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- W2883191008 abstract "Subcellular viscosity is essential for cell functions and may indicate its physiological status. We screen two fluorescent probes by engineering tetraphenylethene (TPE) for measuring viscosity in mitochondria and lysosomes, respectively. These two probes are only weakly emissive in nonviscous medium and the emission signals are greatly enhanced in viscous medium due to the restriction of intramolecular motion. The presence of pyridium has endowed one probe with mitochondrial specificity, while the presence of indole ring has granted the other probe with lysosome-targeting ability. Their optical properties are characterized in vitro and their applications in imaging viscosity variations in mitochondria and lysosomes are also demonstrated in living cells under different stimulated processes. In addition, an increase in both mitochondrial and lysosomal viscosity during mitophagy was revealed for the first time with our probes. To our knowledge, this is the first time that TPE is engineered to be fluorescent molecular viscosimeters that possess desirable aqueous solubility, red-shifted emission, and organelle specificity." @default.
- W2883191008 created "2018-08-03" @default.
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- W2883191008 date "2018-07-13" @default.
- W2883191008 modified "2023-10-16" @default.
- W2883191008 title "Engineering Organelle-Specific Molecular Viscosimeters Using Aggregation-Induced Emission Luminogens for Live Cell Imaging" @default.
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- W2883191008 doi "https://doi.org/10.1021/acs.analchem.8b02940" @default.
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