Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/45777 |
Resumo: | Silk-elastin-like proteins (SELPs) are a family of genetically engineered recombinant protein polymers exhibiting mechanical and biological properties suited for a wide range of applications in the biomedicine and materials fields. They are being explored as the next generation of biomaterials but low productivities and use of antibiotics during production undermine their economic viability and safety. We have developed an industrially relevant, scalable, fed-batch process for the high level production of a novel SELP in E. coli in which the commonly used antibiotic selection marker of the expression vector is exchanged for a post segregational suicide system, the separate-component-stabilisation system (SCS). SCS significantly augments SELP productivity but also enhances the product safety profile and reduces process costs by eliminating the use of antibiotics. Plasmid content increased following induction but no significant differences in plasmid levels were discerned when using SCS or the antibiotic selection markers under the controlled fed-batch conditions employed. It is suggested that the absence of competing plasmid-free cells improves host cell viability and enables increased productivity with SCS. With the process developed, 12.8 g L(-1) purified SELP was obtained, this is the highest SELP productivity reported to date and clearly demonstrates the commercial viability of these promising polymers. |
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Antibiotic free selection for the high level biosynthesis of a silk-elastin-like proteinCiências Naturais::Ciências BiológicasScience & TechnologySilk-elastin-like proteins (SELPs) are a family of genetically engineered recombinant protein polymers exhibiting mechanical and biological properties suited for a wide range of applications in the biomedicine and materials fields. They are being explored as the next generation of biomaterials but low productivities and use of antibiotics during production undermine their economic viability and safety. We have developed an industrially relevant, scalable, fed-batch process for the high level production of a novel SELP in E. coli in which the commonly used antibiotic selection marker of the expression vector is exchanged for a post segregational suicide system, the separate-component-stabilisation system (SCS). SCS significantly augments SELP productivity but also enhances the product safety profile and reduces process costs by eliminating the use of antibiotics. Plasmid content increased following induction but no significant differences in plasmid levels were discerned when using SCS or the antibiotic selection markers under the controlled fed-batch conditions employed. It is suggested that the absence of competing plasmid-free cells improves host cell viability and enables increased productivity with SCS. With the process developed, 12.8 g L(-1) purified SELP was obtained, this is the highest SELP productivity reported to date and clearly demonstrates the commercial viability of these promising polymers.This work was financed by the European Commission via the 7th Framework Programme Project EcoPlast (FP7-NMP-2009-SME-3), by national funds from the FCT through EXPL/BBB-BIO/1772/2013-FCOMP-010124-FEDER-041595, the strategic programme UID/BIA/04050/2013 (POCI-01-0145-FEDER-007569) and a fellowship to SRC (SFRH/BPD/89980/2012), as well as from ERDF through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI). T.C. is supported by the FCT, the European Social Fund, the Programa Operacional Potencial Humano and the Investigador FCT Programme (IF/01635/2014). All the technical staff at the CBMA are thanked for their skilful technical assistance.info:eu-repo/semantics/publishedVersionNature Publishing GroupUniversidade do MinhoBarroca, Mário Jorge FariaRodrigues, PauloSobral, Rómulo SacramentoCosta, Maria Manuela RibeiroChaves, Susana R.Machado, RaulCasal, MargaridaCollins, Tony2016-12-162016-12-16T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/45777engBarroca M., Rodrigues P., Sobral R., Costa M.M.R., Chaves S.R., Machado R., Casal M. and Collins T. Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein. (2016). Scientific Reports, 6, 39329; DOI: 10.1038/srep39329.2045-232210.1038/srep3932927982135https://www.nature.com/articles/srep39329info: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:RCAAP2023-07-21T11:56:36Zoai:repositorium.sdum.uminho.pt:1822/45777Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:46:13.780718Repositório 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 |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
title |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
spellingShingle |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein Barroca, Mário Jorge Faria Ciências Naturais::Ciências Biológicas Science & Technology |
title_short |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
title_full |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
title_fullStr |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
title_full_unstemmed |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
title_sort |
Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein |
author |
Barroca, Mário Jorge Faria |
author_facet |
Barroca, Mário Jorge Faria Rodrigues, Paulo Sobral, Rómulo Sacramento Costa, Maria Manuela Ribeiro Chaves, Susana R. Machado, Raul Casal, Margarida Collins, Tony |
author_role |
author |
author2 |
Rodrigues, Paulo Sobral, Rómulo Sacramento Costa, Maria Manuela Ribeiro Chaves, Susana R. Machado, Raul Casal, Margarida Collins, Tony |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Barroca, Mário Jorge Faria Rodrigues, Paulo Sobral, Rómulo Sacramento Costa, Maria Manuela Ribeiro Chaves, Susana R. Machado, Raul Casal, Margarida Collins, Tony |
dc.subject.por.fl_str_mv |
Ciências Naturais::Ciências Biológicas Science & Technology |
topic |
Ciências Naturais::Ciências Biológicas Science & Technology |
description |
Silk-elastin-like proteins (SELPs) are a family of genetically engineered recombinant protein polymers exhibiting mechanical and biological properties suited for a wide range of applications in the biomedicine and materials fields. They are being explored as the next generation of biomaterials but low productivities and use of antibiotics during production undermine their economic viability and safety. We have developed an industrially relevant, scalable, fed-batch process for the high level production of a novel SELP in E. coli in which the commonly used antibiotic selection marker of the expression vector is exchanged for a post segregational suicide system, the separate-component-stabilisation system (SCS). SCS significantly augments SELP productivity but also enhances the product safety profile and reduces process costs by eliminating the use of antibiotics. Plasmid content increased following induction but no significant differences in plasmid levels were discerned when using SCS or the antibiotic selection markers under the controlled fed-batch conditions employed. It is suggested that the absence of competing plasmid-free cells improves host cell viability and enables increased productivity with SCS. With the process developed, 12.8 g L(-1) purified SELP was obtained, this is the highest SELP productivity reported to date and clearly demonstrates the commercial viability of these promising polymers. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-16 2016-12-16T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/45777 |
url |
http://hdl.handle.net/1822/45777 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Barroca M., Rodrigues P., Sobral R., Costa M.M.R., Chaves S.R., Machado R., Casal M. and Collins T. Antibiotic free selection for the high level biosynthesis of a silk-elastin-like protein. (2016). Scientific Reports, 6, 39329; DOI: 10.1038/srep39329. 2045-2322 10.1038/srep39329 27982135 https://www.nature.com/articles/srep39329 |
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 |
Nature Publishing Group |
publisher.none.fl_str_mv |
Nature Publishing Group |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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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 |
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1799132217591463936 |