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Acin‐Perez R, Benincá C, Fernandez del Rio L, Shu C, Baghdasarian S, Zanette V, Gerle C, Jiko C, Khairallah R, Khan S, Rincon Fernandez Pacheco D, Shabane B, Erion K, Masand R, Dugar S, Ghenoiu C, Schreiner G, Stiles L, Liesa M, Shirihai OS. Inhibition of ATP synthase reverse activity restores energy homeostasis in mitochondrial pathologies. EMBO J 2023; 42:e111699. [PMID: 36912136 PMCID: PMC10183817 DOI: 10.15252/embj.2022111699] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 03/14/2023] Open
Abstract
The maintenance of cellular function relies on the close regulation of adenosine triphosphate (ATP) synthesis and hydrolysis. ATP hydrolysis by mitochondrial ATP Synthase (CV) is induced by loss of proton motive force and inhibited by the mitochondrial protein ATPase inhibitor (ATPIF1). The extent of CV hydrolytic activity and its impact on cellular energetics remains unknown due to the lack of selective hydrolysis inhibitors of CV. We find that CV hydrolytic activity takes place in coupled intact mitochondria and is increased by respiratory chain defects. We identified (+)-Epicatechin as a selective inhibitor of ATP hydrolysis that binds CV while preventing the binding of ATPIF1. In cells with Complex-III deficiency, we show that inhibition of CV hydrolytic activity by (+)-Epichatechin is sufficient to restore ATP content without restoring respiratory function. Inhibition of CV-ATP hydrolysis in a mouse model of Duchenne Muscular Dystrophy is sufficient to improve muscle force without any increase in mitochondrial content. We conclude that the impact of compromised mitochondrial respiration can be lessened using hydrolysis-selective inhibitors of CV.
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Affiliation(s)
- Rebeca Acin‐Perez
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | - Cristiane Benincá
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | - Lucia Fernandez del Rio
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | - Cynthia Shu
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | - Siyouneh Baghdasarian
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | - Vanessa Zanette
- Department of BioinformaticsUniversity Federal of ParanaCuritibaBrazil
| | - Christoph Gerle
- Institute for Protein ResearchOsaka UniversitySuitaJapan
- RIKEN SPring‐8 CenterSayo‐gunJapan
| | - Chimari Jiko
- Institute for Integrated Radiation and Nuclear ScienceKyoto UniversityKyotoJapan
| | | | | | | | - Byourak Shabane
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
| | | | | | | | | | | | - Linsey Stiles
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Department of Molecular and Medical PharmacologyUniversity of CaliforniaLos AngelesCAUSA
| | - Marc Liesa
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Department of Molecular and Medical PharmacologyUniversity of CaliforniaLos AngelesCAUSA
- Molecular Cellular Integrative PhysiologyUniversity of CaliforniaLos AngelesCAUSA
- Institut de Biologia Molecular de Barcelona, IBMB, CSICBarcelonaCataloniaSpain
| | - Orian S Shirihai
- Department of Medicine, Endocrinology, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Metabolism Theme, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCAUSA
- Department of Molecular and Medical PharmacologyUniversity of CaliforniaLos AngelesCAUSA
- Molecular Cellular Integrative PhysiologyUniversity of CaliforniaLos AngelesCAUSA
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2
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Vike NL, Bari S, Stetsiv K, Walter A, Newman S, Kawata K, Bazarian JJ, Martinovich Z, Nauman EA, Talavage TM, Papa L, Slobounov SM, Breiter HC. A preliminary model of football-related neural stress that integrates metabolomics with transcriptomics and virtual reality. iScience 2022; 25:103483. [PMID: 35106455 PMCID: PMC8786649 DOI: 10.1016/j.isci.2021.103483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/23/2021] [Accepted: 11/19/2021] [Indexed: 12/06/2022] Open
Abstract
Research suggests contact sports affect neurological health. This study used permutation-based mediation statistics to integrate measures of metabolomics, neuroinflammatory miRNAs, and virtual reality (VR)-based motor control to investigate multi-scale relationships across a season of collegiate American football. Fourteen significant mediations (six pre-season, eight across-season) were observed where metabolites always mediated the statistical relationship between miRNAs and VR-based motor control (pSobelperm≤ 0.05; total effect > 50%), suggesting a hypothesis that metabolites sit in the statistical pathway between transcriptome and behavior. Three results further supported a model of chronic neuroinflammation, consistent with mitochondrial dysfunction: (1) Mediating metabolites were consistently medium-to-long chain fatty acids, (2) tricarboxylic acid cycle metabolites decreased across-season, and (3) accumulated head acceleration events statistically moderated pre-season metabolite levels to directionally model post-season metabolite levels. These preliminary findings implicate potential mitochondrial dysfunction and highlight probable peripheral blood biomarkers underlying repetitive head impacts in otherwise healthy collegiate football athletes. Permutation-based mediation statistics can be applied to multi-scale biology problems Fatty acids were a critical link between elevated miRNAs and motor control HAEs interacted with pre-season metabolite levels to model post-season levels Together, our observations point to brain-related mitochondrial dysfunction
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Affiliation(s)
- Nicole L Vike
- Warren Wright Adolescent Center Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Sumra Bari
- Warren Wright Adolescent Center Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Khrystyna Stetsiv
- Warren Wright Adolescent Center Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Alexa Walter
- Department of Kinesiology, Pennsylvania State University, University Park, PA 16801, USA
| | - Sharlene Newman
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA
| | - Keisuke Kawata
- Department of Kinesiology, School of Public Health-Bloomington, Indiana University, Bloomington, IN 47405, USA.,Program in Neuroscience, College of Arts and Sciences, Indiana University, Bloomington, IN 47405, USA
| | - Jeffrey J Bazarian
- Department of Emergency Medicine, University of Rochester, Rochester, NY 14627, USA
| | - Zoran Martinovich
- Warren Wright Adolescent Center Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Eric A Nauman
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.,School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA.,Department of Basic Medical Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Thomas M Talavage
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.,School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.,Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Linda Papa
- Department of Emergency Medicine, Orlando Regional Medical Center, Orlando, FL 32806, USA
| | - Semyon M Slobounov
- Department of Kinesiology, Pennsylvania State University, University Park, PA 16801, USA
| | - Hans C Breiter
- Warren Wright Adolescent Center Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Laboratory of Neuroimaging and Genetics, Department of Psychiatry, Massachusetts General Hospital and Harvard School of Medicine, Boston, MA 02114, USA
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3
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The δ subunit of F 1F o-ATP synthase is required for pathogenicity of Candida albicans. Nat Commun 2021; 12:6041. [PMID: 34654833 PMCID: PMC8519961 DOI: 10.1038/s41467-021-26313-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 09/24/2021] [Indexed: 11/08/2022] Open
Abstract
Fungal infections, especially candidiasis and aspergillosis, claim a high fatality rate. Fungal cell growth and function requires ATP, which is synthesized mainly through oxidative phosphorylation, with the key enzyme being F1Fo-ATP synthase. Here, we show that deletion of the Candida albicans gene encoding the δ subunit of the F1Fo-ATP synthase (ATP16) abrogates lethal infection in a mouse model of systemic candidiasis. The deletion does not substantially affect in vitro fungal growth or intracellular ATP concentrations, because the decrease in oxidative phosphorylation-derived ATP synthesis is compensated by enhanced glycolysis. However, the ATP16-deleted mutant displays decreased phosphofructokinase activity, leading to low fructose 1,6-bisphosphate levels, reduced activity of Ras1-dependent and -independent cAMP-PKA pathways, downregulation of virulence factors, and reduced pathogenicity. A structure-based virtual screening of small molecules leads to identification of a compound potentially targeting the δ subunit of fungal F1Fo-ATP synthases. The compound induces in vitro phenotypes similar to those observed in the ATP16-deleted mutant, and protects mice from succumbing to invasive candidiasis. Our findings indicate that F1Fo-ATP synthase δ subunit is required for C. albicans lethal infection and represents a potential therapeutic target.
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Mitochondrial K + Transport: Modulation and Functional Consequences. Molecules 2021; 26:molecules26102935. [PMID: 34069217 PMCID: PMC8156104 DOI: 10.3390/molecules26102935] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 01/28/2023] Open
Abstract
The existence of a K+ cycle in mitochondria has been predicted since the development of the chemiosmotic theory and has been shown to be crucial for several cellular phenomena, including regulation of mitochondrial volume and redox state. One of the pathways known to participate in K+ cycling is the ATP-sensitive K+ channel, MitoKATP. This channel was vastly studied for promoting protection against ischemia reperfusion when pharmacologically activated, although its molecular identity remained unknown for decades. The recent molecular characterization of MitoKATP has opened new possibilities for modulation of this channel as a mechanism to control cellular processes. Here, we discuss different strategies to control MitoKATP activity and consider how these could be used as tools to regulate metabolism and cellular events.
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Yoon D, Yoon C, Choi H, Noh H, Ok Y, Kim DH, Kim HS, Kim S. 1H-NMR-based Metabolomic Study of Miamiensis avidus-infected Olive Flounder. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Changshin Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Hyeonsoo Choi
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Hyeonkyung Noh
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Youngjun Ok
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Do-Hyung Kim
- Department of Aquatic Life Medicine; Pukyong National University; Busan 48513, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences and Genetic Engineering Institute; Pusan National University; Busan 46241, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
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Jüllig M, Hickey AJ, Middleditch MJ, Crossman DJ, Lee SC, Cooper GJS. Characterization of proteomic changes in cardiac mitochondria in streptozotocin-diabetic rats using iTRAQ™ isobaric tags. Proteomics Clin Appl 2012; 1:565-76. [PMID: 21136708 DOI: 10.1002/prca.200600831] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Diabetes now affects more than 5% of the world's population and heart failure is the most common cause of death amongst diabetic patients. Accumulating evidence supports a view that myocardial mitochondrial structural and functional changes are central to the onset of diabetic heart failure, but the exact nature of these changes at the proteomic level remains unclear.Here we report on proteomic changes in diabetic rat heart mitochondria following 120 days of streptozotocin-diabetes using the recently developed iTRAQ™ labeling method, which permits quantification of proteins directly from complex mixtures, bypassing the limitations associated with gel-based methods such as 2-DE. Of 252 unique proteins identified, 144 were represented in at least three of six individual paired experiments. Relative amounts of 65 proteins differed significantly between the groups, confirming that the cardiac mitochondrial proteome is indeed impacted by diabetes. The most significant changes were increased protein levels of enzymes involved in mitochondrial oxidation of long-chain fatty acids, which was also confirmed by enzyme assays, and decreased levels of multiple enzymes involved in oxidative phosphorylation and catabolism of short-chain fatty acids and branched-chain amino acids. We also found significant changes in levels of several enzymes linked to oxidative stress.
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Affiliation(s)
- Mia Jüllig
- School of Biological Sciences and Centre for Molecular Biodiscovery, University of Auckland, Auckland, New Zealand
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Li L, Zuo Z. Isoflurane postconditioning induces neuroprotection via Akt activation and attenuation of increased mitochondrial membrane permeability. Neuroscience 2011; 199:44-50. [PMID: 22040798 DOI: 10.1016/j.neuroscience.2011.10.022] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 10/11/2011] [Accepted: 10/13/2011] [Indexed: 01/08/2023]
Abstract
We have shown that isoflurane application at the onset of reperfusion (postconditioning) reduces brain ischemic injury in rats. This study was designed to determine whether this protection involved activation of prosurvival protein kinases and maintenance of normal mitochondrial membrane permeability. Two-month-old male rats were subjected to a 90-min middle cerebral arterial occlusion. They then were exposed or were not exposed to 2% isoflurane for 1 h. Ischemic penumbral cerebral cortex was harvested immediately and separated into the mitochondrial and cytosolic fractions. We showed that the mitochondrial nicotinamide adenine dinucleotide content in the ischemic penumbral cortex was significantly reduced, suggesting an increased mitochondrial membrane permeability. This increase was partly attenuated by isoflurane postconditioning. The mitochondrial adenosine diphosphate content in the penumbral cortex was reduced no matter whether the animals were postconditioned with isoflurane. The mitochondrial adenosine triphosphate concentration was not different among various experimental conditions. The phospho-Akt in the cytosolic and mitochondrial fractions of the ischemic penumbral cortex was higher than that in the control cortex. This increase trended to be higher in animals with isoflurane postconditioning. A similar change pattern was observed in the mitochondrial phospho-glycogen synthase kinase 3β, an Akt substrate that can regulate the mitochondrial membrane permeability. Isoflurane postconditioning reduced oxygen-glucose deprivation-induced injury of rat cortical neuronal cultures and increased phospho-Akt in these cells. The isoflurane postconditioning-induced protection in the neuronal cultures was decreased by the Akt inhibitor LY294002. These results suggest that isoflurane postconditioning effects may be mediated by Akt and involve reduced mitochondrial membrane permeability.
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Affiliation(s)
- L Li
- Department of Anesthesiology, University of Virginia, Charlottesville, VA 22908, USA
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Mitochondrial involvement in cardiac apoptosis during ischemia and reperfusion: can we close the box? Cardiovasc Toxicol 2010; 9:211-27. [PMID: 19855945 DOI: 10.1007/s12012-009-9055-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Myocardial ischemia is the main cause of death in the Western societies. Therapeutic strategies aimed to protect the ischemic myocardium have been extensively studied. Reperfusion is the definitive treatment for acute coronary syndromes, especially acute myocardial infarction; however, reperfusion has the potential to exacerbate tissue injury, a process termed reperfusion injury. Ischemia/reperfusion (I/R) injury may lead to cardiac arrhythmias and contractile dysfunction that involve apoptosis and necrosis in the heart. The present review describes the mitochondrial role on cardiomyocyte death and some potential pharmacological strategies aimed at preventing the opening of the box, i.e., mitochondrial dysfunction and membrane permeabilization that result into cell death. Data in the literature suggest that mitochondrial disruption during I/R can be avoided, although uncertainties still exist, including the fact that the optimal windows of treatment are still fairly unknown. Despite this, the protection of cardiac mitochondrial function should be critical for the patient survival, and new strategies to avoid mitochondrial alterations should be designed to avoid cardiomyocyte loss.
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Helling TS. The Liver and Hemorrhagic Shock. J Am Coll Surg 2005; 201:774-83. [PMID: 16256922 DOI: 10.1016/j.jamcollsurg.2005.05.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Revised: 04/29/2005] [Accepted: 05/27/2005] [Indexed: 11/25/2022]
Affiliation(s)
- Thomas S Helling
- Department of Surgery, University of Missouri-Kansas City School of Medicine and the University of Missouri-Kansas City Shock/Trauma Research Institute, Kansas City, MO, USA
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Mitochondrial Injury by Ischemia and Reperfusion. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/b978-0-12-152517-0.50011-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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11
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Lin AA, Miller WM. CHO cell responses to low oxygen: Regulation of oxygen consumption and sensitization to oxidative stress. Biotechnol Bioeng 1992; 40:505-16. [DOI: 10.1002/bit.260400409] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- D A Harris
- Department of Biochemistry, University of Oxford, U.K
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Uyemura SA, Curti C. Respiration and mitochondrial ATPase in energized mitochondria during isoproterenol-induced cell injury of myocardium. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1991; 23:1143-9. [PMID: 1838529 DOI: 10.1016/0020-711x(91)90156-h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
1. Respiration of mitochondria, membrane potential and mitochondrial ATPase under energized conditions were studied in rat myocardium during cell injury induced by treatment with isoproterenol. 2. Increase in the state 4 rate of respiration and ADP:O ratio, as well as decrease in the state 3 rate and Respiratory Control Ratio (RCR) were found. 3. The optimum pH for RCR and for maximum ATPase activity was shifted to lower values. 4. The state 3 respiration was more sensitive to oligomycin inhibition. 5. The mitochondria showed lower ability to generate membrane potential. 6. An increase in the K0.5 values for catalytic sites II and III of mitochondrial ATPase at pH 7.4 and 5.5 was found. 7. These results are consistent with alterations on the integrity of mitochondrial membrane, and corroborate with the hypothesis of changes on the mitochondrial ATPase during isoproterenol-induced cell injury of myocardium.
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Affiliation(s)
- S A Uyemura
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas-USP, Ribeirão Preto, S.P., Brasil
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