C/EBPα is involved in transcriptional regulation of mVGLUT2 gene expression
- VernacularTitle:C/EBPα参与小鼠胰岛β细胞囊泡谷氨酰胺转运子2基因表达的调控
- Author:
Zhuguo WU
;
Shiming LIU
;
Xinchun CHEN
- Publication Type:Journal Article
- Keywords:
Mouse pancreatic β cells;
Promoter;
Gene expression regulation;
CCAAT-enhancer-binding protein α;
Vesicular glutamate transporter 2
- From:
Chinese Journal of Pathophysiology
2010;26(1):142-145
- CountryChina
- Language:Chinese
-
Abstract:
AIM: The main purpose of this study is to investigate the regulatory role of C/EBPα in mouse vesicular glutamate transporter 2(mVGLUT2) gene expression. METHODS: The promoter region of mVGLUT2 was cloned to PGL3-basic vector. Site-direction mutation was used to identify the CCAAT-enhancer-binding protein α(C/EBPα) binding site. The promoter activity was observed by luciferase system. The binding between C/EBPα protein and mVGLTU2 promoter region was determined by EMSA. The C/EBPα gene expression was inhibited by its specific siRNA. RESULTS: mVGLUT2 promoter activity decreased about 50% after mutation of C/EBPα binding site. EMSA showed that C/EBPα protein bound onto mVGLUT2 promoter region. Meanwhile, when C/EBPα gene expression was inhibited by its specific siRNA, mVGLUT2 promoter activity, mRNA level and protein level were decreased about 60%, 40% and 45%, respectively. CONCLUSION: C/EBPα is involved in the regulation of mVGLUT2 gene expression.
