Positive and negative regulatory elements for the expression of the Alzheimer's disease amyloid precursor-encoding gene in mouse

Ryutaro Izumi, Takeshi Yamada, Shun ichi Yoshikai, Hiroyuki Sasaki, Masahira Hattori, Yoshiyuki Sakaki

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

We cloned, sequenced and characterized a promoter region of the mouse homologue of the Alzheimer's disease amyloid precursor protein (APP)-encoding gene. The promoter region is highly homologous to that of the human APP (hAPP) gene. It has a high G+C content, lacks typical 'TATA' and 'CAAT' boxes, and contains possible binding sites for AP-1, heatshock factor, Sp1 and AP-4. The promoter region was fused with the cat reporter gene, and the fusion genes were transfected to both the NB41A3 (mouse neuroblastoma) and L-cell lines. The promoter activity was monitored by chloramphenicol acetyltransferase (CAT) activity in a transient expression assay. The promoter was equally active in both cell lines. The deletion analysis revealed that there existed a negative regulatory element(s) between -153 and -100 bp and a positive element(s) between -100 and -37 bp. The negative element was shown to suppress the transcriptional activity of heterologous simian virus 40 promoter. DNase I footprinting experiments revealed that three nuclear protein-binding sites existed in the regulatory region, one in the negative and two in the positive regulatory regions. Gel retardation assay showed that Sp1 was one of the factors binding to the positive regulatory region. A nuclear factor binding to the negative regulatory region seemed to be missing in brain.

Original languageEnglish
Pages (from-to)189-195
Number of pages7
JournalGene
Volume112
Issue number2
DOIs
Publication statusPublished - 1992 Mar 15
Externally publishedYes

Fingerprint

Nucleic Acid Regulatory Sequences
Amyloid
Alzheimer Disease
Genetic Promoter Regions
Amyloid beta-Protein Precursor
Genes
Binding Sites
Cell Line
TATA Box
Chloramphenicol O-Acetyltransferase
Simian virus 40
Gene Fusion
Deoxyribonuclease I
Transcription Factor AP-1
Base Composition
Electrophoretic Mobility Shift Assay
Nuclear Proteins
Neuroblastoma
Reporter Genes
Protein Binding

Keywords

  • cis element
  • promoter
  • recombinant DNA
  • tissue specificity
  • Transcription factor

ASJC Scopus subject areas

  • Genetics

Cite this

Positive and negative regulatory elements for the expression of the Alzheimer's disease amyloid precursor-encoding gene in mouse. / Izumi, Ryutaro; Yamada, Takeshi; Yoshikai, Shun ichi; Sasaki, Hiroyuki; Hattori, Masahira; Sakaki, Yoshiyuki.

In: Gene, Vol. 112, No. 2, 15.03.1992, p. 189-195.

Research output: Contribution to journalArticle

Izumi, Ryutaro ; Yamada, Takeshi ; Yoshikai, Shun ichi ; Sasaki, Hiroyuki ; Hattori, Masahira ; Sakaki, Yoshiyuki. / Positive and negative regulatory elements for the expression of the Alzheimer's disease amyloid precursor-encoding gene in mouse. In: Gene. 1992 ; Vol. 112, No. 2. pp. 189-195.
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