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Tissue Oxygenation within Diabetic Wounds can be Monitored Using Difluoroboron β– Diketonate Polylactide Nanoparticles

Roughly 6.5 million diabetic patients in the United States suffer from chronic wounds that exhibit impaired healing response1. These wounds often do not respond to standard treatment due to insufficient oxygenation in the wound bed2. Given the heterogeneity of oxygen levels in wounds and the importance of oxygen in tissue repair, it is compelling to develop a reliable way to non‐invasively monitor oxygen levels within chronic wounds over time. Previously, we demonstrated the ability of topically‐delivered BF2nbm(I)PLA boron dye nanoparticles (BNPs) that phosphoresce differentially at varying oxygen levels, to provide a spatial map of oxygen levels throughout the wound bed of a murine full‐thickness cutaneous wound3. The objective of this work is to validate the ability of BNP imaging to detect impaired tissue oxygenation during wound healing in diabetic individuals compared to healthy individuals.