G. Cachianes et al., EPSTEIN-BARR VIRUS-DERIVED VECTORS FOR TRANSIENT AND STABLE EXPRESSION OF RECOMBINANT PROTEINS, BioTechniques, 15(2), 1993, pp. 255
The transient expression level of foreign proteins in primate cells ca
n be enhanced by incorporating the replication elements derived from E
pstein-Barr virus (EBV). Specifically, we have constructed expression
plasmids with the replication origin region (OriP) from EBV and an ade
novirus-transformed cell line that expresses the EBV nuclear antigens-
1 (EBNA-1). As EBV vectors can replicate as episomes in the nuclei, su
ch vectors can have a stable transfection efficiency as high as 25% an
d provide a straightforward way of obtaining large amounts of recombin
ant proteins transiently or stably.