FOXO3a potentiates hTERT gene expression by activating c-MYC and extends the replicative life-span of human fibroblast.
FOXO3a potentiates hTERT gene expression by activating c-MYC and extends the replicative life-span of human fibroblast.
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DOI:
10.1371/journal.pone.0101864
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Katakura Y
中科院分区:
文献类型:
--
作者:
Yamashita S;Ogawa K;Ikei T;Fujiki T;Katakura Y
In our previous studies, we reported that SIRT1 prevents cellular senescence in human fibroblast, and that SIRT1-induced inhibition of cellular senescence is due to enhanced hTERT gene expression. In this study, we investigate the molecular mechanisms behind SIRT1-induced potentiation of hTERT transcription and show that FOXO3a functions downstream of SIRT1 and prevents the induction of cellular senescence by enhancing hTERT gene expression. Furthermore, we found that FOXO3a-induced potentiation of hTERT gene expression is regulated in a c-MYC/E-box dependent manner. In addition, we found that FOXO3a binds to the novel binding element in the c-MYC promoter, and this interaction activates the transcription of the c-MYC gene. The resulting increase in c-MYC leads to higher levels of c-MYC recruited to the hTERT promoter and, in turn, activates hTERT gene expression. Taken together, this pathway might constitute the molecular basis for the anti-senescence effects of SIRT1 and FOXO3a.
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DOI:
10.1038/nrd3738
发表时间:
2012-06-01
期刊:
Nature reviews. Drug discovery
影响因子:
--
作者:
Baur JA;Ungvari Z;Minor RK;Le Couteur DG;de Cabo R
通讯作者:
de Cabo R
DOI:
10.1073/pnas.92.20.9363
发表时间:
1995-09-26
影响因子:
11.1
作者:
DIMRI, GP;LEE, XH;CAMPISI, J
通讯作者:
CAMPISI, J
影响因子:
4.4
作者:
Chandramohan, V;Jeay, S;Sonenshein, GE
通讯作者:
Sonenshein, GE
影响因子:
5.3
作者:
Delpuech, Oona;Griffiths, Beatrice;Schulze, Almut
通讯作者:
Schulze, Almut
影响因子:
19
作者:
Giannakou, ME;Partridge, L
通讯作者:
Partridge, L