Metabolic studies on vaccinia-virus-infected oligodendrocytes in brain cell cultures

Twelve-day-old cultures of dissociated newborn mouse brain were infected with neurotropic vaccinia virus strain WR. Using the indirect immuno-fluorescence staining technique the total destruction of galactocerebroside (GL) or myelin basic protein (MBP)-positive oligodendrocytes could be detected after 72 h of infection. The activity of the oligodendrocyte-specific enzymes, cerebroside sulfotransferase (CST) and 2'3'-cyclic nucleotide 3'-phosphohydrolase (CNP), was 27% and 17% respectively of the activity in noninfected controls. This reduction was not a result of viral-induced inhibition of host protein synthesis. In cultures treated with puromycin GC- and MBP- positive oligodendrocytes were detectable at a time at which no CST or CNP activity could detected.