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Enhancing the Production of Fc Fusion Protein in Fed‐Batch Fermentation of Pichia pastoris by Design of Experiments
Author(s) -
Lin Henry,
Kim Tina,
Xiong Fei,
Yang Xiaoming
Publication year - 2008
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1021/bp0603199
Subject(s) - pichia pastoris , fermentation , fusion protein , glycerol , fusion , chemistry , food science , titer , biochemistry , biology , recombinant dna , linguistics , philosophy , antibody , immunology , gene
Abstract This study focuses on the feasibility of producing a therapeutic Fc fusion protein in Pichia pastoris ( P. pastoris ) and presents an optimization design of experiment (DOE) strategy in a well‐defined experimental space. The parameters examined in this study include pH, temperature, salt supplementation, and batch glycerol concentration. The effects of these process conditions were captured by statistical analysis focusing on growth rate and titer responses. Batch medium and fermentation conditions were also investigated prior to the DOE study in order to provide a favorable condition to enable the production of this Fc fusion protein. The results showed that approximately 373 mg/L of the Fc fusion protein could be produced. The pH was found to be particularly critical for the production of this Fc fusion protein. It was significantly higher than the conventional, recommended pH for P. pastoris fermentation. The development of this process shows that protein production in P. pastoris is protein specific, and there is not a set of pre‐defined conditions that can work well for all types of proteins. Thorough process development would need to be performed for every type of protein in order for large‐scale production in P. pastoris to be feasible.