PCV2 immunogenic compositions and methods of producing such compositions
US7700285B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Nov 18, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2750/10034
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved method for recovering the protein expressed by open reading frame 2 from porcine circovirus type 2 is provided. The method generally involves the steps of transfecting recombinant virus containing open reading frame 2 coding sequences into cells contained in growth media, causing the virus to express open reading frame 2, and recovering the expressed protein in the supernate. This recovery should take place beginning approximately 5 days after infection of the cells in order to permit sufficient quantities of recombinant protein to be expressed and secreted from the cell into the growth media. Such methods avoid costly and time consuming extraction procedures required to separate and recover the recombinant protein from within the cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.