在糖尿病损伤中,过量的铁积累介导着衰老
Xueer Cheng1,2,3,4, Yanyan Li5, Li Chen1,2,3,4
1Department of Nutrition and Food Hygiene, Key Laboratory of Environment & Health, Ministry of Education, Huazhong University of Science and Technology, Wuhan, China.
Journal of biochemical and molecular toxicology
|March 14, 2024
概括
铁的积累加剧了糖尿病病 (DN) 中的细胞衰老和DNA损伤. 这项研究揭示了铁.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 糖尿病病 (DN) 的特点是细胞衰老和铁积累.
- 有限的证据将铁的积累与DNA中的衰老细胞联系起来.
- 铁在DN通过衰老致病的作用尚不清楚.
研究的目的:
- 为了研究铁在糖尿病病症中细胞衰老的发病过程中的参与.
- 探索铁代谢与DNA中的衰老标志物之间的关系.
- 确定铁的积累是否有助于DNA损伤和DNA衰老.
主要方法:
- 在体外研究中使用高葡萄糖 (HG) 处理的细胞.
- 在体内研究使用DN小鼠模型 (高脂肪饮食和 estreptozotocin).
- 试验包括基因本体学,基因组丰富,β-银酸酶染色,5-乙烯基-2-脱氧氨胺染色,西斑,LDH释放试验和免疫光.
主要成果:
- 高葡萄糖高调老化途径在体外和体内,增加LDH释放.
- 铁代谢蛋白质在暴露于HG的细胞中失调;补充铁会加剧衰老标志物和DNA损伤 (gamma-H2A.X),而铁化可以逆转这些影响.
- DN小鼠和患者的费里丁和衰老标志物增加,并观察到同局部化.
结论:
- 铁的积累与DNA损伤加重和DNA细胞衰老加速有关.
- 铁在糖尿病病症中细胞衰老的发病过程中起着重要作用.
- 准铁代谢可能为DN提供治疗策略.
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