p21 both attenuates and drives senescence and aging in BubR1 progeroid mice.
p21 both attenuates and drives senescence and aging in BubR1 progeroid mice.
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DOI:
10.1016/j.celrep.2013.03.028
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发表时间:
2013-04-25
期刊:
影响因子:
8.8
通讯作者:
van Deursen JM
中科院分区:
文献类型:
--
作者:
Baker DJ;Weaver RL;van Deursen JM
BubR1 insufficiency occurs with natural aging and induces progeroid phenotypes in both mice and children with mosaic variegated aneuploidy syndrome. In response to BubR1 insufficiency, skeletal muscle, fat, and lens tissue engage p19Arf to attenuate senescence and age-related deterioration. Here, we address how p19Arf exerts this caretaker role using BubR1 progeroid mice lacking p53 or its transcriptional target p21. We show that p53 delays functional decline of skeletal muscle and fat in a p21-dependent fashion by inhibiting p16Ink4a-mediated senescence of progenitor cells. Strikingly, p53 also attenuates the formation of cataractous lenses, but here its antiaging effect is p21 independent, as we found p21 to promote senescence of lens epithelial cells and cataract formation. Together, these results demonstrate that p53 counteracts tissue destruction in response to BubR1 insufficiency through diverse mechanisms and uncover a causal link between senescence of the progenitor cell compartment and age-related dysfunction.
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影响因子:
5.1
作者:
通讯作者:
--
影响因子:
14.5
作者:
El-Deiry, WS
通讯作者:
El-Deiry, WS
影响因子:
4
作者:
Kirkwood, TBL
通讯作者:
Kirkwood, TBL
影响因子:
11.8
作者:
Conboy, IM;Rando, TA
通讯作者:
Rando, TA
DOI:
10.1083/jcb.200507081
发表时间:
2006-02-13
期刊:
The Journal of cell biology
影响因子:
--
作者:
Baker DJ;Jeganathan KB;Malureanu L;Perez-Terzic C;Terzic A;van Deursen JM
通讯作者:
van Deursen JM