The tissue-specificity associated region and motif of an emx2 downstream enhancer CNE2.04 in zebrafish

被引：0

作者：

Chen, Xudong ^{[1
]}

Zhang, Qi ^{[1
]}

Lin, Jia ^{[1
]}

Zhang, Yinglan ^{[1
]}

Zhang, Yawen ^{[1
]}

Gui, Yiting ^{[1
]}

Zhang, Ruizhi ^{[1
]}

Liu, Ting ^{[1
]}

Li, Qiang ^{[1
]}

机构：

[1] Fudan Univ, Childrens Hosp, Inst Pediat, Translat Med Ctr Dev & Dis,Natl Childrens Med Ctr,, Shanghai 201102, Peoples R China

来源：

GENE EXPRESSION PATTERNS | 2022年 / 45卷

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

emx2; CNE2.04; Enhancer; Zebrafish; Motif; STEM-CELLS; GENE EMX2; EXPRESSION; IDENTIFICATION; BROWSER; GENOME; PROLIFERATION; MUTATION; ROLES; BRAIN;

D O I：

10.1016/j.gep.2022.119269

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Background: Expression level of EMX2 plays an important role in the development of nervous system and cancers. CNE2.04, a conserved enhancer downstream of emx2, drives fluorescent protein expression in the similar pattern of emx2. Methods: CNE2.04 truncated or motif-mutated transgenic reporter plasmids were constructed and injected into the zebrafish fertilized egg with Tol2 mRNA at the unicellular stage of zebrafish eggs. The green fluorescence expression patterns were observed at 24, 48, and 72 hpf, and the fluorescence rates of different tissues were counted at 48 hpf. Results: Compared to CNE2.04, CNE2.04-R400 had comparable enhancer activity, while the tissue specificity of CNE2.04-L400 was obviously changed. Motif CCCCTC mutation obviously changed the enhancer activity, while motif CCGCTC mutations also changed it. Conclusion: Due to their correlation with tissue specificity, CNE2.04-R400 is associated with the tissue-specificity of CNE2.04, and motif CCCCTC plays an important role in the enhancer activity of CNE2.04.

引用

页数：7