Development of a Highly Selective and Sensitive Fluorescent Probe for Imaging RNA Dynamics in Live Cells
作者:Lan Fang、Wen Shao、Shu-Tang Zeng、Gui-Xue Tang、Jia-Tong Yan、Shuo-Bin Chen、Zhi-Shu Huang、Jia-Heng Tan、Xiu-Cai Chen
DOI:10.3390/molecules27206927
日期:——
to the development of small-molecule fluorescent probes for RNA imaging. However, most of the reported studies have mainly focused on improving the photostability, permeability, long emission wavelength, and compatibility with live-cell imaging of RNA probes. Less attention has been paid to the selectivity and detection limit of this class of probes. Highly selective and sensitive RNA probes are still
RNA 成像对于了解其复杂的时空动力学和细胞功能非常重要。已投入大量精力开发用于 RNA 成像的小分子荧光探针。然而,大多数报道的研究主要集中在提高 RNA 探针的光稳定性、渗透性、长发射波长以及与活细胞成像的兼容性。对这类探针的选择性和检测限关注较少。高选择性和灵敏的 RNA 探针仍然很少可用。在这项研究中,设计和合成了一组新的苯乙烯基探针,目的是提高检测限并保持先导探针QUID-1对 RNA 的选择性。在这些新合成的化合物中,QUID-2是最有希望的候选人。QUID-2对 RNA的检测限 (LOD) 值在溶液中高达 1.8 ng/mL。与QUID-1相比,该属性得到了显着改善。进一步的光谱学和细胞成像研究表明,QUID-2在高选择性和灵敏的 RNA 成像方面优于市售的 RNA 染色探针 SYTO RNASelect。此外,QUID-2表现出优异的光稳定性和低细胞毒性。使用QUID-2,在活细胞中揭示了