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García-Casas P, Arias-Del-Val J, Alvarez-Illera P, Wojnicz A, de Los Ríos C, Fonteriz RI, Montero M, Alvarez J. The Neuroprotector Benzothiazepine CGP37157 Extends Lifespan in C. elegans Worms. Front Aging Neurosci 2019; 10:440. [PMID: 30705628 PMCID: PMC6344432 DOI: 10.3389/fnagi.2018.00440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 12/31/2018] [Indexed: 11/14/2022] Open
Abstract
The benzothiazepine CGP37157 has shown neuroprotective effects in several in vitro models of excitotoxicity involving dysregulation of intracellular Ca2+ homeostasis. Although its mechanism of neuroprotection is unclear, it is probably related with some of its effects on Ca2+ homeostasis. CGP37157 is a well-known inhibitor of the mitochondrial Na+/Ca2+ exchanger (mNCX). However, it is not very specific and also blocks several other Ca2+ channels and transporters, including voltage-gated Ca2+ channels, plasma membrane Na+/Ca2+ exchanger and the Ca2+ homeostasis modulator 1 channel (CALHM1). In the present work, we have studied if CGP37157 could also induce changes in life expectancy. We now report that CGP37157 extends C. elegans lifespan by 10%–15% with a bell-shaped concentration-response, with high concentrations producing no effect. The effect was even larger (25% increase in life expectancy) in worms fed with heat-inactivated bacteria. The worm CGP37157 concentration producing maximum effect was measured by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) and was close to the IC50 for inhibition of the Na+/Ca2+ exchanger. CGP37157 also extended the lifespan in eat-2 mutants (a model for caloric restriction), suggesting that caloric restriction is not involved in the mechanism of lifespan extension. Actually, CGP37157 produced no effect in mutants of the TOR pathway (daf15/unc24) or the insulin/insulin-like growth factor-1 (IGF-1) pathway (daf-2), indicating that the effect involves these pathways. Moreover, CGP37157 was also ineffective in nuo-6 mutants, which have a defect in the mitochondrial respiratory chain complex I. Since it has been described that neuroprotection by this compound in cell cultures is abolished by mitochondrial inhibitors, this suggests that life extension in C. elegans and neuroprotection in cell cultures may share a similar mechanism involving mitochondria.
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Affiliation(s)
- Paloma García-Casas
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
| | - Jessica Arias-Del-Val
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
| | - Pilar Alvarez-Illera
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
| | - Aneta Wojnicz
- Department of Clinical Pharmacology, Instituto Teófilo Hernando, Instituto de Investigación Sanitaria la Princesa (IP), Hospital Universitario de la Princesa, Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Cristobal de Los Ríos
- Department of Clinical Pharmacology, Instituto Teófilo Hernando, Instituto de Investigación Sanitaria la Princesa (IP), Hospital Universitario de la Princesa, Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Rosalba I Fonteriz
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
| | - Mayte Montero
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
| | - Javier Alvarez
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid and CSIC, Valladolid, Spain
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Arias-Del-Val J, Santo-Domingo J, García-Casas P, Alvarez-Illera P, Núñez Galindo A, Wiederkehr A, Fonteriz RI, Montero M, Alvarez J. Regulation of inositol 1,4,5-trisphosphate-induced Ca 2+ release from the endoplasmic reticulum by AMP-activated kinase modulators. Cell Calcium 2018; 77:68-76. [PMID: 30557841 DOI: 10.1016/j.ceca.2018.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/10/2018] [Accepted: 12/10/2018] [Indexed: 01/28/2023]
Abstract
The 5' AMP-activated protein kinase (AMPK) is a nutrient-sensitive kinase that plays a key role in the control of cellular energy metabolism. We have explored here the relationship between AMPK and Ca2+ signaling by looking at the effect of an AMPK activator (A769662) and an AMPK inhibitor (dorsomorphin) on histamine-induced Ca2+-release from the endoplasmic reticulum (ER) in HeLa cells. Our data show that incubation with A769662 (EC50 = 29 μM) inhibited histamine-induced Ca2+-release from the ER in intact cells, as well as inositol-1,4,5-trisphosphate (IP3)-induced Ca2+ release in permeabilized cells. On the contrary, dorsomorphin (EC50 = 0.4 μM) activated both histamine and IP3-induced Ca2+-release and reversed the effect of A769662. These results suggest a direct effect of AMPK regulation on IP3 receptor (IP3R) function. A phosphoproteomic study did not reveal changes in IP3R phosphorylation, but showed significant changes in phosphorylation of proteins placed upstream in the IP3R interactome and in several proteins related with Ca2+ metabolism, which could be candidates to mediate the effects observed. In conclusion, our data suggest that AMPK negatively regulates IP3R. This effect constitutes a novel and very important link between Ca2+ signaling and the AMPK pathway.
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Affiliation(s)
- Jessica Arias-Del-Val
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain
| | - Jaime Santo-Domingo
- Mitochondrial Function and Proteomics, Nestle Institute of Health Science S.A. EPFL Innovation Park, 1015, Lausanne, Switzerland
| | - Paloma García-Casas
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain
| | - Pilar Alvarez-Illera
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain
| | - Antonio Núñez Galindo
- Mitochondrial Function and Proteomics, Nestle Institute of Health Science S.A. EPFL Innovation Park, 1015, Lausanne, Switzerland
| | - Andreas Wiederkehr
- Mitochondrial Function and Proteomics, Nestle Institute of Health Science S.A. EPFL Innovation Park, 1015, Lausanne, Switzerland
| | - Rosalba I Fonteriz
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain
| | - Mayte Montero
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain
| | - Javier Alvarez
- Institute of Biology and Molecular Genetics (IBGM), Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid and CSIC, Ramón y Cajal, 7, E-47005 Valladolid, Spain.
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García-Casas P, Arias-Del-Val J, Alvarez-Illera P, Fonteriz RI, Montero M, Alvarez J. Inhibition of Sarco-Endoplasmic Reticulum Ca 2+ ATPase Extends the Lifespan in C. elegans Worms. Front Pharmacol 2018; 9:669. [PMID: 29988547 PMCID: PMC6026643 DOI: 10.3389/fphar.2018.00669] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/04/2018] [Indexed: 12/20/2022] Open
Abstract
The sarco-endoplasmic reticulum Ca2+-ATPase (SERCA) refills the endoplasmic reticulum (ER) with Ca2+ up to the millimolar range and is therefore the main controller of the ER [Ca2+] level ([Ca2+]ER), which has a key role in the modulation of cytosolic Ca2+ signaling and ER-mitochondria Ca2+ transfer. Given that both cytosolic and mitochondrial Ca2+ dynamics strongly interplay with energy metabolism and nutrient-sensitive pathways, both of them involved in the aging process, we have studied the effect of SERCA inhibitors on lifespan in C. elegans. We have used thapsigargin and 2,5-Di-tert-butylhydroquinone (2,5-BHQ) as SERCA inhibitors, and the inactive analog 2,6-Di-tert-butylhydroquinone (2,6-BHQ) as a control for 2,5-BHQ. Every drug was administered to the worms either directly in the agar or via an inclusion compound with γ-cyclodextrin. The results show that 2,6-BHQ produced a small but significant increase in survival, perhaps because of its antioxidant properties. However, 2,5-BHQ produced in all the conditions a much higher increase in lifespan, and the potent and specific SERCA inhibitor thapsigargin also extended the lifespan. The effects of 2,5-BHQ and thapsigargin had a bell-shaped concentration dependence, with a maximum effect at a certain dose and smaller or even toxic effects at higher concentrations. Our data show therefore that submaximal inhibition of SERCA pumps has a pro-longevity effect, suggesting that Ca2+ signaling plays an important role in the aging process and that it could be a promising novel target pathway to act on aging.
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Affiliation(s)
- Paloma García-Casas
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
| | - Jessica Arias-Del-Val
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
| | - Pilar Alvarez-Illera
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
| | - Rosalba I Fonteriz
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
| | - Mayte Montero
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
| | - Javier Alvarez
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics (IBGM), Faculty of Medicine, University of Valladolid - CSIC, Valladolid, Spain
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Alvarez-Illera P, García-Casas P, Arias-Del-Val J, Fonteriz RI, Alvarez J, Montero M. Pharynx mitochondrial [Ca 2+] dynamics in live C. elegans worms during aging. Oncotarget 2017; 8:55889-55900. [PMID: 28915560 PMCID: PMC5593531 DOI: 10.18632/oncotarget.18600] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 06/12/2017] [Indexed: 11/25/2022] Open
Abstract
Progressive decline in mitochondrial function is generally considered one of the hallmarks of aging. We have expressed a Ca2+ sensor in the mitochondrial matrix of C. elegans pharynx cells and we have measured for the first time mitochondrial [Ca2+] ([Ca2+]M) dynamics in the pharynx of live C. elegans worms during aging. Our results show that worms stimulated with serotonin display a pharynx [Ca2+]M oscillatory kinetics that includes both high frequency oscillations (up to about 1Hz) and very prolonged “square-wave” [Ca2+]M increases, indicative of energy depletion of the pharynx cells. Mitochondrial [Ca2+] is therefore able to follow “beat-to-beat” the fast oscillations of cytosolic [Ca2+]. The fast [Ca2+]M oscillations kept steady frequency values during the whole worm life, from 2 to 12 days old, but the height and width of the peaks was progressively reduced. [Ca2+]M oscillations were also present with similar kinetics in respiratory chain complex I nuo-6 mutant worms, although with smaller height and frequency than in the controls, and larger width. In summary, Ca2+ fluxes in and out of the mitochondria are relatively well preserved during the C. elegans life, but there is a clear progressive decrease in their magnitude during aging. Moreover, mitochondrial Ca2+ fluxes were smaller in nuo-6 mutants with respect to the controls at every age and decreased similarly during aging.
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Affiliation(s)
- Pilar Alvarez-Illera
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
| | - Paloma García-Casas
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
| | - Jessica Arias-Del-Val
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
| | - Rosalba I Fonteriz
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
| | - Javier Alvarez
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
| | - Mayte Montero
- Department of Biochemistry and Molecular Biology and Physiology, Institute of Biology and Molecular Genetics, Faculty of Medicine, University of Valladolid and CSIC, Valladolid, Spain
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Fonteriz R, Matesanz-Isabel J, Arias-Del-Val J, Alvarez-Illera P, Montero M, Alvarez J. Modulation of Calcium Entry by Mitochondria. Adv Exp Med Biol 2016; 898:405-21. [PMID: 27161238 DOI: 10.1007/978-3-319-26974-0_17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The role of mitochondria in intracellular Ca(2+) signaling relies mainly in its capacity to take up Ca(2+) from the cytosol and thus modulate the cytosolic [Ca(2+)]. Because of the low Ca(2+)-affinity of the mitochondrial Ca(2+)-uptake system, this organelle appears specially adapted to take up Ca(2+) from local high-Ca(2+) microdomains and not from the bulk cytosol. Mitochondria would then act as local Ca(2+) buffers in cellular regions where high-Ca(2+) microdomains form, that is, mainly close to the cytosolic mouth of Ca(2+) channels, both in the plasma membrane and in the endoplasmic reticulum (ER). One of the first targets proposed already in the 1990s to be regulated in this way by mitochondria were the store-operated Ca(2+) channels (SOCE). Mitochondria, by taking up Ca(2+) from the region around the cytosolic mouth of the SOCE channels, would prevent its slow Ca(2+)-dependent inactivation, thus keeping them active for longer. Since then, evidence for this mechanism has accumulated mainly in immunitary cells, where mitochondria actually move towards the immune synapse during T cell activation. However, in many other cell types the available data indicate that the close apposition between plasma and ER membranes occurring during SOCE activation precludes mitochondria from getting close to the Ca(2+)-entry sites. Alternative pathways for mitochondrial modulation of SOCE, both Ca(2+)-dependent and Ca(2+)-independent, have also been proposed, but further work will be required to elucidate the actual mechanisms at work. Hopefully, the recent knowledge of the molecular nature of the mitochondrial Ca(2+) uniporter will allow soon more precise studies on this matter.
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Affiliation(s)
- Rosalba Fonteriz
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain
| | - Jessica Matesanz-Isabel
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain
| | - Jessica Arias-Del-Val
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain
| | - Pilar Alvarez-Illera
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain
| | - Mayte Montero
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain
| | - Javier Alvarez
- Departamento de Bioquímica y Biología Molecular y Fisiología, Instituto de Biología y Genética Molecular (IBGM), Facultad de Medicina, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Ramon y Cajal 7, 47005, Valladolid, Spain.
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