Summary
Mouse human-human heterohybridomas secreting human monoclonal antibodies (MoAb) against tetanus toxoid and hepatitis B virus surface antigen were effectively cultivated in a medium containing a serum substitute called GFS, a 55% to 70% ammonium sulphate fraction of serum from adult cattle. A perfusion culture system using a jar fermentor equipped with a cell sedimentation column with a double jacket was developed and applied to produce human MoAb. In this fermentor, maximum cell density of a heterohybridoma reached 1.2×107 cells/ml and MoAb was continuously accumulated at a constant rate for at least 40 days; this led to the production of more than one gram of human MoAb using a culture vessel with a 1-1 working volume.
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Kitano, K., Shintani, Y., Ichimori, Y. et al. Production of human monoclonal antibodies by heterohybridomas. Appl Microbiol Biotechnol 24, 282–286 (1986). https://doi.org/10.1007/BF00257050
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DOI: https://doi.org/10.1007/BF00257050