Phosphatidylserine is involved in gene expression from Sindbis virus subgenomic promoter

Kyoko Saito, Masahiro Nishijima, Osamu Kuge

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Sindbis virus replication is mediated by an RNA replicase translated from viral RNA genome. The replicase synthesizes progeny genomic RNA and shorter RNA (subgenomic RNA) carrying viral structural genes in association with cytoplasmic membranes. Here we examined the involvement of a membrane lipid, phosphatidylserine (PS), in Sindbis virus gene expression using Chinese hamster ovary cell mutants. When the mutant cells were transfected with viral replicon RNA, in which the structural genes downstream of the subgenomic promoter were replaced by a reporter gene, reporter expression was inhibited under PS-deficient conditions. In contrast, reporter expression from an SV40 promoter-driven construct was normal under similar conditions. Furthermore, expression of a viral replicase protein from the genomic RNA and accumulation of the subgenomic RNA were not inhibited by PS deficiency. These findings indicate that reduced cellular PS level impairs a posttranscriptional event of Sindbis virus subgenomic promoter-driven gene expression.

Original languageEnglish
Pages (from-to)878-885
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume345
Issue number2
DOIs
Publication statusPublished - Jun 30 2006

Fingerprint

Sindbis Virus
Phosphatidylserines
Viruses
Gene expression
RNA
Gene Expression
Viral RNA
Genes
RNA Replicase
Replicon
Viral Genes
Viral Genome
Viral Proteins
Membrane Lipids
Virus Replication
Cricetulus
Reporter Genes
Ovary
Cell Membrane
Cells

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Phosphatidylserine is involved in gene expression from Sindbis virus subgenomic promoter. / Saito, Kyoko; Nishijima, Masahiro; Kuge, Osamu.

In: Biochemical and Biophysical Research Communications, Vol. 345, No. 2, 30.06.2006, p. 878-885.

Research output: Contribution to journalArticle

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