Immobilization of the Gas Signaling Molecule H
<sub>2</sub>
S by Radioisotopes: Detection, Quantification, and In Vivo Imaging
作者:Swarbhanu Sarkar、Yeong Su Ha、Nisarg Soni、Gwang Il An、Woonghee Lee、Min Hwan Kim、Phuong Tu Huynh、Heesu Ahn、Nikunj Bhatt、Yong Jin Lee、Jung Young Kim、Kwon Moo Park、Isao Ishii、Shin‐Geol Kang、Jeongsoo Yoo
DOI:10.1002/anie.201603813
日期:2016.8
Hydrogen sulfide (H2S) has multifunctional roles as a gas signaling molecule in living systems. However, the efficient detection and imaging of H2S in live animals is very challenging. Herein, we report the first radioisotope‐based immobilization technique for the detection, quantification, and in vivo imaging of endogenous H2S. Macrocyclic 64Cu complexes that instantly reacted with gaseous H2S to
硫化氢(H 2 S)在生物系统中作为气体信号分子具有多种功能。然而,活体动物中H 2 S的有效检测和成像非常具有挑战性。本文中,我们报道了第一种基于放射性同位素的固定化技术,用于内源性H 2 S的检测,定量和体内成像。大环64 Cu络合物可立即与气态H 2 S反应形成高灵敏度和选择性的不溶性64 CuS方式准备。通过薄层放射色谱法测量生物样品中的H 2 S浓度。当将64 Cu–cycln注入小鼠体内时,H升高通过Cerenkov发光和正电子发射断层扫描(PET)成像可以清晰地可视化和量化发炎爪中的2 S浓度。PET成像还可以查明大鼠心脏的毫米大小的梗死灶中H 2 S含量的增加。