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29 天
多代细胞追踪揭示 DNA 复制与遗传性损伤的动态机制
研究人员主要采用了以下关键技术方法:首先,利用 CRISPR-Cas9 介导的基因组编辑技术,在 U-2 OS 和 RPE-1 细胞中内源性标记 DNA 复制因子 PCNA 和 DNA 损伤标记蛋白 53BP1,分别融合荧光蛋白 mEmerald 和 mScarlet-I,实现了对 DNA 复制模式和遗传性 DNA 损伤的实时追踪。
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