Abstract:
:Cellular senescence is a restricting factor for regenerative therapies with somatic stem cells. We showed previously that the onset of cellular senescence inhibits the osteogenic differentiation in stem cells of the dental follicle (DFCs), although the mechanism remains elusive. Two different pathways are involved in the induction of the cellular senescence, which are driven either by the cell cycle protein P21 or by the cell cycle protein P16. In this study, we investigated the expression of cell cycle proteins in DFCs after the induction of cellular senescence. The induction of cellular senescence was proved by an increased expression of β-galactosidase and an increased population doubling time after a prolonged cell culture. Cellular senescence regulated the expression of cell cycle proteins. The expression of cell cycle protein P16 was up-regulated, which correlates with the induction of cellular senescence markers in DFCs. However, the expression of cyclin-dependent kinases (CDK)2 and 4 and the expression of the cell cycle protein P21 were successively decreased in DFCs. In conclusion, our data suggest that a P16-dependent pathway drives the induction of cellular senescence in DFCs.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Morsczeck C,Hullmann M,Reck A,Reichert TEdoi
10.1007/s11010-017-3134-6subject
Has Abstractpub_date
2018-02-01 00:00:00pages
45-52issue
1-2eissn
0300-8177issn
1573-4919pii
10.1007/s11010-017-3134-6journal_volume
439pub_type
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journal_title:Molecular and cellular biochemistry
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