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Xiao Z, Wang X, Pan X, Xie J, Xu H. Mitochondrial iron dyshomeostasis and its potential as a therapeutic target for Parkinson's disease. Exp Neurol 2024; 372:114614. [PMID: 38007207 DOI: 10.1016/j.expneurol.2023.114614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/30/2023] [Accepted: 11/19/2023] [Indexed: 11/27/2023]
Abstract
Abnormal iron accumulation has been implicated in the etiology of Parkinson's disease (PD). Understanding how iron damages dopaminergic neurons in the substantia nigra (SN) of PD is particularly important for developing targeted neurotherapeutic strategies for the disease. However, it is still not fully understood how excess iron contributes to the neurodegeneration of dopaminergic neurons in PD. There has been increased attention on mitochondrial iron dyshomeostasis, iron-induced mitochondrial dysfunction and ferroptosis in PD. Therefore, this review begins with a brief introduction to describe cellular iron metabolism and the dysregulation of iron metabolism in PD. Then we provide an update on how iron is delivered to mitochondria and induces the damage of dopaminergic neurons in PD. In addition, we also summarize new research progress on iron-dependent ferroptosis in PD and mitochondria-localized proteins involved in ferroptosis. This will provide new insight into potential therapeutic strategies targeting mitochondrial iron dysfunction.
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Affiliation(s)
- Zhixin Xiao
- Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Department of Physiology, School of Basic Medicine, Institute of Brain Science and Disease, Qingdao University, Qingdao, China
| | - Xiaoya Wang
- Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Department of Physiology, School of Basic Medicine, Institute of Brain Science and Disease, Qingdao University, Qingdao, China
| | - Xuening Pan
- Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Department of Physiology, School of Basic Medicine, Institute of Brain Science and Disease, Qingdao University, Qingdao, China
| | - Junxia Xie
- Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Department of Physiology, School of Basic Medicine, Institute of Brain Science and Disease, Qingdao University, Qingdao, China.
| | - Huamin Xu
- Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Department of Physiology, School of Basic Medicine, Institute of Brain Science and Disease, Qingdao University, Qingdao, China.
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Pan J, Xiong W, Zhang A, Zhang H, Lin H, Gao L, Ke J, Huang S, Zhang J, Gu J, Chang ACY, Wang C. The Imbalance of p53-Park7 Signaling Axis Induces Iron Homeostasis Dysfunction in Doxorubicin-Challenged Cardiomyocytes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206007. [PMID: 36967569 DOI: 10.1002/advs.202206007] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/23/2023] [Indexed: 05/27/2023]
Abstract
Doxorubicin (DOX)-induced cardiotoxicity (DoIC) is a major side effect for cancer patients. Recently, ferroptosis, triggered by iron overload, is demonstrated to play a role in DoIC. How iron homeostasis is dysregulated in DoIC remains to be elucidated. Here, the authors demonstrate that DOX challenge exhibits reduced contractile function and induction of ferroptosis-related phenotype in cardiomyocytes, evidenced by iron overload, lipid peroxide accumulation, and mitochondrial dysfunction. Compared to Ferric ammonium citrate (FAC) induced secondary iron overload, DOX-challenged cardiomyocytes show a dysfunction of iron homeostasis, with decreased cytoplasmic and mitochondrial iron-sulfur (FeS) cluster-mediated aconitase activity and abnormal expression of iron homeostasis-related proteins. Mechanistically, mass spectrometry analysis identified DOX-treatment induces p53-dependent degradation of Parkinsonism associated deglycase (Park7) which results in iron homeostasis dysregulation. Park7 counteracts iron overload by regulating iron regulatory protein family transcription while blocking mitochondrial iron uptake. Knockout of p53 or overexpression of Park7 in cardiomyocytes remarkably restores the activity of FeS cluster and iron homeostasis, inhibits ferroptosis, and rescues cardiac function in DOX treated animals. These results demonstrate that the iron homeostasis plays a key role in DoIC ferroptosis. Targeting of the newly identified p53-Park7 signaling axis may provide a new approach to prevent DoIC.
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Affiliation(s)
- Jianan Pan
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Weiyao Xiong
- Department of Shanghai Institute of Precision Medicine, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200135, P. R. China
| | - Alian Zhang
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Hui Zhang
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, 200030, P. R. China
| | - Hao Lin
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Lin Gao
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Jiahan Ke
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Shuying Huang
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Junfeng Zhang
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Jun Gu
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
| | - Alex Chia Yu Chang
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
- Department of Shanghai Institute of Precision Medicine, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200135, P. R. China
| | - Changqian Wang
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University school of Medicine, Shanghai, 200001, P. R. China
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