Improving the cost effectiveness of enhanced green fluorescent protein production using recombinant Escherichia coli BL21 (DE3): Decreasing the expression inducer concentration
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Data
2019-04-08
Autores
dos Santos, Nathalia Vieira [UNESP]
Pereira, Jorge Fernando Brandão [UNESP]
Pedrolli, Danielle Biscaro [UNESP]
Santos-Ebinuma, Valéria De Carvalho [UNESP]
Valentini, Sandro Roberto [UNESP]
Lopes, Camila [UNESP]
Dupont, Jana [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Wiley
Resumo
Green Fluorescent Protein (GFP) is a globular protein used as biosensor and biomarker in medical and industrial fields. However, due to the expensive production costs of expressing proteins using high-cost inducers like isopropyl-β-D-1-thiogalactopyranoside (IPTG), the number of GFP applications are still scarce. This work studied the production of Enhanced GFP (EGFP) using Escherichia coli BL21 (DE3) [pLysS; pET28(a)], aiming to increase its yield and reduce costs. Firstly, the influence of agitation rate, induction time and concentration of IPTG in the production of EGFP were evaluated, but only the first two parameters were significant. Subsequently, aiming to reduce costs related to the use of inducer, the IPTG concentration (0.005, 0.010 and 0.025 mM) was decreased and, interestingly, the production levels were maintained or increased. These results show that a proper choice of production conditions, particularly through the decrease of inducer concentration, is effective to reduce the upstream production costs and guarantee high EGFP expression.
Descrição
Palavras-chave
biomarker, production, Escherichia coli, green fluorescent protein, protein expression inducer, IPTG
Como citar
Lopes, C., dos Santos, N.V., Dupont, J., Pedrolli, D.B., Valentini, S.R., de Carvalho Santos‐Ebinuma, V. and Pereira, J.F.B. (2019), Improving the cost effectiveness of enhanced green fluorescent protein production using recombinant Escherichia coli BL21 (DE3): Decreasing the expression inducer concentration. Biotechnology and Applied Biochemistry, 66: 527-536. DOI:10.1002/bab.1749, which has been published in final form at https://doi.org/10.1002/bab.1749