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Cha Z, Qiao Y, Lu Q, Wang Q, Lu X, Zhou H, Li T. Research progress and challenges of stem cell therapy for ischemic stroke. Front Cell Dev Biol 2024; 12:1410732. [PMID: 39040041 PMCID: PMC11260720 DOI: 10.3389/fcell.2024.1410732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 06/17/2024] [Indexed: 07/24/2024] Open
Abstract
Ischemic stroke is a significant global cause of death and disability. Currently, treatment options for acute ischemic stroke are limited to intravenous thrombolysis and mechanical recanalization. Therefore, novel neuroprotective strategies are imperative. Stem cell transplantation possesses the capabilities of differentiation, proliferation, neuronal replacement, nerve pathway reconstruction, secretion of nerve growth factors, and enhancement of the microenvironment; thus, it is a potential therapeutic approach for ischemic stroke. In addition, the immunomodulatory function of stem cells and the combined treatment of stem cells and exosomes exhibit a favorable protective effect on brain injury and neurological dysfunction following stroke. Meanwhile, the theory of microbiota-gut-brain axis provides us with a novel perspective for comprehending and managing neurological diseases. Lastly, stem cell transplantation has demonstrated promising outcomes not only in treating ischemic stroke but also in dealing with other neurological disorders, such as brain tumors. Furthermore, challenges related to the tissue source, delivery method, immune response, and timing of transplantation still need to be addressed to optimize the treatment.
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Affiliation(s)
- Zaihong Cha
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yisheng Qiao
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Qixiong Lu
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Qiyang Wang
- Department of Orthopedics, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xiaoyang Lu
- Department of Neurosurgery, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Hu Zhou
- Department of Neurosurgery, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Tao Li
- Research Center for Clinical Medicine, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
- Institute of Neurosurgery and Neuroscience, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
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Chen H, Liu J, Chen M, Wei Z, Yuan J, Wu W, Wu Z, Zheng Z, Zhao Z, Lin Q, Liu N. SIRT3 facilitates mitochondrial structural repair and functional recovery in rats after ischemic stroke by promoting OPA1 expression and activity. Clin Nutr 2024; 43:1816-1831. [PMID: 38870662 DOI: 10.1016/j.clnu.2024.06.001] [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: 01/22/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND Optical atrophy 1 (OPA1), a protein accountable for mitochondrial fusion, facilitates the restoration of mitochondrial structure and function following cerebral ischemia/reperfusion (I/R) injury. The OPA1-conferred mitochondrial protection involves its expression and activity, which can be improved by SIRT3 in non-cerebral ischemia. Nevertheless, it remains obscure whether SIRT3 enhances the expression and activity of OPA1 after cerebral I/R injury. METHODS Mature male Sprague Dawley rats were intracranially injected with adeno-associated viral-Sirtuin-3(AAV-SIRT3) and AAV-sh_OPA1, followed by a 90-min temporary blockage of the middle cerebral artery and subsequent restoration of blood flow. Cultured cortical neurons of rats were transfected with LV-SIRT3 or LV-sh_OPA1 before a 2-h oxygen-glucose deprivation and reoxygenation. The rats and neurons were subsequently treated with a selective OPA1 activity inhibitor (MYLS22). The interaction between SIRT3 and OPA1 was assessed by molecular dynamics simulation technology and co-immunoprecipitation. The expression, function, and specific protective mechanism of SIRT3 were examined by various analyses. RESULTS SIRT3 interacted with OPA1 in the rat cerebral cortex before and after cerebral I/R. After cerebral I/R damage, SIRT3 upregulation increased the OPA1 expression, which enhanced deacetylation and OPA1 activity, thus alleviating cerebral infarct volume, neuronal apoptosis, oxidative pressure, and impairment in mitochondrial energy production; SIRT3 upregulation also improved neuromotor performance, repaired mitochondrial ultrastructure and membrane composition, and promoted the mitochondrial biogenesis. These neuroprotective effects were partly reversed by OPA1 expression interference and OPA1 activity inhibitor MYLS22. CONCLUSION In rats, SIRT3 enhances the expression and activity of OPA1, facilitating the repair of mitochondrial structure and functional recovery following cerebral I/R injury. These findings highlight that regulating SIRT3 may be a promising therapeutic strategy for ischemic stroke.
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Affiliation(s)
- Hongbin Chen
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Ji Liu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Manli Chen
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Zengyu Wei
- Emergency Department, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jinjin Yuan
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Wenwen Wu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Zhiyun Wu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Zhijian Zheng
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Zijun Zhao
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Qiang Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Nan Liu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China; Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China; Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China.
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Huang Y, Zhang Z, Xu Y, Peng Y, Xu R, Luan Y, Bie X, Jia J, Zhang C, Han T, Zhou B, Li Z, Zheng H, Yang D, He Y. ARMC10 regulates mitochondrial dynamics and affects mitochondrial function via the Wnt/β-catenin signalling pathway involved in ischaemic stroke. J Cell Mol Med 2024; 28:e18449. [PMID: 38924214 PMCID: PMC11196997 DOI: 10.1111/jcmm.18449] [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: 03/02/2023] [Revised: 04/25/2024] [Accepted: 05/13/2024] [Indexed: 06/28/2024] Open
Abstract
Mitochondrial dynamics has emerged as an important target for neuronal protection after cerebral ischaemia/reperfusion. Therefore, the aim of this study was to investigate the mechanism by which ARMC10 regulation of mitochondrial dynamics affects mitochondrial function involved in ischaemic stroke (IS). Mitochondrial morphology was detected by laser scanning confocal microscopy (LSCM), and mitochondrial ultrastructural alterations were detected by electron microscopy. The expression of mitochondrial dynamics-related genes Drp1, Mfn1, Mfn2, Fis1, OPA1 and ARMC10 and downstream target genes c-Myc, CyclinD1 and AXIN2 was detected by RT-qPCR. Western blot was used to detect the protein expression of β-catenin, GSK-3β, p-GSK-3β, Bcl-2 and Bax. DCFH-DA fluorescent probe was to detect the effect of ARMC10 on mitochondrial ROS level, Annexin V-FITC fluorescent probe was to detect the effect of ARMC10 on apoptosis, and ATP assay kit was to detect the effect of ARMC10 on ATP production. Mitochondrial dynamics was dysregulated in clinical IS samples and in the OGD/R cell model, and the relative expression of ARMC10 gene was significantly decreased in IS group (p < 0.05). Knockdown and overexpression of ARMC10 could affect mitochondrial dynamics, mitochondrial function and neuronal apoptosis. Agonist and inhibitor affected mitochondrial function and neuronal apoptosis by targeting Wnt/β-Catenin signal pathway. In the OGD/R model, ARMC10 affected mitochondrial function and neuronal apoptosis through the mechanism that regulates Wnt/β-catenin signalling pathway. ARMC10 regulates mitochondrial dynamics and protects mitochondrial function by activating Wnt/β-catenin signalling pathway, to exert neuroprotective effects.
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Affiliation(s)
- Yanyang Huang
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Zhaojing Zhang
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Yatian Xu
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Yue Peng
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Ruochen Xu
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Yingying Luan
- Reproduction CenterThe Third Affiliated Hospital of ZhengZhou UniversityZhengzhouChina
| | - Xiaoshuai Bie
- Clinical Laboratory CenterQingyuan Maternal and Child Health HospitalQingyuanChina
| | - Jing Jia
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Chi Zhang
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Tianyi Han
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Baixue Zhou
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Zhihao Li
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Hong Zheng
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Dongzhi Yang
- School of Life SciencesZhengzhou UniversityZhengzhouChina
| | - Ying He
- Department of Medical Genetics and Cell Biology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
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He Y, He T, Li H, Chen W, Zhong B, Wu Y, Chen R, Hu Y, Ma H, Wu B, Hu W, Han Z. Deciphering mitochondrial dysfunction: Pathophysiological mechanisms in vascular cognitive impairment. Biomed Pharmacother 2024; 174:116428. [PMID: 38599056 DOI: 10.1016/j.biopha.2024.116428] [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: 12/20/2023] [Revised: 02/26/2024] [Accepted: 03/08/2024] [Indexed: 04/12/2024] Open
Abstract
Vascular cognitive impairment (VCI) encompasses a range of cognitive deficits arising from vascular pathology. The pathophysiological mechanisms underlying VCI remain incompletely understood; however, chronic cerebral hypoperfusion (CCH) is widely acknowledged as a principal pathological contributor. Mitochondria, crucial for cellular energy production and intracellular signaling, can lead to numerous neurological impairments when dysfunctional. Recent evidence indicates that mitochondrial dysfunction-marked by oxidative stress, disturbed calcium homeostasis, compromised mitophagy, and anomalies in mitochondrial dynamics-plays a pivotal role in VCI pathogenesis. This review offers a detailed examination of the latest insights into mitochondrial dysfunction within the VCI context, focusing on both the origins and consequences of compromised mitochondrial health. It aims to lay a robust scientific groundwork for guiding the development and refinement of mitochondrial-targeted interventions for VCI.
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Affiliation(s)
- Yuyao He
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Tiantian He
- Sichuan Academy of Chinese Medicine Sciences, China
| | - Hongpei Li
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Wei Chen
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Biying Zhong
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Yue Wu
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Runming Chen
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Yuli Hu
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Huaping Ma
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Bin Wu
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Wenyue Hu
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China.
| | - Zhenyun Han
- Shenzhen Hospital, Beijing University of Chinese Medicine, Shenzhen, Guangdong, China.
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Gilkerson R, Kaur H, Carrillo O, Ramos I. OMA1-Mediated Mitochondrial Dynamics Balance Organellar Homeostasis Upstream of Cellular Stress Responses. Int J Mol Sci 2024; 25:4566. [PMID: 38674151 PMCID: PMC11049825 DOI: 10.3390/ijms25084566] [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: 03/29/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
In response to cellular metabolic and signaling cues, the mitochondrial network employs distinct sets of membrane-shaping factors to dynamically modulate organellar structures through a balance of fission and fusion. While these organellar dynamics mediate mitochondrial structure/function homeostasis, they also directly impact critical cell-wide signaling pathways such as apoptosis, autophagy, and the integrated stress response (ISR). Mitochondrial fission is driven by the recruitment of the cytosolic dynamin-related protein-1 (DRP1), while fusion is carried out by mitofusins 1 and 2 (in the outer membrane) and optic atrophy-1 (OPA1) in the inner membrane. This dynamic balance is highly sensitive to cellular stress; when the transmembrane potential across the inner membrane (Δψm) is lost, fusion-active OPA1 is cleaved by the overlapping activity with m-AAA protease-1 (OMA1 metalloprotease, disrupting mitochondrial fusion and leaving dynamin-related protein-1 (DRP1)-mediated fission unopposed, thus causing the collapse of the mitochondrial network to a fragmented state. OMA1 is a unique regulator of stress-sensitive homeostatic mitochondrial balance, acting as a key upstream sensor capable of priming the cell for apoptosis, autophagy, or ISR signaling cascades. Recent evidence indicates that higher-order macromolecular associations within the mitochondrial inner membrane allow these specialized domains to mediate crucial organellar functionalities.
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Affiliation(s)
- Robert Gilkerson
- School of Integrative Biological & Chemical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (H.K.); (O.C.)
- Department of Health & Biomedical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA
| | - Harpreet Kaur
- School of Integrative Biological & Chemical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (H.K.); (O.C.)
| | - Omar Carrillo
- School of Integrative Biological & Chemical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (H.K.); (O.C.)
| | - Isaiah Ramos
- School of Integrative Biological & Chemical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (H.K.); (O.C.)
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Wang C, Østergaard L, Hasselholt S, Sporring J. A semi-automatic method for extracting mitochondrial cristae characteristics from 3D focused ion beam scanning electron microscopy data. Commun Biol 2024; 7:377. [PMID: 38548849 PMCID: PMC10978844 DOI: 10.1038/s42003-024-06045-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 03/11/2024] [Indexed: 04/01/2024] Open
Abstract
Mitochondria are the main suppliers of energy for cells and their bioenergetic function is regulated by mitochondrial dynamics: the constant changes in mitochondria size, shape, and cristae morphology to secure cell homeostasis. Although changes in mitochondrial function are implicated in a wide range of diseases, our understanding is challenged by a lack of reliable ways to extract spatial features from the cristae, the detailed visualization of which requires electron microscopy (EM). Here, we present a semi-automatic method for the segmentation, 3D reconstruction, and shape analysis of mitochondria, cristae, and intracristal spaces based on 2D EM images of the murine hippocampus. We show that our method provides a more accurate characterization of mitochondrial ultrastructure in 3D than common 2D approaches and propose an operational index of mitochondria's internal organization. With an improved consistency of 3D shape analysis and a decrease in the workload needed for large-scale analysis, we speculate that this tool will help increase our understanding of mitochondrial dynamics in health and disease.
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Affiliation(s)
- Chenhao Wang
- Department of Computer Science, University of Copenhagen, Copenhagen, Denmark.
- Center for Quantification of Imaging Data from MAX IV, Copenhagen, Denmark.
| | - Leif Østergaard
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Center of Functionally Integrative Neuroscience, Aarhus, Denmark
| | - Stine Hasselholt
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Center of Functionally Integrative Neuroscience, Aarhus, Denmark
| | - Jon Sporring
- Department of Computer Science, University of Copenhagen, Copenhagen, Denmark.
- Center for Quantification of Imaging Data from MAX IV, Copenhagen, Denmark.
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Zhang Y, Gong X. Fat mass and obesity associated protein inhibits neuronal ferroptosis via the FYN/Drp1 axis and alleviate cerebral ischemia/reperfusion injury. CNS Neurosci Ther 2024; 30:e14636. [PMID: 38430221 PMCID: PMC10908355 DOI: 10.1111/cns.14636] [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: 06/27/2023] [Revised: 01/05/2024] [Accepted: 01/25/2024] [Indexed: 03/03/2024] Open
Abstract
OBJECTIVES FTO is known to be involved in cerebral ischemia/reperfusion (I/R) injury. However, its related specific mechanisms during this condition warrant further investigations. This study aimed at exploring the impacts of FTO and the FYN/DRP1 axis on mitochondrial fission, oxidative stress (OS), and ferroptosis in cerebral I/R injury and the underlying mechanisms. METHODS The cerebral I/R models were established in mice via the temporary middle cerebral artery occlusion/reperfusion (tMCAO/R) and hypoxia/reoxygenation models were induced in mouse hippocampal neurons via oxygen-glucose deprivation/reoxygenation (OGD/R). After the gain- and loss-of-function assays, related gene expression was detected, along with the examination of mitochondrial fission, OS- and ferroptosis-related marker levels, neuronal degeneration and cerebral infarction, and cell viability and apoptosis. The binding of FTO to FYN, m6A modification levels of FYN, and the interaction between FYN and Drp1 were evaluated. RESULTS FTO was downregulated and FYN was upregulated in tMCAO/R mouse models and OGD/R cell models. FTO overexpression inhibited mitochondrial fission, OS, and ferroptosis to suppress cerebral I/R injury in mice, which was reversed by further overexpressing FYN. FTO overexpression also suppressed mitochondrial fission and ferroptosis to increase cell survival and inhibit cell apoptosis in OGD/R cell models, which was aggravated by additionally inhibiting DRP1. FTO overexpression inhibited FYN expression via the m6A modification to inactive Drp1 signaling, thus reducing mitochondrial fission and ferroptosis and enhancing cell viability in cells. CONCLUSIONS FTO overexpression suppressed FYN expression through m6A modification, thereby subduing Drp1 activity and relieving cerebral I/R injury.
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Affiliation(s)
- Yi Zhang
- Department of Emergency, Hunan Provincial People's HospitalThe First Affiliated Hospital of Hunan Normal UniversityChangshaHunanChina
| | - Xin Gong
- Department of Neurosurgery, Hunan Provincial People's HospitalThe First Affiliated Hospital of Hunan Normal UniversityChangshaHunanChina
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8
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Xiaowei X, Qian X, Dingzhou Z. Sirtuin-3 activates the mitochondrial unfolded protein response and reduces cerebral ischemia/reperfusion injury. Int J Biol Sci 2023; 19:4327-4339. [PMID: 37705748 PMCID: PMC10496505 DOI: 10.7150/ijbs.86614] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/06/2023] [Indexed: 09/15/2023] Open
Abstract
Sirtuin-3 (Sirt3) deacetylates several mitochondrial proteins implicated into cerebral ischemia/reperfusion (I/R) injury. The mitochondrial unfolded protein response (UPRmt) favors mitochondrial proteostasis during various stressors. Here, we used Sirt3 transgenic mice and a transient middle cerebral artery occlusion model to evaluate the molecular basis of Sirt3 on the UPRmt during brain post-ischemic dysfunction. The present study illustrated that Sirt3 abundance was suppressed in the brain after brain ischemic abnormalities. Overexpression of Sirt3 in vivo suppressed the infarction size and attenuated neuroinflammation after brain I/R injury. Sirt3 overexpression restored neural viability by reducing mitochondrial ROS synthesis, maintaining the mitochondrial potential and improving mitochondrial adenosine triphosphate synthesis. Sirt3 overexpression protected neuronal mitochondria against brain post-ischemic malfunction via eliciting the UPRmt by the forkhead box O3 (Foxo3)/sphingosine kinase 1 (Sphk1) pathway. Inhibiting either the UPRmt or the Foxo3/Sphk1 pathway relieved the favorable influence of Sirt3 on neural function and mitochondrial behavior. In contrast, Sphk1 overexpression was sufficient to reduce the infarction size, attenuate neuroinflammation, sustain neuronal viability and prevent mitochondrial abnormalities during brain post-ischemia dysfunction. Thus, the UPRmt protects neural viability and mitochondrial homeostasis, and the Sirt3/Foxo3/Sphk1 pathway is a promosing therapeutic candidate for ischemic stroke.
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Affiliation(s)
- Xie Xiaowei
- Department of Neurosurgery, Hunan Provincial People' s Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha 410005, Hunan Province, People's Republic of China
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, People's Republic of China
| | - Xu Qian
- Department of Neurology, Haikou City People' s Hospital, Xiangya School of Medicine, Central South University, Haikou 570100, Hainan Province, People's Republic of China
| | - Zhou Dingzhou
- Department of Neurosurgery, Hunan Provincial People' s Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha 410005, Hunan Province, People's Republic of China
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Lu D, Wang Y, Liu G, Wang S, Duan A, Wang Z, Wang J, Sun X, Wu Y, Wang Z. Armcx1 attenuates secondary brain injury in an experimental traumatic brain injury model in male mice by alleviating mitochondrial dysfunction and neuronal cell death. Neurobiol Dis 2023:106228. [PMID: 37454781 DOI: 10.1016/j.nbd.2023.106228] [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: 04/14/2023] [Revised: 05/20/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023] Open
Abstract
Armcx1 is highly expressed in the brain and is located in the mitochondrial outer membrane of neurons, where it mediates mitochondrial transport. Mitochondrial transport promotes the removal of damaged mitochondria and the replenishment of healthy mitochondria, which is essential for neuronal survival after traumatic brain injury (TBI). This study investigated the role of Armcx1 and its potential regulator(s) in secondary brain injury (SBI) after TBI. An in vivo TBI model was established in male C57BL/6 mice via controlled cortical impact (CCI). Adeno-associated viruses (AAVs) with Armcx1 overexpression and knockdown were constructed and administered to mice via stereotactic cortical injection. Exogenous miR-223-3p mimic or inhibitor was transfected into cultured cortical neurons, which were then scratched to simulate TBI in vitro. It was found that Armcx1 expression decreased significantly, while miR-223-3p levels increased markedly in peri-lesion tissues after TBI. The overexpression of Armcx1 significantly reduced TBI-induced neurological dysfunction, neuronal cell death, mitochondrial dysfunction, and axonal injury, while the knockdown of Armcx1 had the opposite effect. Armcx1 was potentially a direct target of miR-223-3p. The miR-223-3p mimic obviously reduced the Armcx1 protein level, while the miR-223-3p inhibitor had the opposite effect. Finally, the miR-223-3p inhibitor dramatically improved mitochondrial membrane potential (MMP) and increased the total length of the neurites without affecting branching numbers. In summary, our results suggest that the decreased expression of Armcx1 protein in neurons after experimental TBI aggravates secondary brain injury, which may be regulated by miR-223-3p. Therefore, this study provides a potential therapeutic approach for treating TBI.
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Affiliation(s)
- Dengfeng Lu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Yi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Guangjie Liu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Shixin Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Aojie Duan
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Zongqi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Jing Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xiaoou Sun
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.
| | - Yu Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
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Zhang Y, Miao Y, Tan J, Chen F, Lei P, Zhang Q. Identification of mitochondrial related signature associated with immune microenvironment in Alzheimer's disease. J Transl Med 2023; 21:458. [PMID: 37434203 DOI: 10.1186/s12967-023-04254-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/07/2023] [Indexed: 07/13/2023] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common neurodegenerative disease. Mitochondrial dysfunction and immune responses are important factors in the pathogenesis of AD, but their crosstalk in AD has not been studied. In this study, the independent role and interaction of mitochondria-related genes and immune cell infiltration in AD were investigated using bioinformatics methods. METHODS The datasets of AD were obtained from NCBI Gene Expression Omnibus (GEO), and the data of mitochondrial genes was from MitoCarta3.0 database. Subsequently, differential expression genes (DEGs) screening and GSEA functional enrichment analysis were performed. The intersection of DEGs and mitochondrial related genes was used to obtain MitoDEGs. The MitoDEGs most relevant to AD were determined by Least absolute shrinkage and selection operator and multiple support vector machine recursive feature elimination, as well as protein-protein interactions (PPI) network and random forest. The infiltration of 28 kinds of immune cells in AD was analyzed by ssGSEA, and the relationship between hub MitoDEGs and the proportion of immune infiltration was studied. The expression levels of hub MitoDEGs were verified in cell models and AD mice, and the role of OPA1 in mitochondrial damage and neuronal apoptosis was investigated. RESULTS The functions and pathways of DEGs were significantly enriched in AD, including immune response activation, IL1R pathway, mitochondrial metabolism, oxidative damage response and electron transport chain-oxphos system in mitochondria. Hub MitoDEGs closely related to AD were obtained based on PPI network, random forest and two machine learning algorithms. Five hub MitoDEGs associated with neurological disorders were identified by biological function examination. The hub MitoDEGs were found to be correlated with memory B cell, effector memory CD8 T cell, activated dendritic cell, natural killer T cell, type 17 T helper cell, Neutrophil, MDSC, plasmacytoid dendritic cell. These genes can also be used to predict the risk of AD and have good diagnostic efficacy. In addition, the mRNA expression levels of BDH1, TRAP1, OPA1, DLD in cell models and AD mice were consistent with the results of bioinformatics analysis, and expression levels of SPG7 showed a downward trend. Meanwhile, OPA1 overexpression alleviated mitochondrial damage and neuronal apoptosis induced by Aβ1-42. CONCLUSIONS Five potential hub MitoDEGs most associated with AD were identified. Their interaction with immune microenvironment may play a crucial role in the occurrence and prognosis of AD, which provides a new insight for studying the potential pathogenesis of AD and exploring new targets.
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Affiliation(s)
- Yaodan Zhang
- Department of Geriatrics, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
- Tianjin Geriatrics Institute, Anshan Road No. 154, Tianjin, 300052, China
| | - Yuyang Miao
- Department of Geriatrics, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
- Tianjin Geriatrics Institute, Anshan Road No. 154, Tianjin, 300052, China
| | - Jin Tan
- Department of Geriatrics, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
- Tianjin Geriatrics Institute, Anshan Road No. 154, Tianjin, 300052, China
| | - Fanglian Chen
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Ping Lei
- Department of Geriatrics, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China.
- Tianjin Geriatrics Institute, Anshan Road No. 154, Tianjin, 300052, China.
- Haihe Laboratory of Cell Ecosystem, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China.
| | - Qiang Zhang
- Department of Geriatrics, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China.
- Tianjin Geriatrics Institute, Anshan Road No. 154, Tianjin, 300052, China.
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11
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Yan B, Mei Z, Tang Y, Song H, Wu H, Jing Q, Zhang X, Yan C, Han Y. FGF21-FGFR1 controls mitochondrial homeostasis in cardiomyocytes by modulating the degradation of OPA1. Cell Death Dis 2023; 14:311. [PMID: 37156793 PMCID: PMC10167257 DOI: 10.1038/s41419-023-05842-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
Fibroblast growth factor 21 (FGF21) is a pleiotropic hormone secreted primarily by the liver and is considered a major regulator of energy homeostasis. Recent research has revealed that FGF21 could play an important role in cardiac pathological remodeling effects and prevention of cardiomyopathy; however, the underlying mechanism remains largely unknown. This study aimed to determine the mechanism underlying the cardioprotective effects of FGF21. We engineered FGF21 knock out mice and subsequently elucidated the effects of FGF21 and its downstream mediators using western blotting, qRT-PCR, and mitochondrial morphological and functional analyses. FGF21 knockout mice showed cardiac dysfunction, accompanied by a decline in global longitudinal strain (GLS) and ejection fraction (EF), independent of metabolic disorders. Mitochondrial quality, quantity, and function were abnormal, accompanied by decreased levels of optic atrophy-1 (OPA1) in FGF21 KO mice. In contrast to FGF21 knockout, cardiac-specific overexpression of FGF21 alleviated the cardiac dysfunction caused by FGF21 deficiency. In an in vitro study, FGF21 siRNA deteriorated mitochondrial dynamics and impaired function induced by cobalt chloride (CoCl2). Both recombinant FGF21 and adenovirus-mediated FGF21 overexpression could alleviate CoCl2-induced mitochondrial impairment by restoring mitochondrial dynamics. FGF21 was essential for maintaining mitochondrial dynamics and function of the cardiomyocytes. As a regulator of cardiomyocyte mitochondrial homeostasis under oxidative stress, FGF21 could be an important new target for therapeutic options for patients with heart failure.
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Affiliation(s)
- Bing Yan
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
- Department of Cardiology, Second Hospital of Jilin University, No. 218 Ziqiang Street, Changchun, 130041, China
| | - Zhu Mei
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Yaohan Tang
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Haixu Song
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Hanlin Wu
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Quanmin Jing
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Xiaolin Zhang
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China
| | - Chenghui Yan
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China.
| | - Yaling Han
- National Key Laboratory of Frigid Zone Cardiovascular Disease, Cardiovascular Research Institute and Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, 110016, China.
- Department of Cardiology, Second Hospital of Jilin University, No. 218 Ziqiang Street, Changchun, 130041, China.
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12
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Oxygen-Glucose Deprivation Decreases the Motility and Length of Axonal Mitochondria in Cultured Dorsal Root Ganglion Cells of Rats. Cell Mol Neurobiol 2023; 43:1267-1280. [PMID: 35771293 DOI: 10.1007/s10571-022-01247-y] [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: 04/08/2022] [Accepted: 06/20/2022] [Indexed: 11/03/2022]
Abstract
Controlling axonal mitochondria is important for maintaining normal function of the neural network. Oxygen-glucose deprivation (OGD), a model used for mimicking ischemia, eventually induces neuronal cell death similar to axonal degeneration. Axonal mitochondria are disrupted during OGD-induced neural degeneration; however, the mechanism underlying mitochondrial dysfunction has not been completely understood. We focused on the dynamics of mitochondria in axons exposed to OGD; we observed that the number of motile mitochondria significantly reduced in 1 h following OGD exposure. In our observation, the decreased length of stationary mitochondria was affected by the following factors: first, the halt of motile mitochondria; second, the fission of longer stationary mitochondria; and third, a transformation from tubular to spherical shape in OGD-exposed axons. Motile mitochondria reduction preceded stationary mitochondria fragmentation in OGD exposure; these conditions induced the decrease of stationary mitochondria in three different ways. Our results suggest that mitochondrial morphological changes precede the axonal degeneration while ischemia-induced neurodegeneration.
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13
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Yuan Y, Zhang XM. Mechanistic study of optic atrophy 1 in ischemia-reperfusion disease. J Mol Med (Berl) 2023; 101:1-8. [PMID: 36418744 DOI: 10.1007/s00109-022-02271-7] [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: 07/30/2022] [Revised: 10/13/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022]
Abstract
Mitochondria consist of the inner mitochondrial membrane and the outer mitochondrial membrane, which maintain mitochondrial homeostasis through continuous fission and fusion to ensure a healthy mitochondrial network and thus regulate normal cellular function, namely mitochondrial dynamics. The imbalance between mitochondrial fusion and fission results in abnormal mitochondrial structure and eventually mitochondrial dysfunction, which is involved in the pathological process of ischemia-reperfusion injury (IRI). Optic atrophy 1 (OPA1) is a key protein that regulates mitochondrial inner membrane fusion and ensures normal mitochondrial function by balancing mitochondrial dynamics, participating in various processes such as mitochondrial fusion, oxidative stress, and apoptosis. Ischemia-induced changes in mitochondrial dynamics may be a key factor in limiting the recanalization time window and exacerbating reperfusion injury, and the mechanisms of these changes deserve further attention. Therefore, targeting OPA1-related mitochondrial fusions, thereby balancing mitochondrial dynamics and improving mitochondrial dysfunction, is a promising therapeutic strategy for ischemia-reperfusion diseases. This review will elaborate on the structure and function of OPA1 and the role of OPA1 in IRI to provide promising therapeutic targets for the treatment of ischemia-reperfusion diseases.
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Affiliation(s)
- Ying Yuan
- College of Acupuncture, Moxibustion and Orthopedics, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Xiao-Ming Zhang
- College of Acupuncture, Moxibustion and Orthopedics, Hubei University of Chinese Medicine, Wuhan, 430065, China. .,Sub-health institute Hubei university of Chinese Medicine, Wuhan, 430065, China. .,Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion Wuhan, Wuhan, 430065, China.
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14
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Liu AR, Lv Z, Yan ZW, Wu XY, Yan LR, Sun LP, Yuan Y, Xu Q. Association of mitochondrial homeostasis and dynamic balance with malignant biological behaviors of gastrointestinal cancer. J Transl Med 2023; 21:27. [PMID: 36647167 PMCID: PMC9843870 DOI: 10.1186/s12967-023-03878-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 01/07/2023] [Indexed: 01/18/2023] Open
Abstract
Mitochondria determine the physiological status of most eukaryotes. Mitochondrial dynamics plays an important role in maintaining mitochondrial homeostasis, and the disorder in mitochondrial dynamics could affect cellular energy metabolism leading to tumorigenesis. In recent years, disrupted mitochondrial dynamics has been found to influence the biological behaviors of gastrointestinal cancer with the potential to be a novel target for its individualized therapy. This review systematically introduced the role of mitochondrial dynamics in maintaining mitochondrial homeostasis, and further elaborated the effects of disrupted mitochondrial dynamics on the cellular biological behaviors of gastrointestinal cancer as well as its association with cancer progression. We aim to provide clues for elucidating the etiology and pathogenesis of gastrointestinal cancer from the perspective of mitochondrial homeostasis and disorder.
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Affiliation(s)
- Ao-ran Liu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Zhi Lv
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Zi-wei Yan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Xiao-yang Wu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Li-rong Yan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Li-ping Sun
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Yuan Yuan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Qian Xu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
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15
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Sun Y, Yang X, Xu L, Jia M, Zhang L, Li P, Yang P. The Role of Nrf2 in Relieving Cerebral Ischemia-Reperfusion Injury. Curr Neuropharmacol 2023; 21:1405-1420. [PMID: 36453490 PMCID: PMC10324331 DOI: 10.2174/1570159x21666221129100308] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 12/05/2022] Open
Abstract
Ischemic stroke includes two related pathological damage processes: brain injury caused by primary ischemia and secondary ischemia reperfusion (I/R) injury. I/R injury has become a worldwide health problem. Unfortunately, there is still a lack of satisfactory drugs for ameliorating cerebral I/R damage. Nrf2 is a vital endogenous antioxidant protein, which combines with Keap1 to maintain a dormant state under physiological conditions. When pathological changes such as I/R occurs, Nrf2 dissociates from Keap1 and activates the expression of downstream antioxidant proteins to exert a protective effect. Recent research have shown that the activated Nrf2 not only effectively inhibits oxidative stress, but also performs the ability to repair the function of compromised mitochondria, alleviate endoplasmic reticulum stress, eliminate inflammatory response, reduce blood-brain barrier permeability, inhibit neuronal apoptosis, enhance the neural network remolding, thereby exerting significant protective effects in alleviating the injuries caused by cell oxygen-glucose deprivation, or animal cerebral I/R. However, no definite clinical application report demonstrated the efficacy of Nrf2 activators in the treatment of cerebral I/R. Therefore, further efforts are needed to elaborate the role of Nrf2 activators in the treatment of cerebral I/R. Here, we reviewed the possible mechanisms underlying its potential pharmacological benefits in alleviating cerebral I/R injury, so as to provide a theoretical basis for studying its mechanism and developing Nrf2 activators.
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Affiliation(s)
- Yu Sun
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
| | - Xu Yang
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
| | - Lijun Xu
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
| | - Mengxiao Jia
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
| | - Limeng Zhang
- School of Nursing, Pingdingshan Polytenchnic College, Pingdingshan, 467001, China
| | - Peng Li
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
| | - Pengfei Yang
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, College of Pharmacy, Xinxiang Medical University, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang, 453003, China
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16
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Tang J, Liu Z, Han J, Xue J, Liu L, Lin J, Wu C, Zhang Q, Wu S, Liu C, Huang H, Fu Y, Li M, Zhuo Y, Li Y. Increased Mobile Zinc Regulates Retinal Ganglion Cell Survival via Activating Mitochondrial OMA1 and Integrated Stress Response. Antioxidants (Basel) 2022; 11:antiox11102001. [PMID: 36290724 PMCID: PMC9598227 DOI: 10.3390/antiox11102001] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/01/2022] [Accepted: 10/05/2022] [Indexed: 11/26/2022] Open
Abstract
Retinal ganglion cells (RGCs), the projection neurons of the eye, are irreversibly lost once the optic nerve is injured, which is a critical mechanism of glaucoma. Mobile zinc (Zn2+) levels rapidly increase in retinal interneuron amacrine cells and Zn2+ is then transferred to RGCs via the Zn2+ transporter protein ZnT-3, triggering RGC loss in optic nerve injury. Zn2+ chelation and ZnT-3 deletion promote long-term RGC survival. However, the downstream signaling pathways of Zn2+ in RGCs remains unknown. Here, we show that increased levels of Zn2+ upregulate the expression and activity of mitochondrial zinc metallopeptidase OMA1 in the retina, leading to the cleavage of DELE1 and activation of cytosolic eIF2α kinase PKR, triggering the integrated stress response (ISR) in RGCs. Our study identified OMA1 and ISR as the downstream molecular mechanisms of retinal Zn2+ and potential targets for preventing the progression of Zn2+-associated neuronal damage.
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Affiliation(s)
- Jiahui Tang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Zhe Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Jiaxu Han
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Jingfei Xue
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Liyan Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Jicheng Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Caiqing Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Qi Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Siting Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Canying Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Haishun Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Yuanyuan Fu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Min Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yehong Zhuo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
- Correspondence: (Y.Z.); (Y.L.)
| | - Yiqing Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
- Correspondence: (Y.Z.); (Y.L.)
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17
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Liu Y, Wang Z, Cao C, Xu Z, Lu J, Shen H, Li X, Li H, Wu J, Chen G. Aquaporin 4 Depolarization-Enhanced Transferrin Infiltration Leads to Neuronal Ferroptosis after Subarachnoid Hemorrhage in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8808677. [PMID: 35761873 PMCID: PMC9233479 DOI: 10.1155/2022/8808677] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 12/19/2022]
Abstract
The infiltration of blood components into the brain parenchyma through the lymphoid system is an important cause of subarachnoid hemorrhage injury. AQP4, a water channel protein located at the astrocyte foot, has been reported to regulate blood-brain barrier integrity, and its polarization is disrupted after SAH. Neuronal ferroptosis is involved in subarachnoid hemorrhage- (SAH-) induced brain injury, but the inducing factors are not completely clear. Transferrin is one of the inducing factors of ferroptosis. This study is aimed at researching the role and mechanism of AQP4 in brain injury after subarachnoid hemorrhage in mice. An experimental mouse SAH model was established by endovascular perforation. An AAV vector encoding AQP4 with a GFAP-specific promoter was administered to mice to achieve specific overexpression of AQP4 in astrocytes. PI staining, Fer-1 intervention, and transmission electron microscopy were used to detect neuronal ferroptosis, and dextran (40 kD) leakage was used to detect BBB integrity. Western blot analysis of perfused brain tissue protein samples was used to detect transferrin infiltration. First, neuronal ferroptosis 24 h after SAH was observed by PI staining and Fer-1 intervention. Second, a significant increase in transferrin infiltration was found in the brain parenchyma 24 h after SAH modeling, while transferrin content was positively correlated with neuronal ferroptosis. Then, we observed that AQP4 overexpression effectively improved AQP depolarization and BBB injury induced by SAH and significantly reduced transferrin infiltration and neuronal ferroptosis after SAH. Finally, we found that AQP4 overexpression could effectively improve the neurobehavioral ability of SAH mice, and the neurobehavioral ability was negatively correlated with transferrin brain content. Taken together, these data indicate that overexpression of AQP4 in the mouse brain can effectively improve post-SAH neuronal ferroptosis and brain injury, at least partly by inhibiting transferrin infiltration into the brain parenchyma in the glymphatic system.
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Affiliation(s)
- Yuan Liu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Zongqi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Chang Cao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Zhongmou Xu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Jinxin Lu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Jiang Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street Suzhou Jiangsu Province 215006, China
- Institute of Stroke Research, Soochow University, China
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