Dual mode monitoring probe for mitochondrial viscosity in single cell
Sensors and Actuators B: Chemical(2014)
摘要
Viscosity strongly influences intracellular transportation of mass and signal, and although bulk viscosity can be well measured with macroscopic samples quantities, microscale measurements in live cells still remain a challenge. By introducing a CHO group into the meso-position of the pentamethine chain, a thiazole-Cy5 dye based two-photon fluorescence probe, Mito-V, was developed. It exhibited a selective response to solution viscosity by fluorescence ratio and lifetime methods. More importantly, Mito-V can localize in mitochondria and quantitatively image its viscosity changes by the dual fluorescence mode during the apoptosis.
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关键词
Near-infrared dye,Viscosity probe,Fluorescence ratio,Fluorescence lifetime,Mitochondrial viscosity,Apoptosis
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