The invention discloses a
glucose responsive composite material as well as a preparation method and application thereof. The
composite material sequentially comprises
porous metal, a polydopamine layer and a mesoporous
silicon dioxide
coating from inside to outside, the
porous metal is coated with the polydopamine layer, the polydopamine layer is coated with the mesoporous
silicon dioxide
coating, and preparation raw materials of the mesoporous
silicon dioxide
coating comprise aminated mesoporous
silicon dioxide,
aspirin, 4-carboxyphenylboronic acid and
sodium alginate. The
composite material disclosed by the invention has
blood sugar concentration dual-mode response capability,
aspirin is suddenly released in a hyperglycemia environment, up-regulation expression of anti-
inflammatory factors is remarkably promoted, and an anti-inflammatory effect is dominated; in a
normal blood glucose environment,
aspirin is slowly released, and the expression of osteogenic factors is remarkably up-regulated, so that osteogenic differentiation is promoted as a leading effect; the dual-mode response realizes accurate regulation and control of ASP dosage, organically combines
bone formation promotion and anti-inflammatory functions, and provides a brand new solution for patients with bone defects, especially patients with bone defects caused by
diabetes mellitus.