Fibroblasts derived from long-lived insulin receptor substrate 1 null mice are not resistant to multiple forms of stress.

Fibroblasts derived from long-lived insulin receptor substrate 1 null mice are not resistant to multiple forms of stress.
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DOI:
10.1111/acel.12255
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发表时间:
2014-10
期刊:
影响因子:
7.8
通讯作者:
Selman C
Selman C
中科院分区:
生物学1区
文献类型:
--
作者:
Page MM;Sinclair A;Robb EL;Stuart JA;Withers DJ;Selman C

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通过胰岛素/胰岛素样生长因子-1 信号 (IIS) 信号通路减少的信号是模型生物体中高度保守的寿命决定因素。尽管细胞应激抵抗可能很重要,但 IIS 对寿命和健康影响的确切机制目前尚不清楚。我们之前已经证明,与野生型 (WT) 对照相比,全面缺乏胰岛素受体底物 1 (Irs1−/−) 的小鼠寿命较长,并且在更长的时间内没有出现与年龄相关的病理变化。在这项研究中,我们表明,来自 Irs1−/− 小鼠的原代真皮成纤维细胞和原代成肌细胞对一系列氧化和非氧化化学应激源的抵抗力并不比来自 WT 小鼠的细胞更强。
Reduced signalling through the insulin/insulin-like growth factor-1 signalling (IIS) pathway is a highly conserved lifespan determinant in model organisms. The precise mechanism underlying the effects of the IIS on lifespan and health is currently unclear, although cellular stress resistance may be important. We have previously demonstrated that mice globally lacking insulin receptor substrate 1 (Irs1−/−) are long-lived and enjoy a greater period of their life free from age-related pathology compared with wild-type (WT) controls. In this study, we show that primary dermal fibroblasts and primary myoblasts derived from Irs1−/− mice are no more resistant to a range of oxidant and nonoxidant chemical stressors than cells derived from WT mice.
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