title: Production of recombinant proteins in mammalian cells.
abstract: The best strategy for consistent production of larger quantities of pure protein is stable expression. Popular hosts for stable expression are Chinese hamster ovary (CHO) cells, baby hamster kidney (BHK-21) cells, myeloma cells, and the transformed kidney cell line 293. Protocols for stable production in CHO cells are described in this unit. Typical methods for transfection using commercially available plasmid expression vectors are described, along with methods to select for stable expression and methods for amplifying the expression level in the transfected cell. Following this, procedures are presented for efficient cell growth to obtain significant amounts of protein product. Support protocols describe freezing of cells, determination of growth rates, determination of specific productivity of cells, preparing samples for assay, and setting up a 10-day shaker-flask growth curve.
authors.affiliation: Chiron Corporation, Emeryville, California, USA.
authors.forename: S
authors.initials: S
authors.lastname: Chen
authors.forename: D
authors.initials: D
authors.lastname: Gray
authors.forename: J
authors.initials: J
authors.lastname: Ma
authors.forename: S
authors.initials: S
authors.lastname: Subramanian
mesh_terms: D000818:Animals; D016466:CHO Cells; D006224:Cricetinae; D003412:Cricetulus; D005822:Genetic Vectors / Q000235:genetics; D006801:Humans; D011994:Recombinant Proteins / Q000235:genetics* / Q000378:metabolism*; D014162:Transfection / Q000379:methods
chemical_list: D011994:Recombinant Proteins