Development of an AND Logic-Gate-Type Fluorescent Probe for Ratiometric Imaging of Autolysosome in Cell Autophagy
作者:Ippei Takashima、Ryosuke Kawagoe、Itaru Hamachi、Akio Ojida
DOI:10.1002/chem.201405686
日期:2015.1.26
facilitates the highly selective and sensitive analysis of specific biological functions. In this article, we report an AND logic‐gate‐type fluorescent probe that can concurrently sense two biological events in living cells: H2O2 accumulation and acidification. The probe exhibits a unique fluorescence sensing mechanism, in which a xanthene fluorophore is oxidatively transformed to a xanthone derivative by
同时检测到两个生物学事件有助于对特定生物学功能进行高度选择性和灵敏的分析。在本文中,我们报告了一个AND逻辑门型荧光探针,该探针可以同时检测活细胞中的两个生物学事件:H 2 O 2积累和酸化。该探针具有独特的荧光感应机制,其中x吨荧光团被H 2 O 2氧化转化为x吨酮衍生物,从而导致明显的双发射变化。在弱酸性条件下,该转化过程显着加速,这使得H 2 O 2的选择性和灵敏检测成为可能。在酸性细胞室中产生。这种独特的传感特性已成功地应用于选择性线粒体自噬(mitophagy)中自溶酶体形成的比例荧光成像,这突显了这种新型探针在自噬研究中的实用性。