SIRT1 reduces endothelial activation without affecting vascular function in ApoE-/- mice.

SIRT1 reduces endothelial activation without affecting vascular function in ApoE-/- mice.
复制标题

DOI:
10.18632/aging.100162
复制
发表时间:
2010-06
期刊:
Aging
影响因子:
--
通讯作者:
Matter CM
Matter CM
中科院分区:
其他
文献类型:
--
作者:
Stein S;Schäfer N;Breitenstein A;Besler C;Winnik S;Lohmann C;Heinrich K;Brokopp CE;Handschin C;Landmesser U;Tanner FC;Lüscher TF;Matter CM

文献摘要

参考文献

被引文献

相似文献

过度 活性氧(ROS)的产生有助于 动脉粥样硬化,至少部分通过引起内皮功能障碍, 炎症激活III类组蛋白去乙酰化酶SIRT 1已被 与延长寿命有关。在脉管系统中,SIRT 1 使用SIRT 1过表达或激活的功能获得已经被 显示通过刺激血管内皮细胞来改善小鼠和大鼠的内皮功能。 内皮型一氧化氮合酶(eNOS)。然而,SIRT 1的作用 动脉粥样硬化中内皮功能的丧失仍然是 表征了因此,我们研究了内皮细胞的作用, 高胆固醇血症ApoE-/-中内源性SIRT 1降低 小鼠我们观察到内皮舒张和eNOS(Ser 1177) 20周龄雄性动脉粥样硬化ApoE-/- SIRT 1 +/-和ApoE-/-SIRT 1 +/+小鼠。 然而,SIRT 1阻止了内皮超氧化物的产生,抑制了 NF-κB信号传导和粘附分子表达减少。 年轻高胆固醇血症ApoE-/-SIRT 1 +/-的治疗 用脂多糖增强NF-κB信号的小鼠, 与ApoE-/-相比,ICAM-1和VCAM-1的内皮表达显著 SIRT 1 +/+小鼠。总之,内源性SIRT 1减少, ApoE-/-小鼠的内皮激活,但不 影响内皮依赖性血管舒张。
Excessive production of reactive oxygen species (ROS) contributes to progression of atherosclerosis, at least in part by causing endothelial dysfunction and inflammatory activation. The class III histone deacetylase SIRT1 has been implicated in extension of lifespan. In the vasculature,SIRT1 gain-of-function using SIRT1 overexpression or activation has been shown to improve endothelial function in mice and rats via stimulation of endothelial nitric oxide (NO) synthase (eNOS). However, the effects of SIRT1 loss-of-function on the endothelium in atherosclerosis remain to be characterized. Thus, we have investigated the endothelial effects of decreased endogenous SIRT1 in hypercholesterolemic ApoE-/- mice. We observed no difference in endothelial relaxation and eNOS (Ser1177) phosphorylation between 20-week old male atherosclerotic ApoE-/- SIRT1+/- and ApoE-/- SIRT1+/+ mice. However, SIRT1 prevented endothelial superoxide production, inhibited NF-κB signaling, and diminished expression of adhesion molecules. Treatment of young hypercholesterolemic ApoE-/- SIRT1+/- mice with lipopolysaccharide to boost NF-κB signaling led to a more pronounced endothelial expression of ICAM-1 and VCAM-1 as compared to ApoE-/- SIRT1+/+ mice. In conclusion, endogenous SIRT1 diminishes endothelial activation in ApoE-/- mice, but does not affect endothelium-dependent vasodilatation.
DOI: 10.1093/eurheartj/ehq107
发表时间: 2010-09
影响因子: 39.3
作者:
Stein S;Lohmann C;Schäfer N;Hofmann J;Rohrer L;Besler C;Rothgiesser KM;Becher B;Hottiger MO;Borén J;McBurney MW;Landmesser U;Lüscher TF;Matter CM
通讯作者: Matter CM
DOI: 10.1371/journal.pbio.0040031
发表时间: 2006-02
期刊: PLoS biology
影响因子: 9.8
作者:
Bordone L;Motta MC;Picard F;Robinson A;Jhala US;Apfeld J;McDonagh T;Lemieux M;McBurney M;Szilvasi A;Easlon EJ;Lin SJ;Guarente L
通讯作者: Guarente L
DOI: 10.1074/jbc.m109.088682
发表时间: 2010-03-12
影响因子: 4.8
作者:
Pacholec, Michelle;Bleasdale, John E.;Ahn, Kay
通讯作者: Ahn, Kay
DOI: 10.1038/21224
发表时间: 1999-06-10
期刊: NATURE
影响因子: 64.8
作者:
Dimmeler, S;Fleming, I;Zeiher, AM
通讯作者: Zeiher, AM