| RRC ID |
62861
|
| 著者 |
Wagatsuma A, Arakawa M, Matsumoto H, Matsuda R, Hoshino T, Mabuchi K.
|
| タイトル |
Cobalt chloride, a chemical hypoxia-mimicking agent, suppresses myoblast differentiation by downregulating myogenin expression.
|
| ジャーナル |
Mol Cell Biochem
|
| Abstract |
Cobalt chloride can create hypoxia-like state in vitro (referred to as chemical hypoxia). Several studies have suggested that chemical hypoxia may cause deleterious effects on myogenesis. The intrinsic underlying mechanisms of myoblast differentiation, however, are not fully understood. Here, we show that cobalt chloride strongly suppresses myoblast differentiation in a dose-dependent manner. The impaired myoblast differentiation is accompanied by downregulation of myogenic regulatory factor myogenin. Under chemical hypoxia, myogenin stability is decreased at mRNA and protein levels. A muscle-specific E3 ubiquitin ligase MAFbx, which can target myogenin protein for proteasomal degradation, is upregulated along with changes in Akt/Foxo and AMPK/Foxo signaling pathways. A proteasome inhibitor completely prevents cobalt chloride-mediated decrease in myogenin protein. These results suggest that cobalt chloride might modulate myogenin expression at post-transcriptional and post-translational levels, resulting in the failure of the myoblasts to differentiate into myotubes.
|
| 巻・号 |
470(1-2)
|
| ページ |
199-214
|
| 公開日 |
2020-7-1
|
| DOI |
10.1007/s11010-020-03762-2
|
| PII |
10.1007/s11010-020-03762-2
|
| PMID |
32451753
|
| MeSH |
Animals
Cell Differentiation / drug effects
Cell Hypoxia*
Cell Proliferation
Cell Survival
Cells, Cultured
Cobalt / pharmacology*
Down-Regulation*
Mice
Muscle Development
Myoblasts / cytology*
Myoblasts / drug effects
Myogenin / metabolism*
Proteasome Endopeptidase Complex / metabolism
Protein Processing, Post-Translational
RNA, Messenger / metabolism
Signal Transduction
|
| IF |
2.795
|
| リソース情報 |
| ヒト・動物細胞 |
C2C12(RCB0987) |
