该文章介绍了一种用于活细胞中敏感、同步成像不同单信使RNA（mRNA）的新型工具，即RNA稳定的外壳蛋白（RNA-stabilized coat proteins）。研究人员通过蛋白质工程，设计出了条件稳定的dMCP（去稳定化的MS2外壳蛋白）和dPCP（去稳定化的PP7外壳蛋白）变体，它们在未结合RNA时会被细胞快速降解，从而显著降低了背景荧光。这些探针能够高对比度地观察单个mRNA分子，并实现了双色成像，从而能同时追踪细胞内两种不同的RNA种类，这对于研究mRNA的定位和调控至关重要。References: Kuffner C J, Marzilli A M, Ngo J T. RNA-stabilized coat proteins for sensitive and simultaneous imaging of distinct single mRNAs in live cells[J]. Nature Methods, 2025: 1-12.
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