Discovery of a Potent Botulinum Neurotoxin A Inhibitor ZM299 with Effective Protections in Botulism Mice  

作　　者：Jianxin Wang Yuelin Wu Deyan Luo Chunlin Zhuang Nianzhi Ning Yanming Zhang Zhili He Jie Gao Zhanying Hong Xiguo Xv Wannian Zhang Tao Li Zhenyuan Miao Hui Wang 

机构地区：[1]State Key Laboratory of Pathogens and Biosecurity,Beijing Institute of Microbiology and Epidemiology,Beijing 100071,China [2]School of Pharmacy,Second Military Medical University,325 Guohe Road,Shanghai 200433,China

出　　处：《Chinese Journal of Chemistry》2022年第3期357-364,共8页中国化学（英文版）

基　　金：the National Natural Science Foundation of China(Nos.82173743 and U20A20136).

摘　　要：Botulinum neurotoxins serotype A(BoNT/A)is the deadliest toxins known to humans and the"Category A"agent for bioterrorism.Over the past 20 years,significant efforts have been put forth to develop effective inhibitors of BoNT/A.Unfortunately,few identified inhibitors possess noteworthy efficacy against BoNT/A in vivo.Here,we performed a high-throughput virtual screening based on the structure-based docking simulations and found a novel potent scaffold 2-thionicotinate that inhibits the BoNT/A light chain(LC).We then synthesized and optimized a novel series of 2-thionicotinate derivatives and comprehensively evaluated their activity against BoNT/A in vitro and in vivo.An optimized compound ZM299 effectively exhibits anti-BoNT/A activity in primary neurons and displayed remarkably therapeutic efficacy against BoNT/A in vivo,which could raise the survival rate of intoxicated mice to 100%(12/12)after lethal doses of BoNT/A exposures.These findings demonstrate that 2-thionicotinates is a promising scaffold for producing more effective anti-BoNT/A analogs,and compound ZM299 is worthy of further preclinical evaluation as a drug candidate for the treatment of botulism.

关 键 词：Botulinum Neurotoxin A BOTULISM Virtual screening Drug design INHIBITORS 

分 类 号：Q78[生物学—分子生物学]