Article
Limitations to the Development of Humanized Antibody Producing Chinese Hamster Ovary Cells Using Glutamine Synthetase-Mediated Gene Amplification
2 Jun 2006
Abstract excerpt
Recombinant Chinese hamster ovary (CHO) cells expressing a humanized antibody were obtained by transfection of an antibody expression vector (pKC-GS-HC-huS) into CHO-K1 cells and subsequent glutamine synthetase (GS)-mediated gene amplification in media containing different concentrations of methionine sulfoximine (MSX). Concentrations consisted of 25, 200, 500, and 1000 microM of MSX. The highest producer (HP)...
