Roadmap to Success in AAV Purification. In-Process Control, High Throughput & Novel Column Modalities as Necessary Means for Control Over Scalable AAV Process

Rok Žigon, Mojca Tajnik Sbaizero, Ivana Petrović Koshmak, Veronika Fujs, Maja Leskovec & Aleš Štrancar

Cell & Gene Therapy Insights 2022; 8(10), 1315–1328

Manufacture and purification of recombinant adeno-associated viruses (rAAV) require development and optimization of processes to ensure the best possible quality of the final rAAV product. To do so, different strategies in upstream can be used to achieve the highest possible viral titer and lowest amount of impurities, both of which further influence downstream. Second challenge involves removal of cell debris where different pre-treatments can be utilized. In the next step, optimized capture of rAAV on a cation-exchange chromatography should be developed to remove impurities and achieve a high recovery of rAAV. In the end, several chromatographic options are available to remove empty and defected capsids, so only functional viruses can be isolated. Here, the process of manufacturing and purification of rAAV has been designed using monolithic columns to achieve this important goal of preparing rAAV for the use in gene therapy.

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