Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível
Ano de defesa: | 2020 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica
|
Departamento: |
Bioquímica
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/22015 |
Resumo: | Photodynamic Therapy (PDT) combined with the use of molecules containing the porphyrin ring associated with ruthenium transition metal has become an alternative method to the traditional treatment of melanoma. Here, we demonstrate DNA damage analyses, photocleavage properties and cytotoxicity of a free-based meso-terta-ruthenated porphyrin (H2RuTPyP). Cytotoxic and genotoxic potential of H2RuTPyP was investigated by colorimetric assay and by plasmid DNA photocleavage analysis followed by incubation with specific DNA repair enzymes, respectively. H2RuTPyP porphyrin efficiently induced DNA damage at the lowest concentration of 5.0 μM, resulting in its complete degradation at 15 μM. The presence of different scavengers for reactive oxygen species during exposure to visible light did not decrease the formation of DNA breaks, suggesting a hydrolytic mechanism for the breakdown of this molecule. In addition, the compound H2RuTPyP exhibited a higher cytotoxicity towards melanoma cell line compared to keratinocytes. Therefore, H2RuTPyP compound demonstrated to be a very promising effective photosensitizer, representing an alternative for the development of new treatments for melanoma by PDT. |
id |
UFSM-20_6a37219cecb8cd42d49352d4d35ede4d |
---|---|
oai_identifier_str |
oai:repositorio.ufsm.br:1/22015 |
network_acronym_str |
UFSM-20 |
network_name_str |
Manancial - Repositório Digital da UFSM |
repository_id_str |
|
spelling |
2021-08-20T13:14:05Z2021-08-20T13:14:05Z2020-12-03http://repositorio.ufsm.br/handle/1/22015Photodynamic Therapy (PDT) combined with the use of molecules containing the porphyrin ring associated with ruthenium transition metal has become an alternative method to the traditional treatment of melanoma. Here, we demonstrate DNA damage analyses, photocleavage properties and cytotoxicity of a free-based meso-terta-ruthenated porphyrin (H2RuTPyP). Cytotoxic and genotoxic potential of H2RuTPyP was investigated by colorimetric assay and by plasmid DNA photocleavage analysis followed by incubation with specific DNA repair enzymes, respectively. H2RuTPyP porphyrin efficiently induced DNA damage at the lowest concentration of 5.0 μM, resulting in its complete degradation at 15 μM. The presence of different scavengers for reactive oxygen species during exposure to visible light did not decrease the formation of DNA breaks, suggesting a hydrolytic mechanism for the breakdown of this molecule. In addition, the compound H2RuTPyP exhibited a higher cytotoxicity towards melanoma cell line compared to keratinocytes. Therefore, H2RuTPyP compound demonstrated to be a very promising effective photosensitizer, representing an alternative for the development of new treatments for melanoma by PDT.A Terapia Fotodinâmica (TFD), aliada ao uso de moléculas contendo o anel porfirínico associado ao metal de transição Rutênio, tem representado um método alternativo ao tratamento tradicional do melanoma. Aqui, demonstramos as análises de dano ao DNA, propriedades de fotoclivagem e citotoxicidade de uma porfirina meso-tetra-rutenada de base livre (H2RuTPyP). O potencial citotóxico e genotóxico de H2RuTPyP foi investigado por ensaio colorimétrico de tetrazólio e pela análise de fotoclivagem de DNA plasmidial seguida de incubação com enzimas específicas de reparo de DNA, respectivamente. A porfirina H2RuTPyP induziu eficientemente danos ao DNA na concentração mais baixa de 5,0 μM, resultando em sua degradação completa a 15 μM. A presença de diferentes sequestradores para espécies reativas de oxigênio durante a exposição à luz visível não diminuiu a formação de quebras de DNA, sugerindo um mecanismo hidrolítico para a quebra desta molécula. Além disso, o composto H2RuTPyP exibiu citotoxicidade mais eleveda frente a linhagem celular de melanoma, em comparação com a de queratinócitos. Portanto, o composto H2RuTPyP motrou-se um fotossensibilizador eficaz muito promissor, representando uma alternativa para o desenvolvimento de novos tratamentos para o melanoma por meio da TFD.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica ToxicológicaUFSMBrasilBioquímicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessMelanomaTerapia fotodinâmicaPorfirina de rutênioGenotoxicidadePhotodynamic therapyRuthenium porphyrinGenotoxicityCNPQ::CIENCIAS BIOLOGICASDano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visívelDNA damage induced by photoclivage and cytoxotic analysis of a meso-tetra-rutenated porphyrin under visible light radiationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisSchuch, André Passagliahttp://lattes.cnpq.br/4932611269622766Rodrigues Junior, Luiz CarlosRech, Virgínia CieloHörner, RosmariOliveira, Sara Marchesan dehttp://lattes.cnpq.br/7726613505527400Vizzotto, Bruno Stefanello200000000006600600600600600600600d93539a4-7b55-44e5-9c20-52601682b4f7e532cb9f-bc7c-466a-a578-2aeee155b18825a7c2c5-6e8f-4742-a3b0-98460d00e2c75223c71d-08cf-4fe9-a16b-f8577a94e351f4ee4a14-1e16-489c-a3ac-a234a7f2b6314075277b-8b36-46ac-b25d-abf48b5aa548reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdfTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdfTeseapplication/pdf2807339http://repositorio.ufsm.br/bitstream/1/22015/1/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf6f33b24f86c00dc26a76269c8be717b8MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/22015/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81956http://repositorio.ufsm.br/bitstream/1/22015/3/license.txt2f0571ecee68693bd5cd3f17c1e075dfMD53TEXTTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.txtTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.txtExtracted texttext/plain186972http://repositorio.ufsm.br/bitstream/1/22015/4/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.txt8f47a266dff58ec7db35554abd68b836MD54THUMBNAILTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.jpgTES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.jpgIM Thumbnailimage/jpeg5233http://repositorio.ufsm.br/bitstream/1/22015/5/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.jpgc2e2f8daad1635b1fe30e16d408c08f1MD551/220152021-08-21 03:03:10.024oai:repositorio.ufsm.br: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ório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132021-08-21T06:03:10Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
dc.title.alternative.eng.fl_str_mv |
DNA damage induced by photoclivage and cytoxotic analysis of a meso-tetra-rutenated porphyrin under visible light radiation |
title |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
spellingShingle |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível Vizzotto, Bruno Stefanello Melanoma Terapia fotodinâmica Porfirina de rutênio Genotoxicidade Photodynamic therapy Ruthenium porphyrin Genotoxicity CNPQ::CIENCIAS BIOLOGICAS |
title_short |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
title_full |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
title_fullStr |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
title_full_unstemmed |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
title_sort |
Dano ao DNA induzido por fotoclivagem e análise citotóxica de uma porfirina meso-tetra-rutenada sob irradiação por luz visível |
author |
Vizzotto, Bruno Stefanello |
author_facet |
Vizzotto, Bruno Stefanello |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Schuch, André Passaglia |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4932611269622766 |
dc.contributor.referee1.fl_str_mv |
Rodrigues Junior, Luiz Carlos |
dc.contributor.referee2.fl_str_mv |
Rech, Virgínia Cielo |
dc.contributor.referee3.fl_str_mv |
Hörner, Rosmari |
dc.contributor.referee4.fl_str_mv |
Oliveira, Sara Marchesan de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7726613505527400 |
dc.contributor.author.fl_str_mv |
Vizzotto, Bruno Stefanello |
contributor_str_mv |
Schuch, André Passaglia Rodrigues Junior, Luiz Carlos Rech, Virgínia Cielo Hörner, Rosmari Oliveira, Sara Marchesan de |
dc.subject.por.fl_str_mv |
Melanoma Terapia fotodinâmica Porfirina de rutênio Genotoxicidade |
topic |
Melanoma Terapia fotodinâmica Porfirina de rutênio Genotoxicidade Photodynamic therapy Ruthenium porphyrin Genotoxicity CNPQ::CIENCIAS BIOLOGICAS |
dc.subject.eng.fl_str_mv |
Photodynamic therapy Ruthenium porphyrin Genotoxicity |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS BIOLOGICAS |
description |
Photodynamic Therapy (PDT) combined with the use of molecules containing the porphyrin ring associated with ruthenium transition metal has become an alternative method to the traditional treatment of melanoma. Here, we demonstrate DNA damage analyses, photocleavage properties and cytotoxicity of a free-based meso-terta-ruthenated porphyrin (H2RuTPyP). Cytotoxic and genotoxic potential of H2RuTPyP was investigated by colorimetric assay and by plasmid DNA photocleavage analysis followed by incubation with specific DNA repair enzymes, respectively. H2RuTPyP porphyrin efficiently induced DNA damage at the lowest concentration of 5.0 μM, resulting in its complete degradation at 15 μM. The presence of different scavengers for reactive oxygen species during exposure to visible light did not decrease the formation of DNA breaks, suggesting a hydrolytic mechanism for the breakdown of this molecule. In addition, the compound H2RuTPyP exhibited a higher cytotoxicity towards melanoma cell line compared to keratinocytes. Therefore, H2RuTPyP compound demonstrated to be a very promising effective photosensitizer, representing an alternative for the development of new treatments for melanoma by PDT. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-12-03 |
dc.date.accessioned.fl_str_mv |
2021-08-20T13:14:05Z |
dc.date.available.fl_str_mv |
2021-08-20T13:14:05Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/22015 |
url |
http://repositorio.ufsm.br/handle/1/22015 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
200000000006 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 600 600 600 |
dc.relation.authority.fl_str_mv |
d93539a4-7b55-44e5-9c20-52601682b4f7 e532cb9f-bc7c-466a-a578-2aeee155b188 25a7c2c5-6e8f-4742-a3b0-98460d00e2c7 5223c71d-08cf-4fe9-a16b-f8577a94e351 f4ee4a14-1e16-489c-a3ac-a234a7f2b631 4075277b-8b36-46ac-b25d-abf48b5aa548 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Bioquímica |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
bitstream.url.fl_str_mv |
http://repositorio.ufsm.br/bitstream/1/22015/1/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf http://repositorio.ufsm.br/bitstream/1/22015/2/license_rdf http://repositorio.ufsm.br/bitstream/1/22015/3/license.txt http://repositorio.ufsm.br/bitstream/1/22015/4/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.txt http://repositorio.ufsm.br/bitstream/1/22015/5/TES_PPGCBBT_2020_VIZZOTTO_BRUNO.pdf.jpg |
bitstream.checksum.fl_str_mv |
6f33b24f86c00dc26a76269c8be717b8 4460e5956bc1d1639be9ae6146a50347 2f0571ecee68693bd5cd3f17c1e075df 8f47a266dff58ec7db35554abd68b836 c2e2f8daad1635b1fe30e16d408c08f1 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
|
_version_ |
1794524414864261120 |