Structure-Based Rational Design of Novel Inhibitors Against Fructose-1,6-Bisphosphate Aldolase from <i>Candida albicans</i>
作者:Xinya Han、Xiuyun Zhu、Zongqin Hong、Lin Wei、Yanliang Ren、Fen Wan、Shuaihua Zhu、Hao Peng、Li Guo、Li Rao、Lingling Feng、Jian Wan
DOI:10.1021/acs.jcim.6b00763
日期:2017.6.26
activities (MIC80 < 0.0625 μg/mL) against resistant Candida strains, which are resistant to azoles drugs. The probable binding modes between 3g and the active site of Ca-FBA-II have been proposed by using the DOX (docking, ONIOM, and XO) strategy. To our knowledge, no FBA-II inhibitors with antifungal activities against wild type and resistant strains from Candida were reported previously. The positive results
II类果糖-1,6-二磷酸醛缩酶(FBA-II)是有吸引力的新靶标,可用于发现对抗侵袭性真菌感染的药物,因为它们在动物和高等植物中均不存在。尽管已报道了几种FBA-II抑制剂,但到目前为止,这些抑制剂均未显示出抗真菌作用。在这项研究中,通过联合使用基于分子对接的虚拟筛选的特定方案,准确的结合构象评估策略,合理设计了几种具有有效抗真菌作用的白色念珠菌FBA-II新型抑制剂(Ca-FBA-II),合成和酶促测定。酶促测定表明,化合物3c,3e – g,3j和3k对Ca-FBA-II具有高抑制活性(IC 50<10μM),最有潜力的抑制剂是3g,IC 50值为2.7μM。重要的是,化合物3f,3g和3l不仅具有对Ca-FBA-II的高度抑制作用,而且还具有对光滑毛状线虫的适度抗真菌活性(MIC 80 = 4–64μg/ mL)。化合物3g,3l和3k与氟康唑(8μg/ mL)结合显示了对耐药念珠菌菌株的显着协同抗真菌活性(MIC