Weigel T, Soliman R, Wolff MW, Reichl U. Hydrophobic-interaction chromatography for purification of influenza A and B virus. J Chromatogr B Analyt Technol Biomed Life Sci. 201
Options for hydrophobic-interaction chromatography (HIC) for purification of cell culture-derived influenza A and B virus have been assessed using a 96-well plate format using a semi-high-throughput approach. Follow-up experiments at preparative scale were used to characterize dynamic binding capacity, viral hemagglutinin protein (HA protein) recovery, and the influence of influenza virus (IV) strains on yield and contamination levels. Virus recoveries of up to 96% with a residual DNA level of about 1.3% were achieved. To achieve DNA contamination levels required for manufacturing of influenza vaccines for human use, a purification train comprising clarification, inactivation, concentration, column-based anion-exchange chromatography (AEC), and HIC was used in a final set-up. AEC using strong quaternary ammonium ligands was applied as an orthogonal method for DNA depletion by adsorption. Subsequently, HIC (with polypropylene glycol as functional group) was used to reversibly bind virus particles for capture and to remove residual contaminating DNA and proteins (flow-through). This two-step chromatographic process, which requires neither a buffer exchange step nor nuclease treatment had a total virus particle yield for IV A/PR/8/34 (H1N1) of 92%. The protein and the DNA contamination level could be reduced to 42% and at least 1.0%, respectively. With 17.2?μg total protein and 2.0?ng DNA per monovalent dose, this purity level complies with the limits of the European Pharmacopeia for cell culture-derived human vaccines. Overall, the presented downstream process represents a valuable alternative to existing virus purification schemes. Furthermore, it utilizes only off-the-shelf materials and is a simple as well as an economic process for production of cell culture-derived viruses and viral vectors.
See Also:
Latest articles in those days:
- Host restriction factor SAMHD1 does not restrict seasonal influenza virus replication in human epithelial or macrophage-like cells 16 hours ago
- Enhancing the stability of Influenza A reporter viruses by recoding the gfp gene 16 hours ago
- T cell help is a limiting factor for rare anti-influenza memory B cells to reenter germinal centers and generate potent broadly neutralizing antibodies 3 days ago
- Wild birds drive the introduction, maintenance, and spread of H5N1 clade 2.3.4.4b high pathogenicity avian influenza viruses in Spain, 2021-2022 3 days ago
- [preprint]FluNexus: a versatile web platform for antigenic prediction and visualization of influenza A viruses 3 days ago
[Go Top] [Close Window]


