菌斑。因此我们随机挑取8个白斑, 经PCR反应直接分离插入的cDNA。结果显示, 所有白斑均有插入片段, 大小0.5 kb~3.0 kb, 平均超过1.0 kb, 完全符合质量要求。 体内外一系列实验显示, ND1 mAb特异性强, 亲和力高, 并优于目前广泛采用的美国商业产品抗cEA mAb[5]。因此, 成功构建人大肠癌抗原基因的 cDNA噬菌体表达文库为寻找特异性抗原, 并为应用于临床大肠癌早期诊断及治疗奠定了基础。
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[2] Bleday R, Song J, Walker ES, et al. Characterization of a new monoclonal antibody to a cell surface antigen on colorectal cancer and fetal gut tissues[J]. Cancer, 1986, 57(3): 433-440.
[3] Line A, Slucka Z, Stengrevics A, et al. Characterization of tumour associated antigens in colon cancer[J]. Cancer Immunol Immunother, 2002, 51(10): 574-582.
[4] Santegoets SJ, Schreurs MW, Reurs AW, et al. Identification and characterization of ErbB3binding protein1 as a target for immunotherapy[J]. J Immuno, 2007, 179(3): 2005-2012.
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