Inhibitors for the bacterial ectonucleotidase Lp1NTPDase from Legionella pneumophila
作者:Amelie Fiene、Younis Baqi、Enas M. Malik、Patrice Newton、Wenjin Li、Sang-Yong Lee、Elizabeth L. Hartland、Christa E. Müller
DOI:10.1016/j.bmc.2016.07.027
日期:2016.9
catalyzing the hydrolysis of ATP to ADP and ADP to AMP. Its activity is believed to contribute to the virulence of Legionella pneumophila. Therefore Lp1NTPDase inhibitors are considered as novel antibacterial drugs. However, only weakly potent compounds are available so far. In the present study, a capillary electrophoresis (CE)-based enzyme assay for monitoring the Lp1NTPDase activity was established. The
嗜肺军团菌是军团菌属的一种好氧性革兰氏阴性细菌,它是军团菌病的主要病原体。最近,鉴定了一种来自嗜肺乳杆菌的核苷三磷酸二磷酸水解酶(NTPDase),并将其称为Lp1NTPDase。它被发现是哺乳动物NTPDase的结构和功能同源物,可催化ATP水解为ADP和ADP水解为AMP。据信其活性有助于肺炎军团菌的毒性。因此,Lp1NTPDase抑制剂被认为是新型抗菌药物。但是,到目前为止,只有弱效化合物可用。在本研究中,建立了用于监测Lp1NTPDase活性的基于毛细管电泳(CE)的酶法。酶促反应在试管中进行,然后通过CE分离底物和产物,随后通过UV分析进行定量。在对该酶进行动力学表征后,研究了一系列与蒽醌染料活性蓝2(一种非选择性ecto-NTPDase抑制剂)结构相关的1-氨基-4-芳基(烷基)基氨基-2-磺基蒽醌衍生物的抑制活性。使用基于CE的酶测定法检测Lp1NTPDase的表达。在1-氨