High viable cell concentration fed‐batch cultures of hybridoma cells through on‐line nutrient feeding

Weichang Zhou, Jutta Rehm, Wei‐Shou ‐S Hu

Research output: Contribution to journalArticlepeer-review

132 Scopus citations

Abstract

A hybridoma cell line was cultivated in fed‐batch cultures using a low‐protein, serum‐free medium. On‐line oxygen uptake rate (OUR) measurement was used to adjust the nutrient feeding rate based on glucose consumption, which was estimated on‐line using the stoichiometric relations between glucose and oxygen consumption. Through on‐line control of the nutrient feeding rate, not only sufficients were supplied for cell growth and antibody production, but also the concentrations of glucose and other important nutrients such as amino acids were maintained at low levels during the cell growth phase. During the cultivation, cell metabolism changed from high lactate production and low oxygen consumption to low lactate production and high oxygen consumption. As a result the accumulation of lactate was reduced and the growth phase was extended. In comparison with the batch cultures, in which cells reached a concentration of approximately 2 × 106 cells/mL, a very high concentration of 1.36 × 107 cells/mL with a high cell viability (>90%) was achieved in the fed‐batch culture. By considering the consumption of glucose and amino acids, as well as the production of cell mass, metabolites, and antibodies, a well‐closed material balance was established. Our results demonstrate the value of coupling on‐line OUR measurement and the stoichiometric realations for dynamic nutrient feeding in high cell concentration fed batch cultures. © 1995 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)579-587
Number of pages9
JournalBiotechnology and bioengineering
Volume46
Issue number6
DOIs
StatePublished - Jun 20 1995

Keywords

  • energy metabolism
  • fed‐batch culture
  • hybridoma cells
  • on‐line nutrient feeding
  • process control

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