TY - JOUR
T1 - Nucleocytosolic depletion of the energy metabolite acetyl-coenzyme A stimulates autophagy and prolongs lifespan
AU - Eisenberg, Tobias
AU - Schroeder, Sabrina
AU - Andryushkova, Aleksandra
AU - Pendl, Tobias
AU - Küttner, Victoria
AU - Bhukel, Anuradha
AU - Mariño, Guillermo
AU - Pietrocola, Federico
AU - Harger, Alexandra
AU - Zimmermann, Andreas
AU - Moustafa, Tarek
AU - Sprenger, Adrian
AU - Jany, Evelyne
AU - Büttner, Sabrina
AU - Carmona-Gutierrez, Didac
AU - Ruckenstuhl, Christoph
AU - Ring, Julia
AU - Reichelt, Wieland
AU - Schimmel, Katharina
AU - Leeb, Tina
AU - Moser, Claudia
AU - Schatz, Stefanie
AU - Kamolz, Lars Peter
AU - Magnes, Christoph
AU - Sinner, Frank
AU - Sedej, Simon
AU - Fröhlich, Kai Uwe
AU - Juhasz, Gabor
AU - Pieber, Thomas R.
AU - Dengjel, Jörn
AU - Sigrist, Stephan J.
AU - Kroemer, Guido
AU - Madeo, Frank
N1 - Funding Information:
We thank Drs. Jef D. Boeke, Daniel Klionsky, and Günther Daum for providing antibodies. We are also grateful for strains provided by Dr. Boeke. We thank Harald Hofbauer for support with quantitative PCR; and Lydia Opriessnig, Christian Pendl, and Birgit Michelitsch for assistance. This work was supported by the Austrian Science Fund FWF (grants T414-B09 and V235-B09 to S.B.; grants LIPOTOX, I1000, P23490-B12, and P24381-B20 to F.M.). T.E. is recipient of an APART fellowship of the Austrian Academy of Sciences at the Institute of Molecular Biosciences, University of Graz. This work was also supported by grants to G.K. from the Ligue Contre le Cancer (Équipe Labelisée), Agence National de la Recherche (ANR), Association Pour la Recherche sur le Cancer (ARC), Cancéropôle Ile-de-France; AXA Chair for Longevity Research, Institut National du Cancer (INCa), Fondation Bettencourt-Schueller, Fondation de France, Fondation pour la Recherche Médicale (FRM), the European Commission (ArtForce), the European Research Council (ERC), the LabEx Immuno-Oncology, the SIRIC Stratified Oncology Cell DNA Repair and Tumor Immune Elimination (SOCRATE), the SIRIC Cancer Research and Personalized Medicine (CARPEM), and the Paris Alliance of Cancer Research Institutes (PACRI).
PY - 2014/3/4
Y1 - 2014/3/4
N2 - Healthy aging depends on removal of damaged cellular material that is in part mediated by autophagy. The nutritional status of cells affects both aging and autophagy through as-yet-elusive metabolic circuitries. Here, we show that nucleocytosolic acetyl-coenzyme A (AcCoA) production is a metabolic repressor of autophagy during aging in yeast. Blocking the mitochondrial route to AcCoA by deletion of the CoA-transferase ACH1 caused cytosolic accumulation of the AcCoA precursor acetate. This led to hyperactivation of nucleocytosolic AcCoA-synthetase Acs2p, triggering histone acetylation, repression of autophagy genes, and an age-dependent defect in autophagic flux, culminating in a reduced lifespan. Inhibition of nutrient signaling failed to restore, while simultaneous knockdown of ACS2 reinstated, autophagy and survival of ach1 mutant. Brain-specific knockdown of Drosophila AcCoA synthetase was sufficient to enhance autophagic protein clearance and prolong lifespan. Since AcCoA integrates various nutrition pathways, our findings may explain diet-dependent lifespan and autophagy regulation.
AB - Healthy aging depends on removal of damaged cellular material that is in part mediated by autophagy. The nutritional status of cells affects both aging and autophagy through as-yet-elusive metabolic circuitries. Here, we show that nucleocytosolic acetyl-coenzyme A (AcCoA) production is a metabolic repressor of autophagy during aging in yeast. Blocking the mitochondrial route to AcCoA by deletion of the CoA-transferase ACH1 caused cytosolic accumulation of the AcCoA precursor acetate. This led to hyperactivation of nucleocytosolic AcCoA-synthetase Acs2p, triggering histone acetylation, repression of autophagy genes, and an age-dependent defect in autophagic flux, culminating in a reduced lifespan. Inhibition of nutrient signaling failed to restore, while simultaneous knockdown of ACS2 reinstated, autophagy and survival of ach1 mutant. Brain-specific knockdown of Drosophila AcCoA synthetase was sufficient to enhance autophagic protein clearance and prolong lifespan. Since AcCoA integrates various nutrition pathways, our findings may explain diet-dependent lifespan and autophagy regulation.
UR - http://www.scopus.com/inward/record.url?scp=84895755121&partnerID=8YFLogxK
U2 - 10.1016/j.cmet.2014.02.010
DO - 10.1016/j.cmet.2014.02.010
M3 - Article
C2 - 24606900
AN - SCOPUS:84895755121
SN - 1550-4131
VL - 19
SP - 431
EP - 444
JO - Cell Metabolism
JF - Cell Metabolism
IS - 3
ER -