Converging fate of the oxidation and reduction of 8-thioguanosine
- Autores
- Taras Goslinska, Katarzyna; Vetica, Fabrizio; Barata Vallejo, Sebastian; Triantakostanti, Virginia; Marciniak, Bronislaw; Chatgilialoglu, Chryssostomos
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Thione-containing nucleobases have attracted the attention of the scientific community for their application in oncology, virology, and transplantology. The detailed understanding of the reactivity of the purine derivative 8-thioguanosine (8-TG) with reactive oxygen species (ROS) and free radicals is crucial for its biological relevance. An extensive investigation on the fate of 8-TG under both reductive and oxidative conditions is here reported, and it was tested by employing steady-state photooxidation, laser flash photolysis, as well as γ-radiolysis in aqueous solutions. The characterization of the 8-TG T1 excited state by laser flash photolysis and the photooxidation experiments confirmed that singlet oxygen is a crucial intermediate in the formation of the unexpected reduced product guanosine, without the formation of the usual oxygenated sulfinic or sulfonic acids. Furthermore, a thorough screening of different radiolytic conditions upon γ-radiation afforded the reduced product. These results were rationalized by performing control experiments in the predominant presence of each reactive species formed by radiolysis of water, and the mechanistic pathway scenario was postulated on these bases.
Fil: Taras Goslinska, Katarzyna. Adam Mickiewicz University; Polonia
Fil: Vetica, Fabrizio. Consiglio Nazionale delle Ricerche; Italia
Fil: Barata Vallejo, Sebastian. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina
Fil: Triantakostanti, Virginia. Consiglio Nazionale delle Ricerche; Italia
Fil: Marciniak, Bronislaw. Adam Mickiewicz University; Polonia
Fil: Chatgilialoglu, Chryssostomos. Consiglio Nazionale delle Ricerche; Italia - Materia
-
FREE RADICALS
LASER FLASH PHOTOLYSIS
NUCLEOSIDES
PHOTOLYSIS
REACTION MECHANISM
SINGLET OXYGEN - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/155549
Ver los metadatos del registro completo
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Converging fate of the oxidation and reduction of 8-thioguanosineTaras Goslinska, KatarzynaVetica, FabrizioBarata Vallejo, SebastianTriantakostanti, VirginiaMarciniak, BronislawChatgilialoglu, ChryssostomosFREE RADICALSLASER FLASH PHOTOLYSISNUCLEOSIDESPHOTOLYSISREACTION MECHANISMSINGLET OXYGENhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Thione-containing nucleobases have attracted the attention of the scientific community for their application in oncology, virology, and transplantology. The detailed understanding of the reactivity of the purine derivative 8-thioguanosine (8-TG) with reactive oxygen species (ROS) and free radicals is crucial for its biological relevance. An extensive investigation on the fate of 8-TG under both reductive and oxidative conditions is here reported, and it was tested by employing steady-state photooxidation, laser flash photolysis, as well as γ-radiolysis in aqueous solutions. The characterization of the 8-TG T1 excited state by laser flash photolysis and the photooxidation experiments confirmed that singlet oxygen is a crucial intermediate in the formation of the unexpected reduced product guanosine, without the formation of the usual oxygenated sulfinic or sulfonic acids. Furthermore, a thorough screening of different radiolytic conditions upon γ-radiation afforded the reduced product. These results were rationalized by performing control experiments in the predominant presence of each reactive species formed by radiolysis of water, and the mechanistic pathway scenario was postulated on these bases.Fil: Taras Goslinska, Katarzyna. Adam Mickiewicz University; PoloniaFil: Vetica, Fabrizio. Consiglio Nazionale delle Ricerche; ItaliaFil: Barata Vallejo, Sebastian. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Triantakostanti, Virginia. Consiglio Nazionale delle Ricerche; ItaliaFil: Marciniak, Bronislaw. Adam Mickiewicz University; PoloniaFil: Chatgilialoglu, Chryssostomos. Consiglio Nazionale delle Ricerche; ItaliaMolecular Diversity Preservation International2019-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/155549Taras Goslinska, Katarzyna; Vetica, Fabrizio; Barata Vallejo, Sebastian; Triantakostanti, Virginia; Marciniak, Bronislaw; et al.; Converging fate of the oxidation and reduction of 8-thioguanosine; Molecular Diversity Preservation International; Molecules; 24; 17; 8-20191420-3049CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/molecules24173143info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1420-3049/24/17/3143info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:39:29Zoai:ri.conicet.gov.ar:11336/155549instacron: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 10:39:29.342CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Converging fate of the oxidation and reduction of 8-thioguanosine |
title |
Converging fate of the oxidation and reduction of 8-thioguanosine |
spellingShingle |
Converging fate of the oxidation and reduction of 8-thioguanosine Taras Goslinska, Katarzyna FREE RADICALS LASER FLASH PHOTOLYSIS NUCLEOSIDES PHOTOLYSIS REACTION MECHANISM SINGLET OXYGEN |
title_short |
Converging fate of the oxidation and reduction of 8-thioguanosine |
title_full |
Converging fate of the oxidation and reduction of 8-thioguanosine |
title_fullStr |
Converging fate of the oxidation and reduction of 8-thioguanosine |
title_full_unstemmed |
Converging fate of the oxidation and reduction of 8-thioguanosine |
title_sort |
Converging fate of the oxidation and reduction of 8-thioguanosine |
dc.creator.none.fl_str_mv |
Taras Goslinska, Katarzyna Vetica, Fabrizio Barata Vallejo, Sebastian Triantakostanti, Virginia Marciniak, Bronislaw Chatgilialoglu, Chryssostomos |
author |
Taras Goslinska, Katarzyna |
author_facet |
Taras Goslinska, Katarzyna Vetica, Fabrizio Barata Vallejo, Sebastian Triantakostanti, Virginia Marciniak, Bronislaw Chatgilialoglu, Chryssostomos |
author_role |
author |
author2 |
Vetica, Fabrizio Barata Vallejo, Sebastian Triantakostanti, Virginia Marciniak, Bronislaw Chatgilialoglu, Chryssostomos |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
FREE RADICALS LASER FLASH PHOTOLYSIS NUCLEOSIDES PHOTOLYSIS REACTION MECHANISM SINGLET OXYGEN |
topic |
FREE RADICALS LASER FLASH PHOTOLYSIS NUCLEOSIDES PHOTOLYSIS REACTION MECHANISM SINGLET OXYGEN |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Thione-containing nucleobases have attracted the attention of the scientific community for their application in oncology, virology, and transplantology. The detailed understanding of the reactivity of the purine derivative 8-thioguanosine (8-TG) with reactive oxygen species (ROS) and free radicals is crucial for its biological relevance. An extensive investigation on the fate of 8-TG under both reductive and oxidative conditions is here reported, and it was tested by employing steady-state photooxidation, laser flash photolysis, as well as γ-radiolysis in aqueous solutions. The characterization of the 8-TG T1 excited state by laser flash photolysis and the photooxidation experiments confirmed that singlet oxygen is a crucial intermediate in the formation of the unexpected reduced product guanosine, without the formation of the usual oxygenated sulfinic or sulfonic acids. Furthermore, a thorough screening of different radiolytic conditions upon γ-radiation afforded the reduced product. These results were rationalized by performing control experiments in the predominant presence of each reactive species formed by radiolysis of water, and the mechanistic pathway scenario was postulated on these bases. Fil: Taras Goslinska, Katarzyna. Adam Mickiewicz University; Polonia Fil: Vetica, Fabrizio. Consiglio Nazionale delle Ricerche; Italia Fil: Barata Vallejo, Sebastian. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina Fil: Triantakostanti, Virginia. Consiglio Nazionale delle Ricerche; Italia Fil: Marciniak, Bronislaw. Adam Mickiewicz University; Polonia Fil: Chatgilialoglu, Chryssostomos. Consiglio Nazionale delle Ricerche; Italia |
description |
Thione-containing nucleobases have attracted the attention of the scientific community for their application in oncology, virology, and transplantology. The detailed understanding of the reactivity of the purine derivative 8-thioguanosine (8-TG) with reactive oxygen species (ROS) and free radicals is crucial for its biological relevance. An extensive investigation on the fate of 8-TG under both reductive and oxidative conditions is here reported, and it was tested by employing steady-state photooxidation, laser flash photolysis, as well as γ-radiolysis in aqueous solutions. The characterization of the 8-TG T1 excited state by laser flash photolysis and the photooxidation experiments confirmed that singlet oxygen is a crucial intermediate in the formation of the unexpected reduced product guanosine, without the formation of the usual oxygenated sulfinic or sulfonic acids. Furthermore, a thorough screening of different radiolytic conditions upon γ-radiation afforded the reduced product. These results were rationalized by performing control experiments in the predominant presence of each reactive species formed by radiolysis of water, and the mechanistic pathway scenario was postulated on these bases. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-08 |
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/11336/155549 Taras Goslinska, Katarzyna; Vetica, Fabrizio; Barata Vallejo, Sebastian; Triantakostanti, Virginia; Marciniak, Bronislaw; et al.; Converging fate of the oxidation and reduction of 8-thioguanosine; Molecular Diversity Preservation International; Molecules; 24; 17; 8-2019 1420-3049 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/155549 |
identifier_str_mv |
Taras Goslinska, Katarzyna; Vetica, Fabrizio; Barata Vallejo, Sebastian; Triantakostanti, Virginia; Marciniak, Bronislaw; et al.; Converging fate of the oxidation and reduction of 8-thioguanosine; Molecular Diversity Preservation International; Molecules; 24; 17; 8-2019 1420-3049 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3390/molecules24173143 info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1420-3049/24/17/3143 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Molecular Diversity Preservation International |
publisher.none.fl_str_mv |
Molecular Diversity Preservation International |
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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1844614420245774336 |
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13.070432 |