The present application belongs to the technical field of biological
medicine, and particularly relates to a modulus-adjustable ROS-sensitive hydrogel loaded with active ingredients and preparation and application thereof. The present application loads macrophages and C5a
receptor antagonists into ROS-sensitive PVA-TSPBA hydrogel, which can release exogenous macrophages to achieve good
antibacterial effect when placed in a high-ROS
periodontitis microenvironment, wherein the modulus of the hydrogel is regulated to mechanically activate macrophages to improve
phagocytosis activity of the macrophages; meanwhile, the released complement C5a
receptor antagonists can eliminate the
inhibitory effect of
Porphyromonas gingivalis Pg on the bactericidal activity of macrophages, further amplify the
bactericidal effect of macrophages, and jointly achieve significant Pg clearance,
treatment effect of
periodontitis, and effects of anti-
inflammation and periodontal bone protection.