715300427 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mrfmmm.2015.09.003 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |