In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Brasileira de Cancerologia (Online) |
Texto Completo: | https://rbc.inca.gov.br/index.php/revista/article/view/1988 |
Resumo: | Objectives: The present study aims to demonstrate the initial results of the use of Bioluminescence Imaging technique (BLI) as a mean to monitor the tumor treatment response after aminolevulinic acid-Photodynamic Therapy (ALA-PDT) in rat gliosarcoma 9L cells. Methods: In the present study, the rat gliosarcoma 9L cells were transfected with a plasmid containing the luciferase gene, allowing this cell to produce luciferase protein, one of the substrates for the bioluminescence reaction. In the present study PDT was performed using different light and ALA doses. To validate the bioluminescence imaging technique as a mean to monitor the tumor cell response and to verify the correlation between cell death and the bioluminescence signal, Sulphorodamine B colorimetric assay (SRB) was used. Results: The results from the present study showed excelent correlation between the number of cells and the bioluminescent signal (R2 = 0.996). The SRB viability assay showed an excelent correlation between the relative number of surviving cells after PDT and the bioluminescent signal, confirming that the bioluminescence imaging could be used as a reliable technique to monitor the tumor cell response after PDT. PDT treatment showed that cell tumor cell death induction varies with the light and photosensitizer doses. Thus, higher PDT doses resulted in higher levels of cell death rate in vitro observed by bioluminescence imaging technique 48 h after PDT. Conclusions: The present study demonstrates that BLI could be used to study the tumor response after PDT treatment. Future work using in vivo models are currently ongoing to validate this technique. |
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In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence ImagingResposta in vitro de Células Gliossarcoma 9L após Terapia Fotodinâmica utilizando Imagem de BioluminescênciaTerapia fotodinâmicaBioluminescênciaGliossarcomaLuciferaseProtoporfirina IXÁcido aminolevulínicoPhotodynamic therapyBioluminescenceGliosarcomaLuciferaseProtoporphyrin IXAminolevulinic acidObjectives: The present study aims to demonstrate the initial results of the use of Bioluminescence Imaging technique (BLI) as a mean to monitor the tumor treatment response after aminolevulinic acid-Photodynamic Therapy (ALA-PDT) in rat gliosarcoma 9L cells. Methods: In the present study, the rat gliosarcoma 9L cells were transfected with a plasmid containing the luciferase gene, allowing this cell to produce luciferase protein, one of the substrates for the bioluminescence reaction. In the present study PDT was performed using different light and ALA doses. To validate the bioluminescence imaging technique as a mean to monitor the tumor cell response and to verify the correlation between cell death and the bioluminescence signal, Sulphorodamine B colorimetric assay (SRB) was used. Results: The results from the present study showed excelent correlation between the number of cells and the bioluminescent signal (R2 = 0.996). The SRB viability assay showed an excelent correlation between the relative number of surviving cells after PDT and the bioluminescent signal, confirming that the bioluminescence imaging could be used as a reliable technique to monitor the tumor cell response after PDT. PDT treatment showed that cell tumor cell death induction varies with the light and photosensitizer doses. Thus, higher PDT doses resulted in higher levels of cell death rate in vitro observed by bioluminescence imaging technique 48 h after PDT. Conclusions: The present study demonstrates that BLI could be used to study the tumor response after PDT treatment. Future work using in vivo models are currently ongoing to validate this technique.Objetivos: O presente estudo tem o objetivo de demonstrar os resultados iniciais da utilização da técnica de imagem de bioluminescência como método de monitoramento do tratamento de células de gliossarcoma de rato 9L após Terapia Fotodinâmica (TFD) utilizando o ácido aminolevulínico (ALA) como agente fotossensibilizante. Métodos: Para o presente estudo, células 9L foram transfectadas com um plasmídeo contendo o gene da luciferase, permitindo que essa linhagem celular produzisse a proteína luciferase, um dos substratos necessários para a reação de bioluminescência. No presente estudo, a TFD foi realizada utilizando diferentes doses de luz e de ácido aminolevulínico. Para validar a técnica de imagem de bioluminescência como método para o monitoramento da resposta de células tumorais e para a verificação da correlação entre o sinal luminoso e o grau de morte celular após TFD, foi utilizado o ensaio de viabilidade celular com Sulforodamina B (SRB). Resultados: Os resultados deste trabalho mostram alta correlação entre o número de células e o sinal de bioluminescência (R2 = 0,996). Os ensaios de viabilidade celular utilizando a técnica SRB, mostraram excelente correlação entre o número relativo de células sobreviventes após TFD e o sinal de bioluminescência, mostrando que a técnica de imagem de bioluminescência pode ser utilizada para o monitoramento da resposta tumoral após o tratamento de células tumorais com TFD. Os resultados do tratamento das células com terapia fotodinâmica mostram que a taxa de indução de morte celular varia de acordo com a dose de luz e fotossensibilizante empregada durante o tratamento. Nesse sentido, doses maiores de TFD resultaram em níveis mais elevados de indução de morte celular, com efeitos mais prolongados observados através do sinal bioluminescente decorridos 48 horas após a TFD. Conclusão: Este estudo demonstra que a técnica de imagem de bioluminescência pode ser utilizada para o estudo dos efeitos da terapia fotodinâmica em células tumorais. Trabalhos em animais estão em andamento no presente momento para validar a técnica de imagem de bioluminescência após TFD in vivo.INCA2005-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtigos, Avaliado pelos paresapplication/pdfhttps://rbc.inca.gov.br/index.php/revista/article/view/198810.32635/2176-9745.RBC.2005v51n1.1988Revista Brasileira de Cancerologia; Vol. 51 No. 1 (2005): Jan./Feb./Mar.; 15-22Revista Brasileira de Cancerologia; Vol. 51 Núm. 1 (2005): ene./feb./mar.; 15-22Revista Brasileira de Cancerologia; v. 51 n. 1 (2005): jan./fev./mar.; 15-222176-9745reponame:Revista Brasileira de Cancerologia (Online)instname:Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA)instacron:INCAporhttps://rbc.inca.gov.br/index.php/revista/article/view/1988/1213Moriyama, Eduardo H. Zângaro, Renato A. Pacheco, Marcos T. Villaverde, Antonio B. Wilson, Brian C. info:eu-repo/semantics/openAccess2021-11-29T20:31:19Zoai:rbc.inca.gov.br:article/1988Revistahttps://rbc.inca.gov.br/index.php/revistaPUBhttps://rbc.inca.gov.br/index.php/revista/oairbc@inca.gov.br0034-71162176-9745opendoar:2021-11-29T20:31:19Revista Brasileira de Cancerologia (Online) - Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA)false |
dc.title.none.fl_str_mv |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging Resposta in vitro de Células Gliossarcoma 9L após Terapia Fotodinâmica utilizando Imagem de Bioluminescência |
title |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
spellingShingle |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging Moriyama, Eduardo H. Terapia fotodinâmica Bioluminescência Gliossarcoma Luciferase Protoporfirina IX Ácido aminolevulínico Photodynamic therapy Bioluminescence Gliosarcoma Luciferase Protoporphyrin IX Aminolevulinic acid |
title_short |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
title_full |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
title_fullStr |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
title_full_unstemmed |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
title_sort |
In Vitro Gliosarcoma 9L Cells Response after Photodynamic Therapy Using Bioluminescence Imaging |
author |
Moriyama, Eduardo H. |
author_facet |
Moriyama, Eduardo H. Zângaro, Renato A. Pacheco, Marcos T. Villaverde, Antonio B. Wilson, Brian C. |
author_role |
author |
author2 |
Zângaro, Renato A. Pacheco, Marcos T. Villaverde, Antonio B. Wilson, Brian C. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Moriyama, Eduardo H. Zângaro, Renato A. Pacheco, Marcos T. Villaverde, Antonio B. Wilson, Brian C. |
dc.subject.por.fl_str_mv |
Terapia fotodinâmica Bioluminescência Gliossarcoma Luciferase Protoporfirina IX Ácido aminolevulínico Photodynamic therapy Bioluminescence Gliosarcoma Luciferase Protoporphyrin IX Aminolevulinic acid |
topic |
Terapia fotodinâmica Bioluminescência Gliossarcoma Luciferase Protoporfirina IX Ácido aminolevulínico Photodynamic therapy Bioluminescence Gliosarcoma Luciferase Protoporphyrin IX Aminolevulinic acid |
description |
Objectives: The present study aims to demonstrate the initial results of the use of Bioluminescence Imaging technique (BLI) as a mean to monitor the tumor treatment response after aminolevulinic acid-Photodynamic Therapy (ALA-PDT) in rat gliosarcoma 9L cells. Methods: In the present study, the rat gliosarcoma 9L cells were transfected with a plasmid containing the luciferase gene, allowing this cell to produce luciferase protein, one of the substrates for the bioluminescence reaction. In the present study PDT was performed using different light and ALA doses. To validate the bioluminescence imaging technique as a mean to monitor the tumor cell response and to verify the correlation between cell death and the bioluminescence signal, Sulphorodamine B colorimetric assay (SRB) was used. Results: The results from the present study showed excelent correlation between the number of cells and the bioluminescent signal (R2 = 0.996). The SRB viability assay showed an excelent correlation between the relative number of surviving cells after PDT and the bioluminescent signal, confirming that the bioluminescence imaging could be used as a reliable technique to monitor the tumor cell response after PDT. PDT treatment showed that cell tumor cell death induction varies with the light and photosensitizer doses. Thus, higher PDT doses resulted in higher levels of cell death rate in vitro observed by bioluminescence imaging technique 48 h after PDT. Conclusions: The present study demonstrates that BLI could be used to study the tumor response after PDT treatment. Future work using in vivo models are currently ongoing to validate this technique. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-03-31 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigos, Avaliado pelos pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://rbc.inca.gov.br/index.php/revista/article/view/1988 10.32635/2176-9745.RBC.2005v51n1.1988 |
url |
https://rbc.inca.gov.br/index.php/revista/article/view/1988 |
identifier_str_mv |
10.32635/2176-9745.RBC.2005v51n1.1988 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://rbc.inca.gov.br/index.php/revista/article/view/1988/1213 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
INCA |
publisher.none.fl_str_mv |
INCA |
dc.source.none.fl_str_mv |
Revista Brasileira de Cancerologia; Vol. 51 No. 1 (2005): Jan./Feb./Mar.; 15-22 Revista Brasileira de Cancerologia; Vol. 51 Núm. 1 (2005): ene./feb./mar.; 15-22 Revista Brasileira de Cancerologia; v. 51 n. 1 (2005): jan./fev./mar.; 15-22 2176-9745 reponame:Revista Brasileira de Cancerologia (Online) instname:Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA) instacron:INCA |
instname_str |
Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA) |
instacron_str |
INCA |
institution |
INCA |
reponame_str |
Revista Brasileira de Cancerologia (Online) |
collection |
Revista Brasileira de Cancerologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Cancerologia (Online) - Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA) |
repository.mail.fl_str_mv |
rbc@inca.gov.br |
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1797042242052947968 |