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Liu Y, Huang W, Wen J, Xiong X, Xu T, Wang Q, Chen X, Zhao X, Li S, Li X, Yang W. Differential distribution of PINK1 and Parkin in the primate brain implies distinct roles. Neural Regen Res 2025; 20:1124-1134. [PMID: 38989951 DOI: 10.4103/nrr.nrr-d-23-01140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/09/2023] [Indexed: 07/12/2024] Open
Abstract
JOURNAL/nrgr/04.03/01300535-202504000-00028/figure1/v/2024-07-06T104127Z/r/image-tiff The vast majority of in vitro studies have demonstrated that PINK1 phosphorylates Parkin to work together in mitophagy to protect against neuronal degeneration. However, it remains largely unclear how PINK1 and Parkin are expressed in mammalian brains. This has been difficult to address because of the intrinsically low levels of PINK1 and undetectable levels of phosphorylated Parkin in small animals. Understanding this issue is critical for elucidating the in vivo roles of PINK1 and Parkin. Recently, we showed that the PINK1 kinase is selectively expressed as a truncated form (PINK1-55) in the primate brain. In the present study, we used multiple antibodies, including our recently developed monoclonal anti-PINK1, to validate the selective expression of PINK1 in the primate brain. We found that PINK1 was stably expressed in the monkey brain at postnatal and adulthood stages, which is consistent with the findings that depleting PINK1 can cause neuronal loss in developing and adult monkey brains. PINK1 was enriched in the membrane-bound fractionations, whereas Parkin was soluble with a distinguishable distribution. Immunofluorescent double staining experiments showed that PINK1 and Parkin did not colocalize under physiological conditions in cultured monkey astrocytes, though they did colocalize on mitochondria when the cells were exposed to mitochondrial stress. These findings suggest that PINK1 and Parkin may have distinct roles beyond their well-known function in mitophagy during mitochondrial damage.
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Affiliation(s)
- Yanting Liu
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau CNS Regeneration Institute of Jinan University, Jinan University, Guangzhou, Guangdong Province, China
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2
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de Talhouët C, Esteras N, Soutar MPM, O'Callaghan B, Plun-Favreau H. KAT8 compound inhibition inhibits the initial steps of PINK1-dependant mitophagy. Sci Rep 2024; 14:11721. [PMID: 38777823 PMCID: PMC11111795 DOI: 10.1038/s41598-024-60602-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 04/25/2024] [Indexed: 05/25/2024] Open
Abstract
It has recently been shown that KAT8, a genome-wide association study candidate risk gene for Parkinson's Disease, is involved in PINK1/Parkin-dependant mitophagy. The KAT8 gene encodes a lysine acetyltransferase and represents the catalytically active subunit of the non-specific lethal epigenetic remodelling complex. In the current study, we show that contrary to KAT5 inhibition, dual inhibition of KAT5 and KAT8 via the MG149 compound inhibits the initial steps of the PINK1-dependant mitophagy process. More specifically, our study shows that following mitochondrial depolarisation induced by mitochondrial toxins, MG149 treatment inhibits PINK1-dependant mitophagy initiation by impairing PINK1 activation, and subsequent phosphorylation of Parkin and ubiquitin. While this inhibitory effect of MG149 on PINK1-activation is potent, MG149 treatment in the absence of mitochondrial toxins is sufficient to depolarise the mitochondrial membrane, recruit PINK1 and promote partial downstream recruitment of the autophagy receptor p62, leading to an increase in mitochondrial delivery to the lysosomes. Altogether, our study provides additional support for KAT8 as a regulator of mitophagy and autophagy processes.
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Affiliation(s)
- Capucine de Talhouët
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
| | - Noemi Esteras
- Department of Biochemistry and Molecular Biology, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Marc P M Soutar
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Benjamin O'Callaghan
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
| | - Helene Plun-Favreau
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
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Yang K, Yan Y, Yu A, Zhang R, Zhang Y, Qiu Z, Li Z, Zhang Q, Wu S, Li F. Mitophagy in neurodegenerative disease pathogenesis. Neural Regen Res 2024; 19:998-1005. [PMID: 37862201 PMCID: PMC10749592 DOI: 10.4103/1673-5374.385281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/23/2023] [Accepted: 08/15/2023] [Indexed: 10/22/2023] Open
Abstract
Mitochondria are critical cellular energy resources and are central to the life of the neuron. Mitophagy selectively clears damaged or dysfunctional mitochondria through autophagic machinery to maintain mitochondrial quality control and homeostasis. Mature neurons are postmitotic and consume substantial energy, thus require highly efficient mitophagy pathways to turn over damaged or dysfunctional mitochondria. Recent evidence indicates that mitophagy is pivotal to the pathogenesis of neurological diseases. However, more work is needed to study mitophagy pathway components as potential therapeutic targets. In this review, we briefly discuss the characteristics of nonselective autophagy and selective autophagy, including ERphagy, aggrephagy, and mitophagy. We then introduce the mechanisms of Parkin-dependent and Parkin-independent mitophagy pathways under physiological conditions. Next, we summarize the diverse repertoire of mitochondrial membrane receptors and phospholipids that mediate mitophagy. Importantly, we review the critical role of mitophagy in the pathogenesis of neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Last, we discuss recent studies considering mitophagy as a potential therapeutic target for treating neurodegenerative diseases. Together, our review may provide novel views to better understand the roles of mitophagy in neurodegenerative disease pathogenesis.
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Affiliation(s)
- Kan Yang
- Department of Developmental and Behavioural Pediatric & Child Primary Care, Brain and Behavioural Research Unit of Shanghai Institute for Pediatric Research and MOE-Shanghai Key Laboratory for Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences, Shanghai, China
- College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan Province, China
| | - Yuqing Yan
- School of Medicine, Yunnan University, Kunming, Yunnan Province, China
| | - Anni Yu
- College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan Province, China
| | - Ru Zhang
- College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan Province, China
| | - Yuefang Zhang
- Songjiang Research Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zilong Qiu
- Songjiang Research Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengyi Li
- Neurosurgery Department, Kunming Yenan Hospital, Kunming, Yunnan Province, China
| | - Qianlong Zhang
- Department of Developmental and Behavioural Pediatric & Child Primary Care, Brain and Behavioural Research Unit of Shanghai Institute for Pediatric Research and MOE-Shanghai Key Laboratory for Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shihao Wu
- School of Medicine, Yunnan University, Kunming, Yunnan Province, China
| | - Fei Li
- Department of Developmental and Behavioural Pediatric & Child Primary Care, Brain and Behavioural Research Unit of Shanghai Institute for Pediatric Research and MOE-Shanghai Key Laboratory for Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xue A, Zhao D, Zhao C, Li X, Yang M, Zhao H, Zhao C, Lei X, Wu J, Zhang N. Study on the neuroprotective effect of Zhimu-Huangbo extract on mitochondrial dysfunction in HT22 cells induced by D-galactose by promoting mitochondrial autophagy. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:117012. [PMID: 37567426 DOI: 10.1016/j.jep.2023.117012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/28/2023] [Accepted: 08/06/2023] [Indexed: 08/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Zhimu-Huangbo (ZB) herb pair is a common prescription drug used by physicians of all dynasties, and has significant neuroprotective effect, such as the ZB can significantly promote neuronal cell regeneration, repair neuronal damage, and improve cognitive disorders. However, its ingredients are urgently needed to be identified and mechanisms is remained unclear. AIM OF THE STUDY Using ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS), the study of neuroprotective mechanism of Zhimu-Huangbo extract (ZBE) is investigated, and the network pharmacology technology and experimental validation is also performed. MATERIAL AND METHODS Firstly, UPLC-Q-TOF-MS technology was used to characterize the chemical components contained in the ZBE. After that, the TCMSP database and the Swiss Target Prediction method were used to search for potential target genes for ZBE compounds. At the same time, the OMIM and GeneCards disease databases were used to search for Alzheimer's disease (AD) targets and expanded with the GEO database. Then, GO and KEGG enrichment analysis was performed using OECloud tools. Subsequently, the potential mechanism of ZBE therapeutic AD predicted by network pharmacological analysis was experimentally studied and verified in vitro. RESULTS In the UPLC-Q-TOF-MS analysis of the ZBE, a total of 39 compounds were characterized including Neomangiferin, Oxyberberine, Timosaponin D, Berberine, Timosaponin A-III, Anemarsaponin E, Timosaponin A-I, Smilagenin and so on. A total of 831 potential targets and 13995 AD-related target genes were screened. A further analysis revealed the number of common targets between ZBE and AD is 698. Through GO and KEGG enrichment analysis, we found that ZBE's anti-AD targets were significantly enriched in autophagy and mitochondrial autophagy related pathways. The results of cell experiments also confirmed that ZBE can promote mitochondrial autophagy induced by D-galactose (D-gal) HT22 cells through the PTEN-induced kinase 1/Parkin (PINK1/Parkin) pathway. CONCLUSION ZBE can promote autophagy of mitochondria and play a protective role on damaged neurons.
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Affiliation(s)
- Ao Xue
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Deping Zhao
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Chenyu Zhao
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Xue Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Meng Yang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Hongmei Zhao
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Can Zhao
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Xia Lei
- Wuxi Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu, 214000, China.
| | - Jianli Wu
- Academy of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China
| | - Ning Zhang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150040, China; Wuxi Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu, 214000, China.
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Cui Y, Zhai Y, Yuan Y, Wang X, Xu Q, Wu X, Xu L, Ren T, Wang Q, Sun H. Inhibition of PTEN-induced kinase 1 autophosphorylation may assist in preventing epileptogenesis induced by pentylenetetrazol. Neurochem Int 2024; 172:105644. [PMID: 38029887 DOI: 10.1016/j.neuint.2023.105644] [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: 10/13/2023] [Revised: 11/15/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
PTEN-induced kinase 1 (PINK1) autophosphorylation-triggered mitophagy is the main mitophagic pathway in the nervous system. Moreover, multiple studies have confirmed that mitophagy is closely related to the occurrence and development of epilepsy. Therefore, we speculated that the PINK1 autophosphorylation may be involved in epileptogenesis by mediating mitophagic pathway. This study aimed to explore the contribution of activated PINK1 to epileptogenesis induced by pentylenetetrazol (PTZ) in Sprague‒Dawley rats. During PTZ-induced epileptogenesis, the levels of phosphorylated PINK1 were increased, accompanied by elevated mitophagy, mitochondria oxidative stress and neuronal damage. After microRNA intervention targeting translocase outer mitochondrial membrane 7 (TOM7) or overlapping with the m-AAA protease 1 homolog (OMA1), the levels of PINK1 phosphorylation, mitophagy, mitochondrial oxidative stress, neuronal injury were observed in the rats with induced epileptogenesis. Furthermore, inhibiting of the expression of TOM7, a positive regulator of PINK1 autophosphorylation, reversed the increase in PINK1 phosphorylation and alleviated mitophagy, neuronal injury, thereby preventing epileptogenesis. In contrast, reducing the levels of OMA1, a negative regulator of PINK1 autophosphorylation, led to increased phosphorylation of PINK1, accompanied by aggravated neuronal injury and ultimately, epileptogenesis. This study confirmed the contribution of activated PINK1 to PTZ-induced epileptogenesis and suggested that the inhibition of PINK1 autophosphorylation may assist in preventing epileptogenesis.
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Affiliation(s)
- Yaru Cui
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Yujie Zhai
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Yi Yuan
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Xiaoqian Wang
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Qianqian Xu
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Xiangdong Wu
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Linlin Xu
- Department of Neurology, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Tianpu Ren
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China
| | - Qiaoyun Wang
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China.
| | - Hongliu Sun
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, 264003, China.
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Verma H, Gangwar P, Yadav A, Yadav B, Rao R, Kaur S, Kumar P, Dhiman M, Taglialatela G, Mantha AK. Understanding the neuronal synapse and challenges associated with the mitochondrial dysfunction in mild cognitive impairment and Alzheimer's disease. Mitochondrion 2023; 73:19-29. [PMID: 37708950 DOI: 10.1016/j.mito.2023.09.003] [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: 04/28/2023] [Revised: 07/26/2023] [Accepted: 09/12/2023] [Indexed: 09/16/2023]
Abstract
Synaptic mitochondria are crucial for maintaining synaptic activity due to their high energy requirements, substantial calcium (Ca2+) fluctuation, and neurotransmitter release at the synapse. To provide a continuous energy supply, neurons use special mechanisms to transport and distribute healthy mitochondria to the synapse while eliminating the damaged mitochondria from the synapse. Along the neuron, mitochondrial membrane potential (ψ) gradient exists and is highest in the somal region. Lower ψ in the synaptic region renders mitochondria more vulnerable to oxidative stress-mediated damage. Secondly, mitochondria become susceptible to the release of cytochrome c, and mitochondrial DNA (mtDNA) is not shielded from the reactive oxygen species (ROS) by the histone proteins (unlike nuclear DNA), leading to activation of caspases and pronounced oxidative DNA base damage, which ultimately causes synaptic loss. Both synaptic mitochondrial dysfunction and synaptic failure are crucial factors responsible for Alzheimer's disease (AD). Furthermore, amyloid beta (Aβ) and hyper-phosphorylated Tau, the two leading players of AD, exaggerate the disease-like pathological conditions by reducing the mitochondrial trafficking, blocking the bi-directional transport at the synapse, enhancing the mitochondrial fission via activating the mitochondrial fission proteins, enhancing the swelling of mitochondria by increasing the influx of water through mitochondrial permeability transition pore (mPTP) opening, as well as reduced ATP production by blocking the activity of complex I and complex IV. Mild cognitive impairment (MCI) is also associated with decline in cognitive ability caused by synaptic degradation. This review summarizes the challenges associated with the synaptic mitochondrial dysfunction linked to AD and MCI and the role of phytochemicals in restoring the synaptic activity and rendering neuroprotection in AD.
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Affiliation(s)
- Harkomal Verma
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Prabhakar Gangwar
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Anuradha Yadav
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Bharti Yadav
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Rashmi Rao
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Sharanjot Kaur
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Puneet Kumar
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Monisha Dhiman
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India
| | - Giulio Taglialatela
- Department of Neurology, University of Texas Medical Branch, Galveston, TX, USA
| | - Anil Kumar Mantha
- Department of Zoology, School of Basic Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, India.
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Chen M, Yan R, Ding L, Luo J, Ning J, Zhou R. Research Advances of Mitochondrial Dysfunction in Perioperative Neurocognitive Disorders. Neurochem Res 2023; 48:2983-2995. [PMID: 37294392 DOI: 10.1007/s11064-023-03962-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/26/2023] [Accepted: 05/28/2023] [Indexed: 06/10/2023]
Abstract
Perioperative neurocognitive disorders (PND) increases postoperative dementia and mortality in patients and has no effective treatment. Although the detailed pathogenesis of PND is still elusive, a large amount of evidence suggests that damaged mitochondria may play an important role in the pathogenesis of PND. A healthy mitochondrial pool not only provides energy for neuronal metabolism but also maintains neuronal activity through other mitochondrial functions. Therefore, exploring the abnormal mitochondrial function in PND is beneficial for finding promising therapeutic targets for this disease. This article summarizes the research advances of mitochondrial energy metabolism disorder, inflammatory response and oxidative stress, mitochondrial quality control, mitochondria-associated endoplasmic reticulum membranes, and cell death in the pathogenesis of PND, and briefly describes the application of mitochondria-targeted therapies in PND.
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Affiliation(s)
- Mengjie Chen
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Ruyu Yan
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Lingling Ding
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China.
| | - Jiansheng Luo
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Jiaqi Ning
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Ruiling Zhou
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
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Wang H, Chen R, Xiao L, Kumar M, Acevedo-Cintrón J, Siuda J, Koziorowski D, Wszolek ZK, Dawson VL, Dawson TM. Defects in Mitochondrial Biogenesis Drive Mitochondrial Alterations in PINK1-deficient Human Dopamine Neurons. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.23.546087. [PMID: 37425943 PMCID: PMC10327008 DOI: 10.1101/2023.06.23.546087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Mutations and loss of activity in the protein kinase PINK1 play a role in the pathogenesis of Parkinson's disease (PD). PINK1 regulates many aspects of mitochondrial quality control including mitochondrial autophagy (mitophagy), fission, fusion, transport, and biogenesis. Defects in mitophagy are though to play a predominant role in the loss of dopamine (DA) neurons in PD. Here we show that, although there are defects in mitophagy in human DA neurons lacking PINK1, mitochondrial deficits induced by the absence of PINK1 are primarily due to defects in mitochondrial biogenesis. Upregulation of PARIS and the subsequent down regulation of PGC-1a accounts for the mitochondrial biogenesis defects. CRISPR/Cas9 knockdown of PARIS completely restores the mitochondrial biogenesis defects and mitochondrial function without impacting the deficits in mitophagy due to the absence of PINK1. These results highlight the importance mitochondrial biogenesis in the pathogenesis of PD due to inactivation or loss of PINK1 in human DA neurons.
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Affiliation(s)
- Hu Wang
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
| | - Rong Chen
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
| | - Liming Xiao
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
| | - Manoj Kumar
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
| | - Jesús Acevedo-Cintrón
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
| | - Joanna Siuda
- Department of Neurology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Dariusz Koziorowski
- Department of Neurology, Faculty of Health Science, Medical University of Warsaw, Warsaw, Poland
| | | | - Valina L. Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685, USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685, USA
| | - Ted M. Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA 21205
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685, USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685, USA
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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9
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Pauwels EKJ, Boer GJ. Parkinson's Disease: A Tale of Many Players. Med Princ Pract 2023; 32:155-165. [PMID: 37285828 PMCID: PMC10601631 DOI: 10.1159/000531422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/01/2023] [Indexed: 06/09/2023] Open
Abstract
In 2020, more than 9 million patients suffering from Parkinson's disease (PD) were reported worldwide, and studies predict that the burden of this disease will grow substantially in industrial countries. In the last decade, there has been a better understanding of this neurodegenerative disorder, clinically characterized by motor disturbances, impaired balance, coordination, memory difficulties, and behavioral changes. Various preclinical investigations and studies on human postmortem brains suggest that local oxidative stress and inflammation promote misfolding and aggregation of alpha-synuclein within Lewy bodies and cause nerve cell damage. Parallel to these investigations, the familial contribution to the disease became evident from studies on genome-wide association in which specific genetic defects were linked to neuritic alpha-synuclein pathology. As for treatment, currently available pharmacological and surgical interventions may improve the quality of life but do not stop the progress of neurodegeneration. However, numerous preclinical studies have provided insights into the pathogenesis of PD. Their results provide a solid base for clinical trials and further developments. In this review, we discuss the pathogenesis, the prospects, and challenges of synolytic therapy, CRISPR, gene editing, and gene- and cell-based therapy. We also throw light on the recent observation that targeted physiotherapy may help improve the gait and other motor impairments.
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Affiliation(s)
| | - Gerard J. Boer
- Netherlands Institute for Brain Research, Royal Academy of Arts and Sciences, Amsterdam, The Netherlands
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10
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Abstract
Neurons are markedly compartmentalized, which makes them reliant on axonal transport to maintain their health. Axonal transport is important for anterograde delivery of newly synthesized macromolecules and organelles from the cell body to the synapse and for the retrograde delivery of signaling endosomes and autophagosomes for degradation. Dysregulation of axonal transport occurs early in neurodegenerative diseases and plays a key role in axonal degeneration. Here, we provide an overview of mechanisms for regulation of axonal transport; discuss how these mechanisms are disrupted in neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, Huntington's disease, hereditary spastic paraplegia, amyotrophic lateral sclerosis, and Charcot-Marie-Tooth disease; and discuss therapeutic approaches targeting axonal transport.
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11
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Wu Y, Chen L, Qiu Z, Zhang X, Zhao G, Lu Z. PINK1 protects against dendritic cell dysfunction during sepsis through the regulation of mitochondrial quality control. Mol Med 2023; 29:25. [PMID: 36809929 PMCID: PMC9945621 DOI: 10.1186/s10020-023-00618-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 02/10/2023] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND Dendritic cell (DC) dysfunction plays a central role in sepsis-induced immunosuppression. Recent research has indicated that collective mitochondrial fragmentation contributes to the dysfunction of immune cells observed during sepsis. PTEN-induced putative kinase 1 (PINK1) has been characterized as a guide for impaired mitochondria that can keep mitochondrial homeostasis. However, its role in the function of DCs during sepsis and the related mechanisms remain obscure. In our study, we elucidated the effect of PINK1 on DC function during sepsis and its underlying mechanism of action. METHODS Cecal ligation and puncture (CLP) surgery and lipopolysaccharide (LPS) treatment were used as in vivo and in vitro sepsis models, respectively. RESULTS We found that changes in mitochondrial PINK1 expression of DCs paralleled changes in DC function during sepsis. The ratio of DCs expressing MHC-II, CD86, and CD80, the mRNAs level of dendritic cells expressing TNF-α and IL-12, and the level of DC-mediated T-cell proliferation were all decreased, both in vivo and in vitro during sepsis, when PINK1 was knocked out. This suggested that PINK1 knockout prevented the function of DCs during sepsis. Furthermore, PINK1 knockout inhibited Parkin RBR E3 ubiquitin protein (Parkin)-dependent mitophagy and enhanced dynamin-related protein 1 (Drp1)-related mitochondrial fission, and the negative effects of PINK1 knockout on DC function following LPS treatment were reversed by Parkin activation and Drp1 inhibitor. Knockout of PINK1 also increased apoptosis of DCs and the mortality of CLP mice. CONCLUSION Our results indicated that PINK1 protected against DC dysfunction during sepsis through the regulation of mitochondrial quality control.
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Affiliation(s)
- You Wu
- Department of Emergency, First Affiliated Hospital of Wenzhou Medical University, Shangcai Road, Ouhai District, Wenzhou, 325000, Zhejiang, China.,Department of Critical Care Medicine, Xijing Hospital, Xi'an, 710000, Shaanxi, China
| | - Longwang Chen
- Department of Emergency, First Affiliated Hospital of Wenzhou Medical University, Shangcai Road, Ouhai District, Wenzhou, 325000, Zhejiang, China
| | - Zhimin Qiu
- Department of Emergency, First Affiliated Hospital of Wenzhou Medical University, Shangcai Road, Ouhai District, Wenzhou, 325000, Zhejiang, China
| | - Xijing Zhang
- Department of Critical Care Medicine, Xijing Hospital, Xi'an, 710000, Shaanxi, China
| | - Guangju Zhao
- Department of Emergency, First Affiliated Hospital of Wenzhou Medical University, Shangcai Road, Ouhai District, Wenzhou, 325000, Zhejiang, China.
| | - Zhongqiu Lu
- Department of Emergency, First Affiliated Hospital of Wenzhou Medical University, Shangcai Road, Ouhai District, Wenzhou, 325000, Zhejiang, China.
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12
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Esteras N, Abramov AY. Nrf2 as a regulator of mitochondrial function: Energy metabolism and beyond. Free Radic Biol Med 2022; 189:136-153. [PMID: 35918014 DOI: 10.1016/j.freeradbiomed.2022.07.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/20/2022] [Accepted: 07/19/2022] [Indexed: 12/14/2022]
Abstract
Mitochondria are unique and essential organelles that mediate many vital cellular processes including energy metabolism and cell death. The transcription factor Nrf2 (NF-E2 p45-related factor 2) has emerged in the last few years as an important modulator of multiple aspects of mitochondrial function. Well-known for controlling cellular redox homeostasis, the cytoprotective effects of Nrf2 extend beyond its ability to regulate a diverse network of antioxidant and detoxification enzymes. Here, we review the role of Nrf2 in the regulation of mitochondrial function and structure. We focus on Nrf2 involvement in promoting mitochondrial quality control and regulation of basic aspects of mitochondrial function, including energy production, reactive oxygen species generation, calcium signalling, and cell death induction. Given the importance of mitochondria in the development of multiple diseases, these findings reinforce the pharmacological activation of Nrf2 as an attractive strategy to counteract mitochondrial dysfunction.
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Affiliation(s)
- Noemí Esteras
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Queen Square, London, UK.
| | - Andrey Y Abramov
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Queen Square, London, UK.
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13
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Agarwal A, Alam MF, Basu B, Pattanayak S, Asthana S, Syed GH, Kalia M, Vrati S. Japanese Encephalitis Virus NS4A Protein Interacts with PTEN-Induced Kinase 1 (PINK1) and Promotes Mitophagy in Infected Cells. Microbiol Spectr 2022; 10:e0083022. [PMID: 35604158 PMCID: PMC9241661 DOI: 10.1128/spectrum.00830-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/26/2022] [Indexed: 11/20/2022] Open
Abstract
The nonstructural protein 4A (NS4A) of flaviviruses has been implicated as a "central organizer" of the membrane-bound replication complex during virus replication. However, its role in the host responses to virus infection is not understood. Using the yeast-two-hybrid library screen, we identified a multitude of host proteins interacting with the Japanese encephalitis virus (JEV) NS4A protein. Several of these interacting proteins are known to localize to the mitochondria. One of these proteins was PTEN-induced kinase 1 (PINK1), a serine/threonine-protein kinase known for its role in mitophagy. Here, we demonstrate the JEV-NS4A localization to the mitochondria and its interaction with PINK1 in Huh7 cells during JEV infection. The JEV-infected cells showed an enhanced mitophagy flux with a concomitant decline in the mitochondrial mass. We present data showing that JEV-NS4A alone was sufficient to induce mitophagy. Interference with mitochondrial fragmentation and mitophagy resulted in reduced virus propagation. Overall, our study provides the first evidence of mitochondrial quality control dysregulation during JEV infection, largely mediated by its NS4A protein. IMPORTANCE The JEV-infected mammalian cells show an enhanced mitophagy flux with a concomitant decline in the mitochondrial mass. We show that the NS4A protein of JEV localized to the mitochondria and interacted with PINK1 in Huh7 cells during infection with the virus and demonstrate that JEV-NS4A alone is sufficient to induce mitophagy. The study provides the first evidence of mitochondrial quality control dysregulation during JEV infection, largely mediated by its NS4A protein.
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Affiliation(s)
- Anshu Agarwal
- Translational Health Science and Technology Institute, Faridabad, India
| | - Mohd. Faraz Alam
- Institute of Life Sciences, Bhubaneswar, India
- Regional Centre for Biotechnology, Faridabad, India
| | | | | | | | | | - Manjula Kalia
- Translational Health Science and Technology Institute, Faridabad, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Sudhanshu Vrati
- Translational Health Science and Technology Institute, Faridabad, India
- Regional Centre for Biotechnology, Faridabad, India
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14
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New pathogenic insights from large animal models of neurodegenerative diseases. Protein Cell 2022; 13:707-720. [PMID: 35334073 PMCID: PMC9233730 DOI: 10.1007/s13238-022-00912-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/23/2022] [Indexed: 12/12/2022] Open
Abstract
Animal models are essential for investigating the pathogenesis and developing the treatment of human diseases. Identification of genetic mutations responsible for neurodegenerative diseases has enabled the creation of a large number of small animal models that mimic genetic defects found in the affected individuals. Of the current animal models, rodents with genetic modifications are the most commonly used animal models and provided important insights into pathogenesis. However, most of genetically modified rodent models lack overt neurodegeneration, imposing challenges and obstacles in utilizing them to rigorously test the therapeutic effects on neurodegeneration. Recent studies that used CRISPR/Cas9-targeted large animal (pigs and monkeys) have uncovered important pathological events that resemble neurodegeneration in the patient’s brain but could not be produced in small animal models. Here we highlight the unique nature of large animals to model neurodegenerative diseases as well as the limitations and challenges in establishing large animal models of neurodegenerative diseases, with focus on Huntington disease, Amyotrophic lateral sclerosis, and Parkinson diseases. We also discuss how to use the important pathogenic insights from large animal models to make rodent models more capable of recapitulating important pathological features of neurodegenerative diseases.
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15
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Huang SS, Sheng YC, Jiang YY, Liu N, Lin MM, Wu JC, Liang ZQ, Qin ZH, Wang Y. TIGAR plays neuroprotective roles in KA-induced excitotoxicity through reducing neuroinflammation and improving mitochondrial function. Neurochem Int 2021; 152:105244. [PMID: 34826530 DOI: 10.1016/j.neuint.2021.105244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 10/30/2021] [Accepted: 11/19/2021] [Indexed: 02/05/2023]
Abstract
Excitotoxicity refers to the ability of excessive extracellular excitatory amino acids to damage neurons via receptor activation. It is a crucial pathogenetic process in neurodegenerative diseases. TP53 is confirmed to be involved in excitotoxicity. It is demonstrated that TP53 induced glycolysis and apoptotic regulator (TIGAR)-regulated metabolic pathway can protect against neuronal injury. However, the role of TIGAR in excitotoxicity and specific mechanisms is still unknown. In this study, an in vivo excitotoxicity model was constructed via stereotypical kainic acid (KA) injection into the striatum of mice. KA reduced TIGAR expression levels, neuroinflammatory responses and mitochondrial dysfunction. TIGAR overexpression could reverse KA-induced neuronal injury by reducing neuroinflammation and improving mitochondrial function, thereby exerting neuroprotective effects. Therefore, this study could provide a potential therapeutic target for neurodegenerative diseases.
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Affiliation(s)
- Si-Si Huang
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yi-Chao Sheng
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yi-Yue Jiang
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Na Liu
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Miao-Miao Lin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Jun-Chao Wu
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Zhong-Qin Liang
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Zheng-Hong Qin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yan Wang
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
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16
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Affiliation(s)
- Zhiyu Sun
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Jiangyu Ye
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Junying Yuan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China.
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17
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PINK1 kinase dysfunction triggers neurodegeneration in the primate brain without impacting mitochondrial homeostasis. Protein Cell 2021; 13:26-46. [PMID: 34800266 PMCID: PMC8776976 DOI: 10.1007/s13238-021-00888-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/30/2021] [Indexed: 12/30/2022] Open
Abstract
In vitro studies have established the prevalent theory that the mitochondrial kinase PINK1 protects neurodegeneration by removing damaged mitochondria in Parkinson's disease (PD). However, difficulty in detecting endogenous PINK1 protein in rodent brains and cell lines has prevented the rigorous investigation of the in vivo role of PINK1. Here we report that PINK1 kinase form is selectively expressed in the human and monkey brains. CRISPR/Cas9-mediated deficiency of PINK1 causes similar neurodegeneration in the brains of fetal and adult monkeys as well as cultured monkey neurons without affecting mitochondrial protein expression and morphology. Importantly, PINK1 mutations in the primate brain and human cells reduce protein phosphorylation that is important for neuronal function and survival. Our findings suggest that PINK1 kinase activity rather than its mitochondrial function is essential for the neuronal survival in the primate brains and that its kinase dysfunction could be involved in the pathogenesis of PD.
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18
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Disruption of Mitochondrial Homeostasis: The Role of PINK1 in Parkinson's Disease. Cells 2021; 10:cells10113022. [PMID: 34831247 PMCID: PMC8616241 DOI: 10.3390/cells10113022] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/18/2022] Open
Abstract
The progressive reduction of the dopaminergic neurons of the substantia nigra is the fundamental process underlying Parkinson’s disease (PD), while the mechanism of susceptibility of this specific neuronal population is largely unclear. Disturbances in mitochondrial function have been recognized as one of the main pathways in sporadic PD since the finding of respiratory chain impairment in animal models of PD. Studies on genetic forms of PD have provided new insight on the role of mitochondrial bioenergetics, homeostasis, and autophagy. PINK1 (PTEN-induced putative kinase 1) gene mutations, although rare, are the second most common cause of recessively inherited early-onset PD, after Parkin gene mutations. Our knowledge of PINK1 and Parkin function has increased dramatically in the last years, with the discovery that a process called mitophagy, which plays a key role in the maintenance of mitochondrial health, is mediated by the PINK1/Parkin pathway. In vitro and in vivo models have been developed, supporting the role of PINK1 in synaptic transmission, particularly affecting dopaminergic neurons. It is of paramount importance to further define the role of PINK1 in mitophagy and mitochondrial homeostasis in PD pathogenesis in order to delineate novel therapeutic targets.
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19
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Mitochondrial fission, integrity and completion of mitophagy require separable functions of Vps13D in Drosophila neurons. PLoS Genet 2021; 17:e1009731. [PMID: 34383748 PMCID: PMC8384225 DOI: 10.1371/journal.pgen.1009731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/24/2021] [Accepted: 07/21/2021] [Indexed: 11/19/2022] Open
Abstract
A healthy population of mitochondria, maintained by proper fission, fusion, and degradation, is critical for the long-term survival and function of neurons. Here, our discovery of mitophagy intermediates in fission-impaired Drosophila neurons brings new perspective into the relationship between mitochondrial fission and mitophagy. Neurons lacking either the ataxia disease gene Vps13D or the dynamin related protein Drp1 contain enlarged mitochondria that are engaged with autophagy machinery and also lack matrix components. Reporter assays combined with genetic studies imply that mitophagy both initiates and is completed in Drp1 impaired neurons, but fails to complete in Vps13D impaired neurons, which accumulate compromised mitochondria within stalled mito-phagophores. Our findings imply that in fission-defective neurons, mitophagy becomes induced, and that the lipid channel containing protein Vps13D has separable functions in mitochondrial fission and phagophore elongation.
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20
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Doblado L, Lueck C, Rey C, Samhan-Arias AK, Prieto I, Stacchiotti A, Monsalve M. Mitophagy in Human Diseases. Int J Mol Sci 2021; 22:ijms22083903. [PMID: 33918863 PMCID: PMC8069949 DOI: 10.3390/ijms22083903] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
Mitophagy is a selective autophagic process, essential for cellular homeostasis, that eliminates dysfunctional mitochondria. Activated by inner membrane depolarization, it plays an important role during development and is fundamental in highly differentiated post-mitotic cells that are highly dependent on aerobic metabolism, such as neurons, muscle cells, and hepatocytes. Both defective and excessive mitophagy have been proposed to contribute to age-related neurodegenerative diseases, such as Parkinson’s and Alzheimer’s diseases, metabolic diseases, vascular complications of diabetes, myocardial injury, muscle dystrophy, and liver disease, among others. Pharmacological or dietary interventions that restore mitophagy homeostasis and facilitate the elimination of irreversibly damaged mitochondria, thus, could serve as potential therapies in several chronic diseases. However, despite extraordinary advances in this field, mainly derived from in vitro and preclinical animal models, human applications based on the regulation of mitochondrial quality in patients have not yet been approved. In this review, we summarize the key selective mitochondrial autophagy pathways and their role in prevalent chronic human diseases and highlight the potential use of specific interventions.
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Affiliation(s)
- Laura Doblado
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Claudia Lueck
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Claudia Rey
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Alejandro K. Samhan-Arias
- Department of Biochemistry, Universidad Autónoma de Madrid e Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain;
| | - Ignacio Prieto
- Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Isaac Peral 42, 28015 Madrid, Spain;
| | - Alessandra Stacchiotti
- Department of Biomedical Sciences for Health, Universita’ Degli Studi di Milano, Via Mangiagalli 31, 20133 Milan, Italy
- U.O. Laboratorio di Morfologia Umana Applicata, IRCCS Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
- Correspondence: (A.S.); (M.M.)
| | - Maria Monsalve
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
- Correspondence: (A.S.); (M.M.)
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21
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Wu X, Gong L, Xie L, Gu W, Wang X, Liu Z, Li S. NLRP3 Deficiency Protects Against Intermittent Hypoxia-Induced Neuroinflammation and Mitochondrial ROS by Promoting the PINK1-Parkin Pathway of Mitophagy in a Murine Model of Sleep Apnea. Front Immunol 2021; 12:628168. [PMID: 33717152 PMCID: PMC7943742 DOI: 10.3389/fimmu.2021.628168] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/12/2021] [Indexed: 12/15/2022] Open
Abstract
Obstructive sleep apnea (OSA) associated neurocognitive impairment is mainly caused by chronic intermittent hypoxia (CIH)-triggered neuroinflammation and oxidative stress. Previous study has demonstrated that mitochondrial reactive oxygen species (mtROS) was pivotal for hypoxia-related tissue injury. As a cytosolic multiprotein complex that participates in various inflammatory and neurodegenerative diseases, NLRP3 inflammasome could be activated by mtROS and thereby affected by the mitochondria-selective autophagy. However, the role of NLRP3 and possible mitophagy mechanism in CIH-elicited neuroinflammation remain to be elucidated. Compared with wild-type mice, NLRP3 deficiency protected them from CIH-induced neuronal damage, as indicated by the restoration of fear-conditioning test results and amelioration of neuron apoptosis. In addition, NLRP3 knockout mice displayed the mitigated microglia activation that elicited by CIH, concomitantly with elimination of damaged mitochondria and reduction of oxidative stress levels (malondialdehyde and superoxide dismutase). Elevated LC3 and beclin1 expressions were remarkably observed in CIH group. In vitro experiments, intermittent hypoxia (IH) significantly facilitated mitophagy induction and NLRP3 inflammasome activation in microglial (BV2) cells. Moreover, IH enhanced the accumulation of damaged mitochondria, increased mitochondrial depolarization and augmented mtROS release. Consistently, NLRP3 deletion elicited a protective phenotype against IH through enhancement of Parkin-mediated mitophagy. Furthermore, Parkin deletion or pretreated with 3MA (autophagy inhibitor) exacerbated these detrimental actions of IH, which was accompanied with NLRP3 inflammasome activation. These results revealed NLRP3 deficiency acted as a protective promotor through enhancing Parkin-depended mitophagy in CIH-induced neuroinflammation. Thus, NLRP3 gene knockout or pharmacological blockage could be as a potential therapeutic strategy for OSA-associated neurocognitive impairment.
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Affiliation(s)
- Xu Wu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Clinical Centre for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Linjing Gong
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liang Xie
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Clinical Centre for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenyu Gu
- Department of Urology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xinyuan Wang
- Department of Orthopaedics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zilong Liu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Clinical Centre for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shanqun Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Clinical Centre for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, China
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22
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Mani S, Swargiary G, Chadha R. Mitophagy impairment in neurodegenerative diseases: Pathogenesis and therapeutic interventions. Mitochondrion 2021; 57:270-293. [PMID: 33476770 DOI: 10.1016/j.mito.2021.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/23/2020] [Accepted: 01/14/2021] [Indexed: 02/07/2023]
Abstract
Neurons are specialized cells, requiring a lot of energy for its proper functioning. Mitochondria are the key cellular organelles and produce most of the energy in the form of ATP, required for all the crucial functions of neurons. Hence, the regulation of mitochondrial biogenesis and quality control is important for maintaining neuronal health. As a part of mitochondrial quality control, the aged and damaged mitochondria are removed through a selective mode of autophagy called mitophagy. However, in different pathological conditions, this process is impaired in neuronal cells and lead to a variety of neurodegenerative disease (NDD). Various studies indicate that specific protein aggregates, the characteristics of different NDDs, affect this process of mitophagy, adding to the severity and progression of diseases. Though, the detailed process of this association is yet to be explored. In light of the significant role of impaired mitophagy in NDDs, further studies have also investigated a large number of therapeutic strategies to target mitophagy in these diseases. Our current review summarizes the abnormalities in different mitophagy pathways and their association with different NDDs. We have also elaborated upon various novel therapeutic strategies and their limitations to enhance mitophagy in NDDs that may help in the management of symptoms and increasing the life expectancy of NDD patients. Thus, our study provides an overview of mitophagy in NDDs and emphasizes the need to elucidate the mechanism of impaired mitophagy prevalent across different NDDs in future research. This will help designing better treatment options with high efficacy and specificity.
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Affiliation(s)
- Shalini Mani
- Department of Biotechnology, Centre for Emerging Disease, Jaypee Institute of Information Technology, Noida, India.
| | - Geeta Swargiary
- Department of Biotechnology, Centre for Emerging Disease, Jaypee Institute of Information Technology, Noida, India
| | - Radhika Chadha
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, USA
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23
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Bus C, Zizmare L, Feldkaemper M, Geisler S, Zarani M, Schaedler A, Klose F, Admard J, Mageean CJ, Arena G, Fallier-Becker P, Ugun-Klusek A, Maruszczak KK, Kapolou K, Schmid B, Rapaport D, Ueffing M, Casadei N, Krüger R, Gasser T, Vogt Weisenhorn DM, Kahle PJ, Trautwein C, Gloeckner CJ, Fitzgerald JC. Human Dopaminergic Neurons Lacking PINK1 Exhibit Disrupted Dopamine Metabolism Related to Vitamin B6 Co-Factors. iScience 2020; 23:101797. [PMID: 33299968 PMCID: PMC7702004 DOI: 10.1016/j.isci.2020.101797] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/07/2020] [Accepted: 11/10/2020] [Indexed: 01/17/2023] Open
Abstract
PINK1 loss-of-function mutations cause early onset Parkinson disease. PINK1-Parkin mediated mitophagy has been well studied, but the relevance of the endogenous process in the brain is debated. Here, the absence of PINK1 in human dopaminergic neurons inhibits ionophore-induced mitophagy and reduces mitochondrial membrane potential. Compensatory, mitochondrial renewal maintains mitochondrial morphology and protects the respiratory chain. This is paralleled by metabolic changes, including inhibition of the TCA cycle enzyme mAconitase, accumulation of NAD+, and metabolite depletion. Loss of PINK1 disrupts dopamine metabolism by critically affecting its synthesis and uptake. The mechanism involves steering of key amino acids toward energy production rather than neurotransmitter metabolism and involves cofactors related to the vitamin B6 salvage pathway identified using unbiased multi-omics approaches. We propose that reduction of mitochondrial membrane potential that cannot be controlled by PINK1 signaling initiates metabolic compensation that has neurometabolic consequences relevant to Parkinson disease. PINK1 KO hDANs do not undergo ionophore-induced mitophagy yet CI remains active PINK1 KO impacts the TCA cycle via mAconitase leading to depletion of key amino acids PINK1 KO silences PNPO, which provides essential biological co-factors Dopamine pools and neurotransmitter uptake are reduced by PINK1 loss of function
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Affiliation(s)
- Christine Bus
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany.,DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Laimdota Zizmare
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University of Tübingen, Tübingen, Germany
| | - Marita Feldkaemper
- Institute for Ophthalmic Research, Centre for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Sven Geisler
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany
| | - Maria Zarani
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany
| | - Anna Schaedler
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany.,Graduate School of Cellular and Molecular Neuroscience, University of Tübingen, Tübingen, Germany
| | - Franziska Klose
- Core Facility for Medical Bioanalytics, University of Tübingen, Center for Ophthalmology, Institute for Ophthalmic Research, Tübingen, Germany
| | - Jakob Admard
- NGS Competence Center Tübingen, Institute of Medical Genetics and Applied Genomics, University of Tübingen, Germany
| | - Craig J Mageean
- DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany.,Core Facility for Medical Bioanalytics, University of Tübingen, Center for Ophthalmology, Institute for Ophthalmic Research, Tübingen, Germany
| | - Giuseppe Arena
- Translational Neuroscience, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Luxembourg
| | - Petra Fallier-Becker
- Institute of Pathology and Neuropathology, University of Tübingen, Tübingen, Germany
| | - Aslihan Ugun-Klusek
- School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Klaudia K Maruszczak
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Konstantina Kapolou
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany.,Graduate School of Cellular and Molecular Neuroscience, University of Tübingen, Tübingen, Germany
| | - Benjamin Schmid
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany
| | - Doron Rapaport
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Marius Ueffing
- Institute for Ophthalmic Research, Centre for Ophthalmology, University of Tübingen, Tübingen, Germany.,Core Facility for Medical Bioanalytics, University of Tübingen, Center for Ophthalmology, Institute for Ophthalmic Research, Tübingen, Germany
| | - Nicolas Casadei
- NGS Competence Center Tübingen, Institute of Medical Genetics and Applied Genomics, University of Tübingen, Germany
| | - Rejko Krüger
- Translational Neuroscience, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Luxembourg.,Transversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg
| | - Thomas Gasser
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany.,DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Daniela M Vogt Weisenhorn
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Developmental Genetics, Munich-Neuherberg, Germany
| | - Philipp J Kahle
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany.,DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Christoph Trautwein
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University of Tübingen, Tübingen, Germany
| | - Christian J Gloeckner
- DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany.,Core Facility for Medical Bioanalytics, University of Tübingen, Center for Ophthalmology, Institute for Ophthalmic Research, Tübingen, Germany
| | - Julia C Fitzgerald
- Department of Neurodegenerative Diseases, Centre of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Otfried Müller Strasse 27, 72076, Tübingen, Germany
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Chen Y, Zhang P, Lin X, Zhang H, Miao J, Zhou Y, Chen G. Mitophagy impairment is involved in sevoflurane-induced cognitive dysfunction in aged rats. Aging (Albany NY) 2020; 12:17235-17256. [PMID: 32903215 PMCID: PMC7521530 DOI: 10.18632/aging.103673] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 07/02/2020] [Indexed: 01/24/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is frequently observed in elderly patients following anesthesia, but its pathophysiological mechanisms have not been fully elucidated. Sevoflurane was reported to repress autophagy in aged rat neurons; however, the role of mitophagy, which is crucial for the control of mitochondrial quality and neuronal health, in sevoflurane-induced POCD in aged rats remains undetermined. Therefore, this study investigated whether mitophagy impairment is involved in sevoflurane-induced cognitive dysfunction. We found sevoflurane treatment inhibited mitochondrial respiration and mitophagic flux, changes in mitochondria morphology, impaired lysosomal acidification, and increased Tomm20 and deceased LAMP1 accumulation were observed in H4 cell and aged rat models. Rapamycin counteracted ROS induced by sevoflurane, restored mitophagy and improved mitochondrial function. Furthermore, rapamycin ameliorated the cognitive deficits observed in aged rats given sevoflurane anesthesia as determined by the Morris water maze test; this improvement was associated with an increased number of dendritic spines and pyramidal neurons. Overexpression of PARK2, but not mutant PARK2 lacking enzyme activity, in H4 cells decreased ROS and Tomm20 accumulation and reversed mitophagy dysfunction after sevoflurane treatment. These findings suggest that mitophagy dysfunction could be a mechanism underlying sevoflurane-induced POCD and that activating mitophagy may provide a new strategy to rescue cognitive deficits.
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Affiliation(s)
- Yeru Chen
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Piao Zhang
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Xianyi Lin
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Huan Zhang
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Jiamin Miao
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Youfa Zhou
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Gang Chen
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China
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25
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Kumar M, Acevedo-Cintrón J, Jhaldiyal A, Wang H, Andrabi SA, Eacker S, Karuppagounder SS, Brahmachari S, Chen R, Kim H, Ko HS, Dawson VL, Dawson TM. Defects in Mitochondrial Biogenesis Drive Mitochondrial Alterations in PARKIN-Deficient Human Dopamine Neurons. Stem Cell Reports 2020; 15:629-645. [PMID: 32795422 PMCID: PMC7486221 DOI: 10.1016/j.stemcr.2020.07.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/20/2022] Open
Abstract
Mutations and loss of activity in PARKIN, an E3 ubiquitin ligase, play a role in the pathogenesis of Parkinson's disease (PD). PARKIN regulates many aspects of mitochondrial quality control including mitochondrial autophagy (mitophagy) and mitochondrial biogenesis. Defects in mitophagy have been hypothesized to play a predominant role in the loss of dopamine (DA) neurons in PD. Here, we show that although there are defects in mitophagy in human DA neurons lacking PARKIN, the mitochondrial deficits are primarily due to defects in mitochondrial biogenesis that are driven by the upregulation of PARIS and the subsequent downregulation of PGC-1α. CRISPR/Cas9 knockdown of PARIS completely restores the mitochondrial biogenesis defects and mitochondrial function without affecting the deficits in mitophagy. These results highlight the importance mitochondrial biogenesis versus mitophagy in the pathogenesis of PD due to inactivation or loss of PARKIN in human DA neurons.
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Affiliation(s)
- Manoj Kumar
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jesús Acevedo-Cintrón
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Aanishaa Jhaldiyal
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hu Wang
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shaida A Andrabi
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephen Eacker
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Senthilkumar S Karuppagounder
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Saurav Brahmachari
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Rong Chen
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hyesoo Kim
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Han Seok Ko
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Valina L Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685, USA; Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685, USA.
| | - Ted M Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685, USA; Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685, USA.
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26
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Pirooznia SK, Yuan C, Khan MR, Karuppagounder SS, Wang L, Xiong Y, Kang SU, Lee Y, Dawson VL, Dawson TM. PARIS induced defects in mitochondrial biogenesis drive dopamine neuron loss under conditions of parkin or PINK1 deficiency. Mol Neurodegener 2020; 15:17. [PMID: 32138754 PMCID: PMC7057660 DOI: 10.1186/s13024-020-00363-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 02/13/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Mutations in PINK1 and parkin cause autosomal recessive Parkinson's disease (PD). Evidence placing PINK1 and parkin in common pathways regulating multiple aspects of mitochondrial quality control is burgeoning. However, compelling evidence to causatively link specific PINK1/parkin dependent mitochondrial pathways to dopamine neuron degeneration in PD is lacking. Although PINK1 and parkin are known to regulate mitophagy, emerging data suggest that defects in mitophagy are unlikely to be of pathological relevance. Mitochondrial functions of PINK1 and parkin are also tied to their proteasomal regulation of specific substrates. In this study, we examined how PINK1/parkin mediated regulation of the pathogenic substrate PARIS impacts dopaminergic mitochondrial network homeostasis and neuronal survival in Drosophila. METHODS The UAS-Gal4 system was employed for cell-type specific expression of the various transgenes. Effects on dopamine neuronal survival and function were assessed by anti-TH immunostaining and negative geotaxis assays. Mitochondrial effects were probed by quantitative analysis of mito-GFP labeled dopaminergic mitochondria, assessment of mitochondrial abundance in dopamine neurons isolated by Fluorescence Activated Cell Sorting (FACS) and qRT-PCR analysis of dopaminergic factors that promote mitochondrial biogenesis. Statistical analyses employed two-tailed Student's T-test, one-way or two-way ANOVA as required and data considered significant when P < 0.05. RESULTS We show that defects in mitochondrial biogenesis drive adult onset progressive loss of dopamine neurons and motor deficits in Drosophila models of PINK1 or parkin insufficiency. Such defects result from PARIS dependent repression of dopaminergic PGC-1α and its downstream transcription factors NRF1 and TFAM that cooperatively promote mitochondrial biogenesis. Dopaminergic accumulation of human or Drosophila PARIS recapitulates these neurodegenerative phenotypes that are effectively reversed by PINK1, parkin or PGC-1α overexpression in vivo. To our knowledge, PARIS is the only co-substrate of PINK1 and parkin to specifically accumulate in the DA neurons and cause neurodegeneration and locomotor defects stemming from disrupted dopamine signaling. CONCLUSIONS Our findings identify a highly conserved role for PINK1 and parkin in regulating mitochondrial biogenesis and promoting mitochondrial health via the PARIS/ PGC-1α axis. The Drosophila models described here effectively recapitulate the cardinal PD phenotypes and thus will facilitate identification of novel regulators of mitochondrial biogenesis for physiologically relevant therapeutic interventions.
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Affiliation(s)
- Sheila K. Pirooznia
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
| | - Changqing Yuan
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
| | - Mohammed Repon Khan
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
| | - Senthilkumar S. Karuppagounder
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
| | - Luan Wang
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
| | - Yulan Xiong
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506 USA
| | - Sung Ung Kang
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
| | - Yunjong Lee
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
| | - Valina L. Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Departments of Physiology, Baltimore, USA
- Solomon H. Snyder Department of Neuroscience, Baltimore, USA
| | - Ted M. Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 North Broadway, Suite 731, Baltimore, MD 21205 USA
- Departments of Neurology, Iowa City, USA
- Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130-2685 USA
- Solomon H. Snyder Department of Neuroscience, Baltimore, USA
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
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27
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Chan ST, McCarthy MJ, Vawter MP. Psychiatric drugs impact mitochondrial function in brain and other tissues. Schizophr Res 2020; 217:136-147. [PMID: 31744750 PMCID: PMC7228833 DOI: 10.1016/j.schres.2019.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 09/14/2019] [Accepted: 09/16/2019] [Indexed: 12/31/2022]
Abstract
Mitochondria have been linked to the etiology of schizophrenia (SZ). However, studies of mitochondria in SZ might be confounded by the effects of pharmacological treatment with antipsychotic drugs (APDs) and other common medications. This review summarizes findings on relevant mitochondria mechanisms underlying SZ, and the potential impact of psychoactive drugs including primarily APDs, but also antidepressants and anxiolytics. The summarized data suggest that APDs impair mitochondria function by decreasing Complex I activity and ATP production and dissipation of the mitochondria membrane potential. At the same time, in the brains of patients with SZ, antipsychotic drug treatment normalizes gene expression modules enriched in mitochondrial genes that are decreased in SZ. This indicates that APDs may have both positive and negative effects on mitochondria. The available evidence suggests three conclusions i) alterations in mitochondria functions in SZ exist prior to APD treatment, ii) mitochondria alterations in SZ can be reversed by APD treatment, and iii) APDs directly cause impairment of mitochondria function. Overall, the mechanisms of action of psychiatric drugs on mitochondria are both direct and indirect; we conclude the effects of APDs on mitochondria may contribute to both their therapeutic and metabolic side effects. These studies support the hypothesis that neuronal mitochondria are an etiological factor in SZ. Moreover, APDs and other drugs must be considered in the evaluation of this pathophysiological role of mitochondria in SZ. Considering these effects, pharmacological actions on mitochondria may be a worthwhile target for further APD development.
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Affiliation(s)
- Shawna T Chan
- Functional Genomics Laboratory, Department of Human Behavior and Psychiatry, University of California, Irvine, USA; School of Medicine University of California, Irvine, USA
| | - Michael J McCarthy
- Psychiatry Service VA San Diego Healthcare System, Department of Psychiatry, University of California, San Diego, USA
| | - Marquis P Vawter
- Functional Genomics Laboratory, Department of Human Behavior and Psychiatry, University of California, Irvine, USA.
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28
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Lee JJ, Andreazza S, Whitworth AJ. The STING pathway does not contribute to behavioural or mitochondrial phenotypes in Drosophila Pink1/parkin or mtDNA mutator models. Sci Rep 2020; 10:2693. [PMID: 32060339 PMCID: PMC7021792 DOI: 10.1038/s41598-020-59647-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/30/2020] [Indexed: 11/09/2022] Open
Abstract
Mutations in PINK1 and Parkin/PRKN cause the degeneration of dopaminergic neurons in familial forms of Parkinson's disease but the precise pathogenic mechanisms are unknown. The PINK1/Parkin pathway has been described to play a central role in mitochondrial homeostasis by signalling the targeted destruction of damaged mitochondria, however, how disrupting this process leads to neuronal death was unclear until recently. An elegant study in mice revealed that the loss of Pink1 or Prkn coupled with an additional mitochondrial stress resulted in the aberrant activation of the innate immune signalling, mediated via the cGAS/STING pathway, causing degeneration of dopaminergic neurons and motor impairment. Genetic knockout of Sting was sufficient to completely prevent neurodegeneration and accompanying motor deficits. To determine whether Sting plays a conserved role in Pink1/parkin related pathology, we tested for genetic interactions between Sting and Pink1/parkin in Drosophila. Surprisingly, we found that loss of Sting, or its downstream effector Relish, was insufficient to suppress the behavioural deficits or mitochondria disruption in the Pink1/parkin mutants. Thus, we conclude that phenotypes associated with loss of Pink1/parkin are not universally due to aberrant activation of the STING pathway.
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Affiliation(s)
- Juliette J Lee
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0XY, United Kingdom
| | - Simonetta Andreazza
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0XY, United Kingdom
| | - Alexander J Whitworth
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0XY, United Kingdom.
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29
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Liu K, Jing M, Liu C, Yan D, Ma Z, Wang C, Deng Y, Liu W, Xu B. Effect of trehalose on manganese‐induced mitochondrial dysfunction and neuronal cell damage in mice. Basic Clin Pharmacol Toxicol 2019; 125:536-547. [DOI: 10.1111/bcpt.13316] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/27/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Kuan Liu
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Meng‐Jiao Jing
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Chang Liu
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Dong‐Ying Yan
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Zhuo Ma
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Can Wang
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Yu Deng
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Wei Liu
- Department of Environmental Health School of Public Health China Medical University Shenyang China
| | - Bin Xu
- Department of Environmental Health School of Public Health China Medical University Shenyang China
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30
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Li R, Chen J. Salidroside Protects Dopaminergic Neurons by Enhancing PINK1/Parkin-Mediated Mitophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:9341018. [PMID: 31583052 PMCID: PMC6754964 DOI: 10.1155/2019/9341018] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/30/2019] [Accepted: 08/09/2019] [Indexed: 12/14/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease characterized by the degeneration of nigrostriatal dopaminergic (DA) neurons. Our previous studies have suggested that salidroside (Sal) might play neuroprotective effects against PD by preserving mitochondrial Complex I activity. However, the exact mechanism of the neuroprotective effect of Sal remains unclear. Growing evidence indicates that PINK1/Parkin-mediated mitophagy is involved in the development of PD. In this study, we investigated whether Sal exerts a neuroprotective effect by modulating PINK1/Parkin-mediated mitophagy. Results showed that Sal alleviated MPTP-induced motor deficits in pole test. Moreover, Sal diminished MPTP-induced degeneration of nigrostriatal DA neurons as evidenced by upregulated TH-positive neurons in the substantia nigra, increased DAT expression, and high dopamine and metabolite levels in the striatum. Furthermore, in comparison with the MPP+/MPTP group, Sal considerably increased the mitophagosome and mitophagy flux. Moreover, in comparison with the MPP+/MPTP group, Sal evidently enhanced the mitochondrial expression of PINK1 and Parkin, accompanied by an increase in the colocalization of mitochondria with Parkin. However, transfection of MN9D cells with PINK1 siRNA reversed Sal-induced activated mitophagy and cytoprotective effect. In conclusion, Sal may confer neuroprotective effects by enhancing PINK1/Parkin-mediated mitophagy in MPP+/MPTP-induced PD models.
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Affiliation(s)
- Ruru Li
- Department of Neurology, The Air Force Hospital of Southern Theater Command, Guangzhou 510062, China
- Department of Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jianzong Chen
- Department of Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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31
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Kim YY, Um JH, Yoon JH, Kim H, Lee DY, Lee YJ, Jee HJ, Kim YM, Jang JS, Jang YG, Chung J, Park HT, Finkel T, Koh H, Yun J. Assessment of mitophagy in mt-Keima Drosophila revealed an essential role of the PINK1-Parkin pathway in mitophagy induction in vivo. FASEB J 2019; 33:9742-9751. [PMID: 31120803 DOI: 10.1096/fj.201900073r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Mitophagy has been implicated in mitochondrial quality control and in various human diseases. However, the study of in vivo mitophagy remains limited. We previously explored in vivo mitophagy using a transgenic mouse expressing the mitochondria-targeted fluorescent protein Keima (mt-Keima). Here, we generated mt-Keima Drosophila to extend our efforts to study mitophagy in vivo. A series of experiments confirmed that mitophagy can be faithfully and quantitatively measured in mt-Keima Drosophila. We also showed that alterations in mitophagy upon environmental and genetic perturbation can be measured in mt-Keima Drosophila. Analysis of different tissues revealed a variation in basal mitophagy levels in Drosophila tissues. In addition, we found a significant increase in mitophagy levels during Drosophila embryogenesis. Importantly, loss-of-function genetic analysis demonstrated that the phosphatase and tensin homolog-induced putative kinase 1 (PINK1)-Parkin pathway is essential for the induction of mitophagy in vivo in response to hypoxic exposure and rotenone treatment. These studies showed that the mt-Keima Drosophila system is a useful tool for understanding the role and molecular mechanism of mitophagy in vivo. In addition, we demonstrated the essential role of the PINK1-Parkin pathway in mitophagy induction in response to mitochondrial dysfunction.-Kim, Y. Y., Um, J.-H., Yoon, J.-H., Kim, H., Lee, D.-Y., Lee, Y. J., Jee, H. J., Kim, Y. M., Jang, J. S., Jang, Y.-G., Chung, J., Park, H. T., Finkel, T., Koh, H., Yun, J. Assessment of mitophagy in mt-Keima Drosophila revealed an essential role of the PINK1-Parkin pathway in mitophagy induction in vivo.
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Affiliation(s)
- Young Yeon Kim
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Jee-Hyun Um
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Jeong-Hyun Yoon
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Hyunjin Kim
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Pharmacology, College of Medicine, Dong-A University, Busan, Korea
| | - Da-Ye Lee
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Yoon Jung Lee
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Hye Jin Jee
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Young Mi Kim
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Jae Sung Jang
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
| | - Yoon-Gu Jang
- National Creative Research Initiatives Center for Energy Homeostasis Regulation, School of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea
| | - Jongkyeong Chung
- National Creative Research Initiatives Center for Energy Homeostasis Regulation, School of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea
| | - Hwan Tae Park
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Molecular Neuroscience, College of Medicine, Dong-A University, Busan, Korea
| | - Toren Finkel
- Department of Medicine, Aging Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Hyongjong Koh
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Pharmacology, College of Medicine, Dong-A University, Busan, Korea
| | - Jeanho Yun
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Korea
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Chen J, Vitetta L. Mitochondria could be a potential key mediator linking the intestinal microbiota to depression. J Cell Biochem 2019; 121:17-24. [PMID: 31385365 DOI: 10.1002/jcb.29311] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022]
Abstract
The intestinal microbiota has been reported to affect depression, a common mental condition with severe health-related consequences. However, what mediates the effect of the intestinal microbiota on depression has not been well elucidated. We summarize the roles of the mitochondria in eliciting beneficial effects on the gut microbiota to ameliorate symptoms of depression. It is well known that mitochondria play a key role in depression. An important pathogenic factor, namely inflammatory response, may adversely impact mitochondrial functionality to maintain cellular homeostasis. Dysfunction of mitochondria not only affects neuronal function but also reduces neuron cell numbers. We posit that the intestinal microbiota could affect neuronal mitochondrial function through short-chain fatty acids such as butyrate. Brain inflammatory processes could also be affected through the modulation of gut permeability and blood lipopolysaccharide levels. Aberrant mitochondria functionality coupled to adverse cellular homeostasis could be a key mediator for the effect of the intestinal microbiota on the progression of depression.
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Affiliation(s)
| | - Luis Vitetta
- Medlab Clinical Ltd, Sydney, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
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Li Y, Cookson MR. Proteomics; applications in familial Parkinson's disease. J Neurochem 2019; 151:446-458. [PMID: 31022302 DOI: 10.1111/jnc.14708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 03/25/2019] [Accepted: 04/16/2019] [Indexed: 12/17/2022]
Abstract
Our understanding of the biological basis of Parkinson's disease (PD) has been greatly improved in recent years by the identification of mutations that lead to inherited PD. One of the strengths of using genetics to try to understand disease biology is that it is inherently unbiased and can be applied at a genome-wide scale. More recently, many studies have used another set of unbiased approaches, proteomics, to query the function of familial PD genes in a variety of contexts. We will discuss some specific examples, including; elucidation of protein-protein interaction networks for two dominantly inherited genes, α-synuclein and leucine rich-repeat kinase 2 (LRRK2); the identification of substrates for three genes for familial PD that are also enzymes, namely LRRK2, pink1, and parkin; and changes in protein abundance that arise downstream to introduction of mutations associated with familial PD. We will also discuss those situations where we can integrate multiple proteomics approaches to nominate deeper networks of inter-related events that outline pathways relevant to inherited PD. This article is part of the Special Issue "Proteomics".
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Affiliation(s)
- Yan Li
- Protein/peptide Sequencing facility, National Institute of Neurological, Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Mark R Cookson
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, Maryland, USA
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Guo T, Liu T, Sun Y, Liu X, Xiong R, Li H, Li Z, Zhang Z, Tian Z, Tian Y. Sonodynamic therapy inhibits palmitate-induced beta cell dysfunction via PINK1/Parkin-dependent mitophagy. Cell Death Dis 2019; 10:457. [PMID: 31186419 PMCID: PMC6560035 DOI: 10.1038/s41419-019-1695-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 12/20/2022]
Abstract
In type 2 diabetes mellitus (T2DM), the overload of glucose and lipids can promote oxidative stress and inflammatory responses and contribute to the failure of beta cells. However, therapies that can modulate the function of beta cells and thus prevent their failure have not been well explored. In this study, beta cell injury model was established with palmitic acid (PA) to simulate the lipotoxicity (high-fat diet) found in T2DM. Sonodynamic therapy (SDT), a novel physicochemical treatment, was applied to treat injured beta cells. We found that SDT had specific effects on mitochondria and induced transient large amount of mitochondrial reactive oxygen species (ROS) production in beta cells. SDT also improved the morphology and function of abnormal mitochondria, inhibited inflammatory response and reduced beta cell dysfunction. The improvement of mitochondria was mediated by PINK1/Parkin-dependent mitophagy. Additionally, SDT rescued the transcription of PINK1 mRNA which was blocked by PA treatment, thus providing abundant PINK1 for mitophagy. Moreover, SDT also increased insulin secretion from beta cells. The protective effects of SDT were abrogated when mitophagy was inhibited by cyclosporin A (CsA). In summary, SDT potently inhibits lipotoxicity-induced beta cell failure via PINK1/Parkin-dependent mitophagy, providing theoretical guidance for T2DM treatment in aspects of islet protection.
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Affiliation(s)
- Tian Guo
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Tianyang Liu
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Yun Sun
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Xianna Liu
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Rongguo Xiong
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - He Li
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Zhitao Li
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China
| | - Zhiguo Zhang
- Laboratory of Photo- and Sono-theranostic Technologies and Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin, 150001, China
| | - Zhen Tian
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China. .,Key Laboratory of Acoustic Photoelectric Magnetic Diagnosis and Treatment of Cardiovascular Diseases in Heilongjiang Province, Harbin, 150081, China.
| | - Ye Tian
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, China. .,Key Laboratory of Acoustic Photoelectric Magnetic Diagnosis and Treatment of Cardiovascular Diseases in Heilongjiang Province, Harbin, 150081, China. .,Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, 150001, China.
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35
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Wang Y, Liu N, Lu B. Mechanisms and roles of mitophagy in neurodegenerative diseases. CNS Neurosci Ther 2019; 25:859-875. [PMID: 31050206 PMCID: PMC6566062 DOI: 10.1111/cns.13140] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/23/2019] [Accepted: 04/06/2019] [Indexed: 12/21/2022] Open
Abstract
Mitochondria are double‐membrane‐encircled organelles existing in most eukaryotic cells and playing important roles in energy production, metabolism, Ca2+ buffering, and cell signaling. Mitophagy is the selective degradation of mitochondria by autophagy. Mitophagy can effectively remove damaged or stressed mitochondria, which is essential for cellular health. Thanks to the implementation of genetics, cell biology, and proteomics approaches, we are beginning to understand the mechanisms of mitophagy, including the roles of ubiquitin‐dependent and receptor‐dependent signals on damaged mitochondria in triggering mitophagy. Mitochondrial dysfunction and defective mitophagy have been broadly associated with neurodegenerative diseases. This review is aimed at summarizing the mechanisms of mitophagy in higher organisms and the roles of mitophagy in the pathogenesis of neurodegenerative diseases. Although many studies have been devoted to elucidating the mitophagy process, a deeper understanding of the mechanisms leading to mitophagy defects in neurodegenerative diseases is required for the development of new therapeutic interventions, taking into account the multifactorial nature of diseases and the phenotypic heterogeneity of patients.
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Affiliation(s)
- Yan Wang
- Department of Pharmacology, College of Pharmaceutical Science, Soochow University, Suzhou, China
| | - Na Liu
- Department of Pharmacology, College of Pharmaceutical Science, Soochow University, Suzhou, China
| | - Bingwei Lu
- Department of Pathology, Stanford University School of Medicine, Stanford, California
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Yang W, Li S, Li XJ. A CRISPR monkey model unravels a unique function of PINK1 in primate brains. Mol Neurodegener 2019; 14:17. [PMID: 31046796 PMCID: PMC6498691 DOI: 10.1186/s13024-019-0321-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/26/2019] [Indexed: 11/10/2022] Open
Abstract
Genetically modified rodent models have been valuable for investigating the pathogenesis of neurodegenerative diseases such as Parkinson's disease (PD). Based on the fact that mutations in the PINK1 gene cause autosomal recessive juvenile parkinsonism, a number of mouse models with deletion of the PINK1 gene were generated. However, these PINK1 knockout mouse models fail to recapitulate the selective and overt neurodegeneration seen in PD patient brains. Recently, we generated a non-human primate model with PINK1 deletion using CRISPR/Cas9. This monkey model shows robust neurodegeneration in various brain regions, different from late-onset neurodegeneration in PD patients. Because of the limited pathological data available from humans carrying PINK1 mutations, the PINK1 mutant monkeys provide us with an important animal model to discuss the unique function of PINK1 that is essential for neuronal survival in primate brains. We also propose that the impairment of this unique function by PINK1 mutations in humans may account for the age-dependent and progressive neurodegeneration.
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Affiliation(s)
- Weili Yang
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, China.,Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Shihua Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Xiao-Jiang Li
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, China. .,Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA.
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Zhang T, Wu P, Budbazar E, Zhu Q, Sun C, Mo J, Peng J, Gospodarev V, Tang J, Shi H, Zhang JH. Mitophagy Reduces Oxidative Stress Via Keap1 (Kelch-Like Epichlorohydrin-Associated Protein 1)/Nrf2 (Nuclear Factor-E2-Related Factor 2)/PHB2 (Prohibitin 2) Pathway After Subarachnoid Hemorrhage in Rats. Stroke 2019; 50:978-988. [PMID: 30890112 PMCID: PMC6433519 DOI: 10.1161/strokeaha.118.021590] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 01/30/2019] [Indexed: 11/16/2022]
Abstract
Background and Purpose- Mitoquinone has been reported as a mitochondria-targeting antioxidant to promote mitophagy in various chronic diseases. Here, our aim was to study the role of mitoquinone in mitophagy activation and oxidative stress-induced neuronal death reduction after subarachnoid hemorrhage (SAH) in rats. Methods- Endovascular perforation was used for SAH model of male Sprague-Dawley rats. Exogenous mitoquinone was injected intraperitoneally 1 hour after SAH. ML385, an inhibitor of Nrf2 (nuclear factor-E2-related factor 2), was given intracerebroventricularly 24 hours before SAH. Small interfering RNA for PHB2 (prohibitin 2) was injected intracerebroventricularly 48 hours before SAH. Nuclear, mitochondrial, and cytoplasmic fractions were gathered using nucleus and mitochondria isolation kits. SAH grade evaluation, short- and long- term neurological function tests, oxidative stress, and apoptosis measurements were performed. Pathway related proteins were investigated with Western blot and immunofluorescence staining. Results- Expression of Keap1 (Kelch-like epichlorohydrin-associated protein 1, 2.84× at 24 hours), Nrf2 (2.78× at 3 hours), and LC3II (light chain 3-II; 1.94× at 24 hours) increased, whereas PHB2 (0.46× at 24 hours) decreased after SAH compared with sham group. Mitoquinone treatment attenuated oxidative stress and neuronal death, both short-term and long-term. Administration of mitoquinone resulted in a decrease in expression of Keap1 (0.33×), Romo1 (reactive oxygen species modulator 1; 0.24×), Bax (B-cell lymphoma-2 associated X protein; 0.31×), Cleaved Caspase-3 (0.29×) and an increase in Nrf2 (2.13×), Bcl-xl (B-cell lymphoma-extra large; 1.67×), PINK1 (phosphatase and tensin-induced kinase 1; 1.67×), Parkin (1.49×), PHB2 (1.60×), and LC3II (1.67×) proteins compared with SAH+vehicle group. ML385 abolished the treatment effects of mitoquinone on behavior and protein levels. PHB2 small interfering RNA reversed the outcomes of mitoquinone administration through reduction in protein expressions downstream of PHB2. Conclusions- Mitoquinone inhibited oxidative stress-related neuronal death by activating mitophagy via Keap1/Nrf2/PHB2 pathway after SAH. Mitoquinone may serve as a potential treatment to relieve brain injury after SAH.
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Affiliation(s)
- Tongyu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Pei Wu
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Enkhjargal Budbazar
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Qiquan Zhu
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Chengmei Sun
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jun Mo
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jianhua Peng
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Vadim Gospodarev
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Huaizhang Shi
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - John H. Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
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Cummins N, Tweedie A, Zuryn S, Bertran-Gonzalez J, Götz J. Disease-associated tau impairs mitophagy by inhibiting Parkin translocation to mitochondria. EMBO J 2019; 38:e99360. [PMID: 30538104 PMCID: PMC6356067 DOI: 10.15252/embj.201899360] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 11/01/2018] [Accepted: 11/09/2018] [Indexed: 12/26/2022] Open
Abstract
Accumulation of the protein tau characterises Alzheimer's disease and other tauopathies, including familial forms of frontotemporal dementia (FTD) that carry pathogenic tau mutations. Another hallmark feature of these diseases is the accumulation of dysfunctional mitochondria. Although disease-associated tau is known to impair several aspects of mitochondrial function, it is still unclear whether it also directly impinges on mitochondrial quality control, specifically Parkin-dependent mitophagy. Using the mito-QC mitophagy reporter, we found that both human wild-type (hTau) and FTD mutant tau (hP301L) inhibited mitophagy in neuroblastoma cells, by reducing mitochondrial translocation of Parkin. In the Caenorhabditis elegans nervous system, hTau expression reduced mitophagy, whereas hP301L expression completely inhibited it. These effects were not due to changes in the mitochondrial membrane potential or the cytoskeleton, as tau specifically impaired Parkin recruitment to defective mitochondria by sequestering it in the cytosol. This sequestration was mediated by aberrant interactions of Parkin with the projection domain of tau. As mitochondria are dysfunctional in neurodegenerative conditions, these data suggest a vicious cycle, with tau also inhibiting the degradation of damaged mitochondria.
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Affiliation(s)
- Nadia Cummins
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Andrea Tweedie
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Steven Zuryn
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Jesus Bertran-Gonzalez
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Decision Neuroscience Laboratory, School of Psychology, University of New South Wales, Sydney, NSW, Australia
| | - Jürgen Götz
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
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39
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Ma D, Liu W, Wang L, Xu X, Wang L, Yu H, Liu X, Liu H, Wang D, Shan D. Mitophagy in the Skeletal Muscle Is Suppressed in Spleen Qi Deficiency. Chin Med 2019. [DOI: 10.4236/cm.2019.101002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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40
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Experimental Models of Tauopathy - From Mechanisms to Therapies. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1184:381-391. [PMID: 32096051 DOI: 10.1007/978-981-32-9358-8_28] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Animal models have been instrumental in reproducing key aspects of human tauopathy. In pursuing these efforts, the mouse continues to have a prominent role. In this chapter, we focus on models that overexpress wild-type or mutant forms of tau, the latter being based on mutations found in familial cases of frontotemporal dementia. We review some of these models in more detail and discuss what they have revealed about the underlying pathomechanisms, as well as highlighting new developments that exploit gene editing tools such as TALEN and CRISPR. Interestingly, when investigating the role of tau in impairing cellular functions, common themes emerge. Because tau is a scaffolding protein that aggregates in the somatodendritic domain under pathological conditions, it traps proteins such as parkin and JIP1, preventing them from executing their normal function in mitophagy and axonal transport, respectively. Another aspect is the emerging role of tau in the translational machinery and the finding that the somatodendritic accumulation of tau in Alzheimer's disease may in part be due to the induction of the de novo synthesis of tau by amyloid-β via the Fyn/ERK/S6 pathway. We further discuss treatment strategies such as tau-based vaccinations and therapeutic ultrasound and conclude by discussing whether there is a future for animal models of tauopathies.
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41
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Wang KZQ, Steer E, Otero PA, Bateman NW, Cheng MH, Scott AL, Wu C, Bahar I, Shih YT, Hsueh YP, Chu CT. PINK1 Interacts with VCP/p97 and Activates PKA to Promote NSFL1C/p47 Phosphorylation and Dendritic Arborization in Neurons. eNeuro 2018; 5:ENEURO.0466-18.2018. [PMID: 30783609 PMCID: PMC6377406 DOI: 10.1523/eneuro.0466-18.2018] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/06/2018] [Accepted: 12/10/2018] [Indexed: 01/06/2023] Open
Abstract
While PTEN-induced kinase 1 (PINK1) is well characterized for its role in mitochondrial homeostasis, much less is known concerning its ability to prevent synaptodendritic degeneration. Using unbiased proteomic methods, we identified valosin-containing protein (VCP) as a major PINK1-interacting protein. RNAi studies demonstrate that both VCP and its cofactor NSFL1C/p47 are necessary for the ability of PINK1 to increase dendritic complexity. Moreover, PINK1 regulates phosphorylation of p47, but not the VCP co-factor UFD1. Although neither VCP nor p47 interact directly with PKA, we found that PINK1 binds and phosphorylates the catalytic subunit of PKA at T197 [PKAcat(pT197)], a site known to activate the PKA holoenzyme. PKA in turn phosphorylates p47 at a novel site (S176) to regulate dendritic complexity. Given that PINK1 physically interacts with both the PKA holoenzyme and the VCP-p47 complex to promote dendritic arborization, we propose that PINK1 scaffolds a novel PINK1-VCP-PKA-p47 signaling pathway to orchestrate dendritogenesis in neurons. These findings highlight an important mechanism by which proteins genetically implicated in Parkinson's disease (PD; PINK1) and frontotemporal dementia (FTD; VCP) interact to support the health and maintenance of neuronal arbors.
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Affiliation(s)
- Kent Z. Q. Wang
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Erin Steer
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - P. Anthony Otero
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Nicholas W. Bateman
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Mary Hongying Cheng
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Ana Ligia Scott
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Christine Wu
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Ivet Bahar
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Yu-Tzu Shih
- Academia Sinica, Institute of Molecular Biology, Taipei, Taiwan 11529
| | - Yi-Ping Hsueh
- Academia Sinica, Institute of Molecular Biology, Taipei, Taiwan 11529
| | - Charleen T. Chu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
- Pittsburgh Institute for Neurodegenerative Diseases, McGowan Institute for Regenerative Medicine, Center for Protein Conformational Diseases and Center for Neuroscience at the University of Pittsburgh, Pittsburgh, PA 15213
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Salazar C, Ruiz-Hincapie P, Ruiz LM. The Interplay among PINK1/PARKIN/Dj-1 Network during Mitochondrial Quality Control in Cancer Biology: Protein Interaction Analysis. Cells 2018; 7:cells7100154. [PMID: 30274236 PMCID: PMC6210981 DOI: 10.3390/cells7100154] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/14/2018] [Accepted: 09/25/2018] [Indexed: 12/18/2022] Open
Abstract
PARKIN (E3 ubiquitin ligase PARK2), PINK1 (PTEN induced kinase 1) and DJ-1 (PARK7) are proteins involved in autosomal recessive parkinsonism, and carcinogenic processes. In damaged mitochondria, PINK1’s importing into the inner mitochondrial membrane is prevented, PARKIN presents a partial mitochondrial localization at the outer mitochondrial membrane and DJ-1 relocates to mitochondria when oxidative stress increases. Depletion of these proteins result in abnormal mitochondrial morphology. PINK1, PARKIN, and DJ-1 participate in mitochondrial remodeling and actively regulate mitochondrial quality control. In this review, we highlight that PARKIN, PINK1, and DJ-1 should be regarded as having an important role in Cancer Biology. The STRING database and Gene Ontology (GO) enrichment analysis were performed to consolidate knowledge of well-known protein interactions for PINK1, PARKIN, and DJ-1 and envisage new ones. The enrichment analysis of KEGG pathways showed that the PINK1/PARKIN/DJ-1 network resulted in Parkinson disease as the main feature, while the protein DJ-1 showed enrichment in prostate cancer and p53 signaling pathway. Some predicted transcription factors regulating PINK1, PARK2 (PARKIN) and PARK7 (DJ-1) gene expression are related to cell cycle control. We can therefore suggest that the interplay among PINK1/PARKIN/DJ-1 network during mitochondrial quality control in cancer biology may occur at the transcriptional level. Further analysis, like a systems biology approach, will be helpful in the understanding of PINK1/PARKIN/DJ-1 network.
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Affiliation(s)
- Celia Salazar
- Instituto de Investigaciones Biomédicas, Universidad Autónoma de Chile, Santiago 8910060, Chile.
| | - Paula Ruiz-Hincapie
- School of Engineering and Technology, University of Hertfordshire, Hatfield AL 10 9AB, UK.
| | - Lina María Ruiz
- Instituto de Investigaciones Biomédicas, Universidad Autónoma de Chile, Santiago 8910060, Chile.
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Sun T, Li MY, Li PF, Cao JM. MicroRNAs in Cardiac Autophagy: Small Molecules and Big Role. Cells 2018; 7:cells7080104. [PMID: 30103495 PMCID: PMC6116024 DOI: 10.3390/cells7080104] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 12/12/2022] Open
Abstract
Autophagy, which is an evolutionarily conserved process according to the lysosomal degradation of cellular components, plays a critical role in maintaining cell homeostasis. Autophagy and mitochondria autophagy (mitophagy) contribute to the preservation of cardiac homeostasis in physiological settings. However, impaired or excessive autophagy is related to a variety of diseases. Recently, a close link between autophagy and cardiac disorders, including myocardial infarction, cardiac hypertrophy, cardiomyopathy, cardiac fibrosis, and heart failure, has been demonstrated. MicroRNAs (miRNAs) are a class of small non-coding RNAs with a length of approximately 21–22 nucleotides (nt), which are distributed widely in viruses, plants, protists, and animals. They function in mediating the post-transcriptional gene silencing. A growing number of studies have demonstrated that miRNAs regulate cardiac autophagy by suppressing the expression of autophagy-related genes in a targeted manner, which are involved in the pathogenesis of heart diseases. This review summarizes the role of microRNAs in cardiac autophagy and related cardiac disorders. Furthermore, we mainly focused on the autophagy regulation pathways, which consisted of miRNAs and their targeted genes.
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Affiliation(s)
- Teng Sun
- Key Laboratory of Cellular Physiology, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan 030001, China.
| | - Meng-Yang Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China.
| | - Pei-Feng Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China.
| | - Ji-Min Cao
- Key Laboratory of Cellular Physiology, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan 030001, China.
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Grimm A, Cummins N, Götz J. Local Oxidative Damage in the Soma and Dendrites Quarantines Neuronal Mitochondria at the Site of Insult. iScience 2018; 6:114-127. [PMID: 30240605 PMCID: PMC6137705 DOI: 10.1016/j.isci.2018.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 06/11/2018] [Accepted: 07/17/2018] [Indexed: 12/19/2022] Open
Abstract
Neurons are highly dependent on mitochondria, but little is known about how they react to a local mitochondrial oxidative insult. We therefore developed a protocol in primary hippocampal cultures that combines the photosensitizer mito-KillerRed with fluorescent biosensors and photoactivatable GFP. We found in both the soma and dendrites that neurons restrict the local increase in mitochondria-derived reactive oxygen species and the decrease in ATP production to the damaged compartment, by quarantining mitochondria. Although the cytosol of both the soma and dendrites became oxidized after mito-KillerRed activation, dendrites were more sensitive to the oxidative insult. Importantly, the impaired mitochondria exhibited decreased motility and fusion, thereby avoiding the spread of oxidation throughout the neuron. These results establish how neurons manage oxidative damage and increase our understanding about the somatodendritic regulation of mitochondrial functions after a local oxidative insult. An oxidative insult is contained locally to the damaged region of a neuron ATP levels decrease only in the damaged region of the soma or dendrite ATP levels increase in the regions distal to the oxidative insult Stressed mitochondria are fragmented, with a decreased motility and fusion rate
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Affiliation(s)
- Amandine Grimm
- Clem Jones Centre for Ageing Dementia Research (CJCADR), Queensland Brain Institute (QBI), The University of Queensland, St Lucia Campus, Brisbane, QLD 4072, Australia
| | - Nadia Cummins
- Clem Jones Centre for Ageing Dementia Research (CJCADR), Queensland Brain Institute (QBI), The University of Queensland, St Lucia Campus, Brisbane, QLD 4072, Australia
| | - Jürgen Götz
- Clem Jones Centre for Ageing Dementia Research (CJCADR), Queensland Brain Institute (QBI), The University of Queensland, St Lucia Campus, Brisbane, QLD 4072, Australia.
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Chu CT. Mechanisms of selective autophagy and mitophagy: Implications for neurodegenerative diseases. Neurobiol Dis 2018; 122:23-34. [PMID: 30030024 DOI: 10.1016/j.nbd.2018.07.015] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/11/2018] [Accepted: 07/15/2018] [Indexed: 01/07/2023] Open
Abstract
Over the past 20 years, the concept of mammalian autophagy as a nonselective degradation system has been repudiated, due in part to important discoveries in neurodegenerative diseases, which opened the field of selective autophagy. Protein aggregates and damaged mitochondria represent key pathological hallmarks shared by most neurodegenerative diseases. The landmark discovery in 2007 of p62/SQSTM1 as the first mammalian selective autophagy receptor defined a new family of autophagy-related proteins that serve to target protein aggregates, mitochondria, intracellular pathogens and other cargoes to the core autophagy machinery via an LC3-interacting region (LIR)-motif. Notably, mutations in the LIR-motif proteins p62 (SQSTM1) and optineurin (OPTN) contribute to familial forms of frontotemporal dementia and amyotrophic lateral sclerosis. Moreover, a subset of LIR-motif proteins is involved in selective mitochondrial degradation initiated by two recessive familial Parkinson's disease genes. PTEN-induced kinase 1 (PINK1) activates the E3 ubiquitin ligase Parkin (PARK2) to mark depolarized mitochondria for degradation. An extensive body of literature delineates key mechanisms in this pathway, based mostly on work in transformed cell lines. However, the potential role of PINK1-triggered mitophagy in neurodegeneration remains a conundrum, particularly in light of recent in vivo mitophagy studies. There are at least three major mechanisms by which mitochondria are targeted for mitophagy: transmembrane receptor-mediated, ubiquitin-mediated and cardiolipin-mediated. This review summarizes key features of the major cargo recognition pathways for selective autophagy and mitophagy, highlighting their potential impact in the pathogenesis or amelioration of neurodegenerative diseases.
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Affiliation(s)
- Charleen T Chu
- Departments of Pathology and Ophthalmology, Pittsburgh Institute for Neurodegenerative Diseases, McGowan Institute for Regenerative Medicine, Center for Protein Conformational Diseases, Center for Neuroscience at the University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
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Cornelissen T, Vilain S, Vints K, Gounko N, Verstreken P, Vandenberghe W. Deficiency of parkin and PINK1 impairs age-dependent mitophagy in Drosophila. eLife 2018; 7:35878. [PMID: 29809156 PMCID: PMC6008047 DOI: 10.7554/elife.35878] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/26/2018] [Indexed: 12/13/2022] Open
Abstract
Mutations in the genes for PINK1 and parkin cause Parkinson's disease. PINK1 and parkin cooperate in the selective autophagic degradation of damaged mitochondria (mitophagy) in cultured cells. However, evidence for their role in mitophagy in vivo is still scarce. Here, we generated a Drosophila model expressing the mitophagy probe mt-Keima. Using live mt-Keima imaging and correlative light and electron microscopy (CLEM), we show that mitophagy occurs in muscle cells and dopaminergic neurons in vivo, even in the absence of exogenous mitochondrial toxins. Mitophagy increases with aging, and this age-dependent rise is abrogated by PINK1 or parkin deficiency. Knockdown of the Drosophila homologues of the deubiquitinases USP15 and, to a lesser extent, USP30, rescues mitophagy in the parkin-deficient flies. These data demonstrate a crucial role for parkin and PINK1 in age-dependent mitophagy in Drosophila in vivo.
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Affiliation(s)
- Tom Cornelissen
- Laboratory for Parkinson Research, Department of Neurosciences, Leuven, Belgium
| | - Sven Vilain
- Department of Neurosciences, KU Leuven, Leuven, Belgium.,VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium
| | - Katlijn Vints
- VIB Electron Microscopy Platform and BioImaging Core, Department of Neurosciences, VIB-KU Leuven Center for Brain and Disease Research, KU Leuven, Leuven, Belgium
| | - Natalia Gounko
- VIB Electron Microscopy Platform and BioImaging Core, Department of Neurosciences, VIB-KU Leuven Center for Brain and Disease Research, KU Leuven, Leuven, Belgium
| | - Patrik Verstreken
- Department of Neurosciences, KU Leuven, Leuven, Belgium.,VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium
| | - Wim Vandenberghe
- Laboratory for Parkinson Research, Department of Neurosciences, Leuven, Belgium.,Department of Neurology, University Hospitals Leuven, Leuven, Belgium
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Lee JJ, Sanchez-Martinez A, Martinez Zarate A, Benincá C, Mayor U, Clague MJ, Whitworth AJ. Basal mitophagy is widespread in Drosophila but minimally affected by loss of Pink1 or parkin. J Cell Biol 2018; 217:1613-1622. [PMID: 29500189 PMCID: PMC5940313 DOI: 10.1083/jcb.201801044] [Citation(s) in RCA: 225] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/13/2018] [Accepted: 02/16/2018] [Indexed: 01/01/2023] Open
Abstract
PINK1/parkin are key mediators of stress-induced mitophagy in vitro, but their impact on basal mitophagy in vivo is unclear. Novel Drosophila reporter lines reveal abundant mitophagy in many tissues, including dopaminergic neurons, that is unaffected by loss of PINK1/parkin. The Parkinson’s disease factors PINK1 and parkin are strongly implicated in stress-induced mitophagy in vitro, but little is known about their impact on basal mitophagy in vivo. We generated transgenic Drosophila melanogaster expressing fluorescent mitophagy reporters to evaluate the impact of Pink1/parkin mutations on basal mitophagy under physiological conditions. We find that mitophagy is readily detectable and abundant in many tissues, including Parkinson’s disease–relevant dopaminergic neurons. However, we did not detect mitolysosomes in flight muscle. Surprisingly, in Pink1 or parkin null flies, we did not observe any substantial impact on basal mitophagy. Because these flies exhibit locomotor defects and dopaminergic neuron loss, our findings raise questions about current assumptions of the pathogenic mechanism associated with the PINK1/parkin pathway. Our findings provide evidence that Pink1 and parkin are not essential for bulk basal mitophagy in Drosophila. They also emphasize that mechanisms underpinning basal mitophagy remain largely obscure.
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Affiliation(s)
- Juliette J Lee
- Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge, England, UK
| | - Alvaro Sanchez-Martinez
- Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge, England, UK
| | - Aitor Martinez Zarate
- Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa-Bizkaia, Spain.,Department of Molecular and Cellular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, England, UK
| | - Cristiane Benincá
- Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge, England, UK
| | - Ugo Mayor
- Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa-Bizkaia, Spain
| | - Michael J Clague
- Department of Molecular and Cellular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, England, UK
| | - Alexander J Whitworth
- Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge, England, UK
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von Stockum S, Marchesan E, Ziviani E. Mitochondrial quality control beyond PINK1/Parkin. Oncotarget 2018; 9:12550-12551. [PMID: 29560088 PMCID: PMC5849152 DOI: 10.18632/oncotarget.23799] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 12/31/2017] [Indexed: 11/25/2022] Open
Affiliation(s)
- Sophia von Stockum
- Department of Biology, University of Padova, Padova, Italy; Istituto IRCCS San Camillo, Lido di Venezia, Venezia, Italy
| | - Elena Marchesan
- Department of Biology, University of Padova, Padova, Italy; Istituto IRCCS San Camillo, Lido di Venezia, Venezia, Italy
| | - Elena Ziviani
- Department of Biology, University of Padova, Padova, Italy; Istituto IRCCS San Camillo, Lido di Venezia, Venezia, Italy
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