Metabolic Vulnerabilities in S. aureus Biofilms
Research goal
What mechanisms drive antibiotic resistance in Staphylococcus aureus biofilms, and which metabolic pathways could be targeted to restore susceptibility?
Example overview
The proposals converge on metabolic state as a modulator of tolerance, but each needs strain-aware validation in a mature biofilm model before any translational interpretation. The ranked program deliberately keeps competing mechanisms separate, then uses perturbation, rescue, and independent-model replication to decide which should advance.
Leading hypotheses
Metabolic wake-up before vancomycin exposure
A short, non-growth-promoting metabolic pulse before vancomycin may reduce tolerance in mature S. aureus biofilms.
MazEF state predicts a tolerant biofilm subpopulation
MazEF-associated transcriptional state may identify the biofilm cells that survive bactericidal antibiotic pulses.
Matrix-restricted nutrient access creates a reversible tolerance niche
Nutrient gradients within the matrix may create a reversible low-energy niche that can be selectively disrupted.