摘要
为构建鼠类朊蛋白Shadoo基因重组真核表达质粒,并分析类朊蛋白Shadoo在鼠神经瘤细胞(Neuro-2α)内表达及定位。采用PCR方法把Flag标签序列插入到Shadoo阅读框122与123氨基酸位点之间,构建Shadoo-Flag融合基因片段,把Shadoo-Flag片段插入到真核表达质粒pcDNA3.1,构建重组真核表达pcDNA3.1-Shadoo-Flag,质粒酶切、测序鉴定正确后,脂质体法转入Neuro-2α细胞,检测Shadoo基因表达及表达部位。结果重组真核表达质粒pcDNA3.1-Shadoo-Flag转入Neuro-2α细胞,能够正确表达出相对分子质量为12 000的Shadoo蛋白,并定位于细胞膜。
To construct the recombinant eukaryotic expression plasmid pcDNA3. 1-Shadoo-Flag, Shadoo ORF with Flag epitope tag (8 aa) inserted between 122-123 of ORF by PCR method, pcD-NA3.1-Shadoo-Flag was cloned with Shadoo-Flag through HindⅢ and BamH Ⅰ . pcDNA3.1-Sha-doo-Flag was verified by double enzyme digestion and sequencing. Shadoo expression level and lo- cation in Neuro-2a were investigated after the constructed eukaryotic expression plamid was trans- fected to Neuro-2a cell line by lipofectamin method. The constructed eukaryotic expression plamid was transfected to Neuro-2α cell line by lipofectamin method,and fused protein in eukaryotic cell was detected by immunocytochemical staining as well as Western blot. Recombinant eukaryotic ex-pression plasmid pcDNA3. 1-Shadoo-Flag was successfully contructed. Shadoo fusion protein was expressed in Neuro-2α cell line and Shadoo is located on the membrane of Neuro-2α cell. It estab-lishs the foundation for future research on Shadoo gene function in TSE.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2013年第8期1223-1226,共4页
Chinese Journal of Veterinary Science
基金
国家自然科学基金资助项目(30972197
31072148
31101782)
吉林省科技发展计划资助项目(201105038
201215096)