Production cell line enhancers
US10611831B2 · kind B2 · utility
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10References
40Claims
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Assignee
Inventors
Key dates
| Filing date | May 21, 2019 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | May 21, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2015/8518
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention relates to discovery of the ectopic expression of EDEM2 in a production cell to improve the yield of a useful multi-subunit protein. Thus, the present invention provides for production cell lines, such as the canonical mammalian biopharmaceutical production cell, the CHO cell, containing recombinant polynucleotides encoding EDEM2. Also disclosed is a production cell containing both an EDEM2-encoding polynucleotide as well an XBP1-encoding polynucleotide. Improved titers of antibodies produced by these cell lines are disclosed, as well as the improved cell densities attained by these cells in culture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.