Biotechnology Bulletin ›› 2019, Vol. 35 ›› Issue (3): 217-224.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0782

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Optimization of Glycosylation Distribution in the Production of Monoclonal Antibody Bio-Medicine by Full Factorial Design

ZHANG Lei1,2, YANG Mu-di2, DONG Shun2, LIU Ming-qiu1   

  1. 1. School of Life Sciences,Fudan University,Shanghai 200438;
    2. Mab-Venture Biopharm Co.,Ltd,Shanghai 201318
  • Received:2018-09-09 Online:2019-03-26 Published:2019-04-03

Abstract: This work aims to regulate the glycosylation distribution of monoclonal antibody bio-medicine,and thus which allows them to be in accord with original medicine. Full factorial design was applied to investigate the effects of 4 additives of galactose,uridine,manganese chloride and hydrolysate on the glycosylation of monoclonal antibody(mAb). The results revealed that combined supplements of galactose,uridine and manganese chloride increased galactosylation of mAb;moreover,there was no significant impact on cell growth and antibody production. Furthermore,uridine and manganese chloride inhibited Man5 formation while excessive uridine led to a high Man5 level. Besides,protolysate not only decreased Man5 level and increased fucosylation,also enhanced cell growth. In summary,a desired target glycosylation profile was achieved after the validation was conducted through bioreactor cultivation under the optimized condition predicted by a model,thus production strategy of regulating the glycosylation of mAb during CHO cell culture process is successfully established.

Key words: CHO, monoclonal antibody, galactosylation, fucosylation, Man5, full factorial design