Transcriptional Regulation of the VP16 Gene of Herpes Simplex Virus Type 1

Hyun Jin Kwun, Hong Ki Jun, Tae Ho Lee, Kyung Lib Jang

Research output: Contribution to journalArticle

Abstract

The promoter of the HSV-1 VP16 gene contains binding sites for the cellular transcription factors such as USF, CTF, and Sp1, each of which affects basal level expression of the VP16 gene. Transcription of the VP16 gene was induced by viral immediate-early proteins, ICP0 and ICP4, in a synergistic manner but repressed by ICP22. To gain further insight into the role of ICP0 in the expression of the VP16 gene during virus infection, several mutants with deletions in each of their transcriptional regulatory elements were generated. According to transient gene expression assays of these mutants using the CAT gene as a reporter, the USF and CTF binding sites were necessary for efficient induction of the promoter in the presence of transfected ICP0 or during virus infection, whereas the Sp1 binding site had little effect on ICP0-mediated VP16 expression. These results indicate that the immediate early proteins of HSV-1 regulate expression of the VP16 gene during virus infection by modulating the activities of cellular transcription factors such as USF and CTF.

Original languageEnglish (US)
Pages (from-to)456-460
Number of pages5
JournalJournal of Biochemistry and Molecular Biology
Volume32
Issue number5
StatePublished - Sep 30 1999

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

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