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科学通报  2013 

人肝细胞性肝癌细胞株的高特异识别核酸适配体筛选

DOI: 10.1360/972013-360, PP. 2745-2750

Keywords: 核酸适配体,Cell-SELEX,肝癌,早期诊断

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Abstract:

从分子水平上发展高特异和高灵敏的分子识别探针对肝癌的特异性识别和早期诊断具有非常重要的意义.本文以人肝细胞性肝癌细胞株Bel-7404为靶细胞株,人胆管细胞性肝癌细胞株QBC-939为对照细胞株,利用Cell-SELEX技术筛选得到4条与肝细胞性肝癌细胞株高亲和识别的核酸适配体探针,与靶细胞的结合解离常数均在纳摩尔级水平.通过与不同肝癌及其他肿瘤细胞系结合分析表明,筛选的核酸适配体不但能区分其他类型的肿瘤细胞株,还能区分肝细胞性肝癌的其他细胞株,表现出对靶细胞株的高度特异的识别性能,为肝细胞性肝癌的特异识别、早期诊断和肝癌的病理分型提供了一种有效的手段和方法.

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