Artificial Intelligence-Integrated Proteome-Wide Target Prioritization for Drug Discovery against Multidrug-Resistant Neisseria gonorrhoeae
Abstract
Neisseria gonorrhoeae causes ∼82.4 million infections annually and is rapidly approaching an untreatable status. The pathogen has developed resistance to every antibiotic class introduced since the sulfonamide era. Ceftriaxone, the last WHO- and CDC-recommended empirical therapy, is now compromised by high-level resistance in extensively drug-resistant lineages reported across multiple continents. No licensed vaccine exists, and no antibiotic with a novel mechanism has been introduced for this pathogen in over 40 years. Conventional drug discovery is too slow and insufficiently resistance-aware to address this escalating threat. In this review, we examine in silico proteome-wide target fishing as a rapid, systematic approach. The approach applies six biologically informed filters to the N. gonorrhoeae core proteome: core-genome definition, host-homology exclusion, essentiality screening, metabolic chokepoint identification, subcellular localization, and resistance-aware prioritization. Across data sets spanning 12–69 clinical strains, this pipeline reduces 2000–12,300 protein-coding sequences to 12–30 high-confidence targets. An integrated artificial intelligence (AI)/machine learning (ML) scoring layer further ranks candidates using sequence features, AlphaFold2 structures, protein–protein interaction networks, and genotype–phenotype data from ∼20,000 clinical isolates. Five targets showed consistent cross-study prioritization: LpxC, MurA, FabI, DapD, and NGFG_RS03485. Of…
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