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Biochem Biophys Res Commun. 2004 Apr 9;316(3):930-6.

Cell cycle-dependent regulation of the human aurora B promoter.

Author information

1
Department of Molecular Pathobiochemistry, Gifu University School of Medicine, Tsukasamachi-40, Gifu 500-8705, Japan. yo@cc.gifu-u.ac.jp

Abstract

Aurora B is an important regulator of mitosis, and its mRNA and protein levels are tightly regulated during the cell cycle. In this study, we cloned the 5' flanking region of the human aurora B gene and characterized its promoter activity. Two major transcription initiation sites were identified by primer extension. aurora B promoter activity was upregulated during M phase, and its cell cycle-dependent element (CDE) and cell cycle-gene homology region (CHR) upstream of the transcription initiation sites regulated the cell cycle-dependent promoter activity. Several CDE-binding protein complexes were identified using the electrophoretic mobility shift assay. Using the biotin-streptavidin pull-down assay, binding of E2F-1, E2F-4, and DP-2, but not of DP-1, to the CDE was detected. These results demonstrate that aurora B mRNA level is regulated by CDE-CHR and that a subset of E2F/DP family proteins binds to the CDE.

PMID:
15033491
DOI:
10.1016/j.bbrc.2004.01.178
[Indexed for MEDLINE]

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