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模拟肺癌外周血微转移癌细胞富集检测方法的建立 被引量:1

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摘要 目的制备特异的纳米免疫磁性微球,结合免疫细胞化学技术研制肺癌细胞富集检测试剂盒,探讨在肺癌患者外周血中微转移癌细胞检测的可行性及灵敏度。方法用反相微乳法制备纳米磁性微球,然后以碳二亚胺为交联剂将抗体与微球连接,制备纳米免疫磁性微球;将人肺腺癌细胞(A549)与PBMC及全血混匀建立癌细胞微转移模型,经纳米免疫磁性微球吸附和磁性分离后进行肺癌细胞的免疫细胞化学鉴定,检测此方法的特异性及灵敏度,建立癌细胞富集检测方法。结果制备的纳米免疫磁性微球能够特异地与A549细胞结合并能将细胞磁性分离,当PBMC与A549比为5×106:1时可检测到癌细胞,并且能检测出1ml外周血中1个癌细胞,未有假阳性。结论制备的肺癌细胞富集检测试剂能有效的从外周血中分离和鉴定出微转移的癌细胞,具有较高的灵敏度,为临床提供了一种简便、快速、敏感的肿瘤微转移病灶检测技术,可提高肺癌转移及复发的诊断率。
出处 《广东医学》 CAS CSCD 北大核心 2007年第11期1748-1750,共3页 Guangdong Medical Journal
基金 国家科技攻关计划项目(编号:2003BA310A23)
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