有机化学 ›› 2013, Vol. 33 ›› Issue (06): 1309-1318.DOI: 10.6023/cjoc201302021 上一篇    下一篇

研究论文

铜绿假单胞菌PAO1III型分泌系统新型抑制剂的合成和生物活性研究

张成芳a, 吴小刚b, 李燕c, 梁翠荣a, 车亦舟b, 顾玲玲a, 任杰a, 胡昆a, 孙小强d, Ching-Hong Yangb, 陈新a   

  1. a 常州大学制药与生命科学学院 常州 213164;
    b Department of Biological Sciences, University of Wisconsin-Milwaukee, Wisconsin 53211, USA;
    c 中国农业大学植物病理系 北京 100193;
    d 常州大学石油化工学院 常州 213164
  • 收稿日期:2013-02-26 修回日期:2013-04-01 发布日期:2013-04-08
  • 通讯作者: 陈新, Ching-Hong Yang E-mail:xinchen@cczu.edu.cn;chyang@uwm.edu
  • 基金资助:

    国家自然科学基金(No.21272029)和江苏省“333高层次人才培养工程”资助项目.

Synthesis and Bioactivity of Novel Inhibitors for Type III Secretion System of Pseudomonas aeruginosa PAO1

Zhang Chengfanga, Wu Xiaogangb, Li Yanc, Liang Cuironga, Che Yizhoub, Gu Linglinga, Ren Jiea, Hu Kuna, Sun Xiaoqiangd, Yang Ching-Hongb, Chen Xina   

  1. a School of Pharmaceutical and Life Science, Changzhou University, Changzhou 213164;
    b Department of Biological Sciences, University of Wisconsin-Milwaukee, Wisconsin 53211, USA;
    c Department of Plant Disease, China Agricultural University, Beijing 100193;
    d School of Petrochemical Engineering, Changzhou University, Changzhou 213164
  • Received:2013-02-26 Revised:2013-04-01 Published:2013-04-08
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No.21272029) and the "333 High-level talent training program" of Jiangsu Province.

铜绿假单胞菌PAO1是一种革兰氏阴性机会性人类病原菌, 易感染免疫受损的人群.III型分泌系统(Type three secretion system, T3SS)是其主要的致病因子.T3SS抑制剂的策略是抑制铜绿假单胞菌表达及分泌毒力蛋白, 阻止其对宿主细胞的侵染.在一种已知T3SS抑制剂的结构基础上, 设计和合成了20种α-苯氧基酰胺新衍生物, 系统研究了它们的构效关系, 研究表明有5种新衍生物对铜绿假单胞菌的一个效应子编码基因exoS的表达具有明显抑制作用.其中N-(2-吡啶基甲基)-2-(2,4-二氯苯氧)-丁酰胺(5r)的活性强于已知的抑制剂MBX1641, 并具有很好的水溶性.

关键词: 铜绿假单胞菌, III型分泌系统, 抑制剂, 合成

Pseudomonas aeruginosa PAO1 is a Gram-negative, opportunistic bacterial human pathogen which infects immunocompromised individuals.The bacterium carries a type III secretion system (T3SS) as a major virulence determinant.The strategy of T3SS inhibitors is to prevent the bacterium from injecting effector proteins into the host, and causing a change in the pathophysiology of the host cells.Based on the structure of a known T3SS inhibitor of P.aeruginosa, 20 new α-phenoxyacetamide derivatives have been designed and synthesized, and the structure-activity relationship results for these new derivatives have been discussed.Five derivatives have shown strong inhibitory effect against exoS gene expression of P.aeruginosa, and among them, N-(2-pyridylmethyl)-2-(2,4-dichlorophenoxy)-butanamide (5r) has not only exhibited stronger potency than the known T3SS inhibitor, but also better solubility in aqueous solution.

Key words: Pseudomonas aeruginosa, type III secretion system, inhibitors, synthesis