缺陷的自和AMPK失活驱动糖尿病病中的铁亡
Sho Matsui1, Takeshi Yamamoto2, Yoshitsugu Takabatake1
1Department of Nephrology, The University of Osaka, Osaka, Japan.
Diabetologia
|November 28, 2025
概括
糖尿病病通过损害自和AMP激活蛋白激酶 (AMPK) 信号传递,增加了细胞中铁亡的易感性. 激活这些通路可能会防止糖尿病损伤.
科学领域:
- 细胞生物学 细胞生物学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 代谢疾病 代谢疾病
背景情况:
- 脂质过氧化驱动的细胞死亡形式铁亡,与急性损伤 (AKI) 有关.
- 糖尿病病 (DKD) 增加了AKI风险,但其对铁亡的影响尚不清楚.
- 这项研究调查了DKD对脏近壁管状上皮细胞 (PTEC) 铁亡的影响.
研究的目的:
- 为了确定DKD是否会加剧PTEC中的铁灭易感性.
- 探索自和AMP激活蛋白激酶 (AMPK) 在这个过程中的信号传递的作用.
主要方法:
- 在人类DKD脏活检中检查了ferroptotic标记物,自 (SQSTM1) 和AMPK活性.
- 采用了带有链毒素 (STZ) 诱导和db/db 2型糖尿病的小鼠模型,这些小鼠模型具有缺血-再输血损伤.
- 使用Atg5缺乏和野生类型的PTECs,以及铁-1,拉巴胺素和AICAR治疗.
主要成果:
- 人类DKD脏显示铁亡的增加,自的受损,以及PTEC中AMPK活性的降低.
- 在STZ诱导的AKI小鼠中,自性缺陷加剧了铁亡;在db/db小鼠中,拉巴素减轻了铁亡.
- 通过AICAR激活AMPK可减少体外铁和DKD模型中的AKI严重程度.
结论:
- 损伤的自和非活化的AMPK显著增加了DKD中的ferroptosis易感性.
- 针对自增强和AMPK激活的治疗策略可能会防止与DKD相关的损伤.
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