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Ruckenstuhl C, Netzberger C, Entfellner I, Carmona-Gutierrez D, Kickenweiz T, Stekovic S, Gleixner C, Schmid C, Klug L, Hajnal I, Sorgo AG, Eisenberg T, Büttner S, Marin O G, Koziel R, Magnes C, Sinner F, Pieber TR, Jansen-Dürr P, Fröhlich KU, Kroemer G, Madeo F. Autophagy extends lifespan via vacuolar acidification. Microb Cell 2014; 1:160-162. [PMID: 28357240 PMCID: PMC5354602 DOI: 10.15698/mic2014.05.147] [Citation(s) in RCA: 12] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Methionine restriction (MetR) is one of the rare regimes that prolongs lifespan across species barriers. Using a yeast model, we recently demonstrated that this lifespan extension is promoted by autophagy, which in turn requires vacuolar acidification. Our study is the first to place autophagy as one of the major players required for MetR-mediated longevity. In addition, our work identifies vacuolar acidification as a key downstream element of autophagy induction under MetR, and possibly after rapamycin treatment. Unlike other amino acids, methionine plays pleiotropic roles in many metabolism-relevant pathways. For instance, methionine (i) is the N-terminal amino acid of every newly translated protein; (ii) acts as the central donor of methyl groups through S-adenosyl methionine (SAM) during methylation reactions of proteins, DNA or RNA; and (iii) provides the sulfhydryl groups for FeS-cluster formation and redox detoxification via transsulfuration to cysteine. Intriguingly, MetR causes lifespan extension, both in yeast and in rodents. We could show that in Saccharomyces cerevisiae, chronological lifespan (CLS) is increased in two specific methionine-auxotrophic strains (namely Δmet2 and Δmet15).
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Affiliation(s)
| | | | - Iryna Entfellner
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | | | - Thomas Kickenweiz
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Slaven Stekovic
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Christina Gleixner
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Christian Schmid
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Lisa Klug
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Ivan Hajnal
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Alice G Sorgo
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Tobias Eisenberg
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Sabrina Büttner
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Guillermo Marin O
- INSERM, U848, F-94805 Villejuif, France. ; Institut Gustave Roussy, F-94805 Villejuif, France.; Université Paris Sud, Paris 11, F-94805 Villejuif, France
| | - Rafael Koziel
- Institute for Biomedical Aging Research (IBA), Austrian Academy of Sciences, 6020 Innsbruck, Austria
| | - Christoph Magnes
- HEALTH-Institute for Biomedicine and Health Sciences, Joanneum Research Forschungsgesellschaft m.b.H., 8010 Graz, Austria
| | - Frank Sinner
- HEALTH-Institute for Biomedicine and Health Sciences, Joanneum Research Forschungsgesellschaft m.b.H., 8010 Graz, Austria.; Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria
| | - Thomas R Pieber
- HEALTH-Institute for Biomedicine and Health Sciences, Joanneum Research Forschungsgesellschaft m.b.H., 8010 Graz, Austria.; Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria
| | - Pidder Jansen-Dürr
- Institute for Biomedical Aging Research (IBA), Austrian Academy of Sciences, 6020 Innsbruck, Austria
| | - Kai-Uwe Fröhlich
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Guido Kroemer
- INSERM, U848, F-94805 Villejuif, France. ; Institut Gustave Roussy, F-94805 Villejuif, France.; Metabolomics Platform, Institut Gustave Roussy, F-94805 Villejuif, France.; Centre de Recherche des Cordeliers, F-75005 Paris, France.; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, F-75908 Paris, France.; Université Paris Descartes, Paris 5, F-75270 Paris, France
| | - Frank Madeo
- Institute for Molecular Biosciences, University of Graz, 8010 Graz, Austria
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Ruckenstuhl C, Netzberger C, Entfellner I, Carmona-Gutierrez D, Kickenweiz T, Stekovic S, Gleixner C, Schmid C, Klug L, Sorgo AG, Eisenberg T, Büttner S, Mariño G, Koziel R, Jansen-Dürr P, Fröhlich KU, Kroemer G, Madeo F. Lifespan extension by methionine restriction requires autophagy-dependent vacuolar acidification. PLoS Genet 2014; 10:e1004347. [PMID: 24785424 PMCID: PMC4006742 DOI: 10.1371/journal.pgen.1004347] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 03/19/2014] [Indexed: 11/19/2022] Open
Abstract
Reduced supply of the amino acid methionine increases longevity across species through an as yet elusive mechanism. Here, we report that methionine restriction (MetR) extends yeast chronological lifespan in an autophagy-dependent manner. Single deletion of several genes essential for autophagy (ATG5, ATG7 or ATG8) fully abolished the longevity-enhancing capacity of MetR. While pharmacological or genetic inhibition of TOR1 increased lifespan in methionine-prototroph yeast, TOR1 suppression failed to extend the longevity of methionine-restricted yeast cells. Notably, vacuole-acidity was specifically enhanced by MetR, a phenotype that essentially required autophagy. Overexpression of vacuolar ATPase components (Vma1p or Vph2p) suffices to increase chronological lifespan of methionine-prototrophic yeast. In contrast, lifespan extension upon MetR was prevented by inhibition of vacuolar acidity upon disruption of the vacuolar ATPase. In conclusion, autophagy promotes lifespan extension upon MetR and requires the subsequent stimulation of vacuolar acidification, while it is epistatic to the equally autophagy-dependent anti-aging pathway triggered by TOR1 inhibition or deletion.
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Affiliation(s)
| | | | - Iryna Entfellner
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | | | - Thomas Kickenweiz
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Slaven Stekovic
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | | | - Christian Schmid
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Lisa Klug
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Alice G. Sorgo
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Tobias Eisenberg
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Sabrina Büttner
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Guillermo Mariño
- INSERM, U848, Villejuif, France
- Institut Gustave Roussy, Villejuif, France
- Université Paris Sud, Paris 11, Villejuif, France
| | - Rafal Koziel
- Institute for Biomedical Aging Research (IBA), Austrian Academy of Sciences, Innsbruck, Austria
| | - Pidder Jansen-Dürr
- Institute for Biomedical Aging Research (IBA), Austrian Academy of Sciences, Innsbruck, Austria
| | - Kai-Uwe Fröhlich
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
| | - Guido Kroemer
- INSERM, U848, Villejuif, France
- Institut Gustave Roussy, Villejuif, France
- Metabolomics Platform, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Paris, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
- Université Paris Descartes, Paris 5, Paris, France
| | - Frank Madeo
- Institute for Molecular Biosciences, University of Graz, Graz, Austria
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