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Expression and purification of fusion protein of cloned hUNC93-B1 gene and antibody preparation
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 16
- DOI:
- 10.3321/j.issn:1000-2790.2007.16.001
- Key Word:
- hUNC93-B1基因;心血管疾病;基因表达;蛋白纯化
Abstract： 目的:构建人hUNC93-B1基因的原核表达载体,诱导其表达并纯化该蛋白,制备特异性高效价抗体. 方法:设计针对hUNC93-B1基因的特异性引物,通过PCR的方法扩增目的基因,克隆入pMD-18T载体,测序全部正确后亚克隆入原核表达载体pRSET-A. 将构建的载体导入大肠杆菌BL21中,用IPTG诱导表达. 经SDS-PAGE电泳鉴定后用镍柱纯化融合蛋白. 与免疫佐剂联用,免疫家兔制备特异性抗体. 结果:PCR扩增得到长度为1808 bp的片断,结果与GenBank中人hUNC93-B1的基因序列完全一致,成功构建了原核表达载体hUNC93-B1-pRSET-A. 导入大肠杆菌后经诱导得到一条约Mr 72 000的新蛋白条带. 免疫家兔后获得了1:64 000的高效价特异性抗人hUNC93-B1血清. 结论:成功地克隆了人hUNC93-B1基因,使其编码的蛋白质在原核细胞中顺利表达,并纯化出该种蛋白. 制备了特异性抗体,为研究hUNC93-B1基因与人类心血管疾病的关系提供依据.
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