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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (7): 739-743.

• 研究原著 • 上一篇    下一篇

99mTc标记的大肠癌单克隆抗体在小鼠体内分布特点的研究

徐凌燕, 赵金彩1, 毛一卿, 张春丽2, 李慧, 张雅丽, 牛刚3, 阮元, 谭焕然   

  1. 北京大学医学部基础医学院药理学系, 北京100083;
    1中国人民解放军305 医院核医学科, 北京100017;
    2北京大学第一医院核医学科, 北京100034;
    3北京牛牛基因技术有限公司, 北京100088
  • 收稿日期:2004-04-13 修回日期:2004-05-27 出版日期:2004-07-26 发布日期:2020-11-20
  • 通讯作者: 谭焕然,女,教授,研究方向:分子药理学。Tel:010-82802004 E-mail:tanlab@sun.bjmu.edu.cn
  • 基金资助:
    国家科技部生命科学技术发展中心新药基金项目(№96-901-05-197);北京市科学技术委员会科技基金项目(№9555100500)

Biodistribution characteristics of 99mTc labeled anti-colon cancer monoclonal antibody in mice

XU Ling-Yan, ZHAO Jing-Cai1, MAOYi-Qing, ZHANG Chun-Li2, LIHui, ZHANG Ya-li, NIU Gang3, RUAN Yuan, TAN Huan- Ran   

  1. Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100083, China;
    1Department of NuclearMedicine, 305 Hospital of PLA, Beijing 100017, China;
    2Department of Nuclear Medicine, First Hospital, Peking University, Beijing 100034, China;
    3Beijing N &N Genetech Company, Beijing 100088, China
  • Received:2004-04-13 Revised:2004-05-27 Online:2004-07-26 Published:2020-11-20

摘要: 目的: 研究99m-Tc 标记的大肠癌单克隆抗体(99mTc-ACCmAb)在正常小鼠和荷瘤裸鼠体内的分布及在荷瘤裸鼠体内SPECT 成像的研究。方法:99m-Tc 和99mTc-ACCmAb 分别注射入正常小鼠、荷L010-16 人结肠癌裸鼠,按不同时间点采取小鼠的脏器进行同位素放射性活度的测定;并在不同时间测定荷L010-16 人结肠癌裸鼠注射99m Tc-ACCmAb 的SPECT显像。结果: 注射99mTc 后正常小鼠体内6 h 5 min 血液中的放射性活度与30 min 相比下降了76.6 %,是30 min 的23.4 %;肝脏中6 h 5 min 的放射性活度为30 min 的27.2 %,下降了72.8 %。尾静脉注射99mTc-ACCmAb 的正常小鼠,6 h 5 min 在血液中的放射性活度与30 min 血液中的放射性活度比较下降了68.4 %,是30 min 的31.6 %,24 h 为6 h 5 min 的6.1 %,下降了93.9 %;荷瘤裸鼠体内99m Tc-ACCmAb在24 h 血液中的放射性活度是6 h 5 min 的2.1 %,下降了97.9 %。SPECT 显像结果表明,虽然在注射99mTc-ACCmAb 20 h 血液与肿瘤的比值为最高,但在24 h 的成像结果仍然好于其他的时间点。结论: 99m-Tc 标记的大肠癌单克隆抗体可特异性浓聚于荷L010-16 人结肠癌裸鼠模型中,可能成为大肠癌根除手术中使用的手术导向体内诊断用药,保证手术切除肿瘤的彻底性。

关键词: 抗大肠癌单克隆抗体(99mTc-ACCmAb), 大肠癌, 分布, 成像实验

Abstract: AIM: To study the biodistribution of 99mTc labeled Anti-colon cancer monoclonal antibody (99mTc-ACCmAb) in normal and nude mice and the imaging of same antibody in nude mice, which were carried with human colon cancer.METHODS: Normal mice and Nude mice that are carried the L010-16 human colon cancer received, intravenously, 99mTc labeled monoclonal antibodies, and then the radioactivity was detected in normal mice in different time points and the imaging was checked by using the SPECT in nude mice.RESULTS: The radioactivity of 99mTc at 6 h 5 min decreased 76.6 % in comparison with the 30 min in normal mice blood, and the radioactivity was the 23.4 % of the 30 min in the blood.The radioactivity in 6 h 5 min was 27.2 % of the 30 min in normal mice liver and decreased 76.8 %.In the normal mice injected 99mTc-ACCmAb, the radioactivity at 6 h 5 min decreased 68.4 % compared with the 30 min in normal mice blood, the radioactivity was the 31.6 %of the 30min in the blood, the radioactivity at 24 h are 6.1 %and it dropped 93.9 % compare with the 6 h 5 min.In nude mice, the radioactivity of 99mTc-ACCmAb at 24 h is 2.1 % of the first half-life.It decreased 97.9 % compared with the 6 h 5 min.Although the ratio of blood and tumor was the highest, the imaging results were still better than other time points.CONCLUSION: 99m Tc-ACCmAb may concentrate in nude mice, which are carried with human colon carcinoma.It may become the diagnostic reagent for radio-immunoguided and ensure to remove the tumor during operations.

Key words: 99m Tc-ACCmAb, colon cancer, distribution, SPECT radio-imaging

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