Cited by 1,953Autophagy in Disease and TherapyMuscle Physiology and DisordersFOXO transcription factor regulation

FoxO3 Controls Autophagy in Skeletal Muscle In Vivo

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Mammucari, Cristina, Milan, Giulia, Romanello, Vanina, Masiero, Eva, Rudolf, Ruediger, Del Piccolo, Paola, Burden, Steven J., Di Lisi, Raffaella +5 more·2007·Cell Metabolism

Abstract

Autophagy allows cell survival during starvation through the bulk degradation of proteins and organelles by lysosomal enzymes. However, the mechanisms responsible for the induction and regulation of the autophagy program are poorly understood. Here we show that the FoxO3 transcription factor, which plays a critical role in muscle atrophy, is necessary and sufficient for the induction of autophagy in skeletal muscle in vivo. Akt/PKB activation blocks FoxO3 activation and autophagy, and this effect is not prevented by rapamycin. FoxO3 controls the transcription of autophagy-related genes, including LC3 and Bnip3, and Bnip3 appears to mediate the effect of FoxO3 on autophagy. This effect is not prevented by proteasome inhibitors. Thus, FoxO3 controls the two major systems of protein breakdown in skeletal muscle, the ubiquitin-proteasomal and autophagic/lysosomal pathways, independently. These findings point to FoxO3 and Bnip3 as potential therapeutic targets in muscle wasting disorders and other degenerative and neoplastic diseases in which autophagy is involved.

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Crossref · 10.1016/j.cmet.2007.11.001

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Authors
Mammucari, C., Milan, G., Romanello, V., Masiero, E., Rudolf, R., Del Piccolo, P., Burden, S. J., Di Lisi, R., Sandri, C., Zhao, J., Goldberg, A. L., Schiaffino, S., & Sandri, M.
Affiliations
  • University of Padua (IT)
  • Veneto Institute of Molecular Medicine (IT)
  • New York University (US)
  • Harvard University (US)
Corresponding author
Sandri, Marco
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2007-12
Volume
6
Issue
6
Pages
458-471
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2025192214
Cited by
1,953
References
42
Citations by year
2026: 54 · 2025: 76 · 2024: 88 · 2023: 82 · 2022: 114 · 2021: 127 · 2020: 111 · 2019: 128 · 2018: 119 · 2017: 127 · 2016: 123 · 2015: 124 · 2014: 123 · 2013: 142 · 2012: 118
FWCI
47.27
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (NS27963, R01NS027963)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR055255, R01AR055027)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › FOXO transcription factor regulation
Keywords
FOXO3, autophagy, skeletal muscle, Akt signaling, BNIP3, LC3, muscle atrophy, protein degradation, transcriptional regulation, rapamycin
MeSH terms
Forkhead Box Protein O3, Animals, Autophagy, Gene Expression Regulation, Lysosomes, Membrane Proteins, Mice, Transgenic, Microtubule-Associated Proteins, Models, Biological, Muscular Atrophy, Protein Kinases, Muscle, Skeletal, Mitochondrial Proteins, Ubiquitin, RNA Interference, Proteasome Endopeptidase Complex, Proto-Oncogene Proteins c-akt, Mice, Forkhead Transcription Factors, TOR Serine-Threonine Kinases

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