A Cinchona Alkaloid Antibiotic That Appears To Target ATP Synthase in <i>Streptococcus pneumoniae</i>
作者:Xu Wang、Yuna Zeng、Li Sheng、Peter Larson、Xue Liu、Xiaowen Zou、Shufang Wang、Kaijing Guo、Chen Ma、Gang Zhang、Huaqing Cui、David M. Ferguson、Yan Li、Jingren Zhang、Courtney C. Aldrich
DOI:10.1021/acs.jmedchem.8b01353
日期:2019.3.14
Optochin, a cinchona alkaloid derivative discovered over 100 years ago, possesses highly selective antibacterial activity toward Streptococcus pneumoniae. Pneumococcal disease remains the leading source of bacterial pneumonia and meningitis worldwide. The structure-activity relationships of optochin were examined through modification to both the quinoline and quinuclidine subunits, which led to the
Optochin是一种100多年前发现的金鸡纳生物碱衍生物,对肺炎链球菌具有高度选择性的抗菌活性。肺炎球菌疾病仍然是全球细菌性肺炎和脑膜炎的主要来源。通过修饰喹啉和奎尼丁亚基,检查了Optochin的结构-活性关系,从而鉴定出具有显着改善的活性的类似物48。耐药性和分子模型研究表明,48个可能与保守的谷氨酸52离子结合位点附近的ATP合酶的c环结合,而机理研究表明48个引起胞质酸化。对Optochin和48的初步药代动力学和药物代谢分析表明,这些奎宁类似物的局限性已被迅速清除,导致通过奎宁环的羟基化侧基和喹啉的O-脱烷基化导致体内暴露不良。总的来说,这些结果为进一步发展48奠定了基础,并突出了ATP合酶作为抗生素开发的有希望的目标。