Abstract
A viscosity-sensitive, lysosome-targeted near-infrared fluorescent probe (PYATT) was reported in this paper. The fluorescent spectra of PYATT are strongly dependent on viscosity, resulting in a Stokes shift of about 190 nm. Given its photostability, low cytotoxicity, and high fluorescence quantum yield, PYATT is expected to be used in cell imaging. Due to the higher viscosity of tumor cells than normal cells, the fluorescence intensity of PYATT in tumor cells is higher than normal cells, which can realize the visualization of tumors. The near-infrared probe (PYATT) is viscosity-dependent in lysosomes, which is valuable in early diagnosis and treatment of tumor.
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This work was financially supported by the Henan Provincial Science and Technology Research Project of China (No. 232102310369).
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Y.W.: supervision, conceptualization, and project administration. L.F.: methodology and formal analysis. Y.T.: formal analysis and validation. Y.D.: software. W.Q.: writing, review and editing.
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Wang, Y., Fu, L., Tan, Y. et al. A near-infrared fluorescent probe with viscosity sensitivity in lysosome for cancer visualization. Anal Bioanal Chem 416, 341–348 (2024). https://doi.org/10.1007/s00216-023-05050-6
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DOI: https://doi.org/10.1007/s00216-023-05050-6