Department of Nutritional Sciences, Obesity Research Institute, Texas Tech University, Lubbock, TX 79409, USA.
Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA.
Nutrients. 2020 May 20;12(5):1482. doi: 10.3390/nu12051482.
Aging and healthspan are determined by both environmental and genetic factors. The insulin/insulin-like growth factor-1(IGF-1) pathway is a key mediator of aging in and mammals. Specifically, DAF-2 signaling, an ortholog of human IGF, controls DAF-16/FOXO transcription factor, a master regulator of metabolism and longevity. Moreover, mitochondrial dysfunction and oxidative stress are both linked to aging. We propose that daily supplementation of tart cherry extract (TCE), rich in anthocyanins with antioxidant properties may exert dual benefits for mitochondrial function and oxidative stress, resulting in beneficial effects on aging in . We found that TCE supplementation at 6 μg or 12 μg/mL, increased ( < 0.05) the mean lifespan of wild type N2 worms, respectively, when compared to untreated control worms. Consistent with these findings, TCE upregulated ( < 0.05) expression of longevity-related genes such as and (but not or genes) and genes related to oxidative stress such as . Further, we showed that TCE supplementation increased spare respiration in N2 worms. However, TCE did not change the mean lifespan of and mutant worms. In conclusion, our findings indicate that TCE confers healthspan benefits in through enhanced mitochondrial function and reduced oxidative stress, mainly via the DAF-16 pathway.
衰老是由环境和遗传因素共同决定的,健康寿命也是如此。胰岛素/胰岛素样生长因子-1(IGF-1)途径是调控衰老的关键介质。具体来说,DAF-2 信号通路是人类 IGF 的同源物,它控制着 DAF-16/FOXO 转录因子,后者是代谢和长寿的主要调节因子。此外,线粒体功能障碍和氧化应激都与衰老有关。我们假设,富含抗氧化特性花青素的樱桃提取物(TCE)的日常补充可能对线粒体功能和氧化应激具有双重益处,从而对秀丽隐杆线虫的衰老产生有益影响。我们发现,与未处理的对照组相比,TCE 以 6μg 或 12μg/ml 的浓度补充时,分别使野生型 N2 线虫的平均寿命延长(<0.05)。与这些发现一致,TCE 上调(<0.05)了与寿命相关的基因的表达,如和(但不包括或基因)以及与氧化应激相关的基因,如。此外,我们表明 TCE 增加了 N2 线虫的备用呼吸。然而,TCE 并没有改变和突变体线虫的平均寿命。总之,我们的研究结果表明,TCE 通过增强线粒体功能和减少氧化应激,主要通过 DAF-16 途径,为秀丽隐杆线虫赋予了健康寿命的益处。
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