Nucleic Acids Research, 2000, Vol. 28, No. 14 2627-2633
© 2000 Oxford University Press
The mouse L-histidine decarboxylase gene: structure and transcriptional regulation by CpG methylation in the promoter region
Department of Cellular Pharmacology, Tohoku University School of Medicine, Seiryo-machi 2-1, Aoba-ku, Sendai 980-8575, Japan, 1Department of Internal Medicine I, Tohoku University School of Medicine, Seiryo-machi 1-1, Aoba-ku, Sendai 980-8574, Japan and 2Department of Biochemistry, Hiroshima University School of Medicine, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
To investigate the regulation of mouse L-histidine decarboxylase (HDC) gene expression, we isolated genomic DNA clones encoding HDC. Structural analysis revealed that the mouse HDC gene was composed of 12 exons, spanning ~24 kb. Northern blotting analysis indicated that, among the cell lines examined, a high level of HDC gene expression was restricted to mature mast cell lines and an erythroblastic cell line. The gene was induced strongly in the mouse immature mast cell line P815 after incubation in the peritoneal cavity of BDF1 mice. We observed that the promoter region was demethylated in the HDC-expressing cell lines and in induced P815 cells. Interestingly, forced demethylation by 5-azacytidine (5-azaC) treatment induced high expression of HDC mRNA in P815 cells. The activity of a mouse HDC promoterreporter construct stably transfected in P815 cells was repressed by in vitro patch-methylation. This low promoter activity of the patch-methylated reporter construct was restored after 5-azaC treatment, which demethylated the patch-methylated promoter. These results indicate that DNA methylation state of the promoter region controls HDC gene expression.
* To whom correspondence should be addressed. Tel: +81 22 717 8058; Fax: +81 22 717 8058; Email: ohtsu@mail.cc.tohoku.ac.jp
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
H. L. Haas, O. A. Sergeeva, and O. Selbach Histamine in the Nervous System Physiol Rev, July 1, 2008; 88(3): 1183 - 1241. [Abstract] [Full Text] [PDF] |
||||
![]() |
W. Ai, Y. Liu, M. Langlois, and T. C. Wang Kruppel-like Factor 4 (KLF4) Represses Histidine Decarboxylase Gene Expression through an Upstream Sp1 Site and Downstream Gastrin Responsive Elements J. Biol. Chem., March 5, 2004; 279(10): 8684 - 8693. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. M. Thomas, K. Haleem, A. B. Siddique, W. J. Simmons, N. Sen, D.-J. Zhang, and V. K. Tsiagbe Regulation of Mouse Mammary Tumor Virus env Transcriptional Activator Initiated Mammary Tumor Virus Superantigen Transcripts in Lymphomas of SJL/J Mice: Role of Ikaros, Demethylation, and Chromatin Structural Change in the Transcriptional Activation of Mammary Tumor Virus Superantigen J. Immunol., January 1, 2003; 170(1): 218 - 227. [Abstract] [Full Text] [PDF] |
||||


