One step towards the quantification of p53-minicircle DNA

Detalhes bibliográficos
Autor(a) principal: Valente, Ana I.
Data de Publicação: 2023
Outros Autores: Tavares, Ana P. M., Sousa, Fani, Freire, Mara G.
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/41783
Resumo: p53-minicircle DNA (mcDNA) is a biopharmaceutical with potential use in the genetic therapy of cancer. Despite the therapeutic relevance of DNA-based products, current clarification and purification steps are complex, resulting in high-cost biopharmaceuticals [1]. The existing strategies for mcDNA isolation are based on chromatographic techniques, such as size-exclusion, hydrophobic interaction, and affinity chromatography. Despite the selectivity achieved with the affinity strategy, it depends on the genetic manipulation of the vector to include specific sequences and/or in the use of enzymes to eliminate impurities [2,3]. Thus, up to date, one of the best strategies resorts to size exclusion chromatography, allowing the recovery of 66% of mcDNA with a purity of 98% [2]. Due to the lack of an efficient purification strategy, a quantification method for mcDNA is non-existent. Considering this, an analytical method based on ion exchange chromatography for mcDNA quantification is under development. Firstly, the p53-mcDNA is produced through the culture of transformed Escherichia coli. Then, the mcDNA is extracted with a commercial kit. The samples obtained after the extraction are applied in developing the new analytic method. Also, an extraction method using ionic liquid (IL)-based aqueous biphasic systems (ABS) is under evaluation for the replacement of the commercial kit used for the purpose. For that, the cytotoxicity of several analogues of glycine-betaine ILs is being also assessed.
id RCAP_4fd995adac7ff67bc12131bc591100aa
oai_identifier_str oai:ria.ua.pt:10773/41783
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling One step towards the quantification of p53-minicircle DNABiopharmaceuticalMinicircle DNAExtractionQuantificationIonic LiquidsCitotoxicityp53-minicircle DNA (mcDNA) is a biopharmaceutical with potential use in the genetic therapy of cancer. Despite the therapeutic relevance of DNA-based products, current clarification and purification steps are complex, resulting in high-cost biopharmaceuticals [1]. The existing strategies for mcDNA isolation are based on chromatographic techniques, such as size-exclusion, hydrophobic interaction, and affinity chromatography. Despite the selectivity achieved with the affinity strategy, it depends on the genetic manipulation of the vector to include specific sequences and/or in the use of enzymes to eliminate impurities [2,3]. Thus, up to date, one of the best strategies resorts to size exclusion chromatography, allowing the recovery of 66% of mcDNA with a purity of 98% [2]. Due to the lack of an efficient purification strategy, a quantification method for mcDNA is non-existent. Considering this, an analytical method based on ion exchange chromatography for mcDNA quantification is under development. Firstly, the p53-mcDNA is produced through the culture of transformed Escherichia coli. Then, the mcDNA is extracted with a commercial kit. The samples obtained after the extraction are applied in developing the new analytic method. Also, an extraction method using ionic liquid (IL)-based aqueous biphasic systems (ABS) is under evaluation for the replacement of the commercial kit used for the purpose. For that, the cytotoxicity of several analogues of glycine-betaine ILs is being also assessed.UA Editora2023-072023-07-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10773/41783eng978-972-789-892-3Valente, Ana I.Tavares, Ana P. M.Sousa, FaniFreire, Mara G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-06T04:55:48Zoai:ria.ua.pt:10773/41783Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:55:48Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv One step towards the quantification of p53-minicircle DNA
title One step towards the quantification of p53-minicircle DNA
spellingShingle One step towards the quantification of p53-minicircle DNA
Valente, Ana I.
Biopharmaceutical
Minicircle DNA
Extraction
Quantification
Ionic Liquids
Citotoxicity
title_short One step towards the quantification of p53-minicircle DNA
title_full One step towards the quantification of p53-minicircle DNA
title_fullStr One step towards the quantification of p53-minicircle DNA
title_full_unstemmed One step towards the quantification of p53-minicircle DNA
title_sort One step towards the quantification of p53-minicircle DNA
author Valente, Ana I.
author_facet Valente, Ana I.
Tavares, Ana P. M.
Sousa, Fani
Freire, Mara G.
author_role author
author2 Tavares, Ana P. M.
Sousa, Fani
Freire, Mara G.
author2_role author
author
author
dc.contributor.author.fl_str_mv Valente, Ana I.
Tavares, Ana P. M.
Sousa, Fani
Freire, Mara G.
dc.subject.por.fl_str_mv Biopharmaceutical
Minicircle DNA
Extraction
Quantification
Ionic Liquids
Citotoxicity
topic Biopharmaceutical
Minicircle DNA
Extraction
Quantification
Ionic Liquids
Citotoxicity
description p53-minicircle DNA (mcDNA) is a biopharmaceutical with potential use in the genetic therapy of cancer. Despite the therapeutic relevance of DNA-based products, current clarification and purification steps are complex, resulting in high-cost biopharmaceuticals [1]. The existing strategies for mcDNA isolation are based on chromatographic techniques, such as size-exclusion, hydrophobic interaction, and affinity chromatography. Despite the selectivity achieved with the affinity strategy, it depends on the genetic manipulation of the vector to include specific sequences and/or in the use of enzymes to eliminate impurities [2,3]. Thus, up to date, one of the best strategies resorts to size exclusion chromatography, allowing the recovery of 66% of mcDNA with a purity of 98% [2]. Due to the lack of an efficient purification strategy, a quantification method for mcDNA is non-existent. Considering this, an analytical method based on ion exchange chromatography for mcDNA quantification is under development. Firstly, the p53-mcDNA is produced through the culture of transformed Escherichia coli. Then, the mcDNA is extracted with a commercial kit. The samples obtained after the extraction are applied in developing the new analytic method. Also, an extraction method using ionic liquid (IL)-based aqueous biphasic systems (ABS) is under evaluation for the replacement of the commercial kit used for the purpose. For that, the cytotoxicity of several analogues of glycine-betaine ILs is being also assessed.
publishDate 2023
dc.date.none.fl_str_mv 2023-07
2023-07-01T00:00:00Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/41783
url http://hdl.handle.net/10773/41783
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 978-972-789-892-3
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UA Editora
publisher.none.fl_str_mv UA Editora
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
_version_ 1817543903510790144