Red-emitting fluorescence probe for sensing viscosity in living cells
作者:Hui Wang、Le Zhou、Fengze Cai、Xuebing Shen、Jianqiang Sun、Yan Wei、Dexiang Feng、Zhijun Feng、Jing He
DOI:10.1007/s11696-019-00946-z
日期:2020.4
In this paper, we developed a red-emitting fluorescent probe TPSN based on triphenylamine-functionalized benzothiazole salts. TPSN exhibits a strong luminescence emission at about 637 nm in viscous media. Moreover, the fluorescence intensity of TPSN enhances approximately 94-fold from water to 99% glycerol. Cell imaging experiments reveals that TPSN presents high specificity for mitochondrial localization. The related mechanism study indicates that the localization property of TPSN is independent of the mitochondrial membrane potential. As a result, TPSN offers a promising tool to monitor the mitochondria viscosity in living cells.
The purpose of this project was to prepare fluorescent dyes that could absorb energy at relatively short wavelengths, and fluoresce in the near-IR region. To achieve this, copper- and palladium-mediated C-N couplings were used to prepare the 'cassettes', i.e the carbazole derivative 3b and the carbazole-, phenothiazine-, and phenoazine-squaraines 4b-d. These compounds have carbazole, phenothiazine, and phenoazine donor-components that absorb around about 300-320 nm, and squaraine acceptor-parts that fluoresce in the range 650-700 nm. The efficiencies of energy transfer from the donor to the acceptor, and the overall quantum yields of the cassettes were determined. (C) 2003 Elsevier Science Ltd. All rights reserved.
Galera, C.; Vaquero, J. J.; Navio, Garcia J. L., Journal of Heterocyclic Chemistry, 1986, vol. 23, p. 1889 - 1892
作者:Galera, C.、Vaquero, J. J.、Navio, Garcia J. L.、Alvarez-Builla, J.
DOI:——
日期:——
SUTORIS, V.;HALGAS, J.;SEKERKA, V.;FOLTINOVA, P.;GAPLOVSKY, A., CHEM. ZVESTI, 1983, 37, N 5, 653-662
作者:SUTORIS, V.、HALGAS, J.、SEKERKA, V.、FOLTINOVA, P.、GAPLOVSKY, A.
DOI:——
日期:——
A water-soluble “turn-on” fluorescent probe for specifically imaging mitochondria viscosity in living cells
increase of the viscosity in the water-glycerol system. Moreover, confocal microscopy indicates that MitoSN is sensitive to the local viscosity and selectivelystainsmitochondria, the body of zebrafish as well. Importantly, MitoSN is capable to identify the viscosity difference of mitochondria in normal and nystatin treated Hela cells. The work provides a useful tool to monitor the changes of viscosity