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A smart approach toward rhodamine spiro-ring derivatives sensing platform for lysosome-targetable imaging applications

机译:用于溶酶体可靶向成像应用的若丹明螺环衍生物感应平台的智能方法

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摘要

As acidic organelles (pH 4.0-5.5) in living cells, lysosomes play key roles in numerous cellular biological processes, and associate with diverse diseases. Small molecular probes based fluorescence imaging techniques capable of providing information on target analytes in lysosomes are highly appreciated. Herein, for the first time we propose a new strategy of constructing pH-independent rhodamine based spiro-ring platform for lysosomal imaging applications. As a proof of concept, by incorporating lysosome specific moiety morpholine, a thio-lactone rhodamine analogue HN4MS for HOCl with high sensitivity, high selectivity and fast response at lysosomal pH value was developed. Moreover, possessing ability of imaging in lysosome organelles, the new probe was successfully applied to visualize exogenous and endogenous HOCl in living cells and tissues, which verified the present avenue for expansion of organelle targetable imaging tools.
机译:溶酶体作为活细胞中的酸性细胞器(pH 4.0-5.5),在众多细胞生物学过程中起着关键作用,并与多种疾病相关。高度赞赏基于小分子探针的荧光成像技术,该技术能够提供有关溶酶体中目标分析物的信息。在本文中,我们首次提出了构建溶酶体成像应用中不依赖pH值的若丹明螺旋环平台的新策略。作为概念的证明,通过掺入溶酶体特异性部分吗啉,开发了用于HOCl的硫代-内酯罗丹明类似物HN4MS,其具有高灵敏度,高选择性和在溶酶体pH值下的快速响应。此外,由于具有在溶酶体细胞器中成像的能力,该新探针已成功应用于可视化活细胞和组织中的外源性和内源性HOCl,从而验证了目前扩大细胞器可靶向成像工具的途径。

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