Protein extraction and Western blot analysis were performed referring to the literature step by step. Antibody: SIRT1, Runx2, OPN, OCN (1:1000, diluted, ab109520, abcam, USA), GAPDH (1:1000, diluted, ab8245, abcam, USA). The polyclonal goat anti-rabbit antibody (Cell Signaling Technology, MA, USA) and Western blotting detection system (Odyssey, LI-COR, LN, USA) were used for detection[22 (link)].