Fluorescence lifetime imaging for viscosity and diffusion measurements
Fluorescence lifetime imaging for viscosity and diffusion measurements
复制标题
用于粘度和扩散测量的荧光寿命成像
DOI:
10.1117/12.2508744
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Economou A
中科院分区:
文献类型:
--
作者:
Economou A
Imaging viscosity and its spatiotemporal patterns can provide valuable insight into the underlying physical conditions of biochemical reactions and biological processes in cells and tissues. One way to measure viscosity and diffusion is the use of fluorescence recovery after photobleaching (FRAP). We combine FRAP with FLIM and time-resolved fluorescence anisotropy imaging (tr-FAIM), by acquiring time- and polarization-resolved fluorescence images in every frame of a FRAP series. This allows us to simultaneously monitor translational and rotational diffusion. This approach can be applied to measuring diffusion in homogeneous and heterogeneous environments, and in principle also allows the study of homo-FRET. Another way to measure viscosity and diffusion is through specific flexible dyes, e.g. fluorescent molecular rotors, whose fluorescence quantum yield and fluorescence lifetime depend on the viscosity of the environment, in combination with fluorescence lifetime imaging (FLIM). We show that a bodipybased fluorescent molecular rotor targeting mitochondria reports on their viscosity, which changes under physiological stimuli. Both methods can optically measure viscosity and diffusion on the micrometer scale.
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影响因子:
3.7
作者:
I. E. Steinmark;Arjuna L. James;P. Chung;P. Morton;M. Parsons;C. A. Dreiss;C. Lorenz;G. Yahioglu;K. Suhling
通讯作者:
I. E. Steinmark;Arjuna L. James;P. Chung;P. Morton;M. Parsons;C. A. Dreiss;C. Lorenz;G. Yahioglu;K. Suhling
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
K. Suhling;J. Siegel;S. Lévêque;D. Phillips;D. Davis
通讯作者:
D. Davis
DOI:
10.1021/jp066021i
发表时间:
2007
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
G. Hungerford;Ana Rei;M. Isabel C. Ferreira;K. Suhling;C. Tregidgo
通讯作者:
C. Tregidgo
影响因子:
3.4
作者:
J. Levitt;P. Morton;G. Fruhwirth;G. Santis;P. Chung;M. Parsons;K. Suhling
通讯作者:
K. Suhling
DOI:
--
发表时间:
1974
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
R. Peters;R. Peters;Jutta Peters;Jutta Peters;Karl;Karl;W. Bähr;Wolfgang Bähr
通讯作者:
Wolfgang Bähr