title: Transcription factor NF2d9 (LBP-1a) interacts with the positive regulatory element for the xenobiotic responsive element.
abstract: PREX is a positive regulatory element for xenobiotic responsive element (XRE)-mediated gene expression that is located upstream of the XRE in the CYP2A8 gene. Using gel mobility shift assays, we demonstrated that NF2d9 (LBP-1a), a transcription factor related to CP2 (LBP-1c/LSF), bound directly to PREX and also interacts indirectly with XRE. Luciferase-reporter gene assays showed that the overexpression of NF2d9 enhanced PREX and XRE-driven CYP2A8 gene transcriptional induction. These findings suggest that the interaction of NF2d9 with PREX and XRE enhances XRE-driven CYP2A8 gene transcriptional induction.
authors.affiliation: Division of Medicinal Safety Science, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
authors.forename: Kouichi
authors.initials: K
authors.lastname: Kurose
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tohkin
authors.forename: Ryuichi
authors.initials: R
authors.lastname: Hasegawa
mesh_terms: D000818:Animals; D001483:Base Sequence; D006224:Cricetinae; D004742:Enhancer Elements, Genetic / Q000235:genetics / Q000502:physiology*; D008647:Mesocricetus; D015345:Oligonucleotide Probes; D012045:Regulatory Sequences, Nucleic Acid; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism*
chemical_list: D015345:Oligonucleotide Probes; D014157:Transcription Factors