The invention discloses an anti-inflammatory osteogenesis-promoting
titanium-based
implant which comprises a
titanium base material, a TiO2
nanotube array layer is constructed on the surface of the
titanium substrate in situ; iL-4 is loaded in the TiO2
nanotube array layer, and the surface of the TiO2
nanotube array layer is grafted with a gate molecule mPEG2000-PLGLAL-(PEG4)-C. The invention further discloses a preparation method of the TiO2
nanotube array. The anti-inflammatory osteogenesis-promoting titanium-based
implant can respond to MMP concentration change of a surrounding microenvironment so as to regulate and control the release rate of IL-4, in the early stage of
bone healing, IL-4 is slowly released, M1 macrophages are dominant, a short and moderate inflammatory reaction is kept, along with response to MMP in the microenvironment, IL-4 is rapidly released, M1 polarization is inhibited, and the osteogenesis-promoting titanium-based
implant has the advantages of being good in anti-inflammatory effect and capable of promoting osteogenesis. And
inflammation is eliminated in time, M2 polarization is promoted, wound repair is accelerated,
osseointegration is further promoted, dynamic regulation of immune response is realized, and a new strategy is provided for promoting
bone tissue regeneration through
immune regulation.