The programmed delivery system promoted osteogenic mineralization in an inflammatory environment in vitro. (A) Images of immunofluorescence staining showing the expression of Runx2 of BMSCs (n = 3). (B) Corresponding quantitative results (n = 3). (C) Osteogenic gene expression in BMSCs, analyzed by qRT-PCR (n = 3). (D) Representative images and quantitative analysis of alkaline phosphatase staining (n = 3). (E) Western blot of Col I, Runx2, OCN, and OPN expression in BMSCs and statistical analysis (n = 3). ∗P < 0.05, ∗∗P < 0.01 and ∗∗∗P < 0.001, compared with the blank group.