Method for the production and purification of adenoviral vectors
AssigneeIntrogen Therapeutics, Inc.
InventorsShuyuan Zhang, Capucine Thwin, Zheng Wu, Toohyon Cho, Shawn Gallagher
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AssigneeIntrogen Therapeutics, Inc.
InventorsShuyuan Zhang, Capucine Thwin, Zheng Wu, Toohyon Cho, Shawn Gallagher
Estimating the term…
The present invention addresses the need to improve the yields of viral vectors when grown in cell culture systems. In particular, it has been demonstrated that for adenovirus, the use of low-medium perfusion rates in an attached cell culture system provides for improved yields. In other embodiments, the inventors have shown that there is improved Ad-p53 production cells grown in serum-free conditions, and in particular in serum-free suspension culture. Also important to the increase of yields is the use of detergent lysis. Combination of these aspects of the invention permits purification of virus by a single chromatography step that results in purified virus of the same quality as preparations from double CsCl banding using an ultracentrifuge.
A recombinant adenovirus composition comprising between 5×1014 and 1×1018 viral particles and having less than 50 ng of BSA per 1×1012 viral particles.
A purified recombinant adenovirus composition comprising between 5×1014 and 1×1018 adenoviral particles and between about 100 pg and 10 ng of contaminating human DNA per 1×1012 viral particles.
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