title: A cell-detaching reactor for inoculation of anchorage-dependent CHO and Vero cells between stepwise-expanded bioreactors.
abstract: A cell-detaching reactor was developed to collect cells growing on microcarriers for inoculation between stepwise-expanded bioreactors. It consisted of a trypsinization zone and a separation zone, which were separated by a 200-mesh stainless steel screen. The screen allowed the cells only to pass through to the next bioreactor, after the cells have been trypsinized and detached from microcarriers. The operating feasibility of the cell-detaching reactor was tested with anchorage-dependent recombinant Chinese hamster ovary (rCHO) and African green monkey kidney (Vero) cells. rCHO and Vero cells were first cultured in a small microcarrier bioreactor, and then inoculated via the cell-detaching reactor into either a packed-bed bioreactor (for rCHO cells) or a larger microcarrier bioreactor (for Vero cells). For rCHO cells, the cell density reached 1.3 x 10(7) cells/ml in the perfusion culture, and Vero cells reached 1.3 x 10(6) cells/ml in the batch culture.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
authors.forename: Xiangming
authors.initials: X
authors.lastname: Sun
authors.forename: Yuanxing
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000818:Animals; D019149:Bioreactors; D016466:CHO Cells; D002448:Cell Adhesion; D049109:Cell Proliferation; D002522:Chlorocebus aethiops; D006224:Cricetinae; D003412:Cricetulus; D005947:Glucose / Q000378:metabolism; D006801:Humans; D014709:Vero Cells
chemical_list: D005947:Glucose