Cited by 31Protein purification and stabilityBacterial Genetics and BiotechnologyMonoclonal and Polyclonal Antibodies Research

Use of a design of experiments approach to optimise production of a recombinant antibody fragment in the periplasm of Escherichia coli: Selection of signal peptide and optimal growth conditions

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Kasli, Ikhlaas M., Thomas, Owen R. T., Overton, Tim W.·2019·AMB Express

Abstract

Production of recombinant proteins such as antibody fragments in the periplasm of the bacterium Escherichia coli has a number of advantages, including the ability to form disulphide bonds, aiding correct folding, and the relative ease of release and subsequent capture and purification. In this study, we employed two N-terminal signal peptides, PelB and DsbA, to direct a recombinant scFv antibody (single-chain variable fragment), 13R4, to the periplasm via the Sec and SRP pathways respectively. A design of experiments (DoE) approach was used to optimise process conditions (temperature, inducer concentration and induction point) influencing bacterial physiology and the productivity, solubility and location of scFv. The DoE study indicated that titre and subcellular location of the scFv depend on the temperature and inducer concentration employed, and also revealed the superiority of the PelB signal peptide over the DsbA signal peptide in terms of scFv solubility and cell physiology. Baffled shake flasks were subsequently used to optimise scFv production at higher biomass concentrations. Conditions that minimised stress (low temperature) were shown to be beneficial to production of periplasmic scFv. This study highlights the importance of signal peptide selection and process optimisation for the production of scFv antibodies, and demonstrates the utility of DoE for selection of optimal process parameters.

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Cited by

Sorted by citations

Authors
Kasli, I. M., Thomas, O. R. T., & Overton, T. W.
Affiliations
University of Birmingham (GB)
Corresponding author
Overton, Tim W.
Venue
AMB Express
Published
2019-01-07
Volume
9
Issue
1
Pages
5-5
ISSN
2191-0855 (ISSN-L)
OpenAlex
W2917769110
Cited by
31
References
1
Citations by year
2026: 4 · 2025: 5 · 2024: 5 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 5 · 2019: 3
FWCI
1.24
Type
journal article
Language
en
Open access
Locations
  • AMB Express (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, cc-by)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, other-oa)
Funders
Biotechnology and Biological Sciences Research Council (PhD studentship)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein purification and stability
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
Keywords
recombinant antibody fragments, scFv, Escherichia coli, DsbA, Sec pathway, process optimization, temperature, inducer concentration, protein solubility, disulfide bond formation

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