The present application provides a kind of
surface modified anti-angiogenic nano-
assembly and its preparation method, the nano-
assembly of the present application is modified
grafting KK polypeptide by being grafted at the end of anti-VEGF functional polypeptide, enhance its electro-positive to promote penetration, while self-assembled with
copper ion to form stable nanoparticles, the nanoparticles can effectively treat the
inflammation reaction and vascular regeneration problem after eye alkali burn.Further by
amide reaction access penetrating
peptide and ROS
scavenger TEMPO, by regulating ROS level, inhibit the activation of NF-κB
signal pathway, so as to regulate the state of immune cells, clear
oxidative stress, reduce
tissue damage.The method of the present application is simple in operation, experimental condition is mild, and has higher
ocular surface residence time and
endocytosis efficiency, the obtained nanoparticles can be used for the treatment of eye alkali burn, has significant
curative effect, especially suitable for the
combined treatment of anti-
angiogenesis and anti-
oxidative stress, has extensive clinical application potential.