title: [Metabolic characteristics and kinetic model of recombinant CHO cells in serum-free suspension batch culture].
abstract: By using the cell density, cell viability, Pro-UK activity, specific consumption rate of glucose (q(glc)), specific production rate of lactate (q(lac)), yield of lactate to glucose (Y(lac/glc)) and as the evaluation indexes, the growth and metabolism characteristics of pro-urokinase (Pro-UK) expressing CHO cells in serum-free suspension batch culture were examined and compared to those in serum-containing suspension batch culture. We observed hardly differences in growth and metabolism characteristics between the CHO cell populations grown in serum-free suspension batch culture and serum-containing suspension batch culture. The optimal mathematical model parameters for the CHO cells grown in suspension batch culture were obtained by non-linear programming of data representing the growth, substrate consumption and product formation of the CHO cells during logarithmic growth phase using MATLAB software, and the kinetic model of the cell growth and metabolism in serum-free culture were established.
authors.affiliation: Institute of Biotechnology, Academy of Military Medical Sciences, Beijing, China.
authors.forename: Xingmao
authors.initials: X
authors.lastname: Liu
authors.forename: Hong
authors.initials: H
authors.lastname: Liu
authors.forename: Lingling
authors.initials: L
authors.lastname: Ye
authors.forename: Shichong
authors.initials: S
authors.lastname: Li
authors.forename: Benchuan
authors.initials: B
authors.lastname: Wu
authors.forename: Haitao
authors.initials: H
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Xie
authors.forename: Zhaolie
authors.initials: Z
authors.lastname: Chen
mesh_terms: D000818:Animals; D019149:Bioreactors; D016466:CHO Cells; D006224:Cricetinae; D003412:Cricetulus; D016895:Culture Media, Serum-Free; D046508:Culture Techniques / Q000379:methods*; D007700:Kinetics; D008962:Models, Theoretical; D011994:Recombinant Proteins / Q000096:biosynthesis* / Q000235:genetics / Q000378:metabolism; D014568:Urokinase-Type Plasminogen Activator / Q000096:biosynthesis* / Q000235:genetics / Q000378:metabolism
chemical_list: D016895:Culture Media, Serum-Free; D011994:Recombinant Proteins; D014568:Urokinase-Type Plasminogen Activator; C067551:saruplase