HDAC6 regulates dental mesenchymal stem cells and osteoclast differentiation

• Main Authors: Cao, J.K (Author), Feng, J. (Author), Shi, Z.Y (Author), Wang, Y. (Author)
• Format: Article
• Language: English
• Published: BioMed Central Ltd. 2018
• Subjects: adult; Adult; cell culture; cell differentiation; Cell Differentiation; Cells, Cultured; cytology; Dental mesenchymal stem cell; Dental Pulp; gene knockdown; Gene Knockdown Techniques; gene vector; genetic transfection; Genetic Vectors; genetics; HDAC6; HDAC6 protein, human; histone deacetylase 6; Histone Deacetylase 6; human; Humans; Lentivirus; mesenchymal stem cell; Mesenchymal Stem Cells; metabolism; Odontogenic differentiation; osteoclast; Osteoclastogenesis; Osteoclasts; physiology; real time polymerase chain reaction; Real-Time Polymerase Chain Reaction; RNA, Small Interfering; small interfering RNA; tooth pulp; Transfection
• Online Access: View Fulltext in Publisher

 Background: Dental and periodontal tissue development is a complicated process involving a finely regulated network of communication among various cell types. Understanding the mechanisms involved in regulating dental mesenchymal stem cells (MSCs) and osteoclast cell differentiation is critical. However, it is still unclear whether histone deacetylase HDAC6 is involved in dental MSCs fate determination and osteoclast differentiation. Methods: We used shRNA and siRNA knockdown to explore the role of HDAC6 in dental MSCs odontogenic differentiation and osteoclasts maturation. Results: Based on HDAC6 knockdown dental MSCs, our data suggest that HDAC6 knockdown significantly increases alkaline phosphate activity and mineralized nodules formation. Additionally, mRNA expression of odontogenic marker genes (OSX, OCN, and OPN) was induced by HDAC6 knockdown. By using HDAC6 siRNA, we knocked down HDAC6 in osteoclast precursor RAW 264.7 cells. Our data suggests that HDAC6 knockdown significantly inhibited osteoclasts differentiation. Additionally, mRNA expression of osteoclast marker genes Trap, Mmp9, and Ctsk was decreased by HDAC6 knockdown. Conclusions: Our study demonstrated that HDAC6 plays an important role in regulating dental MSCs and osteoclasts differentiation. © 2018 The Author(s).