核素降解作用相互作用因衰老而敏感化,并因老鼠肝脏的慢性酒精消费而增强
Osiris Germán Idelfonso-García1,2, Brisa Rodope Alarcón-Sánchez1,3, Dafne Guerrero-Escalera1
1Laboratory of Liver Diseases, National Institute of Genomic Medicine-INMEGEN, Mexico City 14610, Mexico.
Antioxidants (Basel, Switzerland)
|March 28, 2024
概括
慢性饮酒会加剧老化相关的小鼠肝脏的氧化还原失衡. 它破坏了核素 (NXN) 蛋白相互作用,加剧了细胞损伤和衰老.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 衰老研究研究 衰老研究
背景情况:
- 衰老增加了反应性物种,导致氧化还原失衡和细胞损伤.
- 饮酒会加剧与衰老相关的变化,并促进肝脏疾病.
- 核素 (NXN) 是一种对氧化还原敏感的酶,通过蛋白质相互作用调节细胞过程.
研究的目的:
- 为了研究慢性酒精消费对老鼠肝脏中NXN依赖的氧化还原相互作用的影响.
- 了解酒精如何影响NXN局部化及其与衰老过程中关键蛋白质的相互作用.
主要方法:
- 在暴露于慢性酒精的老年小鼠的衰老细胞中分析NXN局部化.
- 评估NXN蛋白质与蛋白质相互作用比率 (NXN与FLII,MYD88,CAMK2A,PFK1) 的评估.
- 测量碳化蛋白质,细胞增殖和原比率 (原I和III).
主要成果:
- 慢性酒精消费改变了NXN局部化,导致衰老细胞.
- 酒精消费降低了NXN的相互作用能力,并加剧了NXN相互作用比率的因年龄引起的变化.
- 观察到碳化蛋白和细胞增殖的增加,以及逆转的原I/III比率.
结论:
- 慢性酒精消费通过损害NXN的相互作用能力来增强与年龄相关的氧化还原平衡下降.
- 这项研究强调了结合衰老和酒精对肝脏NXN介导的氧化还原信号传递的有害影响.
- 这些发现提供了关于肝脏疾病机制的见解,这些机制是由衰老和酒精暴露中改变的氧化还原平衡驱动的.
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