Dual Methylation-Sensitive Restriction Endonucleases Coupling with an RPA-Assisted CRISPR/Cas13a System (DESCS) for Highly Sensitive Analysis of DNA Methylation and Its Application for Point-of-Care Detection.

DNA甲基化检测对癌症诊断和治疗具有重要意义。本文首次提出基于双甲基化敏感限制性内切酶与重组酶聚合酶扩增（RPA）辅助CRISPR/Cas13a系统（DESCS）的消化策略，用于准确灵敏测定位点特异性DNA甲基化。双内切酶体系选择性消化未甲基化靶标，对甲基化DNA无响应；完整甲基化靶标触发RPA快速放大，被消化的未甲基化靶标不能启动...