Fluorescence Lifetime Imaging Microscopy for the Monitoring of Green Fluorescent Protein-Tagged Androgen Receptors in Living Cells

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概要

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• Fluorescence lifetime imaging microscopy (FLIM) was used to monitor the interaction between androgen receptor (AR) tagging of a green fluorescent protein (GFP) and the ligands in living cells. The fluorescence lifetime of the AR-GFP without ligands was ca. 3.1 ns, which was reduced to ca. 2.5 ns after treatment with agonist 5α-dihydrotestosterone. On the other hand, the fluorescence lifetime of AR-GFP was not changed after treatment with antagonist hydroxyflutamide. The reaction kinetics was simulated in the present study, and the obtained results indicated the possibility of the presence of an intermediate complex during the reaction. FLIM can be used to record the ratio of the AR as it reacts with an agonist, and, therefore, it is useful for acquiring information concerning the interaction between AR and ligands in living cells.

著者

• Li Xu

  Department of Applied Chemistry, Graduate School of Engineering, Kyushu University

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