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  • Purification of infective b...
    Gerster, Petra; Kopecky, Eva-Maria; Hammerschmidt, Nikolaus; Klausberger, Miriam; Krammer, Florian; Grabherr, Reingard; Mersich, Christa; Urbas, Lidija; Kramberger, Petra; Paril, Tina; Schreiner, Matthias; Nöbauer, Katharina; Razzazi-Fazeli, Ebrahim; Jungbauer, Alois

    Journal of Chromatography A, 05/2013, Volume: 1290
    Journal Article

    •Direct chromatographic processing of virus without pre-concentration.•Protocol for rapid purification of infective virus.•Purification method to yield >90% infective virus.•Phospholipid removal prior anion-exchange chromatography essential for recovery of virus. A chromatographic process based on monoliths for purification of infective baculovirus without prior concentration step has been established. Baculovirus produced in Spodoptera frugiperda cells (Sf-9) were harvested by centrifugation, filtered through 0.8μm filters and directly loaded onto radial 1mL anion exchange monoliths with a channel size of 1.5–2.0μm operated at a volumetric flow rate of one bed volume per minute. Optional an epoxy monolith was used as pre-column to reduce interfering compounds and substances influencing the capacity of anion exchange monoliths for baculovirus infectious virus could be eluted with a step gradient at salt concentrations of 440mM NaCl. Recovery of infectious virus was highly influenced by composition and age of supernatant and ranged from 20 to >99% active baculovirus. Total protein content could be reduced to 1–8% and DNA content to 38–48% in main virus fraction. Infective virus could be 52-fold concentrated within 20.5h and simultaneously an 82-fold volume reduction was possible when loading 1150mL (2.1×108pfu/mL) onto 1mL scale support.