Dietary restriction and mitochondrial function link replicative and chronological aging in Saccharomyces cerevisiae.

Dietary restriction and mitochondrial function link replicative and chronological aging in Saccharomyces cerevisiae.
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DOI:
10.1016/j.exger.2012.12.001
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发表时间:
2013-10
影响因子:
3.9
通讯作者:
Kaeberlein, Matt
Kaeberlein, Matt
中科院分区:
医学2区
文献类型:
--
作者:
Delaney, Joe R.;Murakami, Christopher;Chou, Annie;Carr, Daniel;Schleit, Jennifer;Sutphin, George L.;An, Elroy H.;Castanza, Anthony S.;Fletcher, Marissa;Goswami, Sarani;Higgins, Sean;Holmberg, Mollie;Hui, Jessica;Jelic, Monika;Jeong, Ki-Soo;Kim, Jin R.;Klum, Shannon;Liao, Eric;Lin, Michael S.;Lo, Winston;Miller, Hillary;Moller, Richard;Peng, Zhao J.;Pollard, Tom;Pradeep, Prarthana;Pruett, Dillon;Rai, Dilreet;Ros, Vanessa;Schuster, Alex;Singh, Minnie;Spector, Benjamin L.;Wende, Helen Vander;Wang, Adrienne M.;Wasko, Brian M.;Olsen, Brady;Kaeberlein, Matt

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发芽酵母细胞的时间老化通过未知的机制导致后续复制寿命的缩短。在这里,我们表明,在时间上老化的饮食限制延迟了随后的复制寿命的减少,至少在时间上的23天。我们进一步表明,在出生26天的对照组中,线粒体膜电位最低的单个细胞具有最长的后续复制寿命。这些观察表明,限制饮食调节了酵母中连接时间和复制衰老的共同分子机制,并表明线粒体功能在这一过程中起着关键作用。
Chronological aging of budding yeast cells results in a reduction in subsequent replicative life span through unknown mechanisms. Here we show that dietary restriction during chronological aging delays the reduction in subsequent replicative life span up to at least 23 days of chronological age. We further show that among the viable portion of the control population aged 26 days, individual cells with the lowest mitochondrial membrane potential have the longest subsequent replicative lifespan. These observations demonstrate that dietary restriction modulates a common molecular mechanism linking chronological and replicative aging in yeast and indicate a critical role for mitochondrial function in this process.
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