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US 2012/0237976 A1Published application
Mammalian expression vectors and uses thereof
AssigneeAbbott Laboratories
InventorChung-ming HSIEH
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Abstract
The present invention features nucleic acids for recombinant protein expression in mammalian cell culture. The episomal vectors of the invention promote high protein production in mammalian cells expressing the SV40 T Ag or Epstein-Barr virus nuclear antigen (e.g., COS7 or HEK293-6E cells). The methods and systems are useful, for example, in pharmaceutical drug development and cloning, especially for the production of antibodies.
Claims33
An expression vector comprising:
- (a) an OriP origin of replication derived from Epstein-Barr virus (EBV);
- (b) an SV40 origin of replication;
- (c) an insertion site for inserting a gene of interest;
- (d) a promoter operably linked to the insertion site, wherein the promoter is a cytomegalovirus (CMV) promoter;
- and, optionally,
- (e) a nucleic acid sequence encoding an antibody heavy or light chain constant region, operably linked to the insertion site.
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Dependencies are inferred from the claim text.