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In this context, antimicrobial photodynamic therapy (aPDT) emerges as a valuable adjuvant, not only for infection eradication but also for its potential to modulate the pharmacodynamics of antimicrobials in resistant bacteria. To evaluate whether aPDT can induce a sustained increase in the susceptibility of methicillin-resistant\n                    <jats:italic>Staphylococcus aureus<\/jats:italic>\n                    (MRSA) to antibiotics, characterize a possible phenotypic memory effect, and assess whether this altered phenotype influences intracellular survival in macrophages. MRSA strains were treated with curcumin (10 \u00b5M) and blue light (450\u00a0nm, 5\u201320\u00a0J\/cm\u00b2) in sequential cycles with 8-hour intervals. The susceptibility to azithromycin (AZY), sulfamethoxazole-trimethoprim (SXT), and oxacillin (OXA) were evaluated through MIC assays. The persistence of sensitization was monitored for 96\u00a0h in the absence of selective pressure. Reapplication of aPDT cycles was performed after bacterial regrowth. In parallel, intracellular infectivity was assessed using RAW 264.7 macrophages infected with treated or untreated MRSA strains. aPDT increased MRSA susceptibility to antibiotics by up to 37-fold. This sensitization persisted for up to 96\u00a0h after treatment, even in the absence of antibiotic pressure, suggesting a phenotypic memory. Repeated cycle of aPDT after regrowth reestablished susceptibility. Treated MRSA strains also exhibited reduced intracellular survival in macrophages, indicating impaired virulence. aPDT not only enhances antibiotic susceptibility in resistant\n                    <jats:italic>S. aureus<\/jats:italic>\n                    but also promotes a reversible, phenotypic memory and reduces intracellular infectivity. These findings position aPDT as a promising strategy for controlling resistant infections by reprogramming bacterial behavior beyond immediate inactivation.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Graphical abstract<\/jats:bold>\n                  <\/jats:p>\n                  <jats:p>Photodynamic therapy, through the absorption of light by a photosensitizing molecule, produces reactive oxygen species (ROS) that enhance antibiotic susceptibility in multidrug-resistant bacterial strains by disrupting cellular defenses and promoting more effective antimicrobial effects. By combining aPDT with antibiotics, it is possible to minimize the risk of therapeutic failure. 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