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1.北京师范大学
2.中国医学科学院放射医学研究所
收稿日期:1987-11-23,
纸质出版日期:1989-11
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陆丽仪, 韩章淑, 戴黛红, 等. 抗CEA单克隆抗体碘标记方法研究[J]. 核技术, 1989,12(11):648-652.
Liyi Lu, Zhangshu Han, Daihong Dai, et al. Studies of the radioiodination methods for anti-CEA monoclonal antibody[J]. Nuclear techniques, 1989, 12(11): 648-652.
本文报道用几种碘标记方法(Iodogen、ChT、NBS、Bolton-Hunter试剂等)制备了
125
I(131I)-抗CEA单克隆抗体。产品通过Sephadex G-50(或-75)柱凝胶过滤纯化后,经纸层析和高压液相层析法鉴定,其放化纯度达到使用要求;用免疫放射双抗体夹心法测定,标记抗体能保持良好的免疫活性。同时我们对上述几种碘标方法进行比较研究,结果NBS法标记率最高,达98%
Iodogen法免疫活性保持最好、与CEA的净结合数达9960cpm(3ng CEA/250µl)。
The preparation of
125
I (
131
I) -anti-CEA monoclonal antibody by using several radioiodination methods (Iodogen
ChT
NBS
and Bolton-Hunter reagent etc.) was described. Purification of the product was carried out by the Sephadex G-50 (or 75) gel-filtration column. Its radiochemical purity checked by paper chromatography and HPLC was satisfactory for use. The labelled antibody showed good immunoreactivity
when it was measured by IRMA-bi-antibody sandwich method. The comparative studies for above several radioiodination methods were carried out
among which the iodination efficiency of NBS method was the best (98%) while the immunoreactivity of Iodogen method was the best and specific binding of labelled antibody to CEA was 9960 cpm (3ng CEA/250 µl) .
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