| RRC ID |
54807
|
| 著者 |
Yang X, Wang G, Wang Y, Zhou J, Yuan H, Li X, Liu Y, Wang B.
|
| タイトル |
Histone demethylase KDM7A reciprocally regulates adipogenic and osteogenic differentiation via regulation of C/EBPα and canonical Wnt signalling.
|
| ジャーナル |
J Cell Mol Med
|
| Abstract |
Recent emerging evidences revealed that epigenetic methylation of histone and DNA regulates the lineage commitment of mesenchymal progenitor cells. This study was undertaken to delineate the actions of histone lysine demethylase 7A (KDM7A) on osteogenic and adipogenic differentiation. Kdm7a expression was up-regulated in primary marrow stromal cells and established stromal ST2 line after adipogenic and osteogenic treatment. Silencing of endogenous Kdm7a in the cells blocked adipogenic differentiation whereas promoted osteogenic differentiation. Conversely, overexpression of wild-type Kdm7a in the progenitor cells enhanced adipogenic differentiation whereas inhibited osteogenic differentiation. However, the effect of KDM7A on cell differentiation was largely attenuated when the point mutation was made that abolishes enzymatic activity of KDM7A. Mechanism investigations revealed that silencing of Kdm7a down-regulated the expression of the CCAAT/enhancer binding protein α (C/EBPα) and secreted frizzled-related protein 1 (Sfrp1). Chromatin immunoprecipitation (ChIP) assay revealed that KDM7A directly binds to the promoters of C/EBPα and Sfrp1 and removes the histone methylation marks H3K9me2 and H3K27me2. Furthermore, silencing of Kdm7a activated canonical Wnt signalling. Thereafter, activation of canonical Wnt signalling through silencing of Sfrp1 in ST2 attenuated the stimulation of adipogenic differentiation and inhibition of osteogenic differentiation by KDM7A. Our study suggests that KDM7A balances adipogenic and osteogenic differentiation from progenitor cells through epigenetic control of C/EBPα and canonical Wnt signalling and implicates that control of KDM7A action has an epigenetic perspective of curtailing metabolic disorders like osteoporosis.
|
| 巻・号 |
23(3)
|
| ページ |
2149-2162
|
| 公開日 |
2019-3-1
|
| DOI |
10.1111/jcmm.14126
|
| PMID |
30614617
|
| PMC |
PMC6378189
|
| MeSH |
Adipocytes / cytology
Adipocytes / metabolism
Adipogenesis / genetics*
Animals
CCAAT-Enhancer-Binding Protein-alpha / genetics*
CCAAT-Enhancer-Binding Protein-alpha / metabolism
Cell Differentiation / genetics*
Cell Line
Cells, Cultured
Gene Expression
Jumonji Domain-Containing Histone Demethylases / genetics*
Jumonji Domain-Containing Histone Demethylases / metabolism
Mesenchymal Stem Cells / metabolism
Mice, Inbred C57BL
Osteoblasts / cytology
Osteoblasts / metabolism
Osteogenesis / genetics*
RNA Interference
Wnt Signaling Pathway / genetics*
|
| IF |
4.658
|
| 引用数 |
5
|
| リソース情報 |
| ヒト・動物細胞 |
ST2(RCB0224) |
