Hydrodynamic Effects on Biofilm Development and Recombinant Protein Expression

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Soares, A (Autor) Outra; Luciana Gomes (Autor) FEUP; Monteiro, GA (Autor) Outra; Filipe Mergulhão (Autor) FEUP

Revista

Título: Microorganisms

Vol. 10

Página Final: 931

Editora: MDPI

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Projetos Associados

ALiCE - ALiCE - Laboratório Associado em Engenharia Química

LEPABE - Financiamento Plurianual 2020-2023 da Unidade de I&D LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

FilmProt - Utilização de biofilmes de Escherichia coli para a produção de proteínas recombinantes e outros compostos de elevado valor acrescentado

Outras Informações

ID Authenticus: P-00W-FPV

DOI: 10.3390/microorganisms10050931

Abstract (EN): Hydrodynamics play an important role in the rate of cell attachment and nutrient and oxygen transfer, which can affect biofilm development and the level of recombinant protein production. In the present study, the effects of different flow conditions on the development of Escherichia coli biofilms and the expression of a model recombinant protein (enhanced green fluorescent protein, eGFP) were examined. Planktonic and biofilm cells were grown at two different flow rates in a recirculating flow cell system for 7 days: 255 and 128 L h(-1) (corresponding to a Reynolds number of 4600 and 2300, respectively). The fluorometric analysis showed that the specific eGFP production was higher in biofilms than in planktonic cells under both hydrodynamic conditions (3-fold higher for 255 L h(-1) and 2-fold higher for 128 L h(-1)). In the biofilm cells, the percentage of eGFP-expressing cells was on average 52% higher at a flow rate of 255 L h(-1). Furthermore, a higher plasmid copy number (PCN) was obtained for the highest flow rate for both planktonic (244 PCN/cell versus 118 PCN/cell) and biofilm cells (43 PCN/cell versus 29 PCN/cell). The results suggested that higher flow velocities promoted eGFP expression in E. coli biofilms.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10