首页|β-防御素-2荧光素酶报告基因载体及克罗恩突变体的构建

β-防御素-2荧光素酶报告基因载体及克罗恩突变体的构建

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目的:构建人β-防御素-2(hBD-2)荧光素酶报告基因质粒及其克罗恩病(Crohn's,CD)相关突变体,并检测其在人胚胎肾T细胞(HEK-293T)中的活化.方法:通过基因重组构建包含hBD-2启动子序列的报告基因质粒hBD-2-780-luc,再通过定点突变技术在启动子区(-233位点)引入变异点(G变为C),构建突变体hBD-2-rout-he;经酶切及测序验证后,将报告基因质粒和野生型NOD2/CARD15蛋白真核表达载体共转染到HEK-293T中,TNF-α刺激后测定双荧光素酶的表达.结果:酶切和测序证实,构建了重组体hBD-2-780-luc及其突变体hBD-2-mut-luc,两者均能表达荧光素酶活性,且明显高于空载体.结论:hBD-2报告基因质粒hBD-2-780-luc及其CD相关突变体hBD-2-mut-luc构建成功,并在细胞内活化-表达荧光素酶.
Construction of luciferase reporter gene plasmid containing hBD-2 and mutant correlated with Crohn's disease
AIM: To construct and identify luciferase reporter gene plasmid containing hBD-2 and its mutant correlated with Crohn's disease. METHODS: The reporter gene plasmid hBD-2-780-luc was constructed by genetic recombination and hBD-2-mut-luc by site-directed mutagenesis to induce the mutation of the promoter for the - 233 site(G) in hBD-2 into C. After lipofectin-mediated transient transfection of HEK-293T with plasmids including one of the promoter gene plasmids and NOD2/CARD15 eukaryotic expression vector, luciferase was quantitated with TNF-α incentive. RESULTS: Double restriction enzyme digestion and nucleotide sequencing demonstrated completion of the recombination and mutagenesis. Two plasmids were obtained, and both of which could produce luciferase in HEK-293T cells with the stimulation of TNF-α significantly more than that of empty plasmid. CONCLUSION: The recombinant plasmids hBD-2-780-luc and hBD-2-mut-luc have been successfully constructed with luciferase expression in cells.

human beta-defensin 2Crohn's diseaseluciferase reporter gene plasmidsite-directed mutagenesis

姚国鹏、智发朝、张迎春、陈正彦、智佳、林勇、关婧、王继德、姜泊

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南方医科大学南方医院消化内科研究所,广东,广州,510515

β-防御素2 克罗恩病 荧光素酶报告基因质粒 定点突变

广东省自然科学基金

03004770

2009

第四军医大学学报
第四军医大学

第四军医大学学报

CSTPCDCSCD北大核心
影响因子:0.599
ISSN:1000-2790
年,卷(期):2009.30(20)
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