Recombinant adeno-associated virus particle purification comprising an affinity purification step
US11021689B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Feb 9, 2016 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Apr 19, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2750/14151
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention describes a method for obtaining purified recombinant Adeno-Associated Virus particles (rAAV), comprising the steps of: a) performing a depth filtration of a starting material previously obtained from cells producing rAAV particles, the said starting material being selected in a group comprising a cell lysate and a culture supernatant, whereby a rAAV-containing clarified composition is provided; b) submitting the rAAV-containing clarified composition to an affinity purification step, whereby a first rAAV enriched composition is provided; c) submitting the first rAAV enriched composition at least once to: c1) a step of anion-exchange chromatography on a chromatographic support wherein elution is performed by using a salt gradient, preferably a linear salt gradient, and wherein the rAAV-containing fraction is collected, whereby a second rAAV enriched composition is provided; or c2) a step of density gradient centrifugation, wherein the rAAV-containing fraction is collected, whereby a second rAAV enriched composition is provided; d) submitting the second rAAV enriched composition to a step of tangential flow filtration, whereby purified recombinant Adeno-Associated Virus…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.