Revisiting PFA-mediated tissue fixation chemistry: FixEL enables trapping of small molecules in the brain to visualize their distribution changes.
Revisiting PFA-mediated tissue fixation chemistry: FixEL enables trapping of small molecules in the brain to visualize their distribution changes.
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DOI:
10.1016/j.chempr.2022.11.005
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发表时间:
2023-03
期刊:
影响因子:
23.5
通讯作者:
Hamachi I
中科院分区:
文献类型:
--
作者:
Nonaka H;Mino T;Sakamoto S;Oh JH;Watanabe Y;Ishikawa M;Tsushima A;Amaike K;Kiyonaka S;Tamura T;Aricescu AR;Kakegawa W;Miura E;Yuzaki M;Hamachi I
Various small molecules have been used as functional probes for tissue imaging in medical diagnosis and pharmaceutical drugs for disease treatment. The spatial distribution, target selectivity, and diffusion/excretion kinetics of small molecules in structurally complicated specimens are critical for function. However, robust methods for precisely evaluating these parameters in the brain have been limited. Herein, we report a new method termed “fixation-driven chemical cross-linking of exogenous ligands (FixEL),” which traps and images exogenously administered molecules of interest (MOIs) in complex tissues. This method relies on protein-MOI interactions and chemical cross-linking of amine-tethered MOI with paraformaldehyde used for perfusion fixation. FixEL is used to obtain images of the distribution of the small molecules, which addresses selective/nonselective binding to proteins, time-dependent localization changes, and diffusion/retention kinetics of MOIs such as the scaffold of PET tracer derivatives or drug-like small molecules. Various small molecules are used for imaging agents and medicines. Although their molecular properties such as spatial distribution in vivo are critical for the function, robust methods for evaluating them have been limited. Herein, we report a new method to trap and visualize exogenously administered molecules of interest (MOIs) in the brain. This method realizes to obtain images of the 3D distribution of the small molecules, which addresses selective/nonselective binding to proteins, time-dependent localization changes, and diffusion/retention kinetics of MOI.
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DOI:
10.1126/science.1260088
发表时间:
2015-01-30
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Chen F;Tillberg PW;Boyden ES
通讯作者:
Boyden ES
影响因子:
16.6
作者:
Im D;Inoue A;Fujiwara T;Nakane T;Yamanaka Y;Uemura T;Mori C;Shiimura Y;Kimura KT;Asada H;Nomura N;Tanaka T;Yamashita A;Nango E;Tono K;Kadji FMN;Aoki J;Iwata S;Shimamura T
通讯作者:
Shimamura T
DOI:
10.3791/50326
发表时间:
2013-05-12
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
作者:
DeVos SL;Miller TM
通讯作者:
Miller TM
DOI:
10.1016/b978-0-12-386456-7.07402-5
发表时间:
2014-01-01
期刊:
PATHOBIOLOGY OF HUMAN DISEASE: A DYNAMIC ENCYCLOPEDIA OF DISEASE MECHANISMS
影响因子:
--
作者:
Baskin, D. G.
通讯作者:
Baskin, D. G.
影响因子:
64.8
作者:
通讯作者:
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