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O'Brien JT, Jalilvand SP, Suji NA, Jupelly RK, Phensy A, Mwirigi JM, Elahi H, Price TJ, Kroener S. Elevations in the Mitochondrial Matrix Protein Cyclophilin D Correlate With Reduced Parvalbumin Expression in the Prefrontal Cortex of Patients With Schizophrenia. Schizophr Bull 2024:sbae016. [PMID: 38412332 DOI: 10.1093/schbul/sbae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
BACKGROUND AND HYPOTHESIS Cognitive deficits in schizophrenia are linked to dysfunctions of the dorsolateral prefrontal cortex (DLPFC), including alterations in parvalbumin (PV)-expressing interneurons (PVIs). Redox dysregulation and oxidative stress may represent convergence points in the pathology of schizophrenia, causing dysfunction of GABAergic interneurons and loss of PV. Here, we show that the mitochondrial matrix protein cyclophilin D (CypD), a critical initiator of the mitochondrial permeability transition pore (mPTP) and modulator of the intracellular redox state, is altered in PVIs in schizophrenia. STUDY DESIGN Western blotting was used to measure CypD protein levels in postmortem DLPFC specimens of schizophrenic patients (n = 27) and matched comparison subjects with no known history of psychiatric or neurological disorders (n = 26). In a subset of this cohort, multilabel immunofluorescent confocal microscopy with unbiased stereological sampling methods were used to quantify (1) numbers of PVI across the cortical mantle (20 unaffected comparison, 14 schizophrenia) and (2) PV and CypD protein levels from PVIs in the cortical layers 2-4 (23 unaffected comparison, 18 schizophrenia). STUDY RESULTS In schizophrenic patients, the overall number of PVIs in the DLPFC was not significantly altered, but in individual PVIs of layers 2-4 PV protein levels decreased along a superficial-to-deep gradient when compared to unaffected comparison subjects. These laminar-specific PVI alterations were reciprocally linked to significant CypD elevations both in PVIs and total DLPFC gray matter. CONCLUSIONS Our findings support previously reported PVI anomalies in schizophrenia and suggest that CypD-mediated mPTP formation could be a potential contributor to PVI dysfunction in schizophrenia.
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Affiliation(s)
- John T O'Brien
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Sophia P Jalilvand
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Neha A Suji
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Rohan K Jupelly
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Aarron Phensy
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Juliet M Mwirigi
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Hajira Elahi
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Theodore J Price
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Sven Kroener
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
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Tam HH, Zhu D, Ho SSK, Vong HW, Wong VKW, Mok SWF, Wong IN. Potential enhancement of post-stroke angiogenic response by targeting the oligomeric aggregation of p53 protein. Front Cell Neurosci 2023; 17:1193362. [PMID: 37534043 PMCID: PMC10393283 DOI: 10.3389/fncel.2023.1193362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/30/2023] [Indexed: 08/04/2023] Open
Abstract
Tumor suppressor gene p53 and its aggregate have been found to be involved in many angiogenesis-related pathways. We explored the possible p53 aggregation formation mechanisms commonly occur after ischemic stroke, such as hypoxia and the presence of reactive oxygen species (ROS). The angiogenic pathways involving p53 mainly occur in nucleus or cytoplasm, with one exception that occurs in mitochondria. Considering the high mitochondrial density in brain and endothelial cells, we proposed that the cyclophilin D (CypD)-dependent vascular endothelial cell (VECs) necrosis pathway occurring in the mitochondria is one of the major factors that affects angiogenesis. Hence, targeting p53 aggregation, a key intermediate in the pathway, could be an alternative therapeutic target for post-stroke management.
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Affiliation(s)
- Hoi Hei Tam
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Dongxing Zhu
- Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Institute of Cardiovascular Disease, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Samuel Sze King Ho
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Heng Wai Vong
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Vincent Kam Wai Wong
- Dr. Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Simon Wing-Fai Mok
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
- Dr. Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Io Nam Wong
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
- Dr. Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
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3
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Wu H, Liu Y, Hao Y, Hou D, Yang R. Lycium barbarum polysaccharide protects cardiomyocytes from hypoxia/reoxygenation injury via activation of SIRT3/ CypD signaling. Ann Transl Med 2023; 11:72. [PMID: 36819526 PMCID: PMC9929766 DOI: 10.21037/atm-22-6081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/03/2023] [Indexed: 02/03/2023]
Abstract
Background Myocardial ischemia-reperfusion is a common pathological feature of many heart and vascular diseases, but the molecular mechanism of this process is still unclear, and there is no effective way to protect cardiomyocytes. The aim of this study was to examine the effects and underlying molecular mechanisms of Lycium barbarum polysaccharide (LBP) on myocardial ischemia-reperfusion injury in cardiomyocytes. Methods The cardiomyocyte cell line H9c2 were used to establish an in vitro hypoxia/reoxygenation (H/R) model. After treatment with LBP and/or the SIRT3 inhibitor 3-TYP, cell morphology was observed under the light microscopy. The Cell Counting Kit (CCK)-8 and 5-ethynyl-2'-deoxyuridine (EdU) assay were used to detect cell proliferation, and flow cytometry was performed to assess cell apoptosis. The lysine (166)-acetylation of CypD1 was determined by co-immunoprecipitation assay. Enzyme-linked immunosorbent assay (ELISA) was used to determine the lactate dehydrogenase (LDH) level in the culture medium. Na+-K+-ATPase activity, Ca2+-ATPase activity, and nitric oxide (NO) levels were measured. Results LBP alleviated cell damage and upregulated STIR3 expression in a dose-dependent manner. Upregulated SIRT3 expression and suppressed acetylation of CypD were also observed in H/R-induced H9c2 cells treated with LBP. Indeed, LBP remarkably reversed the inhibition of proliferation and cell apoptosis in H/R-induced H9c2 cells by activating SIRT3/CypD signaling. Blockade of SIRT3 with SIRT3 inhibitor (3-TYP) inhibited the protective effect of LBP on H9c2 cells. LBP markedly alleviated the H/R-induced increase of LDH release, and the decrease of Na+-K+-ATPase activity, Ca2+-ATPase activity, and NO levels. Inhibition of SIRT3 restored the protective effects of LBP. Conclusions LPB induced deacetylation of CypD by upregulating SIRT3, thereby protecting mitochondrial function and relieving H/R-induced injury in cardiomyocytes.
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Affiliation(s)
- Hailiang Wu
- Cadre Ward of Heart Center, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yajuan Liu
- Cadre Ward of Heart Center, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yu Hao
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Dandan Hou
- Cadre Ward of Heart Center, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Ruiying Yang
- Cadre Ward of Heart Center, General Hospital of Ningxia Medical University, Yinchuan, China
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Robichaux DJ, Harata M, Murphy E, Karch J. Mitochondrial permeability transition pore-dependent necrosis. J Mol Cell Cardiol 2023; 174:47-55. [PMID: 36410526 PMCID: PMC9868081 DOI: 10.1016/j.yjmcc.2022.11.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/17/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022]
Abstract
Mitochondrial permeability transition pore (mPTP)-dependent cell death is a form of necrotic cell death that is driven by mitochondrial dysfunction by the opening of the mPTP and is triggered by increases in matrix levels of Ca2+ and reactive oxygen species. This form of cell death has been implicated in ischemic injuries of the heart and brain as well as numerous degenerative diseases in the brain and skeletal muscle. This review focuses on the molecular triggers and regulators of mPTP-dependent necrosis in the context of myocardial ischemia reperfusion injury. Research over the past 50 years has led to the identity of regulators and putative pore-forming components of the mPTP. Finally, downstream consequences of activation of the mPTP as well as ongoing questions and areas of research are discussed. These questions pose a particular interest as targeting the mPTP could potentially represent an efficacious therapeutic strategy to reduce infarct size following an ischemic event.
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Affiliation(s)
- Dexter J Robichaux
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX, USA
| | - Mikako Harata
- Cardiovascular Branch, NHLBI, NIH, 10 Center Drive, Bethesda, MD, USA
| | - Elizabeth Murphy
- Cardiovascular Branch, NHLBI, NIH, 10 Center Drive, Bethesda, MD, USA
| | - Jason Karch
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX, USA.
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Wu A, Zhang J, Li Q, Liao X, Wang C, Zhao J. (-)-Epigallocatechin-3-gallate Directly Binds Cyclophilin D: A Potential Mechanism for Mitochondrial Protection. Molecules 2022; 27. [PMID: 36557795 DOI: 10.3390/molecules27248661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
(1) Background: (-)-Epigallocatechin-3-gallate (EGCG) has been reported to improve mitochondrial function in cell models, while the underlying mechanism is not clear. Cyclophilin D (CypD) is a key protein that regulates mitochondrial permeability transition pore (mPTP) opening. (2) Methods: In this study, we found that EGCG directly binds to CypD and this interaction was investigated by surface plasmon resonance (SPR), nuclear magnetic resonance (NMR) and molecular dynamic (MD) simulation. (3) Results: SPR showed an affinity of 2.7 × 10-5 M. The binding sites of EGCG on CypD were mapped to three regions by 2D NMR titration, which are Region 1 (E23-V29), Region 2 (T89-G104) and Region 3 (G124-I133). Molecular docking showed binding interface consistent with 2D NMR titration. MD simulations revealed that at least two conformations of EGCG-CypD complex exist, one with E23, D27, L90 and V93 as the most contributed residues and E23, L5 and I133 for the other. The major driven force for EGCG-CypD binding are Van der Waals and electrostatic interactions. (4) Conclusions: These results provide the structural basis for EGCG-CypD interaction, which might be a potential mechanism of how EGCG protects mitochondrial functions.
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Li X, Yang M, Sun H, Ferdous MRU, Gao L, Zhao J, Song Y. Liver cyclophilin D deficiency inhibits the progression of early NASH by ameliorating steatosis and inflammation. Biochem Biophys Res Commun 2022; 594:168-176. [PMID: 35085894 DOI: 10.1016/j.bbrc.2022.01.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/08/2022] [Accepted: 01/15/2022] [Indexed: 11/29/2022]
Abstract
Cyclophilin D (CypD) can stimulate the opening of the membrane permeability transition pore (mPTP) and regulate mitochondrial function. Whole-body knockout of CypD improved high fat diet-induced hepatic steatosis by reducing the excess opening of the mPTP and lipid deposition. However, whether CypD significantly ameliorates nonalcoholic steatohepatitis (NASH) has not been studied. Therefore, we established liver-specific CypD knockout (CypD LKO) mice and fed a HFHC diet to induce NASH. Compared with the wild-type mice, the CypD LKO not only showed improved lipid deposition and insulin resistance by increasing fatty acid oxidation but also displayed ameliorated hepatic inflammation, although the symptoms of fibrosis in the NASH model were not significantly improved. In addition, we used bile duct ligation (BDL) or a 0.1% 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) diet to induce cholestatic disease and found that CypD LKO had also no significant effect on acute fibrosis. Thus, CypD LKO can inhibit the progression of early NASH by ameliorating steatosis and inflammatory symptoms. These results suggest a new strategy for the treatment of early NASH.
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Affiliation(s)
- Xiaoling Li
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China
| | - Mengjiao Yang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China
| | - Hang Sun
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Department of Endocrinology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China
| | - Md Reyad Ul Ferdous
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Department of Endocrinology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China
| | - Ling Gao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China
| | - Jiajun Zhao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China.
| | - Yongfeng Song
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, Shandong, 250021, China; Department of Endocrinology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, 250021, China; Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, Shandong, 250021, China; Shandong Institute of Endocrine & Metabolic Diseases, Jinan, China.
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7
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Gierhardt M, Pak O, Sydykov A, Kraut S, Schäffer J, Garcia C, Veith C, Zeidan EM, Brosien M, Quanz K, Esfandiary A, Saraji A, Hadzic S, Kojonazarov B, Wilhelm J, Ghofrani HA, Schermuly RT, Seeger W, Grimminger F, Herden C, Schulz R, Weissmann N, Heger J, Sommer N. Genetic deletion of p66shc and/or cyclophilin D results in decreased pulmonary vascular tone. Cardiovasc Res 2022; 118:305-315. [PMID: 33119054 PMCID: PMC8752355 DOI: 10.1093/cvr/cvaa310] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 10/15/2020] [Indexed: 11/13/2022] Open
Abstract
AIMS The pulmonary vascular tone and hypoxia-induced alterations of the pulmonary vasculature may be regulated by the mitochondrial membrane permeability transition pore (mPTP) that controls mitochondrial calcium load and apoptosis. We thus investigated, if the mitochondrial proteins p66shc and cyclophilin D (CypD) that regulate mPTP opening affect the pulmonary vascular tone. METHODS AND RESULTS Mice deficient for p66shc (p66shc-/-), CypD (CypD-/-), or both proteins (p66shc/CypD-/-) exhibited decreased pulmonary vascular resistance (PVR) compared to wild-type mice determined in isolated lungs and in vivo. In contrast, systemic arterial pressure was only lower in CypD-/- mice. As cardiac function and pulmonary vascular remodelling did not differ between genotypes, we determined alterations of vascular contractility in isolated lungs and calcium handling in pulmonary arterial smooth muscle cells (PASMC) as underlying reason for decreased PVR. Potassium chloride (KCl)-induced pulmonary vasoconstriction and KCl-induced cytosolic calcium increase determined by Fura-2 were attenuated in all gene-deficient mice. In contrast, KCl-induced mitochondrial calcium increase determined by the genetically encoded Mito-Car-GECO and calcium retention capacity were increased only in CypD-/- and p66shc/CypD-/- mitochondria indicating that decreased mPTP opening affected KCl-induced intracellular calcium peaks in these cells. All mouse strains showed a similar pulmonary vascular response to chronic hypoxia, while acute hypoxic pulmonary vasoconstriction was decreased in gene-deficient mice indicating that CypD and p66shc regulate vascular contractility but not remodelling. CONCLUSIONS We conclude that p66shc specifically regulates the pulmonary vascular tone, while CypD also affects systemic pressure. However, only CypD acts via regulation of mPTP opening and mitochondrial calcium regulation.
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MESH Headings
- Animals
- Arterial Pressure
- Calcium/metabolism
- Calcium Signaling
- Cell Proliferation
- Cells, Cultured
- Peptidyl-Prolyl Isomerase F/deficiency
- Peptidyl-Prolyl Isomerase F/genetics
- Disease Models, Animal
- Gene Deletion
- Hypertension, Pulmonary/enzymology
- Hypertension, Pulmonary/etiology
- Hypertension, Pulmonary/genetics
- Hypertension, Pulmonary/physiopathology
- Hypoxia/complications
- Mice, Inbred C57BL
- Mice, Knockout
- Mitochondria/enzymology
- Mitochondria/genetics
- Mitochondrial Permeability Transition Pore/metabolism
- Pulmonary Artery/enzymology
- Pulmonary Artery/physiopathology
- Src Homology 2 Domain-Containing, Transforming Protein 1/deficiency
- Src Homology 2 Domain-Containing, Transforming Protein 1/genetics
- Vascular Remodeling
- Vascular Resistance
- Vasoconstriction
- Mice
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Affiliation(s)
- Mareike Gierhardt
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA) - CONICET - Partner Institute of the Max Planck Society, Buenos Aires, Argentina
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Member of the German Center for Lung Research (DZL), Member of the Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany
| | - Oleg Pak
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Akylbek Sydykov
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Simone Kraut
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Julia Schäffer
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Claudia Garcia
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Christine Veith
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Esraa M Zeidan
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, El-Minia, Egypt
| | - Monika Brosien
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Karin Quanz
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Azadeh Esfandiary
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Alireza Saraji
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Stefan Hadzic
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Baktybek Kojonazarov
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Institute for Lung Health (ILH), Giessen, Germany
| | - Jochen Wilhelm
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Institute for Lung Health (ILH), Giessen, Germany
| | - Hossein A Ghofrani
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Department of Medicine, Imperial College London, Du Cane Road, Hammersmith Campus, London, W12 0NN, UK
| | - Ralph T Schermuly
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Werner Seeger
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Member of the German Center for Lung Research (DZL), Member of the Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany
| | - Friedrich Grimminger
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Christiane Herden
- Institute of Veterinary Pathology, Justus-Liebig University, Giessen, Germany
| | - Rainer Schulz
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
| | - Norbert Weissmann
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Jacqueline Heger
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
| | - Natascha Sommer
- Excellence Cluster Cardio Pulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
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8
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Qamar A, Zhao J, Xu L, McLeod P, Huang X, Jiang J, Liu W, Haig A, Zhang ZX. Cyclophilin D Regulates the Nuclear Translocation of AIF, Cardiac Endothelial Cell Necroptosis and Murine Cardiac Transplant Injury. Int J Mol Sci 2021; 22:11038. [PMID: 34681708 PMCID: PMC8540562 DOI: 10.3390/ijms222011038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/23/2021] [Accepted: 10/08/2021] [Indexed: 12/26/2022] Open
Abstract
Ischemia-reperfusion injury (IRI) is an inevitable consequence of organ transplant procedure and associated with acute and chronic organ rejection in transplantation. IRI leads to various forms of programmed cell death, which worsens tissue damage and accelerates transplant rejection. We recently demonstrated that necroptosis participates in murine cardiac microvascular endothelial cell (MVEC) death and murine cardiac transplant rejection. However, MVEC death under a more complex IRI model has not been studied. In this study, we found that simulating IRI conditions in vitro by hypoxia, reoxygenation and treatment with inflammatory cytokines induced necroptosis in MVECs. Interestingly, the apoptosis-inducing factor (AIF) translocated to the nucleus during MVEC necroptosis, which is regulated by the mitochondrial permeability molecule cyclophilin D (CypD). Furthermore, CypD deficiency in donor cardiac grafts inhibited AIF translocation and mitigated graft IRI and rejection (n = 7; p = 0.002). Our studies indicate that CypD and AIF play significant roles in MVEC necroptosis and cardiac transplant rejection following IRI. Targeting CypD and its downstream AIF may be a plausible approach to inhibit IRI-caused cardiac damage and improve transplant survival.
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Affiliation(s)
- Adnan Qamar
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
| | - Jianqi Zhao
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, 3808 Jiefang Road, Changchun 130021, China
| | - Laura Xu
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
| | - Patrick McLeod
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
| | - Xuyan Huang
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
| | - Jifu Jiang
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
| | - Weihua Liu
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
| | - Aaron Haig
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
| | - Zhu-Xu Zhang
- Matthew Mailing Centre for Translational Transplantation Studies, London Health Sciences Centre, B4-231, 339 Windermere Road, London, ON N6A 5A5, Canada; (A.Q.); (J.Z.); (L.X.); (P.M.); (X.H.); (J.J.)
- Department of Pathology, Western University, 1151 Richmond Street, London, ON N6A 3K7, Canada; (W.L.); (A.H.)
- Multi-Organ Transplant Program, London Health Sciences Centre, London, ON N6A 5A5, Canada
- Division of Nephrology, Department of Medicine, Western University, London, ON N6A 3K7, Canada
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9
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Liang L, Lin R, Xie Y, Lin H, Shao F, Rui W, Chen H. The Role of Cyclophilins in Inflammatory Bowel Disease and Colorectal Cancer. Int J Biol Sci 2021; 17:2548-2560. [PMID: 34326693 PMCID: PMC8315013 DOI: 10.7150/ijbs.58671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022] Open
Abstract
Cyclophilins (Cyps) is a kind of ubiquitous protein family in organisms, which has biological functions such as promoting intracellular protein folding and participating in the pathological processes of inflammation and tumor. Inflammatory bowel disease (IBD) and colorectal cancer (CRC) are two common intestinal diseases, but the etiology and pathogenesis of these two diseases are still unclear. IBD and CRC are closely associated, IBD has always been considered as one of the main risks of CRC. However, the role of Cyps in these two related intestinal diseases is rarely studied and reported. In this review, the expression of CypA, CypB and CypD in IBD, especially ulcerative colitis (UC), and CRC, their relationship with the development of these two intestinal diseases, as well as the possible pathogenesis, were briefly summarized, so as to provide modest reference for clinical researches and treatments in future.
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Affiliation(s)
- Lifang Liang
- Department of Pathogenic Biology and Immunology, School of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China
| | - Rongxiao Lin
- Centrefor Novel Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China
| | - Ying Xie
- Centrefor Novel Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China
| | - Huaqing Lin
- Centrefor Novel Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China.,GDPU-HKU Zhongshan Biomedical Innovation Plaform, Zhongshan 528437, Guangdong Province, PR China.,Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China
| | - Fangyuan Shao
- Cancer Center, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Wen Rui
- Centrefor Novel Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China.,Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangzhou 510006, Guangdong Province, PR China.,Guangdong Cosmetics Engineering & Technology Research Center,Guangzhou 510006, Guangdong Province, PR China
| | - Hongyuan Chen
- Department of Pathogenic Biology and Immunology, School of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China.,GDPU-HKU Zhongshan Biomedical Innovation Plaform, Zhongshan 528437, Guangdong Province, PR China.,Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, PR China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangzhou 510006, Guangdong Province, PR China.,Guangdong Cosmetics Engineering & Technology Research Center,Guangzhou 510006, Guangdong Province, PR China
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10
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Chen MW, Santos P, Kulikowicz E, Koehler RC, Lee JK, Martin LJ. Targeting the mitochondrial permeability transition pore for neuroprotection in a piglet model of neonatal hypoxic-ischemic encephalopathy. J Neurosci Res 2021; 99:1550-1564. [PMID: 33675112 DOI: 10.1002/jnr.24821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 02/17/2021] [Indexed: 11/07/2022]
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) causes significant morbidity despite treatment with therapeutic hypothermia. Mitochondrial dysfunction may drive the mechanisms underlying neuronal cell death, thereby making mitochondria prime targets for neuroprotection. The mitochondrial permeability transition pore (mPTP) is one such target within mitochondria. In adult animal models, mPTP inhibition is neuroprotective. However, evidence for mPTP inhibition in neonatal models of neurologic disease is less certain. We tested the therapeutic efficacy of the mPTP small molecule inhibitor GNX-4728 and examined the developmental presence of brain mPTP proteins for drug targeting in a neonatal piglet model of hypoxic-ischemic brain injury. Male neonatal piglets were randomized to hypoxia-ischemia (HI) or sham procedure with GNX-4728 (15 mg/kg, IV) or vehicle (saline/cyclodextrin/DMSO, IV). GNX-4728 was administered as a single dose within 5 min after resuscitation from bradycardic arrest. Normal, ischemic, and injured neurons were counted in putamen and somatosensory cortex using hematoxylin and eosin staining. In separate neonatal and juvenile pigs, western blots of putamen mitochondrial-enriched fractions were used to evaluate mitochondrial integrity and the presence of mPTP proteins. We found that a single dose of GNX-4728 did not protect putamen and cortical neurons from cell death after HI. However, loss of mitochondrial matrix integrity occurred within 6h after HI, and while mPTP components are present in the neonatal brain their levels were significantly different compared to that of a mature juvenile brain. Thus, the neonatal brain mPTP may not be a good target for current neurotherapeutic drugs that are developed based on adult mitochondria.
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Affiliation(s)
- May W Chen
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Polan Santos
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ewa Kulikowicz
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Raymond C Koehler
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jennifer K Lee
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lee J Martin
- Department of Neuroscience and Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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11
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Ye F, Li X, Liu Y, Jiang A, Li X, Yang L, Chang W, Yuan J, Chen J. CypD deficiency confers neuroprotection against mitochondrial abnormality caused by lead in SH-SY5Y cell. Toxicol Lett 2020; 323:25-34. [PMID: 31874198 DOI: 10.1016/j.toxlet.2019.12.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 11/28/2019] [Accepted: 12/18/2019] [Indexed: 12/15/2022]
Abstract
Mitochondrial permeability transition (MPT), which is mainly regulated by cyclophilin D (CypD) encoded by ppif gene, is an early event that occurs during mitochondrial stimuli exposure. Lead (Pb) induces MPT and subsequently causes mitochondrial abnormality, followed by events, including oxidative stress and cell death. Here, we generated a ppif-/- SH-SY5Y cell line to determine the role of CypD in Pb-induced mitochondrial abnormality. CypD deficiency significantly blocked mitochondrial permeability transition pore (MPTP) opening and inhibited mitochondrial membrane potential (MMP) collapse, as well as mitochondrial structure damage and fragmentation caused by Pb. Mitochondria fragmentation and MMP collapse, accompanying with Pb-induced downregulation of Glut1 and Glut3 and inactivation of AMPK signaling pathway, could impair the energy supply in wildtype cells. Meanwhile, ppif knockout can alleviate these impairments and maintain the energy supply. In addition, reactive oxygen species accumulation and cell death caused by Pb can also be attenuated by ppif knockout, thereby promoting cell survival. Our study tends to identify CypD as an important contributor to Pb-induced mitochondrial abnormality and provides a potential strategy to inhibit Pb neurotoxicity.
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Affiliation(s)
- Fang Ye
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
| | - Xiaoyi Li
- Center for Translational Medicine, Wuhan Union Hospital, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yawen Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Anli Jiang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xintong Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Luoyao Yang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Wei Chang
- Department of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, PR China
| | - Jing Yuan
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Jun Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
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12
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Sun T, Ding W, Xu T, Ao X, Yu T, Li M, Liu Y, Zhang X, Hou L, Wang J. Parkin Regulates Programmed Necrosis and Myocardial Ischemia/Reperfusion Injury by Targeting Cyclophilin-D. Antioxid Redox Signal 2019; 31:1177-1193. [PMID: 31456416 DOI: 10.1089/ars.2019.7734] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aims: Cardiomyocyte death critically contributes to the pathogenesis of cardiac disorders, such as myocardial infarction, heart failure, and cardiac ischemia/reperfusion (I/R) injury. As one of the main forms of cardiac cell death, necrosis plays a critical role in heart diseases. Multiple signaling pathways of necrosis have been demonstrated, in which death receptors, receptor-interacting serine/threonine-protein 1 and 3 kinases, and cyclophilin-D (CypD) have been deeply implicated. However, the fundamental mechanism underlying myocardial necroptosis, especially the mitochondrial permeability transition pore (mPTP)-CypD-dependent death pathway, is poorly understood. Parkin functions as an E3 ubiquitin protein ligase that mainly mediates mitophagy cascades. As yet, it is not clear whether Parkin participates in regulating necrosis and myocardial I/R injury. Results: Here, our results showed that Parkin mediated mitophagy and inhibited necrosis under oxidative stress. In further exploring the underlying mechanisms, we found that Parkin suppressed mPTP opening by catalyzing the ubiquitination of CypD in necrotic cascades, which were not involved in Parkin-regulated mitophagy. Parkin inhibited necrosis, reduced myocardial I/R injury, and improved cardiac function. Innovation: Our present work reveals a highlighted connection between the mitochondrial matrix-localized Parkin and the mPTP-CypD-dependent necrotic signaling pathway in cardiac injury. Conclusion: Our results revealed a novel myocardial necrotic regulating model composed of Parkin, CypD, and mPTP, which may provide potential therapeutic targets and strategies to modulate the levels of these molecules.
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Affiliation(s)
- Teng Sun
- Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Wei Ding
- Department of Comprehensive Internal Medicine, Affiliated Hospital, Qingdao University, Qingdao, China
| | - Tao Xu
- Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Xiang Ao
- Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Tao Yu
- Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Mengyang Li
- School of Basic Medical Sciences, Qingdao University, Qingdao, China
| | - Ying Liu
- Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Xuejuan Zhang
- Department of Comprehensive Internal Medicine, Affiliated Hospital, Qingdao University, Qingdao, China
| | - Lin Hou
- School of Basic Medical Sciences, Qingdao University, Qingdao, China
| | - Jianxun Wang
- Institute for Translational Medicine, Qingdao University, Qingdao, China
- School of Basic Medical Sciences, Qingdao University, Qingdao, China
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13
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Papu John AS, Kundu S, Pushpakumar S, Amin M, Tyagi SC, Sen U. Hydrogen sulfide inhibits Ca 2+-induced mitochondrial permeability transition pore opening in type-1 diabetes. Am J Physiol Endocrinol Metab 2019; 317:E269-E283. [PMID: 31039005 PMCID: PMC6732471 DOI: 10.1152/ajpendo.00251.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 12/29/2022]
Abstract
Hydrogen sulfide (H2S) attenuates N-methyl-d-aspartate receptor-R1 (NMDA-R1) and mitigates diabetic renal damage; however, the molecular mechanism is not well known. Whereas NMDA-R1 facilitates Ca2+ permeability, H2S is known to inhibit L-type Ca2+ channel. High Ca2+ activates cyclophilin D (CypD), a gatekeeper protein of mitochondrial permeability transition pore (MPTP), thus facilitating molecular exchange between matrix and cytoplasm causing oxidative outburst and cell death. We tested the hypothesis of whether NMDA-R1 mediates Ca2+ influx causing CypD activation and MPTP opening leading to oxidative stress and renal injury in diabetes. We also tested whether H2S treatment blocks Ca2+ channel and thus inhibits CypD and MPTP opening to prevent renal damage. C57BL/6J and Akita (C57BL/6J-Ins2Akita) mice were treated without or with H2S donor GYY4137 (0.25 mg·kg-1·day-1 ip) for 8 wk. In vitro studies were performed using mouse glomerular endothelial cells. Results indicated that low levels of H2S and increased expression of NMDA-R1 in diabetes induced Ca2+ permeability, which was ameliorated by H2S treatment. We observed cytosolic Ca2+ influx in hyperglycemic (HG) condition along with mitochondrial-CypD activation, increased MPTP opening, and oxidative outburst, which were mitigated with H2S treatment. Renal injury biomarker KIM-1 was upregulated in HG conditions and normalized following H2S treatment. Inhibition of NMDA-R1 by pharmacological blocker MK-801 revealed similar results. We conclude that NMDA-R1-mediated Ca2+ influx in diabetes induces MPTP opening via CypD activation leading to increased oxidative stress and renal injury, and H2S protects diabetic kidney from injury by blocking mitochondrial Ca2+ permeability through NMDA-R1 pathway.
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Affiliation(s)
- A Sashi Papu John
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
| | - Sourav Kundu
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
| | - Sathnur Pushpakumar
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
| | - Matthew Amin
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
| | - Suresh C Tyagi
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
| | - Utpal Sen
- Department of Physiology, University of Louisville School of Medicine , Louisville, Kentucky
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14
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Wei-LaPierre L, Ainbinder A, Tylock KM, Dirksen RT. Substrate-dependent and cyclophilin D-independent regulation of mitochondrial flashes in skeletal and cardiac muscle. Arch Biochem Biophys 2019; 665:122-131. [PMID: 30872061 PMCID: PMC6499064 DOI: 10.1016/j.abb.2019.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 01/20/2023]
Abstract
Mitochondrial flashes (mitoflashes) are stochastic events in the mitochondrial matrix detected by mitochondrial-targeted cpYFP (mt-cpYFP). Mitoflashes are quantal bursts of reactive oxygen species (ROS) production accompanied by modest matrix alkalinization and depolarization of the mitochondrial membrane potential. Mitoflashes are fundamental events present in a wide range of cell types. To date, the precise mechanisms for mitoflash generation and termination remain elusive. Transient opening of the mitochondrial membrane permeability transition pore (mPTP) during a mitoflash is proposed to account for the mitochondrial membrane potential depolarization. Here, we set out to compare the tissue-specific effects of cyclophilin D (CypD)-deficiency and mitochondrial substrates on mitoflash activity in skeletal and cardiac muscle. In contrast to previous reports, we found that CypD knockout did not alter the mitoflash frequency or other mitoflash properties in acutely isolated cardiac myocytes, skeletal muscle fibers, or isolated mitochondria from skeletal muscle and the heart. However, in skeletal muscle fibers, CypD deficiency resulted in a parallel increase in both activity-dependent mitochondrial Ca2+ uptake and activity-dependent mitoflash activity. Increases in both mitochondrial Ca2+ uptake and mitoflash activity following electrical stimulation were abolished by inhibition of mitochondrial Ca2+ uptake. We also found that mitoflash frequency and amplitude differ greatly between intact skeletal muscle fibers and cardiac myocytes, but that this difference is absent in isolated mitochondria. We propose that this difference may be due, in part, to differences in substrate availability in intact skeletal muscle fibers (primarily glycolytic) and cardiac myocytes (largely oxidative). Overall, we find that CypD does not contribute significantly in mitoflash biogenesis under basal conditions in skeletal and cardiac muscle, but does regulate mitoflash events during muscle activity. In addition, tissue-dependent differences in mitoflash frequency are strongly regulated by mitochondrial substrate availability.
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Affiliation(s)
- Lan Wei-LaPierre
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA.
| | - Alina Ainbinder
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Kevin M Tylock
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Robert T Dirksen
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA
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15
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Xu T, Ding W, Ao X, Chu X, Wan Q, Wang Y, Xiao D, Yu W, Li M, Yu F, Wang J. ARC regulates programmed necrosis and myocardial ischemia/reperfusion injury through the inhibition of mPTP opening. Redox Biol 2018; 20:414-426. [PMID: 30415165 PMCID: PMC6230922 DOI: 10.1016/j.redox.2018.10.023] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/23/2018] [Accepted: 10/31/2018] [Indexed: 12/22/2022] Open
Abstract
Necrosis is a key factor in myocardial injury during cardiac pathological processes, such as myocardial infarction (MI), ischemia/reperfusion (I/R) injury and heart failure. Increasing evidence suggests that several aspects of necrosis are programmed and tightly regulated, so targeting the necrosis process has become a new trend for myocardial protection. Multiple cellular signaling pathways have been implicated in necrotic cell death, such as the death receptor-mediated extrinsic and mitochondrial intrinsic pathways. However, the precise mechanisms underlying myocardial necrosis remain unclear. In this study, we showed that apoptosis repressor with caspase recruitment domain (ARC) participated in the mitochondrial intrinsic pathway and inhibited myocardial necrosis by preventing the opening of the mitochondrial permeability transition pore (mPTP). ARC attenuated necrotic cell death triggered by exposure to 500 μM hydrogen peroxide (H2O2) in the cardiomyocyte cell line H9c2. In mice, ARC ameliorated myocardial necrosis, reduced the myocardial infarct size and improved long-term heart function during I/R injury. Mechanistically, it has been shown that the inhibition of necrosis by ARC was dependent on its mitochondrial localization and that ARC prevented the opening of mPTP by targeting CypD, the main regulator of mPTP. In addition, ARC expression was negatively regulated by the transcription factor p53 at the transcriptional level during the necrosis process. These findings identified the novel role of ARC in myocardial necrosis and delineated the p53-ARC-CypD/mPTP necrosis pathway during ischemia- and oxidative stress-induced myocardial damage, which can provide a new strategy for cardiac protection. ARC attenuates necrosis both in cardiomyocytes exposed to H2O2 and in mouse hearts with ischemia/reperfusion injury. The attenuation of necrosis by ARC depends on its mitochondrial localization and its inhibition of mPTP opening. ARC targets CypD and prevents mPTP opening. p53 regulates necrosis by suppression of ARC expression at the transcriptional level.
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Affiliation(s)
- Tao Xu
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Wei Ding
- Affiliated Hospital, Qingdao University, Qingdao, China
| | - Xiang Ao
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Xianming Chu
- Affiliated Hospital, Qingdao University, Qingdao, China
| | - Qinggong Wan
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Yu Wang
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; School of Basic Medical Sciences, Qingdao University, Qingdao, China
| | - Dandan Xiao
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Wanpeng Yu
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Mengyang Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Fei Yu
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Jianxun Wang
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; School of Basic Medical Sciences, Qingdao University, Qingdao, China.
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16
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Gan X, Zhang L, Liu B, Zhu Z, He Y, Chen J, Zhu J, Yu H. CypD-mPTP axis regulates mitochondrial functions contributing to osteogenic dysfunction of MC3T3-E1 cells in inflammation. J Physiol Biochem 2018; 74:395-402. [PMID: 29679227 DOI: 10.1007/s13105-018-0627-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 03/26/2018] [Indexed: 02/05/2023]
Abstract
Bone is a dynamic organ, the bone-forming osteoblasts and bone-resorbing osteoclasts form the physiological basis of bone remodeling process. During pathological process of numerous inflammatory diseases, these two aspects are uncoupled and the balance is usually tipped in favor of bone destruction. Evidence suggests that the inflammatory destruction of bone is mainly attributed to oxidative stress and is closely related to mitochondrial dysfunction. The mechanisms underlying osteogenic dysfunction in inflammation still need further investigation. Reactive oxygen species (ROS) is associated with mitochondrial dysfunction and cellular damage. Here, we reported an unexplored role of cyclophilin D (CypD), the major modulator of mitochondrial permeability transition pore (mPTP), and the CypD-mPTP axis in inflammation-induced mitochondrial dysfunction and bone damage. And the protective effects of knocking down CypD by siRNA interference or the addition of cyclosporin A (CsA), an inhibitor of CypD, were evidenced by rescued mitochondrial function and osteogenic function of osteoblast under tumor necrosis factor-α (TNF-α) treatment. These findings provide new insights into the role of CypD-mPTP-dependent mitochondrial pathway in the inflammatory bone injury. The protective effect of CsA or other moleculars affecting the mPTP formation may hold promise as a potential novel therapeutic strategy for inflammation-induced bone damage via mitochondrial pathways.
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Affiliation(s)
- Xueqi Gan
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Ling Zhang
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Beilei Liu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Zhuoli Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Yuting He
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Junsheng Chen
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Junfei Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China
| | - Haiyang Yu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Haiyang Yu 14 S Renmin Rd. 3rd Sec., Chengdu, 610041, Sichuan, People's Republic of China.
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17
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Shirole NH, Pal D, Kastenhuber ER, Senturk S, Boroda J, Pisterzi P, Miller M, Munoz G, Anderluh M, Ladanyi M, Lowe SW, Sordella R. TP53 exon-6 truncating mutations produce separation of function isoforms with pro-tumorigenic functions. eLife 2016; 5. [PMID: 27759562 PMCID: PMC5092050 DOI: 10.7554/elife.17929] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/17/2016] [Indexed: 12/20/2022] Open
Abstract
TP53 truncating mutations are common in human tumors and are thought to give rise to p53-null alleles. Here, we show that TP53 exon-6 truncating mutations occur at higher than expected frequencies and produce proteins that lack canonical p53 tumor suppressor activities but promote cancer cell proliferation, survival, and metastasis. Functionally and molecularly, these p53 mutants resemble the naturally occurring alternative p53 splice variant, p53-psi. Accordingly, these mutants can localize to the mitochondria where they promote tumor phenotypes by binding and activating the mitochondria inner pore permeability regulator, Cyclophilin D (CypD). Together, our studies reveal that TP53 exon-6 truncating mutations, contrary to current beliefs, act beyond p53 loss to promote tumorigenesis, and could inform the development of strategies to target cancers driven by these prevalent mutations. DOI:http://dx.doi.org/10.7554/eLife.17929.001
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Affiliation(s)
- Nitin H Shirole
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States.,Graduate Program in Genetics, Stony Brook University, Stony Brook, United States
| | - Debjani Pal
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States.,Graduate Program in Molecular and Cellular Biology, Stony Brook University, Stony Brook, United States
| | - Edward R Kastenhuber
- Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, United States
| | - Serif Senturk
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States
| | - Joseph Boroda
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States
| | - Paola Pisterzi
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States
| | - Madison Miller
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States
| | - Gustavo Munoz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States
| | - Marko Anderluh
- Department of Medicinal Chemistry, University of Ljubljana, Ljubljana, Slovenia
| | - Marc Ladanyi
- Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, United States
| | - Scott W Lowe
- Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, United States
| | - Raffaella Sordella
- Cold Spring Harbor Laboratory, Cold Spring Harbor, United States.,Graduate Program in Genetics, Stony Brook University, Stony Brook, United States.,Graduate Program in Molecular and Cellular Biology, Stony Brook University, Stony Brook, United States
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18
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Villmow M, Baumann M, Malesevic M, Sachs R, Hause G, Fändrich M, Balbach J, Schiene-Fischer C. Inhibition of Aβ(1-40) fibril formation by cyclophilins. Biochem J 2016; 473:1355-68. [PMID: 26994210 DOI: 10.1042/bcj20160098] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 03/16/2016] [Indexed: 12/16/2023]
Abstract
Cyclophilins interact directly with the Alzheimer's disease peptide Aβ (amyloid β-peptide) and are therefore involved in the early stages of Alzheimer's disease. Aβ binding to CypD (cyclophilin D) induces dysfunction of human mitochondria. We found that both CypD and CypA suppress in vitro fibril formation of Aβ(1-40) at substoichiometric concentrations when present early in the aggregation process. The prototypic inhibitor CsA (cyclosporin A) of both cyclophilins as well as the new water-soluble MM258 derivative prevented this suppression. A SPOT peptide array approach and NMR titration experiments confirmed binding of Aβ(1-40) to the catalytic site of CypD mainly via residues Lys(16)-Glu(22) The peptide Aβ(16-20) representing this section showed submicromolar IC50 values for the peptidyl prolyl cis-trans isomerase activity of CypD and CypA and low-micromolar KD values in ITC experiments. Chemical cross-linking and NMR-detected hydrogen-deuterium exchange experiments revealed a shift in the populations of small Aβ(1-40) oligomers towards the monomeric species, which we investigated in the present study as being the main process of prevention of Aβ fibril formation by cyclophilins.
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Affiliation(s)
- Marten Villmow
- Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, D-06120 Halle (Saale), Germany
| | - Monika Baumann
- Institute of Physics, Biophysics, Martin Luther University Halle-Wittenberg, Betty-Heimann-Straße 7, D-06120 Halle (Saale), Germany
| | - Miroslav Malesevic
- Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, D-06120 Halle (Saale), Germany Department of Enzymology, Institute for Biochemistry and Biotechnology, Martin Luther University Halle-Wittenberg, Weinbergweg 22, D-06120 Halle (Saale), Germany
| | - Rolf Sachs
- Institute of Physics, Biophysics, Martin Luther University Halle-Wittenberg, Betty-Heimann-Straße 7, D-06120 Halle (Saale), Germany
| | - Gerd Hause
- Martin Luther University Halle-Wittenberg, Biocenter, Weinbergweg 22, D-06120 Halle (Saale), Germany
| | - Marcus Fändrich
- Institute for Pharmaceutical Biotechnology, Ulm University, Helmholtzstraße 8/1, D-89081 Ulm, Germany
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin Luther University Halle-Wittenberg, Betty-Heimann-Straße 7, D-06120 Halle (Saale), Germany
| | - Cordelia Schiene-Fischer
- Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, D-06120 Halle (Saale), Germany Department of Enzymology, Institute for Biochemistry and Biotechnology, Martin Luther University Halle-Wittenberg, Weinbergweg 22, D-06120 Halle (Saale), Germany
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19
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Valasani KR, Sun Q, Fang D, Zhang Z, Yu Q, Guo Y, Li J, Roy A, ShiDu Yan S. Identification of a Small Molecule Cyclophilin D Inhibitor for Rescuing Aβ-Mediated Mitochondrial Dysfunction. ACS Med Chem Lett 2016; 7:294-9. [PMID: 26985318 DOI: 10.1021/acsmedchemlett.5b00451] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/06/2016] [Indexed: 11/29/2022] Open
Abstract
Cyclophilin D (CypD), a peptidylprolyl isomerase F (PPIase), plays a central role in opening the mitochondrial membrane permeability transition pore leading to cell death. CypD resides in the mitochondrial matrix, associates with the inner mitochondrial membrane, interacts with amyloid beta to exacerbate mitochondrial and neuronal stress and has been linked to Alzheimer's disease (AD). We report the biological activity of a small-molecule CypD inhibitor (C-9), which binds strongly to CypD and attenuates mitochondrial and cellular perturbation insulted by Aβ and calcium stress. Binding affinities for C-9 were determined using in vitro surface plasmon resonance. This compound antagonized calcium-mediated mitochondrial swelling, abolished Aβ-induced mitochondrial dysfunction as shown by increased cytochrome c oxidase activity and adenosine-5'-triphosphate levels, and inhibited CypD PPIase enzymatic activity by real-time fluorescence capture assay using Hamamatsu FDSS 7000. Compound C-9 seems a good candidate for further investigation as an AD drug.
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20
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Cheng A, Yang Y, Zhou Y, Maharana C, Lu D, Peng W, Liu Y, Wan R, Marosi K, Misiak M, Bohr VA, Mattson MP. Mitochondrial SIRT3 Mediates Adaptive Responses of Neurons to Exercise and Metabolic and Excitatory Challenges. Cell Metab 2016; 23:128-42. [PMID: 26698917 PMCID: PMC5141613 DOI: 10.1016/j.cmet.2015.10.013] [Citation(s) in RCA: 247] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 08/18/2015] [Accepted: 10/21/2015] [Indexed: 10/22/2022]
Abstract
The impact of mitochondrial protein acetylation status on neuronal function and vulnerability to neurological disorders is unknown. Here we show that the mitochondrial protein deacetylase SIRT3 mediates adaptive responses of neurons to bioenergetic, oxidative, and excitatory stress. Cortical neurons lacking SIRT3 exhibit heightened sensitivity to glutamate-induced calcium overload and excitotoxicity and oxidative and mitochondrial stress; AAV-mediated Sirt3 gene delivery restores neuronal stress resistance. In models relevant to Huntington's disease and epilepsy, Sirt3(-/-) mice exhibit increased vulnerability of striatal and hippocampal neurons, respectively. SIRT3 deficiency results in hyperacetylation of several mitochondrial proteins, including superoxide dismutase 2 and cyclophilin D. Running wheel exercise increases the expression of Sirt3 in hippocampal neurons, which is mediated by excitatory glutamatergic neurotransmission and is essential for mitochondrial protein acetylation homeostasis and the neuroprotective effects of running. Our findings suggest that SIRT3 plays pivotal roles in adaptive responses of neurons to physiological challenges and resistance to degeneration.
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Affiliation(s)
- Aiwu Cheng
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA.
| | - Ying Yang
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA; Department of Neurology, Wuhan University, Wuhan, Hubei 430071, China
| | - Ye Zhou
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Chinmoyee Maharana
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Daoyuan Lu
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Wei Peng
- Laboratory of Genetics, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Yong Liu
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Ruiqian Wan
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Krisztina Marosi
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Magdalena Misiak
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA; Laboratory of Molecular Gerontology, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Vilhelm A Bohr
- Laboratory of Molecular Gerontology, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA; Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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21
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Chen H, Liu C, Yin J, Chen Z, Xu J, Wang D, Zhu J, Zhang Z, Sun Y, Li A. Mitochondrial Cyclophilin D as a Potential Therapeutic Target for Ischemia-Induced Facial Palsy in Rats. Cell Mol Neurobiol 2015; 35:931-41. [PMID: 25820785 DOI: 10.1007/s10571-015-0188-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 03/25/2015] [Indexed: 10/23/2022]
Abstract
Many studies have demonstrated that ischemia could induce facial nerve (FN) injury. However, there is a lack of a suitable animal model for FN injury study and thus little knowledge is available about the precise mechanism for FN injury. The aims of this study were to establish a reliable FN injury model induced by blocking the petrosal artery and to investigate whether dysfunctional interaction between cyclophilin D (CypD) and mitochondrial permeability transition pore (MPTP) can mediate cell dysfunction in ischemic FN injury. The outcomes of ischemia-induced FN injury rat model were evaluated by behavioral assessment, histological observation, electrophysiology, and electron microscopy. Then the levels of CypD and protein that forms the MPTP were evaluated under the conditions with or without the treatment of Cyclosporin A (CsA), which has been found to disrupt MPTP through the binding of CypD. The blocking of petrosal artery caused significant facial palsy signs in the ischemia group but not in the sham group. Furthermore, ischemia can induce the dysfunction of facial nucleus neurons and destruction of the myelin sheath and increase the protein levels of CypD and MPTP protein compared with sham group. Interestingly, treatment with CsA significantly improved neurological function and reversed the ischemia-induced increase of CypD and MPTP proteins in ischemia group. These results demonstrated that blocking of petrosal artery in rats can induce FN injury and the mechanism may be related to the disruption of MPTP by CypD.
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Affiliation(s)
- Huizhen Chen
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Chnagtao Liu
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Jie Yin
- Department of Neurosurgery, Xuzhou Central Hospital, Xuzhou, Jiangsu, 221009, People's Republic of China
| | - Zhen Chen
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Jinwang Xu
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Duanlei Wang
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Jiaqiu Zhu
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Ziyuan Zhang
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Yong Sun
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China
| | - Aimin Li
- Department of Neurosurgery, The First People's Hospital of Lianyungang, 182 Tong Guan North Road, Lianyungang, Jiangsu, 222002, People's Republic of China.
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22
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Zhang Z, Wang Y, Yan S, Du F, Yan SS. NR2B-dependent cyclophilin D translocation suppresses the recovery of synaptic transmission after oxygen-glucose deprivation. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2225-2234. [PMID: 26232180 DOI: 10.1016/j.bbadis.2015.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 07/24/2015] [Accepted: 07/27/2015] [Indexed: 02/08/2023]
Abstract
N-methyl d-aspartate receptor (NMDA) subunit 2B (NR2B)-containing NMDA receptors and mitochondrial protein cyclophilin D (CypD) are well characterized in mediating neuronal death after ischemia, respectively. However, whether and how NR2B and CypD work together in mediating synaptic injury after ischemia remains elusive. Using an ex vivo ischemia model of oxygen-glucose deprivation (OGD) in hippocampal slices, we identified a NR2B-dependent mechanism for CypD translocation onto the mitochondrial inner membrane. CypD depletion (CypD null mice) prevented OGD-induced impairment in synaptic transmission recovery. Overexpression of neuronal CypD mice (CypD+) exacerbated OGD-induced loss of synaptic transmission. Inhibition of CypD-dependent mitochondrial permeability transition pore (mPTP) opening by cyclosporine A (CSA) attenuated ischemia-induced synaptic perturbation in CypD+ and non-transgenic (non-Tg) mice. The treatment of antioxidant EUK134 to suppress mitochondrial oxidative stress rescued CypD-mediated synaptic dysfunction following OGD in CypD+ slices. Furthermore, OGD provoked the interaction of CypD with P53, which was enhanced in slices overexpressing CypD but was diminished in CypD-null slices. Inhibition of p53 using a specific inhibitor of p53 (pifithrin-μ) attenuated the CypD/p53 interaction following OGD, along with a restored synaptic transmission in both non-Tg and CypD+ hippocampal slices. Our results indicate that OGD-induced CypD translocation potentiates CypD/P53 interaction in a NR2B dependent manner, promoting oxidative stress and loss of synaptic transmission. We also evaluate a new ex vivo chronic OGD-induced ischemia model for studying the effect of oxidative stress on synaptic damage.
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Affiliation(s)
- Zhihua Zhang
- Department of Pharmacology and Toxicology, and Higuchi Bioscience Center, University of Kansas, Lawrence, KS 66045
| | - Yongfu Wang
- Department of Pharmacology and Toxicology, and Higuchi Bioscience Center, University of Kansas, Lawrence, KS 66045
| | - Shijun Yan
- Department of Pharmacology and Toxicology, and Higuchi Bioscience Center, University of Kansas, Lawrence, KS 66045
| | - Fang Du
- Department of Pharmacology and Toxicology, and Higuchi Bioscience Center, University of Kansas, Lawrence, KS 66045
| | - Shirley Shidu Yan
- Department of Pharmacology and Toxicology, and Higuchi Bioscience Center, University of Kansas, Lawrence, KS 66045
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