Cloning and characterization of the mouse JDP2 gene promoter reveal negative regulation by p53
文献类型: 外文期刊
作者: Xu, Yuanhong 1 ; Jin, Chunyuan 2 ; Liu, Zhe 1 ; Pan, Jianzhi 3 ; Li, Hongjie 2 ; Zhang, Zhongbo 1 ; Bi, Shulong 1 ; Yokoy 1 ;
作者机构: 1.China Med Univ, Hosp 1, Dept Pancreat Gastroenterol Surg, Shenyang 110001, Peoples R China
2.NYU, Sch Med, Dept Environm Med, Tuxedo Pk, NY 10987 USA
3.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet, Hangzhou, Zhejiang, Peoples R China
4.Kaohsiung Med Univ, Grad Inst Med, Kaohsiung 807, Taiwan
关键词: JDP2;p53;Promoter;Transcriptional regulation
期刊名称:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS ( 影响因子:3.575; 五年影响因子:3.381 )
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收录情况: SCI
摘要: Jun dimerization protein 2 (JDP2) is a repressor of transcription factor AP-1. To investigate the transcriptional regulation of the JDP2 gene, we cloned the 5′-flanking region of the mouse JDP2 gene. Primer extension analysis revealed a new transcription start site (+1). Promoter analysis showed that the region from nt -343 to nt +177 contains basal transcriptional activity. Interestingly, the tumor suppressor p53 significantly repressed the transcriptional activity of the JDP2 promoter. Given that JDP2 inhibits expression of p53, our results suggest a negative feedback loop between JDP2 and p53, and a direct link between JDP2 and a key oncogenic pathway.
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