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. 1990 Jun;64(6):2537-44.
doi: 10.1128/JVI.64.6.2537-2544.1990.

Susceptibility of human cells to killing by the parvoviruses H-1 and minute virus of mice correlates with viral transcription

J J Cornelis  1 , Y Q Chen, N Spruyt, N Duponchel, S F Cotmore, P Tattersall, J Rommelaere
Affiliations

Susceptibility of human cells to killing by the parvoviruses H-1 and minute virus of mice correlates with viral transcription

J J Cornelis et al. J Virol. 1990 Jun.

Abstract

Human fibroblasts and epithelial cells differing in their susceptibility to killing by the autonomous parvoviruses H-1 and minute virus of mice were compared for their capacity to express viral mRNAs and proteins. The transition from a parvovirus-resistant to a parvovirus-sensitive phenotype correlated with a proportional increase in the production of the three major viral transcripts and of structural and nonstructural proteins. In contrast, cell sensitization to parvovirus could not be correlated with detectable changes in virus uptake, intracellular localization of gene products, stability of viral mRNAs, or phosphorylation of viral nonstructural polypeptides. Moreover, the H-1 virus-sensitive keratinocyte line studied did not sustain a greater level of viral DNA amplification than its resistant derivative. Therefore, the differential susceptibility of the human cells tested to parvovirus infection appears to be mainly controlled at the level of transcription of the viral genome. Parvoviral gene expression could not be elevated by increasing the input multiplicity of infection in either of the cell systems analyzed. Together, these data suggest that a cellular factor(s) regulating parvoviral transcription may be modulated by oncogenic transformation or by differentiation, as both features have been shown to affect cell susceptibility to parvoviruses.

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