机构地区: 中国农业科学院上海兽医研究所
出 处: 《生物技术通报》 2011年第6期94-98,共5页
摘 要: 采用RT-PCR方法从小鼠巨噬细胞中克隆小鼠Toll样受体3(TLR3)基因,基因测序表明获得了小鼠全长TLR3cDNA,构建了真核表达质粒p3XFLAG-CMV-7.1-TLR3。重组质粒转染293T细胞,Western blotting检测蛋白表达,表达蛋白质的相对分子量与预计相符。采用TLR3的阳性刺激物poly(I:C)刺激重组质粒转染的293T细胞,双荧光素酶报告基因系统检测发现能激活下游转录因子NF-κB的转录活性,并能诱导TLR3下游细胞因子IL-6和TNF-α的表达。小鼠TLR3基因的克隆和表达,为研究TLR3介导的信号通路及其在抗病毒免疫中的作用打下基础。 Full-length eDNA of murine Toll-like receptor 3 (TLR3) was cloned by RT-PCR and inserted into p3XFLAG-CMV-7. 1 plasmid to generate a recombinant plasmid p3XFLAG-CMV-7. 1-TLR3. The recombinant plasmid expressing TLR3 were transfeeted into 293T ceils and the expression of TLR3 was confirmed by Western blotting. Stimulation of the transfeetants with poly( I: C) ,a agonist of TLR3 ,resulted in the activation of NF-κB and a increased expression of IL-6 and TNF-α. The cloned TLR3 would provide a useful tool for investigation of its role in antiviral immunity.
领 域: [生物学]