The critical role and molecular mechanisms of ferroptosis in antioxidant systems: a narrative review

Meng Liu; Xiao-Yu Kong; Yuan Yao; Xin-An Wang; Wei Yang; Hui Wu; Song Li; Jia-Wang Ding; Jian Yang

doi:10.21037/atm-21-6942

The critical role and molecular mechanisms of ferroptosis in antioxidant systems: a narrative review

Ann Transl Med. 2022 Mar;10(6):368. doi: 10.21037/atm-21-6942.

Authors

Meng Liu^{1

2}, Xiao-Yu Kong^{1

2}, Yuan Yao^{1

2}, Xin-An Wang^{1

2}, Wei Yang^{1

2}, Hui Wu^{1

2}, Song Li^{1

2}, Jia-Wang Ding^{1

2}, Jian Yang^{1

2}

Affiliations

¹ Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, China.
² Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, China.

Abstract

Background and objective: Ferroptosis is a recently discovered form of cell death which differs from other forms of cell death in terms of morphology, biochemistry, and regulatory mechanisms. Ferroptosis is regulated by a complex system and the precise molecular mechanisms are still being elucidated. Over the past few years, extensive research has revealed that the essence of ferroptosis is iron-dependent accumulation of lipid hydroperoxides induced by oxidative stress, and the System Xc-glutathione (GSH)-glutathione peroxidase 4 (GPX4) pathway is the main ferroptosis prevention system. Meanwhile, other antioxidant systems have also been implicated in regulating ferroptosis, including the transsulfuration pathway, mevalonate pathway, ferroptosis inhibitory protein 1 (FSP1)-Coenzyme Q10 (CoQ10) pathway, dihydroorotate dehydrogenase (DHODH)-dihydroubiquione (CoQH2) pathway, and GTP cyclohydrolase-1 (GCH1)-tetrahydrobiopterin (BH4) pathway. This article reviews the molecular mechanisms of ferroptosis and its critical role in antioxidant systems, aiming to reveal that antioxidation is an important method of inhibiting ferroptosis and to provide a new direction for the treatment of ferroptosis-related diseases.

Methods: We searched all original papers and reviews about the molecular mechanisms of ferroptosis in antioxidant systems using PubMed to November 2021. The search terms used included: 'ferroptosis', 'ferroptosis inducers', 'ferroptosis inhibitors', 'ferroptosis and GSH', 'ferroptosis and GPX4', 'ferroptosis and System Xc-', 'SLC7A11', 'P53', 'NRF2 and ferroptosis', 'iron metabolism', 'lipid peroxidation', 'antioxidant systems', 'transsulfuration pathway', 'mevalonate pathway', 'FSP1-CoQ10', 'DHODH-CoQH2', and 'GCH1-BH4'.

Key content and findings: We first introduced the origin of ferroptosis and its common inhibitors and inducers. Next, we discussed the molecular mechanisms of ferroptosis and its role in antioxidant systems in existing studies. Finally, we briefly summarized the relationship between ferroptosis and diseases. It reveals that antioxidation is an important method of inhibiting ferroptosis.

Conclusions: This review discusses the recent rapid progress in the understanding of the molecular mechanisms of ferroptosis and its role in several antioxidant systems.

Keywords: Ferroptosis; System Xc-GSH-GPX4 pathway; iron loading; lipid peroxidation; transsulfuration pathway.

Publication types

Review