title: The helix-loop-helix transcription factor USF interacts with the basal promoter of human amyloid precursor protein.
abstract: Nuclear factors from HeLa, PC12, NG108-15 and SK-N-SH cell lines recognized an oligonucleotide (-56 to -37: APP-E1) containing an E box (CANNTG) which had previously been characterized as a DNase I-protected sequence in the basal promoter of the human amyloid precursor protein (APP) gene. Binding to APP-E1 was competed with an oligonucleotide encompassing the recognition site of the transcription factor USF. Antibodies directed against USF interacted with the APP-E1-protein complex and in vitro synthesized USF could bind APP-E1. Co-expression of USF cDNA transactivated a human APP-reporter gene construct. These results suggest that USF may play a role in the expression of the APP gene.
authors.affiliation: Department of Neurology and Neurosurgery, McGill University, Montreal, Que, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Bourbonnière
authors.forename: J
authors.initials: J
authors.lastname: Nalbantoglu
mesh_terms: D016564:Amyloid beta-Protein Precursor / Q000096:biosynthesis / Q000235:genetics*; D000818:Animals; D001483:Base Sequence; D001665:Binding Sites; D002460:Cell Line; D015500:Chloramphenicol O-Acetyltransferase / Q000096:biosynthesis; D004268:DNA-Binding Proteins; D005910:Glioma; D006367:HeLa Cells; D018257:Helix-Loop-Helix Motifs; D006801:Humans; D008969:Molecular Sequence Data; D009447:Neuroblastoma; D009838:Oligodeoxyribonucleotides; D016716:PC12 Cells; D011401:Promoter Regions, Genetic; D051381:Rats; D011994:Recombinant Proteins / Q000096:biosynthesis; D014157:Transcription Factors / Q000096:biosynthesis / Q000378:metabolism*; D014162:Transfection; D051720:Upstream Stimulatory Factors
chemical_list: D016564:Amyloid beta-Protein Precursor; D004268:DNA-Binding Proteins; D009838:Oligodeoxyribonucleotides; D011994:Recombinant Proteins; D014157:Transcription Factors; C497181:USF1 protein, human; D051720:Upstream Stimulatory Factors; C497182:Usf1 protein, rat; D015500:Chloramphenicol O-Acetyltransferase