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Simulation for the recovery of plasmid for a DNA vaccine

M. Limonta, N. Lendero Krajnc, U. Vidic, L. Zumalacárregui

Biochemical Engineering Journal 80 (2013) 14-18

The pIDKE2 plasmid is the main component of the CIGB's candidate vaccine against Hepatitis C virus (HVC), which is being used in HCV chronically-infected individuals during clinical trials phase 1 and 2. The designed downstream process of pIDKE2 plasmid produces up to 179 g/year. In order to conduct further improvements, modelling of the downstream process was performed. A methodology based on process analysis tools, such as experimental design and modelling was established to identify factors with the highest influence on production cost and the amount of annual plasmid. Taking into account that the pIDKE2 downstream process designed is in its initial stages of development, CIM technology was evaluated as a new manufacturing process on lab scale. Purity and recovery of CIM technology was better than porous particle matrix, thus SuperPro Designer was used in order to simulate the purification process. Cost efficiency optimization of the pIDKE2 downstream process was done with the simulation model.

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