An "in control" hyaluronic acid nanogel with light-cleavable for rational use of antibiotics

The consequences caused by bacterial resistance are becoming more and more serious. The rate of antibiotic development is far behind the rate of bacterial resistance, so it is urgent to develop a new drug system. In this study, photoresponsive nanogels based on hyaluronic acid were prepared and loaded with ciprofloxacin as a model molecule. The results showed that the nanogels had the advantages of high stability and good cytocompatibility. The inhibition effect of drug-loaded nanogels after light irradiation on the growth of Staphylococcus aureus and Salmonella typhimurium was significantly better than that before light irradiation, and ciprofloxacin could be released on demand and in control. This strategy is of great significance to reduce the unnecessary use of antibiotics and weaken bacterial resistance.