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Stevic N, Maalouf J, Argaud L, Gallo-Bona N, Lo Grasso M, Gouriou Y, Gomez L, Crola Da Silva C, Ferrera R, Ovize M, Cour M, Bidaux G. Cooling Uncouples Differentially ROS Production from Respiration and Ca 2+ Homeostasis Dynamic in Brain and Heart Mitochondria. Cells 2022; 11:cells11060989. [PMID: 35326440 PMCID: PMC8947173 DOI: 10.3390/cells11060989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/17/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
Hypothermia provides an effective neuro and cardio-protection in clinical settings implying ischemia/reperfusion injury (I/R). At the onset of reperfusion, succinate-induced reactive oxygen species (ROS) production, impaired oxidative phosphorylation (OXPHOS), and decreased Ca2+ retention capacity (CRC) concur to mitochondrial damages. We explored the effects of temperature from 6 to 37 °C on OXPHOS, ROS production, and CRC, using isolated mitochondria from mouse brain and heart. Oxygen consumption and ROS production was gradually inhibited when cooling from 37 to 6 °C in brain mitochondria (BM) and heart mitochondria (HM). The decrease in ROS production was gradual in BM but steeper between 31 and 20 °C in HM. In respiring mitochondria, the gradual activation of complex II, in addition of complex I, dramatically enhanced ROS production at all temperatures without modifying respiration, likely because of ubiquinone over-reduction. Finally, CRC values were linearly increased by cooling in both BM and HM. In BM, the Ca2+ uptake rate by the mitochondrial calcium uniporter (MCU) decreased by 2.7-fold between 25 and 37 °C, but decreased by 5.7-fold between 25 and 37 °C in HM. In conclusion, mild cold (25-37 °C) exerts differential inhibitory effects by preventing ROS production, by reverse electron transfer (RET) in BM, and by reducing MCU-mediated Ca2+ uptake rate in BM and HM.
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Affiliation(s)
- Neven Stevic
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
- Hospices Civils de Lyon, Hôpital Edouard Herriot, Service de Médecine Intensive-Réanimation, F-69437 Lyon, France
| | - Jennifer Maalouf
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
| | - Laurent Argaud
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Hôpital Edouard Herriot, Service de Médecine Intensive-Réanimation, F-69437 Lyon, France
| | - Noëlle Gallo-Bona
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Mégane Lo Grasso
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Yves Gouriou
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Ludovic Gomez
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Claire Crola Da Silva
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - René Ferrera
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Michel Ovize
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
| | - Martin Cour
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Hôpital Edouard Herriot, Service de Médecine Intensive-Réanimation, F-69437 Lyon, France
| | - Gabriel Bidaux
- Univ-Lyon, CarMeN Laboratory, Inserm U1060, Université Claude Bernard Lyon 1, INSA Lyon, F-69550 Bron, France; (N.S.); (J.M.); (L.A.); (N.G.-B.); (M.L.G.); (Y.G.); (L.G.); (C.C.D.S.); (R.F.); (M.O.); (M.C.)
- Hospices Civils de Lyon, Groupement Hospitalier EST, Département de Cardiologie, IHU-OPERA Bâtiment B13, F-69500 Bron, France
- Correspondence:
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Fernandez-Sanz C, De la Fuente S, Sheu SS. Mitochondrial Ca 2+ concentrations in live cells: quantification methods and discrepancies. FEBS Lett 2019; 593:1528-1541. [PMID: 31058316 DOI: 10.1002/1873-3468.13427] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/29/2019] [Accepted: 05/02/2019] [Indexed: 12/11/2022]
Abstract
Intracellular Ca2+ signaling controls numerous cellular functions. Mitochondria respond to cytosolic Ca2+ changes by adapting mitochondrial functions and, in some cell types, shaping the spatiotemporal properties of the cytosolic Ca2+ signal. Numerous methods have been developed to specifically and quantitatively measure the mitochondrial-free Ca2+ concentrations ([Ca2+ ]m ), but there are still significant discrepancies in the calculated absolute values of [Ca2+ ]m in stimulated live cells. These discrepancies may be due to the distinct properties of the methods used to measure [Ca2+ ]m , the calcium-free/bound ratio, and the cell-type and stimulus-dependent Ca2+ dynamics. Critical processes happening in the mitochondria, such as ATP generation, ROS homeostasis, and mitochondrial permeability transition opening, depend directly on the [Ca2+ ]m values. Thus, precise determination of absolute [Ca2+ ]m values is imperative for understanding Ca2+ signaling. This review summarizes the reported calibrated [Ca2+ ]m values in many cell types and discusses the discrepancies among these values. Areas for future research are also proposed.
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Affiliation(s)
- Celia Fernandez-Sanz
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sergio De la Fuente
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Shey-Shing Sheu
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA
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Cabrera-Orefice A, Ibarra-García-Padilla R, Maldonado-Guzmán R, Guerrero-Castillo S, Luévano-Martínez LA, Pérez-Vázquez V, Gutiérrez-Aguilar M, Uribe-Carvajal S. The Saccharomyces cerevisiae mitochondrial unselective channel behaves as a physiological uncoupling system regulated by Ca2+, Mg2+, phosphate and ATP. J Bioenerg Biomembr 2015; 47:477-91. [PMID: 26530988 DOI: 10.1007/s10863-015-9632-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 10/23/2015] [Indexed: 02/07/2023]
Abstract
It is proposed that the Saccharomyces cerevisiae the Mitochondrial Unselective Channel ((Sc)MUC) is tightly regulated constituting a physiological uncoupling system that prevents overproduction of reactive oxygen species (ROS). Mg(2+), Ca(2+) or phosphate (Pi) close (Sc)MUC, while ATP or a high rate of oxygen consumption open it. We assessed (Sc)MUC activity by measuring in isolated mitochondria the respiratory control, transmembrane potential (ΔΨ), swelling and production of ROS. At increasing [Pi], less [Ca(2+)] and/or [Mg(2+)] were needed to close (Sc)MUC or increase ATP synthesis. The Ca(2+)-mediated closure of (Sc)MUC was prevented by high [ATP] while the Mg(2+) or Pi effect was not. When Ca(2+) and Mg(2+) were alternatively added or chelated, (Sc)MUC opened and closed reversibly. Different effects of Ca(2+) vs Mg(2+) effects were probably due to mitochondrial Mg(2+) uptake. Our results suggest that (Sc)MUC activity is dynamically controlled by both the ATP/Pi ratio and divalent cation fluctuations. It is proposed that the reversible opening/closing of (Sc)MUC leads to physiological uncoupling and a consequent decrease in ROS production.
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Affiliation(s)
- Alfredo Cabrera-Orefice
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rodrigo Ibarra-García-Padilla
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rocío Maldonado-Guzmán
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - Luis A Luévano-Martínez
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | - Salvador Uribe-Carvajal
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico. .,Salvador Uribe-Carvajal, Department of Molecular Genetics, Instituto de Fisiología Celular, UNAM, Apdo. postal 70-242, 04510, Mexico City, Mexico.
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de la Fuente S, Fonteriz RI, Montero M, Alvarez J. Dynamics of mitochondrial [Ca(2+)] measured with the low-Ca(2+)-affinity dye rhod-5N. Cell Calcium 2011; 51:65-71. [PMID: 22133611 DOI: 10.1016/j.ceca.2011.10.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 10/20/2011] [Accepted: 10/30/2011] [Indexed: 11/19/2022]
Abstract
Available methods to measure mitochondrial [Ca(2+)] ([Ca(2+)](M)) include both targeted proteins and fluorescent dyes. Targeted proteins usually report much higher [Ca(2+)](M) values than fluorescent dyes, up to two orders of magnitude. However, we show here that the low-Ca(2+)-affinity dye rhod-5N provides [Ca(2+)](M) values similar to those reported by targeted aequorin, suggesting that the discrepancies are mainly due to the higher Ca(2+)-affinity of the fluorescent dyes used. We find rhod-5N has an apparent in situ intramitochondrial Kd around 0.5mM. Addition of Ca(2+) buffers containing between 4.5 and 10μM [Ca(2+)] to permeabilized cells loaded with rhod-5N induced increases in calibrated [Ca(2+)](M) up to the 100μM-1mM range, which were dependent on mitochondrial membrane potential. Ca(2+) release from mitochondria was largely dependent on [Na(+)]. We have then used rhod-5N loaded cells to investigate the [Ca(2+)](M) response to agonist stimulation at the single-cell and subcellular level. The [Ca(2+)](M) peaks induced by histamine varied by nearly 10-fold among different cells, with a mean about 25μM. In the presence of the Ca(2+) uniporter stimulator kaempferol, the [Ca(2+)](M) peaks induced by histamine were also highly variable, and the mean [Ca(2+)](M) peak was 3-fold higher. Simultaneous measurement of cytosolic and mitochondrial [Ca(2+)] peaks showed little correlation among the heights of the peaks in both compartments. Studying the [Ca(2+)](M) peaks at the subcellular level, we found significant heterogeneities among regions in the same cell. In particular, the [Ca(2+)](M) increase in mitochondrial regions close to the nucleus was more than double that of mitochondrial regions far from the nucleus.
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Affiliation(s)
- Sergio de la Fuente
- Instituto de Biología y Genética Molecular (IBGM), Departamento de Bioquímica y Biología Molecular y Fisiología, Universidad de Valladolid, Valladolid, Spain
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Youm JB, Choi SW, Jang CH, Kim HK, Leem CH, Kim N, Han J. A computational model of cytosolic and mitochondrial [ca] in paced rat ventricular myocytes. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2011; 15:217-39. [PMID: 21994480 DOI: 10.4196/kjpp.2011.15.4.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 08/09/2011] [Accepted: 08/09/2011] [Indexed: 11/15/2022]
Abstract
We carried out a series of experiment demonstrating the role of mitochondria in the cytosolic and mitochondrial Ca(2+) transients and compared the results with those from computer simulation. In rat ventricular myocytes, increasing the rate of stimulation (1~3 Hz) made both the diastolic and systolic [Ca(2+)] bigger in mitochondria as well as in cytosol. As L-type Ca(2+) channel has key influence on the amplitude of Ca(2+)-induced Ca(2+) release, the relation between stimulus frequency and the amplitude of Ca(2+) transients was examined under the low density (1/10 of control) of L-type Ca(2+) channel in model simulation, where the relation was reversed. In experiment, block of Ca(2+) uniporter on mitochondrial inner membrane significantly reduced the amplitude of mitochondrial Ca(2+) transients, while it failed to affect the cytosolic Ca(2+) transients. In computer simulation, the amplitude of cytosolic Ca(2+) transients was not affected by removal of Ca(2+) uniporter. The application of carbonyl cyanide 4-(trifluoromethoxy) phenylhydrazone (FCCP) known as a protonophore on mitochondrial membrane to rat ventricular myocytes gradually increased the diastolic [Ca(2+)] in cytosol and eventually abolished the Ca(2+) transients, which was similarly reproduced in computer simulation. The model study suggests that the relative contribution of L-type Ca(2+) channel to total transsarcolemmal Ca(2+) flux could determine whether the cytosolic Ca(2+) transients become bigger or smaller with higher stimulus frequency. The present study also suggests that cytosolic Ca(2+) affects mitochondrial Ca(2+) in a beat-to-beat manner, however, removal of Ca(2+) influx mechanism into mitochondria does not affect the amplitude of cytosolic Ca(2+) transients.
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Affiliation(s)
- Jae Boum Youm
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-735, Korea
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