文摘
A process for human influenza H1N1 virus vaccine production from Madin–Darby canine kidney (MDCK) cells using a novel packed-bed bioreactor is described in this report. The mini-bioreactor was used to study the relationship between cell density and glucose consumption rate and to optimize the infection parameters of the influenza H1N1 virus (A/New Caledonia/20/99). The MDCK cell culture and virus infection were then monitored in a disposable perfusion bioreactor (AmProtein Current Perfusion Bioreactor) with proportional–integral–derivative control of pH, dissolved O2 (DO), agitation, and temperature. During 6?days of culture, the total cell number increased from 2.0?×-09 to 3.2?×-010 cells. The maximum virus titers of 768 hemagglutinin units/100?μL and 7.8?×-07 50?% tissue culture infectious doses/mL were obtained 3?days after infection. These results demonstrate that using a disposable perfusion bioreactor for large-scale cultivation of MDCK cells, which allows for the control of DO, pH, and other conditions, is a convenient and stable platform for industrial-scale production of influenza vaccines.