Fluorescent Triazole Urea Activity‐Based Probes for the Single‐Cell Phenotypic Characterization of
<i>Staphylococcus aureus</i>
作者:Linhai Chen、Laura J. Keller、Edward Cordasco、Matthew Bogyo、Christian S. Lentz
DOI:10.1002/anie.201900511
日期:2019.4.16
Phenotypically distinct cellular (sub)populations are clinically relevant for the virulence and antibiotic resistance of a bacterial pathogen, but functionally different cells are usually indistinguishable from each other. Herein, we introduce fluorescent activity-based probes as chemical tools for the single-cell phenotypic characterization of enzyme activity levels in Staphylococcus aureus. We screened
表型上不同的细胞(亚群)在临床上与细菌病原体的毒力和抗生素抗性有关,但功能上不同的细胞通常彼此无法区分。在这里,我们介绍了基于荧光活性的探针作为金黄色葡萄球菌中酶活性水平的单细胞表型表征的化学工具。我们筛选了1,2,3-三唑脲文库,以鉴定金黄色葡萄球菌中结合氟膦酸酯的丝氨酸水解酶和脂肪酶的选择性抑制剂,并合成了基于目标选择性活性的探针。用这些探针进行的分子成像和基于活性的蛋白质谱分析研究揭示了该酶家族内的动态网络,涉及特定家族成员的补偿性调节和暴露的单细胞表型异质性。