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- W4386229864 abstract "MicroRNA（miRNA）是癌症等重大疾病检测过程中一类非常重要的标志物。定量实时聚合酶链式反应由于逆转录限制主要存在扩增偏差大的问题，Northern印迹杂交存在灵敏度低的不足，下一代测序和单分子阵列技术兼有检测限低及灵敏度高的优势。然而，扩增偏差大或缺乏简化的工作流程不利于即时点对点医疗诊断、治疗以及预后。基于此，提出一种基于单分子检测原理的miRNA检测方法。首先，依据泊松分布，利用三明治夹心结构形成复合物，链霉亲和素-poly-HRP与酪胺-Alexa Fluor 488分子通过催化沉积的方式生成并放大信号；然后，运用纤维蛋白水凝胶而非微流控芯片固定复合物；最后，进行单分子计数处理，通过样点寻址、样点筛选、图像重合及信息提取等4个步骤识别并统计阳性点个数，从而实现miRNA超灵敏定量检测。以人类miR-21为检测对象，检测下限是6 fmol/L。该方法在体外诊断检测miRNA方面有较好的潜在应用价值。" @default.
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- W4386229864 date "2023-01-01" @default.
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- W4386229864 title "基于单分子检测原理的MicroRNA超灵敏检测研究" @default.
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