Jiang Yulang, Liu Xuling, Sun Mingyu
Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Department of Infectious Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
Int J Biol Macromol. 2025 Jun 22;319(Pt 2):145472. doi: 10.1016/j.ijbiomac.2025.145472.
Ferroptosis is a regulated cell death pathway characterized by iron-dependent accumulation of lipid peroxides and distinct mitochondrial morphological alterations, including reduced volume, increased membrane density, elevated membrane potential, cristae loss, and outer membrane rupture. These features starkly contrast with those observed in apoptosis, autophagy, and necrosis. As the cellular energy hub and metabolic nexus, mitochondria play multifaceted regulatory roles in ferroptosis through their integration of metabolic networks and redox homeostasis. This review systematically examines mitochondrial mechanisms driving ferroptosis progression, focusing on three key aspects: (1) metabolic reprogramming involving amino acid, lipid, and glucose metabolism; (2) dynamic regulation of reactive oxygen species (ROS) through electron transport chain activity and antioxidant defenses; and (3) iron/calcium ion flux mediated by mitochondrial membrane transporters and storage proteins. Notably, we propose a novel perspective emphasizing the unique contribution of mitochondrial membrane lipid peroxidation-driven by localized iron pools and specialized phospholipid composition-as a critical amplifier of ferroptotic signaling, distinct from cytoplasmic peroxidation pathways. By elucidating these mechanisms, our analysis identifies mitochondria-targeted strategies-such as ROS scavengers, iron chelators, and cristae-stabilizing compounds-as promising therapeutic avenues for ferroptosis-associated pathologies, including neurodegenerative diseases, ischemia-reperfusion injury, and drug-resistant cancers. This review provides a framework for understanding mitochondrial specificity in ferroptosis regulation and advances translational opportunities for modulating this pathway in clinical contexts.
铁死亡是一种受调控的细胞死亡途径,其特征是脂质过氧化物的铁依赖性积累以及线粒体形态的明显改变,包括体积减小、膜密度增加、膜电位升高、嵴丢失和外膜破裂。这些特征与凋亡、自噬和坏死中观察到的特征形成鲜明对比。作为细胞的能量枢纽和代谢中心,线粒体通过整合代谢网络和氧化还原稳态在铁死亡中发挥多方面的调节作用。本综述系统地研究了驱动铁死亡进程的线粒体机制,重点关注三个关键方面:(1)涉及氨基酸、脂质和葡萄糖代谢的代谢重编程;(2)通过电子传递链活性和抗氧化防御对活性氧(ROS)的动态调节;(3)由线粒体膜转运蛋白和储存蛋白介导的铁/钙离子通量。值得注意的是,我们提出了一个新的观点,强调由局部铁池和特殊磷脂组成驱动的线粒体膜脂质过氧化的独特贡献——作为铁死亡信号的关键放大器,不同于细胞质过氧化途径。通过阐明这些机制,我们的分析确定了针对线粒体的策略——如ROS清除剂、铁螯合剂和嵴稳定化合物——作为治疗与铁死亡相关疾病(包括神经退行性疾病、缺血再灌注损伤和耐药癌症)的有前景的治疗途径。本综述为理解铁死亡调节中线粒体的特异性提供了一个框架,并推进了在临床环境中调节这一途径的转化机会。
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