Novel small molecule inhibitors of LpxC for multi-drug resistant Gram-negative bacteria.

DESCRIPTION provided by applicant Infections caused by antibiotic resistant bacteria continue to be a growing challenge in the community and hospital setting A group of bacteria known as the andquot ESKAPEandquot pathogens Enterococcus faecium Staphylococcus aureus Klebsiella pneumonia Acinetobacter baumannii Pseudomonas aeruginosa and Enterobacter species cause the majority of hospital infections The growing need for novel antibacterial drugs has been well highlighted by agencies such as the Infectious Diseases Society of America IDSA U S Congress FDA CDC and NIH Novel antibacterials that inhibit unexploited targets are desperately needed to address untreatable infections that arise from drug resistant pathogens LpxC UDP O R hydroxymyristoyl GlcNAc deacetylase has emerged as an attractive target for antibacterial development as it catalyzes the committed step of lipid A biosynthesis required for virtually all Gram negative bacteria Bacteria lacking lipid A are not viable and mutants with reduced lipid A are hypersensitive to antibacterials Therefore a potent inhibitor of LpxC will be effective at treating Gram negative infections Forge Therapeutics is utilizing a novel chemistry approach to target LpxC Our approach is differentiated from existing efforts in industry and academia because Forge employs a unique method to identify optimal metal binding pharmacophores MBPs that have a specific affinity for the metalloenzyme active site of interest Traditional medicinal chemistry efforts shy away from different MBPs allowing Forge to pioneer this new approach making gains in a field that has struggled to tackle the challenges associated with metalloprotein inhibition The unparalleled know how possessed by our scientific leadership team founders and experienced consultants will allow Forge to rapidly and efficiently advance our novel molecules from discovery to validation Phase II Strategy After completion of the Specific Aims in this Phase I proposal the goals for Phase II will focus on a additional optimization and in vitro studies b further MIC screens against multiple strains and human metalloprotein cross reactivity screens and c resistance mutant generation and spontaneous mutant frequency Finally of the compounds that advance through this round of in vitro testing we will select a set to be analyzed in vivo using a validated rodent efficacy model PUBLIC HEALTH RELEVANCE Drug resistant Gram negative bacteria pose a persistent health threat and are a major cause of mortality and morbidity throughout the world Novel antibacterials that inhibit unexploited targets are desperately needed to address untreatable infections that arise from drug resistant pathogens Forge Therapeutics will use an innovative approach to address the challenge of antibiotic resistance by discovering novel inhibitors of bacterial metalloenzyme LpxC