1887

Abstract

SUMMARY

The mechanism for regulating interferon production was investigated in relation to accentuation of production in serum-free human diploid cells (strain WI-38) treated with , -dibutyryl guanosine 3′, 5′-cyclic monophosphate (db-cyclic GMP).

Interferon production in serum-free WI-38 cell cultures in response to Newcastle disease virus (NDV) was greatly reduced. In these cells, there was decreased incorporation of 5-H-uridine into the acid-insoluble fraction, but unimpaired incorporation of U-C--leucine, as compared with serum-containing cultures. When serum-free cell cultures were treated with 0.2 m-db-cyclic GMP, incorporation of both 5-H-uridine and U-C--leucine was increased and there was an 8-fold enhancement in the yield of interferon in response to NDV. Induction of db-cyclic GMP-treated cells by NDV in the presence of cycloheximide and actinomycin D suggests that db-cyclic GMP enhances transcription of the interferon gene, and thereby augments interferon production.

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/content/journal/jgv/10.1099/0022-1317-39-2-303
1978-05-01
2022-01-22
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