The jamming-to-unjamming transition state of a confluent human epithelial monolayer determines the colonisation and invasion efficiency of colistin-resistant Acinetobacter baumannii strains carrying LPS modifications (lpxA/lpxC/lpxD knockouts or lipid A modifications via pmrAB/phoPQ). Mechanistic basis: (1) unjammed epithelial monolayers exhibit increased junctional remodelling and transient intercellular gaps that A. baumannii is known to exploit for paracellular invasion; (2) LPS-modified colistin-resistant strains have altered outer membrane surface hydrophobicity and charge that changes adhesion to epithelial junctions undergoing remodelling during unjamming. Testable prediction with direction: isogenic pairs (wild-type versus pmrB-overexpressing colistin-resistant mutants — avoiding fragile lpx-null strains) co-cultured with epithelial monolayers across a jamming state gradient tuned by cell density and substrate stiffness (polyacrylamide gels 0.5-40 kPa). Prediction: unjammed monolayers will show higher invasion rates for LPS-modified strains than wild-type due to increased junctional gap availability combined with altered hydrophobic adhesion of the modified outer membrane. Jamming state is independently verified by MSD power-law exponent of cell trajectories. Capsule upregulation is controlled for using isogenic capsule-expression-matched strain pairs. RAB5A-based jamming manipulation is excluded in favour of density/stiffness control to avoid confounding endocytic pathways. Cross-domain: A. baumannii outer membrane biophysics, epithelial jamming transition physics, host-pathogen adhesion mechanics.
Adversarial Debate Score
56% survival rate under critique
Expert panel critique
Independent views, each critiquing the hypothesis on its own — the score rewards genuine disagreement and discounts consensus.
The strict critic was recused on this topic; an adversarial reviewer stood in to keep scrutiny intact.
Supporting Research Papers
- Identification of Evolutionary Trade-Offs Associated with High-Level Colistin Resistance in Acinetobacter baumannii
Colistin (COL) belongs to the polymyxin group of drugs which possesses a positive charge and interacts with lipopolysaccharide (LPS) of Gram-negative bacterial outer membrane. Additionally, it can pen...
- Identification of Evolutionary Trade‐Offs Associated With High‐Level Colistin Resistance in Acinetobacter baumannii
Colistin (COL) belongs to the polymyxin group of drugs, which possesses a positive charge and interacts with lipopolysaccharide (LPS) of Gram‐negative bacterial outer membranes. Acinetobacter baumanni...
- The evolutionary trade-offs in phage-resistant Klebsiella pneumoniae entail cross-phage sensitization and loss of multidrug resistance.
Bacteriophage therapy is currently being evaluated as a critical complement to traditional antibiotic treatment. However, the emergence of phage resistance is perceived as a major hurdle to the sustai...
- Deformation of Bacterial Cell Membranes by Action of Metal Surface under Plasmon Resonance Condition
This paper is devoted to studies of the mechanical deformation of the S. aureus cell wall. The bacterium is modelled as a thin elastic membrane containing cytoplasm, which is treated as an incompressi...
- Pleotropic Effects of Antibiotic Resistance Mutation
Antibiotic resistance mutations (AMRs) alter the phenotypic (physical) characteristics of an organism, which may result in enhanced fitness under antibiotic stress. However, these mutations often infe...
Computational Validation
Epithelial jamming state may influence A. baumannii invasion efficiency.
Method: literature_meta · Result: inconclusive · Confidence: 60%
Formal Verification
Z3 checks whether the hypothesis is internally consistent, not whether it is empirically true.