Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin
- Autores
- Cerda, Maria Belen; Lloyd, Rodrigo; Batalla, Milena; Giannoni, Florencia; Casalia, Mariana Laura; Policastro, Lucia Laura
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Colorectal cancer (CRC) remains one of the leading causes of cancer-related death worldwide. Antioxidant enzymes decrease the generation of ionizing radiation (IR)-induced free radicals and therefore are associate to radioresistance. The main goal of this work is to study the involvement of peroxiredoxin-2 (Prx2) in the radio and chemoradiotherapy response in CRC cells in vitro and in vivo. We found that Prx2 oxidation state is associated to differential response to ionizing radiation in CRC cell lines. HCT116 radioresistant CRC cell line have lower ROS levels and a higher monomer/dimer Prx2 ratio, compared to halfway resistant Caco-2 and T84, and radiosensitive LoVo cell line. Constitutive and transient Prx2 silencing in CRC cells increase ROS levels, and most importantly, enhance in vitro radiation sensitivity. In addition, we showed that administration of IR plus oxaliplatin in down regulated Prx2 HCT116 cells has higher citotoxic effect than in control cells. Finally, radiosensitizing effect of Prx2 depletion was confirmed in vivo. These results suggest that Prx2 is an important component in tumoral radiation response, and their inhibition could improve radio and chemoradiotherapy protocols in patients with CRC.
Fil: Cerda, Maria Belen. Comisión Nacional de Energía Atómica; Argentina
Fil: Lloyd, Rodrigo. Comisión Nacional de Energía Atómica; Argentina
Fil: Batalla, Milena. Comisión Nacional de Energía Atómica; Argentina
Fil: Giannoni, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Casalia, Mariana Laura. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Oncología "Ángel H. Roffo"; Argentina
Fil: Policastro, Lucia Laura. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Colorectal Cancer
Oxaliplatin
Peroxiredoxin 2
Radiation Sensitivity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/40833
Ver los metadatos del registro completo
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Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatinCerda, Maria BelenLloyd, RodrigoBatalla, MilenaGiannoni, FlorenciaCasalia, Mariana LauraPolicastro, Lucia LauraColorectal CancerOxaliplatinPeroxiredoxin 2Radiation Sensitivityhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Colorectal cancer (CRC) remains one of the leading causes of cancer-related death worldwide. Antioxidant enzymes decrease the generation of ionizing radiation (IR)-induced free radicals and therefore are associate to radioresistance. The main goal of this work is to study the involvement of peroxiredoxin-2 (Prx2) in the radio and chemoradiotherapy response in CRC cells in vitro and in vivo. We found that Prx2 oxidation state is associated to differential response to ionizing radiation in CRC cell lines. HCT116 radioresistant CRC cell line have lower ROS levels and a higher monomer/dimer Prx2 ratio, compared to halfway resistant Caco-2 and T84, and radiosensitive LoVo cell line. Constitutive and transient Prx2 silencing in CRC cells increase ROS levels, and most importantly, enhance in vitro radiation sensitivity. In addition, we showed that administration of IR plus oxaliplatin in down regulated Prx2 HCT116 cells has higher citotoxic effect than in control cells. Finally, radiosensitizing effect of Prx2 depletion was confirmed in vivo. These results suggest that Prx2 is an important component in tumoral radiation response, and their inhibition could improve radio and chemoradiotherapy protocols in patients with CRC.Fil: Cerda, Maria Belen. Comisión Nacional de Energía Atómica; ArgentinaFil: Lloyd, Rodrigo. Comisión Nacional de Energía Atómica; ArgentinaFil: Batalla, Milena. Comisión Nacional de Energía Atómica; ArgentinaFil: Giannoni, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Casalia, Mariana Laura. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Oncología "Ángel H. Roffo"; ArgentinaFil: Policastro, Lucia Laura. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Ireland2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40833Cerda, Maria Belen; Lloyd, Rodrigo; Batalla, Milena; Giannoni, Florencia; Casalia, Mariana Laura; et al.; Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin; Elsevier Ireland; Cancer Letters; 388; 3-2017; 312-3190304-3835CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.canlet.2016.12.009info:eu-repo/semantics/altIdentifier/url/http://www.cancerletters.info/article/S0304-3835(16)30762-5/fulltextinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:48Zoai:ri.conicet.gov.ar:11336/40833instacron: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 09:40:48.36CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
title |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
spellingShingle |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin Cerda, Maria Belen Colorectal Cancer Oxaliplatin Peroxiredoxin 2 Radiation Sensitivity |
title_short |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
title_full |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
title_fullStr |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
title_full_unstemmed |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
title_sort |
Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin |
dc.creator.none.fl_str_mv |
Cerda, Maria Belen Lloyd, Rodrigo Batalla, Milena Giannoni, Florencia Casalia, Mariana Laura Policastro, Lucia Laura |
author |
Cerda, Maria Belen |
author_facet |
Cerda, Maria Belen Lloyd, Rodrigo Batalla, Milena Giannoni, Florencia Casalia, Mariana Laura Policastro, Lucia Laura |
author_role |
author |
author2 |
Lloyd, Rodrigo Batalla, Milena Giannoni, Florencia Casalia, Mariana Laura Policastro, Lucia Laura |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Colorectal Cancer Oxaliplatin Peroxiredoxin 2 Radiation Sensitivity |
topic |
Colorectal Cancer Oxaliplatin Peroxiredoxin 2 Radiation Sensitivity |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Colorectal cancer (CRC) remains one of the leading causes of cancer-related death worldwide. Antioxidant enzymes decrease the generation of ionizing radiation (IR)-induced free radicals and therefore are associate to radioresistance. The main goal of this work is to study the involvement of peroxiredoxin-2 (Prx2) in the radio and chemoradiotherapy response in CRC cells in vitro and in vivo. We found that Prx2 oxidation state is associated to differential response to ionizing radiation in CRC cell lines. HCT116 radioresistant CRC cell line have lower ROS levels and a higher monomer/dimer Prx2 ratio, compared to halfway resistant Caco-2 and T84, and radiosensitive LoVo cell line. Constitutive and transient Prx2 silencing in CRC cells increase ROS levels, and most importantly, enhance in vitro radiation sensitivity. In addition, we showed that administration of IR plus oxaliplatin in down regulated Prx2 HCT116 cells has higher citotoxic effect than in control cells. Finally, radiosensitizing effect of Prx2 depletion was confirmed in vivo. These results suggest that Prx2 is an important component in tumoral radiation response, and their inhibition could improve radio and chemoradiotherapy protocols in patients with CRC. Fil: Cerda, Maria Belen. Comisión Nacional de Energía Atómica; Argentina Fil: Lloyd, Rodrigo. Comisión Nacional de Energía Atómica; Argentina Fil: Batalla, Milena. Comisión Nacional de Energía Atómica; Argentina Fil: Giannoni, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina Fil: Casalia, Mariana Laura. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Oncología "Ángel H. Roffo"; Argentina Fil: Policastro, Lucia Laura. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
Colorectal cancer (CRC) remains one of the leading causes of cancer-related death worldwide. Antioxidant enzymes decrease the generation of ionizing radiation (IR)-induced free radicals and therefore are associate to radioresistance. The main goal of this work is to study the involvement of peroxiredoxin-2 (Prx2) in the radio and chemoradiotherapy response in CRC cells in vitro and in vivo. We found that Prx2 oxidation state is associated to differential response to ionizing radiation in CRC cell lines. HCT116 radioresistant CRC cell line have lower ROS levels and a higher monomer/dimer Prx2 ratio, compared to halfway resistant Caco-2 and T84, and radiosensitive LoVo cell line. Constitutive and transient Prx2 silencing in CRC cells increase ROS levels, and most importantly, enhance in vitro radiation sensitivity. In addition, we showed that administration of IR plus oxaliplatin in down regulated Prx2 HCT116 cells has higher citotoxic effect than in control cells. Finally, radiosensitizing effect of Prx2 depletion was confirmed in vivo. These results suggest that Prx2 is an important component in tumoral radiation response, and their inhibition could improve radio and chemoradiotherapy protocols in patients with CRC. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03 |
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/11336/40833 Cerda, Maria Belen; Lloyd, Rodrigo; Batalla, Milena; Giannoni, Florencia; Casalia, Mariana Laura; et al.; Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin; Elsevier Ireland; Cancer Letters; 388; 3-2017; 312-319 0304-3835 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/40833 |
identifier_str_mv |
Cerda, Maria Belen; Lloyd, Rodrigo; Batalla, Milena; Giannoni, Florencia; Casalia, Mariana Laura; et al.; Silencing peroxiredoxin-2 sensitizes human colorectal cancer cells to ionizing radiation and oxaliplatin; Elsevier Ireland; Cancer Letters; 388; 3-2017; 312-319 0304-3835 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.canlet.2016.12.009 info:eu-repo/semantics/altIdentifier/url/http://www.cancerletters.info/article/S0304-3835(16)30762-5/fulltext |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Ireland |
publisher.none.fl_str_mv |
Elsevier Ireland |
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) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
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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1844613291346755584 |
score |
13.070432 |