title: mRNA stability and antibody production in CHO cells: improvement through gene optimization.
abstract: The productivity of stably transfected cell lines is of critical importance for the manufacturing of therapeutic proteins. Various methods have been successfully implemented to increase the production output of mammalian cell cultures. Increasing evidence suggests that optimization of the gene coding sequences of an expression vector can improve specific cell line yield of the recombinant protein. Here we demonstrate that gene optimization substantially enhances antibody production in Chinese hamster ovary cells. When gene optimization was applied to the heavy and light chain genes of a therapeutic antibody, we observed increased antibody production in transient transfection. Elevated heavy chain mRNA level was associated with the increase of antibody production. Further analysis suggested that the increased antibody expression is attributable to enhanced mRNA stability resulting from gene optimization. Gene optimization also led to increased antibody production in stable clones.
authors.affiliation: Schering-Plough Research Institute, Biological and Sterile Products Development, Union, NJ 07083, USA.
authors.forename: Finn
authors.initials: F
authors.lastname: Hung
authors.forename: Liang
authors.initials: L
authors.lastname: Deng
authors.forename: Paula
authors.initials: P
authors.lastname: Ravnikar
authors.forename: Russ
authors.initials: R
authors.lastname: Condon
authors.forename: Benson
authors.initials: B
authors.lastname: Li
authors.forename: Lien
authors.initials: L
authors.lastname: Do
authors.forename: Deba
authors.initials: D
authors.lastname: Saha
authors.forename: Yung-Shyeng
authors.initials: YS
authors.lastname: Tsao
authors.forename: Ankit
authors.initials: A
authors.lastname: Merchant
authors.forename: Zhong
authors.initials: Z
authors.lastname: Liu
authors.forename: Shuangping
authors.initials: S
authors.lastname: Shi
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000235:genetics / Q000378:metabolism*; D016466:CHO Cells / Q000502:physiology*; D006224:Cricetinae; D003412:Cricetulus; D024861:Genetic Enhancement / Q000379:methods*; D015202:Protein Engineering / Q000379:methods*; D020871:RNA Stability / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics*
chemical_list: D000911:Antibodies, Monoclonal; D012333:RNA, Messenger