Synthetic hydrogen bonding receptors as models of transacylase enzymes
摘要:
A family of synthetic receptors has been prepared containing a barbiturate binding site and an appended thiol nucleophile. These are shown to cause large accelerations in the thiolysis reactions of barbiturate active ester derivatives. The size of the acceleration is shown to depend critically on the length and flexibility of the spacer that links the thiol to the receptor.
A fluorescent τ-probe was demonstrated to quantitate ultra-trace endogenous hydrogen sulfide (H2Sn) within cells and zebrafish through changes of fluorescence lifetime.
FLUORESCENT PROBES FOR DETECTING HYDROGEN POLYSULFIDES
申请人:Washington State University
公开号:US20180074068A1
公开(公告)日:2018-03-15
Reactive sulfur species have been recognized as an important regulator in redox biology, wherein the reactive sulfur species have been shown to be active in tumor suppressors, ion channels, and transcription factors. The disclosed invention is a novel composition of matter that allows for the detection of H
2
S and H
2
S
n
species in living cells. These novel compositions represent significant progress in the field of chemical, H
2
S and H
2
S
n
probes as they have both been successfully applied in the visualization sulfur species in living systems.
A Single Fluorescent Probe to Visualize Hydrogen Sulfide and Hydrogen Polysulfides with Different Fluorescence Signals
作者:Wei Chen、Armando Pacheco、Yoko Takano、Jacob J. Day、Kenjiro Hanaoka、Ming Xian
DOI:10.1002/anie.201604892
日期:2016.8.16
between H2S and H2Sn, it is highly desirable to develop single fluorescentprobes which enable dual‐channel discrimination between H2S and H2Sn. Herein, we report the rationaldesign, synthesis, and evaluation of the first dual‐detection fluorescentprobe DDP‐1 that can visualize H2S and H2Sn with different fluorescence signals. The probe showed high selectivity and sensitivity to H2S and H2Sn in aqueous
硫化氢(H 2 S)和多硫化氢(H 2 S n,n > 1)是许多生理过程的内源性调节剂。为了更好地理解H 2 S和H 2 S n之间的共生关系和细胞串扰,非常需要开发能够在H 2 S和H 2 S n之间进行双通道区分的单荧光探针。在此,我们报告了第一个可以可视化H 2 S和H 2 S n的双重检测荧光探针DDP-1的合理设计,合成和评估。具有不同的荧光信号。该探针在水性介质和细胞中显示出对H 2 S和H 2 S n的高选择性和敏感性。
A bioluminescent probe for imaging endogenous hydrogen polysulfides in live cells and a murine model of bacterial infection
A turn-on bioluminescent probe (BP-PS) for bioimaging endogenous H2Sn in live cells and a murine model of bacterial infection was, for the first time, reported.
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.