Dietary restriction enhances germline stem cell maintenance.

Dietary restriction enhances germline stem cell maintenance.
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DOI:
10.1111/j.1474-9726.2010.00602.x
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发表时间:
2010-10
期刊:
影响因子:
7.8
通讯作者:
Jones DL
Jones DL
中科院分区:
生物学1区
文献类型:
--
作者:
Mair W;McLeod CJ;Wang L;Jones DL

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饮食限制(DR)延长了从酵母到灵长类动物的寿命,使组织保持年轻状态,并延缓生殖衰老。然而,人们对这种情况发生的机制知之甚少。在这里,我们证明了,在延长寿命的同时,DR减轻了果蝇雄性生殖系干细胞(GSC)数量的年龄相关性下降。这些数据支持一种模型,通过该模型,DR加强对GSC的维持,以延长处于不利营养条件下的动物的繁殖期。这是DR维持成人干细胞库的第一个例子,并表明DR可能通过一种潜在的机制延缓高等生物组织的衰老。
Dietary restriction (DR) increases lifespan in species ranging from yeast to primates, maintaining tissues in a youthful state and delaying reproductive senescence. However, little is known about the mechanisms by which this occurs. Here we demonstrate that, concurrent with extending lifespan, DR attenuates the age-related decline in male germline stem cell (GSC) number in Drosophila. These data support a model whereby DR enhances maintenance of GSCs to extend the reproductive period of animals subjected to adverse nutritional conditions. This represents the first example of DR maintaining an adult stem cell pool and suggests a potential mechanism by which DR might delay aging in the tissues of higher organisms.
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