Cited by 160Genetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and TherapyMitochondrial Function and Pathology

The RNA-Binding Protein PUM2 Impairs Mitochondrial Dynamics and Mitophagy During Aging

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D’Amico, Davide, Mottis, Adrienne, Potenza, Francesca, Sorrentino, Vincenzo, Li, Hao, Romani, Mario, Lemos, Vera, Schoonjans, Kristina +4 more·2019·Molecular Cell

Abstract

Little information is available about how post-transcriptional mechanisms regulate the aging process. Here, we show that the RNA-binding protein Pumilio2 (PUM2), which is a translation repressor, is induced upon aging and acts as a negative regulator of lifespan and mitochondrial homeostasis. Multi-omics and cross-species analyses of PUM2 function show that it inhibits the translation of the mRNA encoding for the mitochondrial fission factor (Mff), thereby impairing mitochondrial fission and mitophagy. This mechanism is conserved in C. elegans by the PUM2 ortholog PUF-8. puf-8 knock-down in old nematodes and Pum2 CRISPR/Cas9-mediated knockout in the muscles of elderly mice enhances mitochondrial fission and mitophagy in both models, hence improving mitochondrial quality control and tissue homeostasis. Our data reveal how a PUM2-mediated layer of post-transcriptional regulation links altered Mff translation to mitochondrial dynamics and mitophagy, thereby mediating age-related mitochondrial dysfunctions.

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Authors
D’Amico, D., Mottis, A., Potenza, F., Sorrentino, V., Li, H., Romani, M., Lemos, V., Schoonjans, K., Zamboni, N., Knott, G., Schneider, B. L., & Auwerx, J.
Affiliations
  • École Polytechnique Fédérale de Lausanne (CH)
  • ETH Zurich (CH)
Corresponding author
Auwerx, Johan
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2019-02
Volume
73
Issue
4
Pages
775-787.e10
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2908940327
Cited by
159
References
79
Citations by year
2026: 12 · 2025: 18 · 2024: 22 · 2023: 31 · 2022: 17 · 2021: 25 · 2020: 21 · 2019: 12
FWCI
6.82
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (acceptedVersion, cc-by)
  • PubMed Central (acceptedVersion)
  • National University of Singapore (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • Associazione Italiana per la Ricerca sul Cancro
  • Marie Curie Actions
  • EPFL Fellows
  • Marie Skłodowska-Curie Horizon 2020 (665667)
  • EPFL
  • NIH (R01AG043930)
  • Systems X (SySX.ch 2013/153)
  • Velux Stiftung (1019)
  • FSRMM
  • SNSF (310030B_160318, 31003A_179435)
  • Fondation Levaillant
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
PUM2
MeSH terms
Age Factors, Aging, Animals, Female, HeLa Cells, Humans, Male, Membrane Proteins, Mice, Inbred C57BL, Mitochondria, Mitochondria, Muscle, Signal Transduction, Up-Regulation, RNA-Binding Proteins, Caenorhabditis elegans, Muscle, Skeletal, Mitochondrial Proteins, Caenorhabditis elegans Proteins, HEK293 Cells, Mitochondrial Dynamics, Mitophagy

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