Genetic dissection of dietary restriction in mice supports the metabolic efficiency model of life extension.

Genetic dissection of dietary restriction in mice supports the metabolic efficiency model of life extension.
复制标题

DOI:
10.1016/j.exger.2010.04.008
复制
发表时间:
2010-09
影响因子:
3.9
通讯作者:
Johnson, Thomas E.
Johnson, Thomas E.
中科院分区:
医学2区
文献类型:
--
作者:
Rikke, Brad A.;Liao, Chen-Yu;McQueen, Matthew B.;Nelson, James F.;Johnson, Thomas E.

文献摘要

参考文献

被引文献

相似文献

几十年来,饮食限制(DR)一直被用来延缓啮齿类动物的衰老,但其作用机制仍然是个谜。主要障碍是灾难恢复会影响许多不同的过程,因此很难区分因果关系。为了解决这个问题,我们采用了利用 ILSXISS 系列小鼠重组自交系的定量遗传学方法。在 42 个品系中,DR(随意喂食 60% [AL])的雌性平均寿命为 380 至 1070 天,AL 饮食的平均寿命为 490 至 1020 天。 DR 和 AL 下的寿命受遗传控制,分别显示 34% 和 36% 的遗传力。 DR 和 AL 的寿命之间没有相关性;因此,不同的基因在两种方案下调节寿命。不同时期的 DR 后恢复 AL 饮食后,DR 寿命与女性生育能力显着相关(R = 0.44,P = 0.006)。我们使用多变量方法评估了燃料效率(FE,独立于绝对食物摄入量维持生长和体重的能力),发现它与寿命和女性生育能力相关,这表明可能存在因果关系。我们发现了几个负责这些性状的数量性状位点,映射到 7、9 和 15 号染色体。我们提出了一个代谢模型,其中 DR 的抗衰老作用与有效利用膳食资源的能力是一致的。
Dietary restriction (DR) has been used for decades to retard aging in rodents, but its mechanism of action remains an enigma. A principal roadblock has been that DR affects many different processes, making it difficult to distinguish cause and effect. To address this problem, we applied a quantitative genetics approach utilizing the ILSXISS series of mouse recombinant inbred strains. Across 42 strains, mean female lifespan ranged from 380 to 1070 days on DR (fed 60% of ad libitum [AL]) and from 490 to 1020 days on an AL diet. Longevity under DR and AL is under genetic control, showing 34% and 36% heritability, respectively. There was no correlation between lifespans on DR and AL; thus different genes modulate longevity under the two regimens. DR lifespans are significantly correlated with female fertility after return to an AL diet after various periods of DR (R = 0.44, P = 0.006). We assessed fuel efficiency (FE, ability to maintain growth and body weight independent of absolute food intake) using a multivariate approach and found it to be correlated with longevity and female fertility, suggesting possible causality. We found several quantitative trait loci responsible for these traits, mapping to chromosomes 7, 9, and 15. We present a metabolic model in which the anti-aging effects of DR are consistent with the ability to efficiently utilize dietary resources.
DOI: 10.1111/j.1474-9726.2006.00236.x
发表时间: 2006-12-01
期刊: AGING CELL
影响因子: 7.8
作者:
Harper, James M.;Leathers, Charles W.;Austad, Steven N.
通讯作者: Austad, Steven N.
DOI: 10.1096/fj.02-0533fje
发表时间: 2003-02-01
期刊: FASEB JOURNAL
影响因子: 4.8
作者:
Forster, MJ;Morris, P;Sohal, RS
通讯作者: Sohal, RS
DOI: 10.1098/rspb.2005.3456
发表时间: 2006-06-07
影响因子: 4.7
作者:
Johnston, S. L.;Grune, T.;Speakman, J. R.
通讯作者: Speakman, J. R.
DOI: 10.1093/jn/74.3.243
发表时间: 1961-01-01
影响因子: 4.2
作者:
LEE, M;LUCIA, SP
通讯作者: LUCIA, SP
鼠类寿命对饮食限制的反应中的遗传变异:从寿命延长到寿命缩短。
DOI: 10.1111/j.1474-9726.2009.00533.x
发表时间: 2010-02
期刊: Aging cell
影响因子: 7.8
作者:
Liao CY;Rikke BA;Johnson TE;Diaz V;Nelson JF
通讯作者: Nelson JF