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 i...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.展开更多
Dear Editor,Coronavirus disease 2019(COVID-19)is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which is a novel subset of coronavirus.To this day,the number of confirmed cases is over 500 milli...Dear Editor,Coronavirus disease 2019(COVID-19)is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which is a novel subset of coronavirus.To this day,the number of confirmed cases is over 500 million with more than 6 million deaths globally.SARSCoV-2 keeps on evolving into different variants,including Alpha,Beta,Gamma,Delta,and Omicron.展开更多
基金the National Natural Science Foundation of China(Nos.82173743 and U20A20136).
文摘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.
基金funded by the National Program on Key Research Project of China(2020YFC0860100)National Nature Funds(31870156 and 81801583).
文摘Dear Editor,Coronavirus disease 2019(COVID-19)is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which is a novel subset of coronavirus.To this day,the number of confirmed cases is over 500 million with more than 6 million deaths globally.SARSCoV-2 keeps on evolving into different variants,including Alpha,Beta,Gamma,Delta,and Omicron.
