旋毛虫肌幼虫核酸疫苗的构建及其在小鼠体内的表达

Construction of DNA Vaccine of Trichinella spiralis Muscle Larvae and Its Expression in Mice

目的 构建和表达旋毛虫肌幼虫编码相对分子质量 (Mr) 3 10 0 0抗原结构基因 (TspE1)的重组质粒。 方法 通过逆转录 聚合酶链反应 (RT PCR)特异性扩增TspE1基因 ,构建重组质粒 pUC18 TspE1,并将TspE1基因亚克隆入真核表达载体 pcDNA3中。用基因枪免疫小鼠 ,通过苏木素 伊红 (HE)染色及免疫组化观察重组质粒在皮肤组织内的表达情况。 结果与结论 成功构建 pcDNA3 TspE1重组质粒 。

Objective To construct and express recombinant plasmid containing the structural gene encoding {Mr 31 000} antigen of Trichinella spiralis muscle larvae. MethodsThe target gene TspE1 was amplified by RT_PCR, cloned into pUC18 vector, and sub_cloned into the eukaryotic expression vector pcDNA3. BALB/c mice were immunized with the purified recombinant plasmid pcDNA3_TspE1 by gene_gun bombardment. The expression of recombinant plasmid in the skin tissue was observed by HE staining and immunohistochemical staining. Results and Conclusion The recombinant plasmid pcDNA3_TspE1 was successfully constructed and expressed in the BALB/c mice.