Publications · April 26, 2018

Quality and cost assessment of a recombinant antibody fragment produced from mammalian, yeast and prokaryotic host cells: A case study prior to pharmaceutical development

Quality and cost assessment of a recombinant antibody fragment produced from mammalian, yeast and prokaryotic host cells: A case study prior to pharmaceutical development

In New Biotechnology, 2018

Authors

Kristell Lebozec, Martine Jandrot-Perrus, Gilles Avenard, Olivier Favre-Bulle, and Philippe Billiald.

Abstract

Monoclonal antibody fragments (Fab) are a promising class of therapeutic agents. Fabs are aglycosylated proteins and so many expression platforms have been developed including prokaryotic, yeast and mam- malian cells. However, these platforms are not equivalent in terms of cell line development and culture time, product quality and possibly cost of production that greatly influence the success of a drug candidate’s phar- maceutical development. This study is an assessment of the humanized Fab fragment ACT017 produced from two microorganisms (Escherichia coli and Pichia pastoris) and one mammalian cell host (CHO). Fol- lowing low scale production and Protein L-affinity purification under generic conditions, physico-chemical and functional quality assessments were carried out prior to economic analysis of industrial scale production using a specialized software (Biosolve, Biopharm Services, UK). Results show higher titer production when using E. coli but associated with high heterogeneity of the protein content recovered in the supernatant. We also observed glycoforms of the Fab produced from P. pastoris, while Fab secreted from CHO was the most homogeneous despite a much longer culture time and slightly higher estimated cost of goods. This study may help inform future pharmaceutical development of this class of therapeutic proteins.

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