维生素C抑制ACSL4,以缓解灵长类动物的铁衰老
Lixiao Liu1, Zikai Zheng1, Wanbang You2
1China National Center for Bioinformation and Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Cell metabolism
|March 12, 2026
概括
科学家们发现了一种新的衰老机制,称为"铁衰老",由铁和脂质损伤驱动. 维生素C (VC) 抑制了这一过程,减少了老化迹象,改善了老子的健康状况.
科学领域:
- 老年学是指老年学的学科.
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 衰老与氧化应激有关,但关键的分子通路尚未完全理解.
- 与年龄相关的衰退的具体可用药物目标仍然难以捉摸.
- 铁的积累和脂质过氧化与衰老过程有关.
研究的目的:
- 要定义一个保存的铁脂轴驱动灵长类老化,称为"铁老化".
- 为了研究甲基辅酶A (CoA) 合成酶长链家族成员4 (ACSL4) 在铁老化中的作用.
- 评估维生素C (VC) 作为治疗铁老化的治疗干预措施.
主要方法:
- 在人类和非人类灵长类动物中进行多组织分析,以识别随着年龄的增长而积累的铁.
- 功能查和目标参与研究以确定ACSL4抑制剂.
- 在老中长期给予VC以评估其对衰老表型和生物标志物的影响.
主要成果:
- 确定了一种保存的铁脂轴 (铁老化),其特征是随着年龄的增长而积累的铁和ACSL4介导的脂质过氧化.
- 通过基因编辑抑制ACSL4,减轻了小鼠的衰老表型.
- 在老中长期使用VC减少了铁衰老特征,减轻了多器官病理,改善了神经和代谢功能.
- 多原子衰老时钟显示了VC介导的生物年龄逆转.
结论:
- 铁衰老是由铁脂轴和ACSL4驱动的,是灵长类动物衰老的一个核心,可向的机制.
- 维生素C作为ACSL4.4的直接抑制剂起作用.
- VC代表了一种可翻译的老年保护策略,针对铁老化和改善与年龄相关的功能衰退.
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