Polynucleotide HPTTM-Based Hydrogels Exhibit Scavenging Activity Against Reactive Oxygen Species

This study investigates the scavenger activity of Polynucleotide High Purification Technology (PN HPT^TM), alone or in combination with hyaluronic acid (PN HPT^TM + HA) against oxidative stress induced by hydrogen peroxide (H₂O₂). Since oxidative stress is implicated in numerous pathological conditions, identifying effective antioxidants is crucial for therapeutic development. We employed a cell-free fluorometric assay based on Calcein-AM, a fluorescence probe whose signal increases proportionally to the generation of reactive oxygen species (ROS), to evaluate the ability to neutralize ROS under varying oxidative stress conditions and determine the dose- and time-dependent effects of these compounds. PN HPT^TM, HA, and PN HPT^TM + HA were tested at various concentrations over multiple time points. Our results demonstrated that all tested treatments significantly lowered ROS levels compared to the untreated control. Notably, the PN HPT^TM -based compounds exhibited robust scavenging activity, with PN HPT^TM + HA displaying the strongest and most consistent ROS-neutralizing effect across all concentrations and time points. This enhanced performance suggests a synergistic interaction between PN HPT^TM and HA, potentially due to complementary mechanisms of free radical scavenging and structural stabilization. These findings highlight the potential of PN HPT^TM and PN HPT^TM + HA as effective antioxidative agents, offering potential for therapeutic applications where oxidative stress is central, including wound healing and tissue regeneration.