Abstract:
:The purpose of the study was to examine mechanisms controlling cell cycle progression/arrest and differentiation of mouse C2C12 myoblasts exposed to long-chain saturated fatty acid salt, palmitate. Treatment of proliferating myoblasts with palmitate (0.1 mmol/l) markedly decreased myoblast number. Cyclin A and cyclin D1 levels decreased, whereas total p21 and p21 complexed with cyclin-dependent kinase-4 (cdk4) increased in myoblasts treated with palmitate. In cells induced to differentiation addition of palmitate augmented the level of cyclin D3, the early (myogenin) and late (α-actinin, myosin heavy chain) markers of myogenesis, and caused an increase of myotube diameter. In conclusion, exposure to palmitate inhibits proliferation of myoblasts through a decrease in cyclin A and cyclin D1 levels and an increase of p21-cdk4 complex formation; however, it promotes cell cycle exit, myogenic differentiation and myotube growth.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Grabiec K,Milewska M,Błaszczyk M,Gajewska M,Grzelkowska-Kowalczyk Kdoi
10.1002/cbin.10477subject
Has Abstractpub_date
2015-09-01 00:00:00pages
1044-52issue
9eissn
1065-6995issn
1095-8355journal_volume
39pub_type
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