La. Palomares et al., Cell size as a tool to predict the production of recombinant protein by the insect-cell baculovirus expression system, BIOTECH LET, 23(5), 2001, pp. 359-364
The increase of Sf9 cell diameter after infection with a recombinant baculo
virus encoding VP8 protein of rotavirus can be used to predict culture prod
uctivity. A direct proportional correlation between the increase in cell si
ze and VP8 concentration was obtained when manipulating selected medium com
ponents. Only yeast extract increased (38%) VP8 concentration, while fetal
bovine serum increased (55%) the maximum cell concentration. An inexpensive
and simplified culture media can thus be designed without detriment to pro
tein yields.