左绍志;张桐嘉;常乐;杨滨僮;宫鹏涛;李建华;杨举;李赫;张国才;张西臣;

• 1:吉林大学动物医学学院

摘要(Abstract)：

目的原核表达旋毛虫与肝癌细胞相关基因CK-1,并进行鉴定。方法以旋毛虫cDNA为模板,PCR扩增CK-1基因,克隆至原核表达载体pET-28a(+)中,构建重组表达质粒pET-28a-CK-1,转化感受态大肠埃希菌(E.coli)BL21(DE3),IPTG分别诱导表达3、4、5 h,表达产物进行12%SDS-PAGE分析。以纯化的旋毛虫肌幼虫免疫小鼠制备鼠抗旋毛虫肌幼虫阳性血清,以H7402细胞免疫小鼠制备鼠抗H7402全细胞蛋白阳性血清,以重组CK-1蛋白免疫小鼠制备鼠抗CK-1蛋白阳性血清,分别以其作为一抗,进行Western blot鉴定。结果重组表达质粒pET-28a(+)-CK-1经双酶切及测序鉴定证明构建正确;IPTG最佳诱导时间为4 h,表达的重组CK-1蛋白以包涵体形式存在,表达量占菌体总蛋白的37.5%;重组CK-1蛋白可被鼠抗旋毛虫肌幼虫阳性血清和鼠抗H7402全细胞蛋白阳性血清识别,鼠抗CK-1蛋白阳性血清可识别旋毛虫肌幼虫蛋白和H7402全细胞蛋白,在相对分子质量38 500处均可见特异性条带,表明重组CK-1蛋白是一个交叉抗原,且具有良好的反应原性。结论原核表达了旋毛虫CK-1基因,为进一步研究旋毛虫的抗肿瘤效应奠定了基础。

关键词(KeyWords)： 旋毛虫;肝癌细胞;CK-1基因;原核细胞;基因表达

Abstract:

Keywords:

基金项目(Foundation): 吉林省科技发展计划项目(20106044)

作者(Authors): 左绍志;张桐嘉;常乐;杨滨僮;宫鹏涛;李建华;杨举;李赫;张国才;张西臣;

DOI: 10.13200/j.cnki.cjb.000247

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