title: Production of recombinant HIV-1 nef protein using different expression host systems: a techno-economical comparison.
abstract: Three popular expression host systems Escherichia coli, Pichia pastoris and Drosophila S2 were analyzed techno-economically using HIV-1 Nef protein as the model product. On scale of 100 mg protein, the labor costs corresponded to 52-83% of the manufacturing costs. When analyzing the cost impact of the different phases (strain/cell line construction, bioreactor production, and primary purification), we found that with the microbial host systems the strain construction phase was most significant generating 56% (E. coli) and 72% (P. pastoris) of the manufacturing costs, whereas with the Drosophila S2 system the cell line construction and bioreactor production phases were equally significant (46 and 47% of the total costs, respectively). With different titers and production goal of 100 mg of Nef protein, the costs of P. pastoris and Drosophila S2 systems were about two and four times higher than the respective costs of the E. coli system. When equal titers and bioreactor working volumes (10 L) were assumed for all three systems, the manufacturing costs of the bioreactor production of the P. pastoris and Drosophila S2 systems were about two and 2.5 times higher than the respective costs of the E. coli system.
authors.affiliation: Faculty of Chemistry and Materials Sciences, Dept. of Biotechnology and Chemical Technology, Helsinki University of Technology, FI-02015 TKK, Finland. raisa.vermasvuori@tkk.fi
authors.forename: Raisa
authors.initials: R
authors.lastname: Vermasvuori
authors.forename: Jani
authors.initials: J
authors.lastname: Koskinen
authors.forename: Katri
authors.initials: K
authors.lastname: Salonen
authors.forename: Noora
authors.initials: N
authors.lastname: Sirén
authors.forename: Jan
authors.initials: J
authors.lastname: Weegar
authors.forename: John
authors.initials: J
authors.lastname: Dahlbacka
authors.forename: Nisse
authors.initials: N
authors.lastname: Kalkkinen
authors.forename: Niklas
authors.initials: N
authors.lastname: von Weymarn
mesh_terms: D000818:Animals; D002460:Cell Line; D004330:Drosophila; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D010843:Pichia / Q000235:genetics / Q000378:metabolism; D015202:Protein Engineering / Q000191:economics* / Q000379:methods*; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism*; D054311:nef Gene Products, Human Immunodeficiency Virus / Q000235:genetics / Q000378:metabolism*
chemical_list: D011994:Recombinant Proteins; D054311:nef Gene Products, Human Immunodeficiency Virus; C514837:nef protein, Human immunodeficiency virus 1