Interferon regulatory factor 1 promoter polymorphism and response to type 1 interferon

Hidetsugu Saito, Shinichiro Tada, Hirotoshi Ebinuma, Kanji Wakabayashi, Tamako Takagi, Yoshimasa Saito, Nobuhiro Nakamoto, Satoshi Kurita, Hiromasa Ishii

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The clinical success of interferon-treatment has been found to vary in different individuals. To explain this, we hypothesized that responses to type 1 interferons could be partly determined by interferon regulatory factor-1 gene transcription, because the latter is an important transcription factor in the interferon system. We demonstrated that the antiproliferative effect of type 1 interferons on human liver cancer cells correlates with levels of transcription of the interferon regulatory factor-1 gene in parallel with those of p21WAF-1expression. Here, we investigated whether mutations in the interferon regulatory factor-1 gene cause different responses to type 1 interferons. DNA from several human liver cancer cell lines and peripheral blood mononuclear cells was investigated. Nucleotide sequences of the interferon regulatory factor-1 gene and polymerase chain reaction products of its upstream region were determined directly and after cloning. The promoter activity of the upstream region of this gene was measured by the luciferase reporter assay. We found 4 point mutations in the upstream (-1 ∼ -495) region, and the luciferase promoter assay demonstrated that these mutations did modify promoter activity. Analysis of DNA from healthy volunteers showed that these mutations are single nucleotide polymorphisms. These results suggest that single nucleotide polymorphisms of the interferon regulatory factor-1 promoter contribute, at least in part, to determining responses to type 1 interferons.

Original languageEnglish
Pages (from-to)191-200
Number of pages10
JournalJournal of Cellular Biochemistry
Volume81
Issue numberSUPPL. 36
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Interferon Regulatory Factor-1
Interferon Type I
Polymorphism
Genes
Nucleotides
Transcription
Liver Neoplasms
Luciferases
Liver
Interferons
Mutation
Single Nucleotide Polymorphism
Assays
Cells
Cloning
Polymerase chain reaction
DNA
Reaction products
Point Mutation
Genetic Promoter Regions

Keywords

  • Interferon
  • IRF-1
  • Promoter activity
  • Response to IFNs
  • Single nucleotide polymorphism

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Interferon regulatory factor 1 promoter polymorphism and response to type 1 interferon. / Saito, Hidetsugu; Tada, Shinichiro; Ebinuma, Hirotoshi; Wakabayashi, Kanji; Takagi, Tamako; Saito, Yoshimasa; Nakamoto, Nobuhiro; Kurita, Satoshi; Ishii, Hiromasa.

In: Journal of Cellular Biochemistry, Vol. 81, No. SUPPL. 36, 01.01.2001, p. 191-200.

Research output: Contribution to journalArticle

Saito, Hidetsugu ; Tada, Shinichiro ; Ebinuma, Hirotoshi ; Wakabayashi, Kanji ; Takagi, Tamako ; Saito, Yoshimasa ; Nakamoto, Nobuhiro ; Kurita, Satoshi ; Ishii, Hiromasa. / Interferon regulatory factor 1 promoter polymorphism and response to type 1 interferon. In: Journal of Cellular Biochemistry. 2001 ; Vol. 81, No. SUPPL. 36. pp. 191-200.
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