1
|
Turrin G, Lo Cascio E, Giacon N, Fantinati A, Cristofori V, Illuminati D, Preti D, Morciano G, Pinton P, Agyapong ED, Trapella C, Arcovito A. Spiropiperidine-Based Oligomycin-Analog Ligands To Counteract the Ischemia-Reperfusion Injury in a Renal Cell Model. J Med Chem 2024; 67:586-602. [PMID: 37991993 PMCID: PMC10789258 DOI: 10.1021/acs.jmedchem.3c01792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/24/2023] [Accepted: 10/30/2023] [Indexed: 11/24/2023]
Abstract
Finding a therapy for ischemia-reperfusion injury, which consists of cell death following restoration of blood flowing into the artery affected by ischemia, is a strong medical need. Nowadays, only the use of broad-spectrum molecular therapies has demonstrated a partial efficacy in protecting the organs following reperfusion, while randomized clinical trials focused on more specific drug targets have failed. In order to overcome this problem, we applied a combination of molecular modeling and chemical synthesis to identify novel spiropiperidine-based structures active in mitochondrial permeability transition pore opening inhibition as a key process to enhance cell survival after blood flow restoration. Our results were confirmed by biological assay on an in vitro cell model on HeLa and human renal proximal tubular epithelial cells and pave the way to further investigation on an in vivo model system.
Collapse
Affiliation(s)
- Giulia Turrin
- Department
of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari,46, 44121 Ferrara, Italy
| | - Ettore Lo Cascio
- Dipartimento
di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
| | - Noah Giacon
- Dipartimento
di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
| | - Anna Fantinati
- Department
of Environmental and Prevention Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy
| | - Virginia Cristofori
- Department
of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari,46, 44121 Ferrara, Italy
| | - Davide Illuminati
- Department
of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari,46, 44121 Ferrara, Italy
| | - Delia Preti
- Department
of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari,46, 44121 Ferrara, Italy
| | - Giampaolo Morciano
- Department
of Medical Sciences, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy
- Laboratory
for Technologies of Advanced Therapies (LTTA), Via Fossato di Mortara,70, 44121 Ferrara, Italy
| | - Paolo Pinton
- Department
of Medical Sciences, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy
- Laboratory
for Technologies of Advanced Therapies (LTTA), Via Fossato di Mortara,70, 44121 Ferrara, Italy
| | - Esther Densu Agyapong
- Department
of Medical Sciences, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Claudio Trapella
- Department
of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari,46, 44121 Ferrara, Italy
- Laboratory
for Technologies of Advanced Therapies (LTTA), Via Fossato di Mortara,70, 44121 Ferrara, Italy
| | - Alessandro Arcovito
- Dipartimento
di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
- Fondazione
Policlinico Universitario “A. Gemelli”, IRCCS, Largo A. Gemelli 8, 00168 Roma, Italy
| |
Collapse
|
2
|
Zhang X, Xie F, Ma S, Ma C, Jiang X, Yi Y, Song Y, Liu M, Zhao P, Ma X. Mitochondria: one of the vital hubs for molecular hydrogen's biological functions. Front Cell Dev Biol 2023; 11:1283820. [PMID: 38020926 PMCID: PMC10662307 DOI: 10.3389/fcell.2023.1283820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
As a novel antioxidant, a growing body of studies has documented the diverse biological effects of molecular hydrogen (H2) in a wide range of organisms, spanning animals, plants, and microorganisms. Although several possible mechanisms have been proposed, they cannot fully explain the extensive biological effects of H2. Mitochondria, known for ATP production, also play crucial roles in diverse cellular functions, including Ca2+ signaling, regulation of reactive oxygen species (ROS) generation, apoptosis, proliferation, and lipid transport, while their dysfunction is implicated in a broad spectrum of diseases, including cardiovascular disorders, neurodegenerative conditions, metabolic disorders, and cancer. This review aims to 1) summarize the experimental evidence on the impact of H2 on mitochondrial function; 2) provide an overview of the mitochondrial pathways underlying the biological effects of H2, and 3) discuss H2 metabolism in eukaryotic organisms and its relationship with mitochondria. Moreover, based on previous findings, this review proposes that H2 may regulate mitochondrial quality control through diverse pathways in response to varying degrees of mitochondrial damage. By combining the existing research evidence with an evolutionary perspective, this review emphasizes the potential hydrogenase activity in mitochondria of higher plants and animals. Finally, this review also addresses potential issues in the current mechanistic study and offers insights into future research directions, aiming to provide a reference for future studies on the mechanisms underlying the action of H2.
Collapse
Affiliation(s)
- Xiaoyue Zhang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Fei Xie
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Shiwen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Chen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Xue Jiang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Yang Yi
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Yifei Song
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Mengyu Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Xuemei Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| |
Collapse
|
3
|
Zhao H, Lin X, Chen Q, Wang X, Wu Y, Zhao X. Quercetin inhibits the NOX2/ROS-mediated NF-κB/TXNIP signaling pathway to ameliorate pyroptosis of cardiomyocytes to relieve sepsis-induced cardiomyopathy. Toxicol Appl Pharmacol 2023; 477:116672. [PMID: 37648089 DOI: 10.1016/j.taap.2023.116672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/18/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
Sepsis-induced cardiomyopathy (SIC) has high morbidity and mortality. Quercetin (QUE) has been used to treat many inflammatory diseases related to pyroptosis. However, its effect on SIC has not been reported before. We aimed to explore the therapeutic mechanism of QUE on SIC. We found that the expression levels of NOX2, markers of myocardial injury and inflammatory factors related to pyroptosis were upregulated in the serum of SIC patients. QUE improved the viability and reduced the death rate of LPS-treated H9C2 cells. It could downregulate the expression level of NOX2 and alleviate NOX2-induced mitochondrial damage to inhibit the ROS-mediated NF-κB/TXNIP pathway thus ameliorating cell pyroptosis. Overexpression of NOX2 partially attenuated the anti-pyroptotic effects of QUE on LPS-treated H9C2 cells in vitro. Besides, the results of animal experiments reported that the mitochondrial damage was reduced by QUE treatment, which subsequently inhibited the ROS-mediated NF-κB/TXNIP pathway to ameliorate cell pyroptosis to further alleviate myocardial injury in CLP-induced rats in vivo. To conclude, QUE suppressed the NOX2/ROS-mediated NF-κB/TXNIP signaling pathway to ameliorate pyroptosis of cardiomyocytes to relieve SIC.
Collapse
Affiliation(s)
- Hao Zhao
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China
| | - Xin Lin
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China
| | - Qingfeng Chen
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China
| | - Xiaoyue Wang
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China
| | - Yongya Wu
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China
| | - Xiaoxia Zhao
- Department of Emergency and Critical Care Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 42, Wenhuaxi Road, Lixia District, Jinan City, Shandong Province 250014, China.
| |
Collapse
|
4
|
Mordel P, Fontaine F, Dupas Q, Joubert M, Allouche S. Glucose fluctuation promotes mitochondrial dysfunctions in the cardiomyocyte cell line HL-1. PLoS One 2023; 18:e0289475. [PMID: 37733770 PMCID: PMC10513336 DOI: 10.1371/journal.pone.0289475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 07/19/2023] [Indexed: 09/23/2023] Open
Abstract
AIMS Glycemic variability has been suggested as a risk factor for diabetes complications but the precise deleterious mechanisms remain poorly understood. Since mitochondria are the main source of energy in heart and cardiovascular diseases remain the first cause of death in patients with diabetes, the aim of the study was to evaluate the impact of glucose swings on mitochondrial functions in the cardiomyocyte cell line HL-1. METHODS HL-1 cells were exposed to low (LG, 2.8 mmol/l), normal (NG, 5.5 mmol/l), high (HG, 25 mmol/l) or intermittent high glucose (IHG, swing between low and high) every 2h during 12h (short-time treatment) or every 12h during 72h (long-time treatment). Anaerobic catabolism of glucose was evaluated by measuring glucose consumption and lactate production, oxidative phosphorylation was evaluated by polarography and ATP measurement, mitochondrial superoxide anions and the mitochondrial membrane potential (MMP) were analysed using fluorescent probes, and the protein oxidation was measured by oxyblot. RESULTS IHG and HG increased glucose consumption and lactate production compared to LG and NG but without any difference between short- and long-time treatments. After 72h and unlike to LG, NG and HG, we didn't observe any increase of the mitochondrial respiration in the presence of succinate upon IHG treatment. IHG, and to a lesser extent HG, promoted a time-dependent decrease of the mitochondrial membrane potential compared to LG and NG treatments. HG and IHG also increased superoxide anion production compared to LG and NG both at 12 and 72h but with a higher increase for IHG at 72h. At last, both HG and IHG stimulated protein oxidation at 72h compared to LG and NG treatments. CONCLUSIONS Our results demonstrated that exposure of HL-1 cells to glucose swings promoted time-dependent mitochondrial dysfunctions suggesting a deleterious effect of such condition in patients with diabetes that could contribute to diabetic cardiomyopathy.
Collapse
Affiliation(s)
- Patrick Mordel
- Normandie University, UNICAEN, CHU Caen, Signalisation, Electrophysiologie et Imagerie des Lésions d’Ischémie-Reperfusion Myocardique, Caen, France
| | | | - Quentin Dupas
- Normandie University, UNICAEN, CHU Caen, Signalisation, Electrophysiologie et Imagerie des Lésions d’Ischémie-Reperfusion Myocardique, Caen, France
| | - Michael Joubert
- Normandie University, UNICAEN, CHU Caen, Signalisation, Electrophysiologie et Imagerie des Lésions d’Ischémie-Reperfusion Myocardique, Caen, France
- CHU de Caen, Diabetes Care Unit, Caen, France
| | - Stéphane Allouche
- Normandie University, UNICAEN, CHU Caen, Signalisation, Electrophysiologie et Imagerie des Lésions d’Ischémie-Reperfusion Myocardique, Caen, France
- Department of Biochemistry, CHU de Caen, Caen, France
| |
Collapse
|
5
|
Costa-Laparra I, Juárez-Escoto E, Vicario C, Moratalla R, García-Sanz P. APOE ε4 allele, along with G206D- PSEN1 mutation, alters mitochondrial networks and their degradation in Alzheimer's disease. Front Aging Neurosci 2023; 15:1087072. [PMID: 37455931 PMCID: PMC10340123 DOI: 10.3389/fnagi.2023.1087072] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 06/13/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction Alzheimer's disease remains the most common neurodegenerative disorder, depicted mainly by memory loss and the presence in the brain of senile plaques and neurofibrillary tangles. This disease is related to several cellular alterations like the loss of synapses, neuronal death, disruption of lipid homeostasis, mitochondrial fragmentation, or raised oxidative stress. Notably, changes in the autophagic pathway have turned out to be a key factor in the early development of the disease. The aim of this research is to determine the impact of the APOE allele ε4 and G206D-PSEN1 on the underlying mechanisms of Alzheimer's disease. Methods Fibroblasts from Alzheimer's patients with APOE 3/4 + G206D-PSEN1 mutation and homozygous APOE ε4 were used to study the effects of APOE polymorphism and PSEN1 mutation on the autophagy pathway, mitochondrial network fragmentation, superoxide anion levels, lysosome clustering, and p62/SQSTM1 levels. Results We observed that the APOE allele ε4 in homozygosis induces mitochondrial network fragmentation that correlates with an increased colocalization with p62/SQSTM1, probably due to an inefficient autophagy. Moreover, G206D-PSEN1 mutation causes an impairment of the integrity of mitochondrial networks, triggering high superoxide anion levels and thus making APOE 3/4 + PSEN1 fibroblasts more vulnerable to cell death induced by oxidative stress. Of note, PSEN1 mutation induces accumulation and clustering of lysosomes that, along with an increase of global p62/SQSTM1, could compromise lysosomal function and, ultimately, its degradation. Conclusion The findings suggest that all these modifications could eventually contribute to the neuronal degeneration that underlies the pathogenesis of Alzheimer's disease. Further research in this area may help to develop targeted therapies for the treatment of Alzheimer's disease.
Collapse
Affiliation(s)
- Irene Costa-Laparra
- Neurobiology of the Basal Ganglia Laboratory, Department of Functional Systems and Neurobiology, Instituto Cajal, Spanish National Research Council (CSIC), Madrid, Spain
| | - Elena Juárez-Escoto
- Neurobiology of the Basal Ganglia Laboratory, Department of Functional Systems and Neurobiology, Instituto Cajal, Spanish National Research Council (CSIC), Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - Carlos Vicario
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
- Stem Cells, Neurogenesis and Neurodegeneration Laboratory, Department of Molecular, Cellular and Developmental Neurobiology, Cajal Institute, Spanish National Research Council (CSIC), Madrid, Spain
| | - Rosario Moratalla
- Neurobiology of the Basal Ganglia Laboratory, Department of Functional Systems and Neurobiology, Instituto Cajal, Spanish National Research Council (CSIC), Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia García-Sanz
- Neurobiology of the Basal Ganglia Laboratory, Department of Functional Systems and Neurobiology, Instituto Cajal, Spanish National Research Council (CSIC), Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| |
Collapse
|
6
|
Malinowska K, Sicińska P, Michałowicz J, Bukowska B. The effects of non-functionalized polystyrene nanoparticles of different diameters on the induction of apoptosis and mTOR level in human peripheral blood mononuclear cells. CHEMOSPHERE 2023; 335:139137. [PMID: 37285979 DOI: 10.1016/j.chemosphere.2023.139137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/31/2023] [Accepted: 06/03/2023] [Indexed: 06/09/2023]
Abstract
Particles of various types of plastics, including polystyrene nanoparticles (PS-NPs), have been determined in human blood, placenta, and lungs. These findings suggest a potential detrimental effect of PS-NPs on bloodstream cells. The purpose of this study was to assess the mechanism underlying PS-NPs-induced apoptosis in human peripheral blood mononuclear cells (PBMCs). Non-functionalized PS-NPs of three diameters: 29 nm, 44 nm, and 72 nm were studied used in this research. PBMCs were isolated from human leukocyte-platelet buffy coat and treated with PS-NPs at concentrations ranging from 0.001 to 200 μg/mL for 24 h. Apoptotic mechanism of action was evaluated by determining the level of cytosolic calcium ions, as well as mitochondrial transmembrane potential, and ATP levels. Furthermore, detection of caspase-8, -9, and -3 activation, as well as mTOR level was conducted. The presence of apoptotic PBMCs was confirmed by the method of double staining of the cells with propidium iodide and FITC-conjugated Annexin V. We found that all tested NPs increased calcium ion and depleted mitochondrial transmembrane potential levels. The tested NPs also activated caspase-9 and caspase-3, and the smallest NPs of 29 nm of diameter also activated caspase-8. The results clearly showed that apoptotic changes and an increase of mTOR level depended on the size of the tested NPs, while the smallest particles caused the greatest alterations. PS-NPs of 26 nm of diameter activated the extrinsic pathway (increased caspase-8 activity), as well as intrinsic (mitochondrial) pathway (increased caspase-9 activity, raised calcium ion level, and decreased transmembrane mitochondrial potential) of apoptosis. All PS-NPs increased mTOR level at the concentrations smaller than those that induced apoptosis and its level returned to control value when the process of apoptosis escalated.
Collapse
Affiliation(s)
- Kinga Malinowska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Paulina Sicińska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Jaromir Michałowicz
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Bożena Bukowska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland.
| |
Collapse
|
7
|
Bukowski K, Marciniak B, Kciuk M, Mujwar S, Mojzych M, Kontek R. Pyrazolo[4,3- e]tetrazolo[1,5- b][1,2,4]triazine Sulfonamides as Novel Potential Anticancer Agents: Apoptosis, Oxidative Stress, and Cell Cycle Analysis. Int J Mol Sci 2023; 24:ijms24108504. [PMID: 37239848 DOI: 10.3390/ijms24108504] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/03/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The current study continues the evaluation of the anticancer potential of three de novo synthesized pyrazolo[4,3-e]tetrazolo[1,5-b][1,2,4]triazine sulfonamides-MM129, MM130, and MM131-against human cancer cells of HeLa, HCT 116, PC-3, and BxPC-3 lines. The pro-apoptotic activity of the investigated sulfonamides was shown by observations of changes in the mitochondrial transmembrane potential of the tested cells, externalization of phosphatidylserine on the cellular membrane surface, and cell morphology in microscopic imaging. The computational studies have shown that MM129 exhibited the lowest binding energy values when docked against CDK enzymes. In addition, the highest stability was shown for complexes formed between MM129 and CDK5/8 enzymes. All examined compounds induced cell cycle arrest in the G0/G1 phase in the BxPC-3 and PC-3 cells and simultaneously caused the accumulation of cells in the S phase in the HCT 116 cells. In addition, the increase in the subG1 fraction was observed in PC-3 and HeLa cells. The application of a fluorescent H2DCFDA probe revealed the high pro-oxidative properties of the tested triazine derivatives, especially MM131. In conclusion, the obtained results suggest that MM129, MM130, and MM131 exhibited strong pro-apoptotic properties towards investigated cells, mainly against the HeLa and HCT 116 cell lines, and high pro-oxidative potential as well. Moreover, it is suggested that the anticancer activity of the tested compounds may be associated with their ability to inhibit CDK enzymes activities.
Collapse
Affiliation(s)
- Karol Bukowski
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
| | - Beata Marciniak
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
| | - Mateusz Kciuk
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, 90-237 Lodz, Poland
| | - Somdutt Mujwar
- Chitkara College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
| | - Mariusz Mojzych
- Department of Chemistry, Siedlce University of Natural Sciences and Humanities, 08-110 Siedlce, Poland
| | - Renata Kontek
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
| |
Collapse
|
8
|
Zemniaçak ÂB, Roginski AC, Ribeiro RT, Bender JG, Marschner RA, Wajner SM, Wajner M, Amaral AU. Disruption of mitochondrial bioenergetics and calcium homeostasis by phytanic acid in the heart: Potential relevance for the cardiomyopathy in Refsum disease. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2023; 1864:148961. [PMID: 36812958 DOI: 10.1016/j.bbabio.2023.148961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/23/2022] [Accepted: 02/13/2023] [Indexed: 02/22/2023]
Abstract
Refsum disease is an inherited peroxisomal disorder caused by severe deficiency of phytanoyl-CoA hydroxylase activity. Affected patients develop severe cardiomyopathy of poorly known pathogenesis that may lead to a fatal outcome. Since phytanic acid (Phyt) concentrations are highly increased in tissues of individuals with this disease, it is conceivable that this branched-chain fatty acid is cardiotoxic. The present study investigated whether Phyt (10-30 μM) could disturb important mitochondrial functions in rat heart mitochondria. We also determined the influence of Phyt (50-100 μM) on cell viability (MTT reduction) in cardiac cells (H9C2). Phyt markedly increased mitochondrial state 4 (resting) and decreased state 3 (ADP-stimulated) and uncoupled (CCCP-stimulated) respirations, besides reducing the respiratory control ratio, ATP synthesis and the activities of the respiratory chain complexes I-III, II, and II-III. This fatty acid also reduced mitochondrial membrane potential and induced swelling in mitochondria supplemented by exogenous Ca2+, which were prevented by cyclosporin A alone or combined with ADP, suggesting the involvement of the mitochondrial permeability transition (MPT) pore opening. Mitochondrial NAD(P)H content and Ca2+ retention capacity were also decreased by Phyt in the presence of Ca2+. Finally, Phyt significantly reduced cellular viability (MTT reduction) in cultured cardiomyocytes. The present data indicate that Phyt, at concentrations found in the plasma of patients with Refsum disease, disrupts by multiple mechanisms mitochondrial bioenergetics and Ca2+ homeostasis, which could presumably be involved in the cardiomyopathy of this disease.
Collapse
Affiliation(s)
- Ângela Beatriz Zemniaçak
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana Cristina Roginski
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, USA
| | - Rafael Teixeira Ribeiro
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Julia Gabrieli Bender
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rafael Aguiar Marschner
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Simone Magagnin Wajner
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Alexandre Umpierrez Amaral
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Biológicas, Universidade Regional Integrada do Alto Uruguai e das Missões, Erechim, RS, Brazil.
| |
Collapse
|
9
|
Carraro M, Bernardi P. The mitochondrial permeability transition pore in Ca 2+ homeostasis. Cell Calcium 2023; 111:102719. [PMID: 36963206 DOI: 10.1016/j.ceca.2023.102719] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 03/26/2023]
Abstract
The mitochondrial Permeability Transition Pore (PTP) can be defined as a Ca2+ activated mega-channel involved in mitochondrial damage and cell death, making its inhibition a hallmark for therapeutic purposes in many PTP-related paradigms. Although long-lasting PTP openings have been widely studied, the physiological implications of transient openings (also called "flickering" behavior) are still poorly understood. The flickering activity was suggested to play a role in the regulation of Ca2+ and ROS homeostasis, and yet this hypothesis did not reach general consensus. This state of affairs might arise from the lack of unquestionable experimental evidence, due to limitations of the available techniques for capturing transient PTP activity and to a still partial understanding of its molecular identity. In this review we will focus on possible implications of the PTP in physiology, in particular its role as a Ca2+ release pathway, discussing the consequences of its forced inhibition. We will also consider the recent hypothesis of the existence of more permeability pathways and their potential involvement in mitochondrial physiology.
Collapse
Affiliation(s)
- Michela Carraro
- Department of Biomedical Sciences, University of Padova and CNR Neuroscience Institute, Via Ugo Bassi 58/B, I-35131 Padova, Italy.
| | - Paolo Bernardi
- Department of Biomedical Sciences, University of Padova and CNR Neuroscience Institute, Via Ugo Bassi 58/B, I-35131 Padova, Italy
| |
Collapse
|
10
|
Gareev I, Beylerli O, Liang Y, Lu E, Ilyasova T, Sufianov A, Sufianova G, Shi H, Ahmad A, Yang G. The Role of Mitochondria-Targeting miRNAs in Intracerebral Hemorrhage. Curr Neuropharmacol 2023; 21:1065-1080. [PMID: 35524670 PMCID: PMC10286585 DOI: 10.2174/1570159x20666220507021445] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/02/2022] [Accepted: 04/24/2022] [Indexed: 11/22/2022] Open
Abstract
Non-traumatic intracerebral hemorrhage (ICH) is the most common type of hemorrhagic stroke, most often occurring between the ages of 45 and 60. Arterial hypertension (AH) is most often the cause of ICH, followed by atherosclerosis, blood diseases, inflammatory changes in cerebral vessels, intoxication and vitamin deficiencies. Cerebral hemorrhage can occur by diapedesis or as a result of a ruptured vessel. AH is difficult to treat, requires surgery and can lead to disability or death. One of the important directions in the study of the pathogenesis of ICH is mitochondrial dysfunction and its regulation. The key role of mitochondrial dysfunction in AH and atherosclerosis, as well as in the development of brain damage after hemorrhage, has been acknowledged. MicroRNAs (miRNAs) are a class of non-coding RNAs (about 18-22 nucleotides) that regulate a variety of biological processes including cell differentiation, proliferation, apoptosis, etc., primarily through gene repression. There is growing evidence to support dysregulated miRNAs in various cardiovascular diseases, including ICH. Further, the realization of miRNAs within mitochondrial compartment has challenged the traditional knowledge of signaling pathways involved in the regulatory network of cardiovascular diseases. However, the role of miRNAs in mitochondrial dysfunction for ICH is still under-appreciated, with comparatively much lesser studies and investigations reported, than those in other cardiovascular diseases. In this review, we summarize the up-to-date findings on the published role miRNAs in mitochondrial function for ICH, and the potential use of miRNAs in clinical settings, such as potential therapeutic targets and non-invasive diagnostic/prognostic biomarker tools.
Collapse
Affiliation(s)
- Ilgiz Gareev
- Federal Centre of Neurosurgery, Tyumen, Russia
- Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Ozal Beylerli
- Federal Centre of Neurosurgery, Tyumen, Russia
- Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Yanchao Liang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
- Institute of Brain Science, Harbin Medical University, Harbin, 150001, China
| | - Enzhou Lu
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
- Institute of Brain Science, Harbin Medical University, Harbin, 150001, China
| | - Tatiana Ilyasova
- Bashkir State Medical University, Ufa, Republic of Bashkortostan, 450008, Russia
| | - Albert Sufianov
- Federal Centre of Neurosurgery, Tyumen, Russia
- Department of Neurosurgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Galina Sufianova
- Department of Pharmacology, Tyumen State Medical University, Tyumen, Russia
| | - Huaizhang Shi
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
- Institute of Brain Science, Harbin Medical University, Harbin, 150001, China
| | - Aamir Ahmad
- Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Guang Yang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
- Institute of Brain Science, Harbin Medical University, Harbin, 150001, China
| |
Collapse
|
11
|
Pedriali G, Ramaccini D, Bouhamida E, Wieckowski MR, Giorgi C, Tremoli E, Pinton P. Perspectives on mitochondrial relevance in cardiac ischemia/reperfusion injury. Front Cell Dev Biol 2022; 10:1082095. [PMID: 36561366 PMCID: PMC9763599 DOI: 10.3389/fcell.2022.1082095] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular disease is the most common cause of death worldwide and in particular, ischemic heart disease holds the most considerable position. Even if it has been deeply studied, myocardial ischemia-reperfusion injury (IRI) is still a side-effect of the clinical treatment for several heart diseases: ischemia process itself leads to temporary damage to heart tissue and obviously the recovery of blood flow is promptly required even if it worsens the ischemic injury. There is no doubt that mitochondria play a key role in pathogenesis of IRI: dysfunctions of these important organelles alter cell homeostasis and survival. It has been demonstrated that during IRI the system of mitochondrial quality control undergoes alterations with the disruption of the complex balance between the processes of mitochondrial fusion, fission, biogenesis and mitophagy. The fundamental role of mitochondria is carried out thanks to the finely regulated connection to other organelles such as plasma membrane, endoplasmic reticulum and nucleus, therefore impairments of these inter-organelle communications exacerbate IRI. This review pointed to enhance the importance of the mitochondrial network in the pathogenesis of IRI with the aim to focus on potential mitochondria-targeting therapies as new approach to control heart tissue damage after ischemia and reperfusion process.
Collapse
Affiliation(s)
- Gaia Pedriali
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, Italy
| | | | - Esmaa Bouhamida
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, Italy
| | - Mariusz R. Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Carlotta Giorgi
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Science, Section of Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Elena Tremoli
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, Italy,*Correspondence: Paolo Pinton, ; Elena Tremoli,
| | - Paolo Pinton
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, Italy,Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Science, Section of Experimental Medicine, University of Ferrara, Ferrara, Italy,*Correspondence: Paolo Pinton, ; Elena Tremoli,
| |
Collapse
|
12
|
Khongthaw B, Dulta K, Chauhan PK, Kumar V, Ighalo JO. Lycopene: a therapeutic strategy against coronavirus disease 19 (COVID- 19). Inflammopharmacology 2022; 30:1955-1976. [PMID: 36050507 PMCID: PMC9436159 DOI: 10.1007/s10787-022-01061-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/18/2022] [Indexed: 02/07/2023]
Abstract
Lycopene is a group of phytochemicals found in nature, primarily in fruits and vegetables. Lycopene is thought to protect against a variety of diseases attributed to its antioxidant capabilities. Lycopene has anti-inflammatory, anti-cancer, and immunity-boosting qualities, among other biological and pharmacological benefits. COVID-19 (coronavirus disease 19) is an infectious disease caused by the SARS-CoV-2 virus, which has recently emerged as one of the world's leading causes of death. Patients may be asymptomatic or show signs of respiratory, cytokine release syndrome, gastrointestinal, or even multiple organ failure, all of which can lead to death. In COVID-19, inflammation, and cytokine storm are the key pathogenic mechanisms, according to SARS-CoV-2 infection symptoms. ARDS develops in some vulnerable hosts, which is accompanied by an inflammatory "cytokine syndrome" that causes lung damage. Immunological and inflammatory markers were linked to disease severity in mild and severe COVID-19 cases, implying that inflammatory markers, including IL-6, CRP, ESR, and PCT were significantly linked with COVID-19 severity. Patients with severe illness have reduced levels of several immune subsets, including CD4 + T, NK, and CD8 + cells. As a result, lycopene can be commended for bolstering physiological defenses against COVID-19 infections.
Collapse
Affiliation(s)
- Banlambhabok Khongthaw
- Shoolini University of Biotechnology and Management Sciences, Bajhol, Solan, Himachal Pradesh, 173229, India
| | - Kanika Dulta
- Shoolini University of Biotechnology and Management Sciences, Bajhol, Solan, Himachal Pradesh, 173229, India
| | - Pankaj Kumar Chauhan
- Shoolini University of Biotechnology and Management Sciences, Bajhol, Solan, Himachal Pradesh, 173229, India.
| | - Vinod Kumar
- Department of Life Sciences, Graphic Era (Deemed to be University), Dehradun, Uttarakhand, 248002, India
| | - Joshua O Ighalo
- Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria.
- Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA.
| |
Collapse
|
13
|
Senneff S, Lowery MM. Computational Model of the Effect of Mitochondrial Dysfunction on Excitation–Contraction Coupling in Skeletal Muscle. Bull Math Biol 2022; 84:123. [PMID: 36114931 PMCID: PMC9482608 DOI: 10.1007/s11538-022-01079-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
Abstract
It has become well established that mitochondria not only regulate myoplasmic calcium in skeletal muscle, but also use that calcium to stimulate oxidative phosphorylation (OXPHOS). While experimental approaches have allowed for imaging of mitochondrial calcium and membrane potentials in isolated fibers, capturing the role of mitochondria and the impact of mitochondrial impairments on excitation–contraction coupling (ECC) remains difficult to explore in intact muscle. Computational models have been widely used to examine the structure and function of skeletal muscle contraction; however, models of ECC to date lack communication between the myoplasm and mitochondria for regulating calcium and ATP during sustained contractions. To address this, a mathematical model of mitochondrial calcium handling and OXPHOS was integrated into a physiological model of ECC incorporating action potential propagation, calcium handling between the sarcoplasmic reticulum (SR) and the myoplasm, and crossbridge cycling. The model was used to examine the protective role of mitochondria during repeated stimulation and the impact of mitochondrial dysfunction on ECC resulting from progressive OXPHOS inhibition. Pathological myoplasmic calcium accumulation occurred through distinct mechanisms in the model in the case of either electron transport chain, F1F0 ATP synthase, or adenine nucleotide transporter impairments. To investigate the effect of each impairment on force, a model of calcium-stimulated apoptosis was utilized to capture dysfunction-induced reductions in muscle mass, driving whole muscle force loss. The model presented in this study can be used to examine the role of mitochondria in the regulation of calcium, ATP, and force generation during voluntary contraction.
Collapse
Affiliation(s)
- Sageanne Senneff
- School of Electrical and Electronic Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Madeleine M. Lowery
- School of Electrical and Electronic Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
14
|
Yin Y, Shen H. Common methods in mitochondrial research (Review). Int J Mol Med 2022; 50:126. [PMID: 36004457 PMCID: PMC9448300 DOI: 10.3892/ijmm.2022.5182] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/09/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Yiyuan Yin
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Haitao Shen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| |
Collapse
|
15
|
Li Y, Gao X, Huang H, Zhou X, Zang Y, Chou LW. Effects of Fu's Subcutaneous Needling on Mitochondrial Structure and Function in Rats with Sciatica. Mol Pain 2022; 18:17448069221108717. [PMID: 35670088 PMCID: PMC9210095 DOI: 10.1177/17448069221108717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
To observe the effects of Fu’s subcutaneous needling (FSN) and acupuncture treatment on the mitochondrial structure and function of the skeletal muscle tissue of rats with sciatica. Forty Sprague–Dawley rats were divided into control, model, acupuncture, and FSN groups (10 each) according to a random number table. The control group was left untreated. Rats in the FSN group were treated with FSN once every 2 days for three times, respectively (days 1, 3, 5, and 7), to cooperate with reperfusion approach. The acupuncture group was treated at the same timeline as that of the FSN group. Changes in the mechanical pain threshold, mitochondrial ultrastructure, mitochondrial citrate synthase (CS) activities, mitochondrial respiratory chain complex II, and mitochondrial COX- I protein expression in the skeletal muscle of rats treated with different treatments were compared with those of the model group. The pain thresholds of the rats were remarkably higher after FSN treatment and acupuncture, and the pain threshold of the FSN group was higher than that of the acupuncture group. Compared with the control group, the mitochondria of the model group had a damaged ultrastructure, were arranged in a disorganized manner, accumulated under the basement membrane, and appeared vacuolated with autophagosomes. The state of mitochondria in the FSN group was close to that in the control group and was remarkably better than that in the acupuncture group. The activities of mitochondrial CS and respiratory chain complex II in the skeletal muscle of the treated rats decreased compared with the control group (p < 0.05), and their levels were better in the FSN group than in the acupuncture group (p < 0.05). FSN treatment for 1 week considerably improved the pain thresholds and improved the skeletal muscle mitochondrial ultrastructure and mitochondrial function in rats with sciatica.
Collapse
Affiliation(s)
| | | | - Hailiang Huang
- 74738Shandong University of Traditional Chinese Medicine
| | - Xiyan Zhou
- 155177Qingdao Hospital of Traditional Chinese Medicine
| | - Yunhua Zang
- 155177Qingdao Hospital of Traditional Chinese Medicine
| | - Li-Wei Chou
- Department of Physical Medicine and Rehabilitation38020China Medical University Hospital
| |
Collapse
|
16
|
Chapa-Dubocq XR, Garcia-Baez JF, Bazil JN, Javadov S. Crosstalk between adenine nucleotide transporter and mitochondrial swelling: experimental and computational approaches. Cell Biol Toxicol 2022:10.1007/s10565-022-09724-2. [PMID: 35606662 DOI: 10.1007/s10565-022-09724-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/10/2022] [Indexed: 11/30/2022]
Abstract
Mitochondrial metabolism and function are modulated by changes in matrix Ca2+. Small increases in the matrix Ca2+ stimulate mitochondrial bioenergetics, whereas excessive Ca2+ leads to cell death by causing massive matrix swelling and impairing the structural and functional integrity of mitochondria. Sustained opening of the non-selective mitochondrial permeability transition pores (PTP) is the main mechanism responsible for mitochondrial Ca2+ overload that leads to mitochondrial dysfunction and cell death. Recent studies suggest the existence of two or more types of PTP, and adenine nucleotide translocator (ANT) and FOF1-ATP synthase were proposed to form the PTP independent of each other. Here, we elucidated the role of ANT in PTP opening by applying both experimental and computational approaches. We first developed and corroborated a detailed model of the ANT transport mechanism including the matrix (ANTM), cytosolic (ANTC), and pore (ANTP) states of the transporter. Then, the ANT model was incorporated into a simple, yet effective, empirical model of mitochondrial bioenergetics to ascertain the point when Ca2+ overload initiates PTP opening via an ANT switch-like mechanism activated by matrix Ca2+ and is inhibited by extra-mitochondrial ADP. We found that encoding a heterogeneous Ca2+ response of at least three types of PTPs, weakly, moderately, and strongly sensitive to Ca2+, enabled the model to simulate Ca2+ release dynamics observed after large boluses were administered to a population of energized cardiac mitochondria. Thus, this study demonstrates the potential role of ANT in PTP gating and proposes a novel mechanism governing the cryptic nature of the PTP phenomenon.
Collapse
Affiliation(s)
- Xavier R Chapa-Dubocq
- Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR, 00936-5067, USA
| | - Jorge F Garcia-Baez
- Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR, 00936-5067, USA
| | - Jason N Bazil
- Department of Physiology, Michigan State University, East Lansing, MI, 48824-1046, USA
| | - Sabzali Javadov
- Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR, 00936-5067, USA.
| |
Collapse
|
17
|
Wu DL, Wang TS, Liu HJ, Zhang W, Tong XH, Peng DY, Kong LY. Study on the mechanism of Wuzi-Yanzong-Wan-medicated serum interfering with the mitochondrial permeability transition pore in the GC-2 cell induced by atractyloside. Chin J Nat Med 2022; 20:282-289. [PMID: 35487598 DOI: 10.1016/s1875-5364(22)60153-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Indexed: 12/30/2022]
Abstract
Wuzi-Yanzong-Wan (WZYZW) is a classic prescription for male infertility. Our previous investigation has demonstrated that it can inhibit sperm apoptosis via affecting mitochondria, but the underlying mechanisms are unclear. The purpose of the present study was to explore the actions of WZYZW on mitochondrial permeability transition pore (mPTP) in mouse spermatocyte cell line (GC-2 cells) opened by atractyloside (ATR). At first, WZYZW-medicated serum was prepared from rats following oral administration of WZYZW for 7 days. GC-2 cells were divided into control group, model group, positive group, as well as 5%, 10%, 15% WZYZW-medicated serum group. Cyclosporine A (CsA) was used as a positive control. 50 μmol·L-1 ATR was added after drugs incubation. Cell viability was assessed using CCK-8. Apoptosis was detected using flow cytometry and TUNEL method. The opening of mPTP and mitochondrial membrane potential (MMP) were detected by Calcein AM and JC-1 fluorescent probe respectively. The mRNA and protein levels of voltage-dependent anion channel 1 (VDAC1), cyclophilin D (CypD), adenine nucleotide translocator (ANT), cytochrome C (Cyt C), caspase 3, 9 were detected by RT-PCR (real time quantity PCR) and Western blotting respectively. The results demonstrated that mPTP of GC-2 cells was opened after 24 hours of ATR treatment, resulting in decreased MMP and increased apoptosis. Pre-protection with WZYZ-medicated serum and CsA inhibited the opening of mPTP of GC-2 cells induced by ATR associated with increased MMP and decreased apoptosis. Moreover, the results of RT-qPCR and WB suggested that WZYZW-medicated serum could significantly reduce the mRNA and protein levels of VDAC1 and CypD, Caspase-3, 9 and CytC, as well as a increased ratio of Bcl/Bax. However, ANT was not significantly affected. Therefore, these findings indicated that WZYZW inhibited mitochondrial mediated apoptosis by attenuating the opening of mPTP in GC-2 cells. WZYZW-medicated serum inhibited the expressions of VDAC1 and CypD and increased the expression of Bcl-2, which affected the opening of mPTP and exerted protective and anti-apoptotic effects on GC-2 cell induced by ATR.
Collapse
Affiliation(s)
- De-Ling Wu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China; School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China; School of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Tong-Sheng Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China
| | - Hong-Juan Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China
| | - Wei Zhang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China
| | - Xiao-Hui Tong
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China
| | - Dai-Yin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Hefei 230012, China.
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| |
Collapse
|
18
|
Melatonin-Induced Postconditioning Suppresses NMDA Receptor through Opening of the Mitochondrial Permeability Transition Pore via Melatonin Receptor in Mouse Neurons. Int J Mol Sci 2022; 23:ijms23073822. [PMID: 35409182 PMCID: PMC8998233 DOI: 10.3390/ijms23073822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/02/2022] [Accepted: 03/28/2022] [Indexed: 12/29/2022] Open
Abstract
Mitochondrial membrane potential regulation through the mitochondrial permeability transition pore (mPTP) is reportedly involved in the ischemic postconditioning (PostC) phenomenon. Melatonin is an endogenous hormone that regulates circadian rhythms. Its neuroprotective effects via mitochondrial melatonin receptors (MTs) have recently attracted attention. However, details of the neuroprotective mechanisms associated with PostC have not been clarified. Using hippocampal CA1 pyramidal cells from C57BL mice, we studied the involvement of MTs and the mPTP in melatonin-induced PostC mechanisms similar to those of ischemic PostC. We measured changes in spontaneous excitatory postsynaptic currents (sEPSCs), intracellular calcium concentration, mitochondrial membrane potential, and N-methyl-D-aspartate receptor (NMDAR) currents after ischemic challenge, using the whole-cell patch-clamp technique. Melatonin significantly suppressed increases in sEPSCs and intracellular calcium concentrations. The NMDAR currents were significantly suppressed by melatonin and the MT agonist, ramelteon. However, this suppressive effect was abolished by the mPTP inhibitor, cyclosporine A, and the MT antagonist, luzindole. Furthermore, both melatonin and ramelteon potentiated depolarization of mitochondrial membrane potentials, and luzindole suppressed depolarization of mitochondrial membrane potentials. This study suggests that melatonin-induced PostC via MTs suppressed the NMDAR that was induced by partial depolarization of mitochondrial membrane potential by opening the mPTP, reducing excessive release of glutamate and inducing neuroprotection against ischemia-reperfusion injury.
Collapse
|
19
|
Pereira AC, De Pascale J, Resende R, Cardoso S, Ferreira I, Neves BM, Carrascal MA, Zuzarte M, Madeira N, Morais S, Macedo A, do Carmo A, Moreira PI, Cruz MT, Pereira CF. ER-mitochondria communication is involved in NLRP3 inflammasome activation under stress conditions in the innate immune system. Cell Mol Life Sci 2022; 79:213. [PMID: 35344105 PMCID: PMC11072401 DOI: 10.1007/s00018-022-04211-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 12/11/2022]
Abstract
Endoplasmic reticulum (ER) stress and mitochondrial dysfunction, which are key events in the initiation and/or progression of several diseases, are correlated with alterations at ER-mitochondria contact sites, the so-called "Mitochondria-Associated Membranes" (MAMs). These intracellular structures are also implicated in NLRP3 inflammasome activation which is an important driver of sterile inflammation, however, the underlying molecular basis remains unclear. This work aimed to investigate the role of ER-mitochondria communication during ER stress-induced NLRP3 inflammasome activation in both peripheral and central innate immune systems, by using THP-1 human monocytes and BV2 microglia cells, respectively, as in vitro models. Markers of ER stress, mitochondrial dynamics and mass, as well as NLRP3 inflammasome activation were evaluated by Western Blot, IL-1β secretion was measured by ELISA, and ER-mitochondria contacts were quantified by transmission electron microscopy. Mitochondrial Ca2+ uptake and polarization were analyzed with fluorescent probes, and measurement of aconitase and SOD2 activities monitored mitochondrial ROS accumulation. ER stress was demonstrated to activate the NLRP3 inflammasome in both peripheral and central immune cells. Studies in monocytes indicate that ER stress-induced NLRP3 inflammasome activation occurs by a Ca2+-dependent and ROS-independent mechanism, which is coupled with upregulation of MAMs-resident chaperones, closer ER-mitochondria contacts, as well as mitochondrial depolarization and impaired dynamics. Moreover, enhanced ER stress-induced NLRP3 inflammasome activation in the immune system was found associated with pathological conditions since it was observed in monocytes derived from bipolar disorder (BD) patients, supporting a pro-inflammatory status in BD. In conclusion, by demonstrating that ER-mitochondria communication plays a key role in the response of the innate immune cells to ER stress, this work contributes to elucidate the molecular mechanisms underlying NLRP3 inflammasome activation under stress conditions, and to disclose novel potential therapeutic targets for diseases associated with sterile inflammation.
Collapse
Affiliation(s)
- Ana Catarina Pereira
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Jessica De Pascale
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
| | - Rosa Resende
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Susana Cardoso
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Isabel Ferreira
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Faculty of Pharmacy, University Coimbra, Coimbra, Portugal
| | - Bruno Miguel Neves
- iBiMED-Department of Medical Sciences and Institute for Biomedicine, University Aveiro, Aveiro, Portugal
| | - Mylène A Carrascal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Tecnimede Group, Sintra, Portugal
| | - Mónica Zuzarte
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- iCBR-Institute for Clinical and Biomedical Research, University Coimbra, Coimbra, Portugal
| | - Nuno Madeira
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- CIBIT-Coimbra Institute for Biomedical Imaging and Translational Research, University Coimbra, Coimbra, Portugal
- Department of Psychiatry, CHUC-UC-Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Sofia Morais
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Department of Psychiatry, CHUC-UC-Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - António Macedo
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Department of Psychiatry, CHUC-UC-Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Anália do Carmo
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Department of Clinical Pathology, CHUC-UC-Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Paula I Moreira
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- Faculty of Medicine, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Maria Teresa Cruz
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal
- Faculty of Pharmacy, University Coimbra, Coimbra, Portugal
| | - Cláudia F Pereira
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University Coimbra, Coimbra, Portugal.
- Faculty of Medicine, University Coimbra, Coimbra, Portugal.
- CACC-Clinical Academic Center of Coimbra, Coimbra, Portugal.
- , Coimbra, Portugal.
| |
Collapse
|
20
|
Prista von Bonhorst F, Gall D, Dupont G. Impact of β-Amyloids Induced Disruption of Ca2+ Homeostasis in a Simple Model of Neuronal Activity. Cells 2022; 11:cells11040615. [PMID: 35203266 PMCID: PMC8869902 DOI: 10.3390/cells11040615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 01/25/2023] Open
Abstract
Alzheimer’s disease is characterized by a marked dysregulation of intracellular Ca2+ homeostasis. In particular, toxic β-amyloids (Aβ) perturb the activities of numerous Ca2+ transporters or channels. Because of the tight coupling between Ca2+ dynamics and the membrane electrical activity, such perturbations are also expected to affect neuronal excitability. We used mathematical modeling to systematically investigate the effects of changing the activities of the various targets of Aβ peptides reported in the literature on calcium dynamics and neuronal excitability. We found that the evolution of Ca2+ concentration just below the plasma membrane is regulated by the exchanges with the extracellular medium, and is practically independent from the Ca2+ exchanges with the endoplasmic reticulum. Thus, disruptions of Ca2+ homeostasis interfering with signaling do not affect the electrical properties of the neurons at the single cell level. In contrast, the model predicts that by affecting the activities of L-type Ca2+ channels or Ca2+-activated K+ channels, Aβ peptides promote neuronal hyperexcitability. On the contrary, they induce hypo-excitability when acting on the plasma membrane Ca2+ ATPases. Finally, the presence of pores of amyloids in the plasma membrane can induce hypo- or hyperexcitability, depending on the conditions. These modeling conclusions should help with analyzing experimental observations in which Aβ peptides interfere at several levels with Ca2+ signaling and neuronal activity.
Collapse
Affiliation(s)
- Francisco Prista von Bonhorst
- Unit of Theoretical Chronobiology, Faculté des Sciences (CP231), Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium;
| | - David Gall
- Research Laboratory in Human Reproduction, Faculté de Médecine (CP636), Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium;
| | - Geneviève Dupont
- Unit of Theoretical Chronobiology, Faculté des Sciences (CP231), Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium;
- Correspondence:
| |
Collapse
|
21
|
Valdebenito GE, Duchen MR. Monitoring Mitochondrial Membrane Potential in Live Cells Using Time-Lapse Fluorescence Imaging. Methods Mol Biol 2022; 2497:319-324. [PMID: 35771453 DOI: 10.1007/978-1-0716-2309-1_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The mitochondrial membrane potential (ΔΨm) generated by proton pumps (Complexes I, III, and IV) is an essential component in the process of energy generation during oxidative phosphorylation. Tetramethylrhodamine, methyl ester, perchlorate (TMRM) is one of the most commonly used fluorescent reporters of ΔΨm. TMRM is routinely employed in a steady state for the measurement of membrane potential. However, it can also be utilized with time-lapse fluorescence imaging to effectively monitor the changes in membrane potential in response to a given stimulus by analyzing the change in distribution of the dye with time.
Collapse
Affiliation(s)
| | - Michael R Duchen
- Department of Cell and Developmental Biology and Consortium for Mitochondrial Research, UCL, London, UK.
| |
Collapse
|
22
|
Lin KJ, Wang TJ, Chen SD, Lin KL, Liou CW, Lan MY, Chuang YC, Chuang JH, Wang PW, Lee JJ, Wang FS, Lin HY, Lin TK. Two Birds One Stone: The Neuroprotective Effect of Antidiabetic Agents on Parkinson Disease-Focus on Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitors. Antioxidants (Basel) 2021; 10:antiox10121935. [PMID: 34943038 PMCID: PMC8750793 DOI: 10.3390/antiox10121935] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 12/13/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease affecting more than 1% of the population over 65 years old. The etiology of the disease is unknown and there are only symptomatic managements available with no known disease-modifying treatment. Aging, genes, and environmental factors contribute to PD development and key players involved in the pathophysiology of the disease include oxidative stress, mitochondrial dysfunction, autophagic-lysosomal imbalance, and neuroinflammation. Recent epidemiology studies have shown that type-2 diabetes (T2DM) not only increased the risk for PD, but also is associated with PD clinical severity. A higher rate of insulin resistance has been reported in PD patients and is suggested to be a pathologic driver in this disease. Oral diabetic drugs including sodium-glucose cotransporter 2 (SGLT2) inhibitors, glucagon-like peptide-1 (GLP-1) receptor agonists, and dipeptidyl peptidase-4 (DPP-4) inhibitors have been shown to provide neuroprotective effects in both PD patients and experimental models; additionally, antidiabetic drugs have been demonstrated to lower incidence rates of PD in DM patients. Among these, the most recently developed drugs, SGLT2 inhibitors may provide neuroprotective effects through improving mitochondrial function and antioxidative effects. In this article, we will discuss the involvement of mitochondrial-related oxidative stress in the development of PD and potential benefits provided by antidiabetic agents especially focusing on sglt2 inhibitors.
Collapse
Affiliation(s)
- Kai-Jung Lin
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Family Medicine, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Tzu-Jou Wang
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Pediatric, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Shang-Der Chen
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Center of Parkinson's Disease, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Kai-Lieh Lin
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Chia-Wei Liou
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Center of Parkinson's Disease, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Min-Yu Lan
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Center of Parkinson's Disease, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Yao-Chung Chuang
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Center of Parkinson's Disease, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Jiin-Haur Chuang
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Pediatric Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Pei-Wen Wang
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Metabolism, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Jong-Jer Lee
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Ophthalmology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Feng-Sheng Wang
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
| | - Hung-Yu Lin
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan
| | - Tsu-Kung Lin
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Center of Parkinson's Disease, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| |
Collapse
|
23
|
Qi H, Li ZC, Wang SM, Wu L, Xu F, Liu ZL, Li X, Wang JZ. Tristability in mitochondrial permeability transition pore opening. CHAOS (WOODBURY, N.Y.) 2021; 31:123108. [PMID: 34972328 DOI: 10.1063/5.0065400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 11/09/2021] [Indexed: 06/14/2023]
Abstract
Mitochondrial permeability transition pore (PTP), a key regulator of cell life and death processes, is triggered by calcium ions (Ca2+) and potentiated by reactive oxygen species (ROS). Although the two modes of PTP opening, i.e., transient and persistent, have been identified for a long time, its dynamical mechanism is still not fully understood. To test a proposed hypothesis that PTP opening acts as a tristable switch, which is characterized by low, medium, and high open probability, we develop a three-variable model that focused on PTP opening caused by Ca2+ and ROS. For the system reduced to two differential equations for Ca2+ and ROS, both the stability analysis and the potential landscape feature that it exhibits tristability under standard parameters. For the full system, the bifurcation analysis suggests that it can achieve tristability over a wide range of input parameters. Furthermore, parameter sensitivity analysis demonstrates that the existence of tristability is a robust property. In addition, we show how the deterministic tristable property can be understood within a stochastic framework, which also explains the PTP dynamics at the level of a single channel. Overall, this study may yield valuable insights into the intricate regulatory mechanism of PTP opening.
Collapse
Affiliation(s)
- Hong Qi
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
| | - Zhi-Chao Li
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
| | - Shi-Miao Wang
- School of Mathematical Sciences, Shanxi University, Taiyuan 030006, China
| | - Lin Wu
- School of Mathematical Sciences, Shanxi University, Taiyuan 030006, China
| | - Fei Xu
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China
| | - Zhi-Long Liu
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China
| | - Xiang Li
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China
| | - Jia-Zeng Wang
- Department of Mathematics, Beijing Technology and Business University, Beijing 100048, China
| |
Collapse
|
24
|
Scicchitano M, Carresi C, Nucera S, Ruga S, Maiuolo J, Macrì R, Scarano F, Bosco F, Mollace R, Cardamone A, Coppoletta AR, Guarnieri L, Zito MC, Bava I, Cariati L, Greco M, Foti DP, Palma E, Gliozzi M, Musolino V, Mollace V. Icariin Protects H9c2 Rat Cardiomyoblasts from Doxorubicin-Induced Cardiotoxicity: Role of Caveolin-1 Upregulation and Enhanced Autophagic Response. Nutrients 2021; 13:nu13114070. [PMID: 34836326 PMCID: PMC8623794 DOI: 10.3390/nu13114070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 12/26/2022] Open
Abstract
Doxorubicin (Doxo) is a widely used antineoplastic drug which often induces cardiomyopathy, leading to congestive heart failure through the intramyocardial production of reactive oxygen species (ROS). Icariin (Ica) is a flavonoid isolated from Epimedii Herba (Berberidaceae). Some reports on the pharmacological activity of Ica explained its antioxidant and cardioprotective effects. The aim of our study was to assess the protective activities of Ica against Doxo-detrimental effects on rat heart-tissue derived embryonic cardiac myoblasts (H9c2 cells) and to identify, at least in part, the molecular mechanisms involved. Our results showed that pretreatment of H9c2 cells with 1 μM and 5 μM of Ica, prior to Doxo exposure, resulted in an improvement in cell viability, a reduction in ROS generation, the prevention of mitochondrial dysfunction and mPTP opening. Furthermore, for the first time, we identified one feasible molecular mechanism through which Ica could exerts its cardioprotective effects. Indeed, our data showed a significant reduction in Caveolin-1(Cav-1) expression levels and a specific inhibitory effect on phosphodiesterase 5 (PDE5a) activity, improving mitochondrial function compared to Doxo-treated cells. Besides, Ica significantly prevented apoptotic cell death and downregulated the main pro-autophagic marker Beclin-1 and LC3 lipidation rate, restoring physiological levels of activation of the protective autophagic process. These results suggest that Ica might have beneficial cardioprotective effects in attenuating cardiotoxicity in patients requiring anthracycline chemotherapy through the inhibition of oxidative stress and, in particular, through the modulation of Cav-1 expression levels and the involvement of PDE5a activity, thereby leading to cardiac cell survival.
Collapse
Affiliation(s)
- Miriam Scicchitano
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Cristina Carresi
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
- Correspondence:
| | - Saverio Nucera
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Stefano Ruga
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Jessica Maiuolo
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Roberta Macrì
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Federica Scarano
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Francesca Bosco
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Rocco Mollace
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Antonio Cardamone
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Anna Rita Coppoletta
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Lorenza Guarnieri
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Maria Caterina Zito
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Irene Bava
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Luca Cariati
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Marta Greco
- Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy;
| | - Daniela Patrizia Foti
- Department of Experimental, Clinical Medicine University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy;
| | - Ernesto Palma
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
- IRCCS San Raffaele Pisana, 88163 Roma, Italy
| | - Micaela Gliozzi
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Vincenzo Musolino
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
| | - Vincenzo Mollace
- Institute of Research for Food Safety and Health (IRC-FSH), Department of Health Sciences, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy; (M.S.); (S.N.); (S.R.); (J.M.); (R.M.); (F.S.); (F.B.); (R.M.); (A.C.); (A.R.C.); (L.G.); (M.C.Z.); (I.B.); (L.C.); (E.P.); (M.G.); (V.M.); (V.M.)
- IRCCS San Raffaele Pisana, 88163 Roma, Italy
| |
Collapse
|
25
|
Bosc C, Saland E, Bousard A, Gadaud N, Sabatier M, Cognet G, Farge T, Boet E, Gotanègre M, Aroua N, Mouchel PL, Polley N, Larrue C, Kaphan E, Picard M, Sahal A, Jarrou L, Tosolini M, Rambow F, Cabon F, Nicot N, Poillet-Perez L, Wang Y, Su X, Fovez Q, Kluza J, Argüello RJ, Mazzotti C, Avet-Loiseau H, Vergez F, Tamburini J, Fournié JJ, Tiong IS, Wei AH, Kaoma T, Marine JC, Récher C, Stuani L, Joffre C, Sarry JE. Mitochondrial inhibitors circumvent adaptive resistance to venetoclax and cytarabine combination therapy in acute myeloid leukemia. NATURE CANCER 2021; 2:1204-1223. [PMID: 35122057 DOI: 10.1038/s43018-021-00264-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/31/2021] [Indexed: 04/23/2023]
Abstract
Therapy resistance represents a major clinical challenge in acute myeloid leukemia (AML). Here we define a 'MitoScore' signature, which identifies high mitochondrial oxidative phosphorylation in vivo and in patients with AML. Primary AML cells with cytarabine (AraC) resistance and a high MitoScore relied on mitochondrial Bcl2 and were highly sensitive to venetoclax (VEN) + AraC (but not to VEN + azacytidine). Single-cell transcriptomics of VEN + AraC-residual cell populations revealed adaptive resistance associated with changes in oxidative phosphorylation, electron transport chain complex and the TP53 pathway. Accordingly, treatment of VEN + AraC-resistant AML cells with electron transport chain complex inhibitors, pyruvate dehydrogenase inhibitors or mitochondrial ClpP protease agonists substantially delayed relapse following VEN + AraC. These findings highlight the central role of mitochondrial adaptation during AML therapy and provide a scientific rationale for alternating VEN + azacytidine with VEN + AraC in patients with a high MitoScore and to target mitochondrial metabolism to enhance the sensitivity of AML cells to currently approved therapies.
Collapse
Affiliation(s)
- Claudie Bosc
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Estelle Saland
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Aurélie Bousard
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Noémie Gadaud
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Marie Sabatier
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Guillaume Cognet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Thomas Farge
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Emeline Boet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Mathilde Gotanègre
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Nesrine Aroua
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Pierre-Luc Mouchel
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Nathaniel Polley
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Clément Larrue
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Eléonore Kaphan
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Muriel Picard
- Réanimation Polyvalente IUCT-oncopole, CHU de Toulouse, Toulouse, France
| | - Ambrine Sahal
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Latifa Jarrou
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Marie Tosolini
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
| | - Florian Rambow
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Florence Cabon
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Nathalie Nicot
- LuxGen, Quantitative Biology Unit, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Laura Poillet-Perez
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Yujue Wang
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Xiaoyang Su
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Quentin Fovez
- Cancer Heterogeneity Plasticity and Resistance to Therapies (CANTHER), University of Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277, Lille, France
| | - Jérôme Kluza
- Cancer Heterogeneity Plasticity and Resistance to Therapies (CANTHER), University of Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277, Lille, France
| | - Rafael José Argüello
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Céline Mazzotti
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Hervé Avet-Loiseau
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - François Vergez
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | | | - Jean-Jacques Fournié
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
| | - Ing S Tiong
- Department of Clinical Haematology, The Alfred Hospital and Monash University, Melbourne, Victoria, Australia
| | - Andrew H Wei
- Department of Clinical Haematology, The Alfred Hospital and Monash University, Melbourne, Victoria, Australia
| | - Tony Kaoma
- Computational Biomedicine Research Group, Quantitative Biology Unit, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Jean-Christophe Marine
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Christian Récher
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Lucille Stuani
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Carine Joffre
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Jean-Emmanuel Sarry
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France.
- LabEx Toucan, Toulouse, France.
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France.
| |
Collapse
|
26
|
Perez-Leanos CA, Romero-Campos HE, Dupont G, Gonzalez-Velez V. Reduction of ER-Mitochondria Distance: a Key Feature in Alzheimer's and Parkinson's Disease, and During Cancer Treatment. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2021; 2021:4412-4415. [PMID: 34892198 DOI: 10.1109/embc46164.2021.9631090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
One remarkable dynamic cell structure is the region between the endoplasmic reticulum (ER) and the mitochondria, termed the mitochondria-associated membranes (MAM). MAMs carry out different cellular functions such as Ca2+ homeostasis and lipid synthesis, which depend on an adequate distance separating the ER and mitochondria. A decreased distance has been observed in Alzheimer's disease, Parkinson's disease, and during cancer treatment. It is unclear how dysregulation of the spatial characteristics of MAMs can cause abnormal Ca2+ dynamics which could end in cell death. In this work, a computational model was proposed to study the relationship between a decreased ER-mitochondria distance and mitochondria-induced cell death. Our results point towards the mitochondrial permeability transition pore (mPTP) as a key cell death signaling mechanism indirectly regulated by the spatial characteristics of MAMs.Clinical Relevance- The endoplasmic reticulum-mitochondria crosstalk plays an important role in the mPTP-induced apoptosis. This process could be behind neurodegeneration in Alzheimer's and Parkinson's diseases, as well as behind the induced cell death during cancer treatment.
Collapse
|
27
|
van der Westhuizen D, Bezuidenhout DI, Munro OQ. Cancer molecular biology and strategies for the design of cytotoxic gold(I) and gold(III) complexes: a tutorial review. Dalton Trans 2021; 50:17413-17437. [PMID: 34693422 DOI: 10.1039/d1dt02783b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This tutorial review highlights key principles underpinning the design of selected metallodrugs to target specific biological macromolecules (DNA and proteins). The review commences with a descriptive overview of the eukaryotic cell cycle and the molecular biology of cancer, particularly apoptosis, which is provided as a necessary foundation for the discovery, design, and targeting of metal-based anticancer agents. Drugs which target DNA have been highlighted and clinically approved metallodrugs discussed. A brief history of the development of mainly gold-based metallodrugs is presented prior to addressing ligand systems for stabilizing and adding functionality to bio-active gold(I) and gold(III) complexes, particularly in the burgeoning field of anticancer metallodrugs. Concepts such as multi-modal and selective cytotoxic agents are covered where necessary for selected compounds. The emerging role of carbenes as the ligand system of choice to achieve these goals for gold-based metallodrug candidates is highlighted prior to closing the review with comments on some future directions that this research field might follow. The latter section ultimately emphasizes the importance of understanding the fate of metal complexes in cells to garner key mechanistic insights.
Collapse
Affiliation(s)
- Danielle van der Westhuizen
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
| | - Daniela I Bezuidenhout
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland.
| | - Orde Q Munro
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
| |
Collapse
|
28
|
Naguib M, Abou Elfotouh M, Wifi MN. Elevated Serum Cyclophilin D Level is Associated with Nonalcoholic Fatty Liver Disease and Higher Fibrosis Scores in Patients with Diabetes Mellitus. Int J Gen Med 2021; 14:4665-4675. [PMID: 34434058 PMCID: PMC8380628 DOI: 10.2147/ijgm.s322986] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/21/2021] [Indexed: 12/11/2022] Open
Abstract
Background Cyclophilin D (CypD) is a mitochondrial matrix protein involved in liver steatosis and fibrosis in vitro. However, the role of CypD in the development of fatty liver and liver fibrosis in humans has not been determined. Purpose To measure the serum level of CypD in patients with type 2 diabetes (T2DM) and nonalcoholic fatty liver disease (NAFLD) and to assess its relation to the presence of hepatic steatosis and fibrosis in this group of patients. Patients and Methods In this cross-sectional study, 30 patients with diabetes and NAFLD were compared to 30 patients with diabetes without NAFLD and 30 age- and sex-matched healthy subjects. Abdominal ultrasound was used to diagnose NAFLD. Serum CypD was measured using ELISA. Fibrosis-4 (FIB-4) index, AST to platelet ratio index (APRI), and NAFLD fibrosis score (NFS) were used as markers of liver fibrosis in patients with NAFLD. Patients with NAFLD were divided into two subgroups based on FIB-4 index: patients with liver fibrosis (FIB-4 >1.45) and patients without liver fibrosis (FIB-4 <1.45). CypD and other clinical and biochemical parameters were validated as predictors of NAFLD and liver fibrosis in diabetic patients in multivariate logistic regression analysis. Results Diabetic patients with NAFLD had higher serum CypD levels than those without NAFLD (11.65±2.96 vs 6.58±1.90 ng/mL, respectively, P <0.001). Correlation analysis revealed a significant positive correlation between CypD and FIB-4 index (P=0.001), APRI (P=0.013) and NFS (P<0.001). GGT and CypD were the only predictors of NAFLD. For the prediction of significant fibrosis, AUROC of CypD was 0.835 with a cutoff >14.05 ng/mL provides specificity of 81.8% and sensitivity of 75%. Conclusion Serum CypD is related to hepatic steatosis and fibrosis in diabetic patients. Serum CypD may thus provide a novel marker and therapeutic target of NAFLD and liver fibrosis.
Collapse
Affiliation(s)
- Mervat Naguib
- Diabetes and Endocrinology Unite, Internal Medicine Department, Faculty of Medicine, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mahmoud Abou Elfotouh
- Hepatology Unite, Internal Medicine Department, Faculty of Medicine, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mohamed-Naguib Wifi
- Hepatology Unite, Internal Medicine Department, Faculty of Medicine, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| |
Collapse
|
29
|
Khmelinskii I, Makarov V. Reversible and irreversible mitochondrial swelling in vitro. Biophys Chem 2021; 278:106668. [PMID: 34418677 DOI: 10.1016/j.bpc.2021.106668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 11/18/2022]
Abstract
Mitochondrial activity as regards ATP production strongly depends on mitochondrial swelling (MS) mode. Therefore, this work analyzes reversible and irreversible MS using a detailed biophysical model. The reported model includes mechanical properties of the inner mitochondrial membrane (IMM). The model describes MS dynamics for spherically symmetric, axisymmetric ellipsoidal and general ellipsoidal mitochondria. Mechanical stretching properties of the IMM were described by a second-rank rigidity tensor. The tensor components were estimated by fitting to the earlier reported results of in vitro experiments. The IMM rigidity constant of ca. 0.008 dyn/nm was obtained for linear deformations. The model also included membrane bending effects, which were small compared to those of membrane stretching. The model was also tested by simulation of the earlier reported experimental data and of the system dynamics at different initial conditions, predicting the system behavior. The transition criteria from reversible to irreversible swelling were determined and tested. The presently developed model is applicable directly to the analysis of in vitro experimental data, while additional improvements are necessary before it could be used to describe mitochondrial swelling in vivo. The reported theoretical model also provides an idea of physically consistent mechanism for the permeability transport pore (PTP) opening, which depends on the IMM stretching stress. In the current study, this idea is discussed briefly, but a detailed theoretical analysis of these ideas will be performed later. The currently developed model provides new understanding of the detailed MS mechanism and of the conditions for the transition between reversible and irreversible MS modes. On the other hand, the current model provides useful mathematical tools, that may be successfully used in mitochondrial biophysics research, and also in other applications, predicting the behavior of mitochondria in different conditions of the surrounding media in vitro or cellular cyto(sarco)plasm in vivo. These mathematical tools are based on real biophysical processes occurring in mitochondria. Thus, we note a significant progress in the theoretical approach, which may be used in real biological systems, compared to the earlier reported models. Significance of this study derives from inclusion of IMM mechanical properties, which directly impact the reversible and irreversible mitochondrial swelling dynamics. Reversible swelling corresponds to reversible IMM deformations, while irreversible swelling corresponds to irreversible deformations, with eventual membrane disruption. The IMM mechanical properties are directly dependent on the membrane biochemical composition and structure. The IMM deformationas are induced by osmotic pressure created by the ionic/neutral solute imbalance between the mitochondrial matrix media and the bulk solution in vitro, or cyto(sarco)plasm in vivo. The novelty of the reported model is in the biophysical mechanism detailing ionic and neutral solute transport for a large number of solutes, which were not taken into account in the earlier reported biophysical models of MS. Therefore, the reported model allows understanding response of mitochondria to the changes of initial concentration(s) of any of the solute(s) included in the model. Note that the values of all of the model parameters and kinetic constants have been estimated and the resulting complete model may be used for quantitative analysis of mitochondrial swelling dynamics in conditions of real in vitro experiments.
Collapse
Affiliation(s)
- Igor Khmelinskii
- Universidade do Algarve, FCT, DQB and CEOT, 8005-139 Faro, Portugal
| | - Vladimir Makarov
- University of Puerto Rico, Rio Piedras Campus, PO Box 23343, San Juan, PR 00931-3343, USA.
| |
Collapse
|
30
|
Bello IJ, Oyebode OT, Olanlokun JO, Omodara TO, Olorunsogo OO. Plumbagin induces testicular damage via mitochondrial-dependent cell death. Chem Biol Interact 2021; 347:109582. [PMID: 34302802 DOI: 10.1016/j.cbi.2021.109582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 06/15/2021] [Accepted: 07/16/2021] [Indexed: 10/20/2022]
Abstract
Different aspects of reproductive functions are regulated by mitochondrial-controlled events. This study investigated the effect of plumbagin (PL) on testicular mitochondria with a view to unravelling the mechanism of the antifertility potential of plumbagin in testis of healthy rats. Thirty-two male Wistar strain albino rats were randomly allocated into four groups of eight animals each. The control or healthy group received orally 0.1 % DMSO while animals in the remaining three groups received 2.5 mg PL/kg bdwt, 5.0 mg PL/kg bdwt and 10 mg PL/kg bdwt, respectively, for 14 days. In study two, twenty-four male Wistar rats were randomly divided into three (3) groups and were orally administered 0.1% DMSO (control), 30 and 100 mg/kg PL, respectively once daily for 72 h. Rat testis mitochondria were isolated using differential centrifugation. The mitochondrial Permeability Transition (mPT) pore, mitochondrial ATPase (mATPase) activity and mitochondrial lipid peroxidation were assessed spectrophotometrically. Expression of apoptotic proteins (p53, Bax, Bcl-2) and the release of cytochrome c were determined by immunochemical technique. Reproductive receptors (FSH, PR), the expression of aromatase, Testis Specific Kinase-1 {TESK-1} were quantified by RT-PCR. The various doses of plumbagin (2.5, 5.0 and 10 mg/kg bdwt) induced opening of the testicular mPT pore by 2, 5 and 8 folds, respectively, after 14 days of oral administration. These doses of plumbagin also caused enhancement of mATPase activity, elevated generation of mLPO as well as increases in the concentrations of caspases 9 and 3. Sperm analysis revealed that these doses of PL also caused significant decreases in sperm count and motility and increased sperm abnormalities compared to control. Interestingly, these effects were accompanied by dose-dependent expressions of the Bak, p53 and cytochrome c release. Conversely, the abundance of anti-apoptotic Bcl-2 protein decreased relative to control. The levels of transcripts of FSH and progesterone receptors as well as TESK-1 and aromatase decreased significantly relative to control. Furthermore, PL strongly inhibited p53-MDM2 compared to control. Altogether, these findings show that plumbagin damages testicular cells through the activation of mitochondrial pathway involving the p53 protein network.
Collapse
Affiliation(s)
- Isaac J Bello
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olubukola T Oyebode
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - John O Olanlokun
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Todiimu O Omodara
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olufunso O Olorunsogo
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| |
Collapse
|
31
|
Jia K, Du H. Mitochondrial Permeability Transition: A Pore Intertwines Brain Aging and Alzheimer's Disease. Cells 2021; 10:649. [PMID: 33804048 PMCID: PMC8001058 DOI: 10.3390/cells10030649] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 12/15/2022] Open
Abstract
Advanced age is the greatest risk factor for aging-related brain disorders including Alzheimer's disease (AD). However, the detailed mechanisms that mechanistically link aging and AD remain elusive. In recent years, a mitochondrial hypothesis of brain aging and AD has been accentuated. Mitochondrial permeability transition pore (mPTP) is a mitochondrial response to intramitochondrial and intracellular stresses. mPTP overactivation has been implicated in mitochondrial dysfunction in aging and AD brains. This review summarizes the up-to-date progress in the study of mPTP in aging and AD and attempts to establish a link between brain aging and AD from a perspective of mPTP-mediated mitochondrial dysfunction.
Collapse
Affiliation(s)
- Kun Jia
- Department of Pharmacology and Toxicology, The University of Kansas, Lawrence, KS 66045, USA;
| | - Heng Du
- Department of Pharmacology and Toxicology, The University of Kansas, Lawrence, KS 66045, USA;
- Higuchi Biosciences Center, The University of Kansas, Lawrence, KS 66045, USA
| |
Collapse
|
32
|
Qi H, Xu G, Peng XL, Li X, Shuai J, Xu R. Roles of four feedback loops in mitochondrial permeability transition pore opening induced by Ca^{2+} and reactive oxygen species. Phys Rev E 2021; 102:062422. [PMID: 33466063 DOI: 10.1103/physreve.102.062422] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 12/04/2020] [Indexed: 11/07/2022]
Abstract
Transient or sustained permeability transition pore (PTP) opening is important in normal physiology or cell death, respectively. These are closely linked to Ca^{2+} and reactive oxygen species (ROS). The entry of Ca^{2+} into mitochondria regulates ROS production, and both Ca^{2+} and ROS trigger PTP opening. In addition to this feedforward loop, there exist four feedback loops in the Ca^{2+}-ROS-PTP system. ROS promotes Ca^{2+} entering (F1) and induces further ROS generation (F2), forming two positive feedback loops. PTP opening results in the efflux of Ca^{2+} (F3) and ROS (F4) from the mitochondria, forming two negative feedback loops. Owing to these complexities, we construct a mathematical model to dissect the roles of these feedback loops in the dynamics of PTP opening. The qualitative agreement between simulation results and recent experimental observations supports our hypothesis that under physiological conditions the PTP opens in an oscillatory state, while under pathological conditions it opens in a high steady state. We clarify that the negative feedback loops are responsible for producing oscillations, wherein F3 plays a more prominent role than F4; whereas the positive feedback loops are beneficial for maintaining oscillation robustness, wherein F1 has a more dominant role than F2. Furthermore, we manifest that the proper increase in negative feedback strength or decrease in positive feedback strength not only facilitates the occurrence of oscillations and thus protects the system against a high steady state, but also assists in lowering the oscillation peak. This study may provide potential therapeutic strategies in treating neurodegenerative diseases due to PTP dysfunction.
Collapse
Affiliation(s)
- Hong Qi
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China.,Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Guoping Xu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China.,Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Xiao-Long Peng
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China.,Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Xiang Li
- Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China.,State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361102, China
| | - Jianwei Shuai
- Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China.,State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361102, China.,National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen 361102, China
| | - Rui Xu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China.,Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| |
Collapse
|
33
|
Rottenberg H, Hoek JB. The Mitochondrial Permeability Transition: Nexus of Aging, Disease and Longevity. Cells 2021; 10:cells10010079. [PMID: 33418876 PMCID: PMC7825081 DOI: 10.3390/cells10010079] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/23/2020] [Accepted: 01/01/2021] [Indexed: 12/11/2022] Open
Abstract
The activity of the mitochondrial permeability transition pore, mPTP, a highly regulated multi-component mega-channel, is enhanced in aging and in aging-driven degenerative diseases. mPTP activity accelerates aging by releasing large amounts of cell-damaging reactive oxygen species, Ca2+ and NAD+. The various pathways that control the channel activity, directly or indirectly, can therefore either inhibit or accelerate aging or retard or enhance the progression of aging-driven degenerative diseases and determine lifespan and healthspan. Autophagy, a catabolic process that removes and digests damaged proteins and organelles, protects the cell against aging and disease. However, the protective effect of autophagy depends on mTORC2/SKG1 inhibition of mPTP. Autophagy is inhibited in aging cells. Mitophagy, a specialized form of autophagy, which retards aging by removing mitochondrial fragments with activated mPTP, is also inhibited in aging cells, and this inhibition leads to increased mPTP activation, which is a major contributor to neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases. The increased activity of mPTP in aging turns autophagy/mitophagy into a destructive process leading to cell aging and death. Several drugs and lifestyle modifications that enhance healthspan and lifespan enhance autophagy and inhibit the activation of mPTP. Therefore, elucidating the intricate connections between pathways that activate and inhibit mPTP, in the context of aging and degenerative diseases, could enhance the discovery of new drugs and lifestyle modifications that slow aging and degenerative disease.
Collapse
Affiliation(s)
- Hagai Rottenberg
- New Hope Biomedical R&D, 23 W. Bridge street, New Hope, PA 18938, USA
- Correspondence: ; Tel.: +1-267-614-5588
| | - Jan B. Hoek
- MitoCare Center, Department of Anatomy, Pathology and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| |
Collapse
|
34
|
Naumova N, Šachl R. Regulation of Cell Death by Mitochondrial Transport Systems of Calcium and Bcl-2 Proteins. MEMBRANES 2020; 10:E299. [PMID: 33096926 PMCID: PMC7590060 DOI: 10.3390/membranes10100299] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022]
Abstract
Mitochondria represent the fundamental system for cellular energy metabolism, by not only supplying energy in the form of ATP, but also by affecting physiology and cell death via the regulation of calcium homeostasis and the activity of Bcl-2 proteins. A lot of research has recently been devoted to understanding the interplay between Bcl-2 proteins, the regulation of these interactions within the cell, and how these interactions lead to the changes in calcium homeostasis. However, the role of Bcl-2 proteins in the mediation of mitochondrial calcium homeostasis, and therefore the induction of cell death pathways, remain underestimated and are still not well understood. In this review, we first summarize our knowledge about calcium transport systems in mitochondria, which, when miss-regulated, can induce necrosis. We continue by reviewing and analyzing the functions of Bcl-2 proteins in apoptosis. Finally, we link these two regulatory mechanisms together, exploring the interactions between the mitochondrial Ca2+ transport systems and Bcl-2 proteins, both capable of inducing cell death, with the potential to determine the cell death pathway-either the apoptotic or the necrotic one.
Collapse
Affiliation(s)
| | - Radek Šachl
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, 182 23 Prague, Czech Republic;
| |
Collapse
|
35
|
Shah SI, Ullah G. The Function of Mitochondrial Calcium Uniporter at the Whole-Cell and Single Mitochondrion Levels in WT, MICU1 KO, and MICU2 KO Cells. Cells 2020; 9:E1520. [PMID: 32580385 PMCID: PMC7349584 DOI: 10.3390/cells9061520] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 01/05/2023] Open
Abstract
Mitochondrial Ca2+ ([Ca2+]M) uptake through its Ca2+ uniporter (MCU) is central to many cell functions such as bioenergetics, spatiotemporal organization of Ca2+ signals, and apoptosis. MCU activity is regulated by several intrinsic proteins including MICU1, MICU2, and EMRE. While significant details about the role of MICU1, MICU2, and EMRE in MCU function have emerged recently, a key challenge for the future experiments is to investigate how these regulatory proteins modulate mitochondrial Ca2+ influx through MCU in intact cells under pathophysiological conditions. This is further complicated by the fact that several variables affecting MCU function change dynamically as cell functions. To overcome this void, we develop a data-driven model that closely replicates the behavior of MCU under a wide range of cytosolic Ca2+ ([Ca2+]C), [Ca2+]M, and mitochondrial membrane potential values in WT, MICU1 knockout (KO), and MICU2 KO cells at the single mitochondrion and whole-cell levels. The model is extended to investigate how MICU1 or MICU2 KO affect mitochondrial function. Moreover, we show how Ca2+ buffering proteins, the separation between mitochondrion and Ca2+-releasing stores, and the duration of opening of Ca2+-releasing channels affect mitochondrial function under different conditions. Finally, we demonstrate an easy extension of the model to single channel function of MCU.
Collapse
Affiliation(s)
| | - Ghanim Ullah
- Department of Physics, University of South Florida, Tampa, FL 33647, USA;
| |
Collapse
|