"Results found that lack of GCN5 decreased the osteogenic differentiation of periodontal ligament stem cells (PDLSCs) and overexpression of GCN5 rescued osteogenic deficiency in PDLSCs from periodontitis patients. Mechanistically GCN5 regulated DKK1 expression by acetylation of Histone H3 lysine 9 (H3K9) and Histone H3 lysine 14 (H3K14) to regulate Wnt/beta catenin pathway of PDLSCs."xsd:string