奶油
蛋白激酶B
棉铃虫
蛋白质羰基化
PI3K/AKT/mTOR通路
活性氧
细胞生物学
化学
滞育
转录因子
生物
生物化学
磷酸化
信号转导
谷胱甘肽
酶
植物
生殖器鳞翅目
幼虫
基因
作者
Shao‐Lei Geng,Hai‐Yin Li,Xiao‐Shuai Zhang,Tao Wang,Shi‐Pei Zhou,Wei‐Hua Xu
出处
期刊:FEBS Journal
[Wiley]
日期:2022-12-14
卷期号:290 (8): 2127-2145
被引量:1
摘要
Reactive oxygen species (ROS) are considered a major cause of ageing and ageing-related diseases through protein carbonylation. Little is known about the molecular mechanisms that confer protection against ROS. Here, we observed that, compared with nondiapause-destined pupae, high protein carbonyl levels are present in the brains of diapause-destined pupae, which is a 'non-ageing' phase in the moth Helicoverpa armigera. Protein carbonyl levels respond to ROS and decrease metabolic activity to induce diapause in order to extend lifespan. However, protein carbonylation in the brains of diapause-destined pupae still occurs at a physiological level compared to young adult brains. We find that ROS activate Akt, and Akt then phosphorylates the transcription factor CREB to facilitate its nuclear import. CREB binds to the promoter of carbonyl reductase 1 (CBR1) and regulates its expression. High CBR1 levels reduce protein carbonyl levels to maintain physiological levels. This is the first report showing that the moth brain can naturally control protein carbonyl levels through a distinct ROS-Akt-CREB-CBR1 pathway to extend lifespan.
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