Serum from calorie-restricted animals delays senescence and extends the lifespan of normal human fibroblasts in vitro.
Serum from calorie-restricted animals delays senescence and extends the lifespan of normal human fibroblasts in vitro.
复制标题
卡路里限制动物的血清延迟衰老,并在体外延伸正常人成纤维细胞的寿命。
DOI:
10.18632/aging.100719
复制
发表时间:
2015-03
期刊:
影响因子:
--
通讯作者:
Irusta PM
中科院分区:
文献类型:
--
作者:
de Cabo R;Liu L;Ali A;Price N;Zhang J;Wang M;Lakatta E;Irusta PM
The cumulative effects of cellular senescence and cell loss over time in various tissues and organs are considered major contributing factors to the ageing process. In various organisms, caloric restriction (CR) slows ageing and increases lifespan, at least in part, by activating nicotinamide adenine dinucleotide (NAD+)-dependent protein deacetylases of the sirtuin family. Here, we use an in vitro model of CR to study the effects of this dietary regime on replicative senescence, cellular lifespan and modulation of the SIRT1 signaling pathway in normal human diploid fibroblasts. We found that serum from calorie-restricted animals was able to delay senescence and significantly increase replicative lifespan in these cells, when compared to serum from ad libitum fed animals. These effects correlated with CR-mediated increases in SIRT1 and decreases in p53 expression levels. In addition, we show that manipulation of SIRT1 levels by either over-expression or siRNA-mediated knockdown resulted in delayed and accelerated cellular senescence, respectively. Our results demonstrate that CR can delay senescence and increase replicative lifespan of normal human diploid fibroblasts in vitro and suggest that SIRT1 plays an important role in these processes. (185 words).
登录
查看更多内容
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:
10.1126/science.1173635
发表时间:
2009-07-10
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Colman RJ;Anderson RM;Johnson SC;Kastman EK;Kosmatka KJ;Beasley TM;Allison DB;Cruzen C;Simmons HA;Kemnitz JW;Weindruch R
通讯作者:
Weindruch R
影响因子:
15.8
作者:
Civitarese AE;Carling S;Heilbronn LK;Hulver MH;Ukropcova B;Deutsch WA;Smith SR;Ravussin E;CALERIE Pennington Team
通讯作者:
CALERIE Pennington Team
影响因子:
7.8
作者:
Borradaile, Nica M.;Pickering, J. Geoffrey
通讯作者:
Pickering, J. Geoffrey
DOI:
10.1152/ajpheart.00307.2014
发表时间:
2014-08-01
影响因子:
4.8
作者:
Csiszar, Anna;Gautam, Tripti;Ungvari, Zoltan
通讯作者:
Ungvari, Zoltan