Open AccessStem cell contributions to cementoblast differentiation in healthy periodontal ligament and periodontitis
Author(s) -
Zhao Jing,
Faure Louis,
Adameyko Igor,
Sharpe Paul T.
Publication year - 2021
Publication title -
stem cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.159
H-Index - 229
eISSN - 1549-4918
pISSN - 1066-5099
DOI - 10.1002/stem.3288
Subject(s) - cementoblast , biology , cementum , periodontal fiber , stem cell , microbiology and biotechnology , cd90 , cellular differentiation , periodontal ligament stem cells , mesenchymal stem cell , periodontitis , immunology , pathology , medicine , dentistry , cd34 , biochemistry , alkaline phosphatase , dentin , gene , enzyme
Loss of tissue attachment as a consequence of bacterial infection and inflammation represents the main therapeutic target for the treatment of periodontitis. Cementoblasts, the cells that produce the mineralized tissue, cementum, that is responsible for connecting the soft periodontal tissue to the tooth, are a key cell type for maintaining/restoring tissue attachment following disease. Here, we identify two distinct stem cell populations that contribute to cementoblast differentiation at different times. During postnatal development, cementoblasts are formed from perivascular‐derived cells expressing CD90 and perivascular‐associated cells that express Axin2. During adult homeostasis, only Wnt‐responsive Axin2+ cells form cementoblasts but following experimental induction of periodontal disease, CD90+ cells become the main source of cementoblasts. We thus show that different populations of resident stem cells are mobilized at different times and during disease to generate precursors for cementoblast differentiation and thus provide an insight into the targeting cells resident cells for novel therapeutic approaches. The differentiation of these stem cells into cementoblasts is however inhibited by bacterial products such as lipopolysaccharides, emphasizing that regeneration of periodontal ligament soft tissue and restoration of attachment will require a multipronged approach.