Cited by 630Alzheimer's disease research and treatmentsMitochondrial Function and PathologyAutophagy in Disease and Therapy

Enhancing mitochondrial proteostasis reduces amyloid-β proteotoxicity

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Sorrentino, Vincenzo, Romani, Mario, Mouchiroud, Laurent, Beck, John S., Zhang, Hongbo, D’Amico, Davide, Moullan, Norman, Potenza, Francesca +4 more·2017·Nature

Abstract

Alzheimer's disease is a common and devastating disease characterized by aggregation of the amyloid-β peptide. However, we know relatively little about the underlying molecular mechanisms or how to treat patients with Alzheimer's disease. Here we provide bioinformatic and experimental evidence of a conserved mitochondrial stress response signature present in diseases involving amyloid-β proteotoxicity in human, mouse and Caenorhabditis elegans that involves the mitochondrial unfolded protein response and mitophagy pathways. Using a worm model of amyloid-β proteotoxicity, GMC101, we recapitulated mitochondrial features and confirmed that the induction of this mitochondrial stress response was essential for the maintenance of mitochondrial proteostasis and health. Notably, increasing mitochondrial proteostasis by pharmacologically and genetically targeting mitochondrial translation and mitophagy increases the fitness and lifespan of GMC101 worms and reduces amyloid aggregation in cells, worms and in transgenic mouse models of Alzheimer's disease. Our data support the relevance of enhancing mitochondrial proteostasis to delay amyloid-β proteotoxic diseases, such as Alzheimer's disease.

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  • Accumulation of abnormal mitochondria without timely clearance indicates mitophagy dysfunction in Alzheimer's disease brain neurons.

    “Furthermore, the accumulation of abnormal mitochondria without timely clearance indicates mitophagy dysfunction within AD brain neurons (Du et al, 2010; Sorrentino et al, 2017).”

    From The mitochondrial long non-coding RNA lncMtloop regulates mitochondrial transcription and suppresses Alzheimer’s disease (2024) · cites this paper as Sorrentino et al, 2017

    The Abstract reports altered mitochondrial morphology in AD, and “Evidence for a mitochondrial stress signature in AD” reports changes in mitophagy-related transcripts in human cortex. Neither passage establishes that abnormal mitochondria accumulate because clearance is delayed or that mitophagy is dysfunctional specifically in AD brain neurons; the paper instead describes induction of mitophagy-related responses. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Enhanced mitochondrial proteostasis may reduce amyloid-β proteotoxicity.

    “Enhanced mitochondrial proteostasis may reduce amyloid-β proteotoxicity [73]”
  • Mitochondria from animal and post-mortem human brain tissues show age-dependent increases in functional heterogeneity, oxidative damage, reduced ETC function, disrupted membrane potential, impaired Ca2+ handling, and/or accumulation of dysfunctional mitochondria.

    “Mitochondria isolated from animal and post-mortem human brain tissues show an age-dependent rise in mitochondrial functional heterogeneity, increased oxidative damage, reduced function of the ETC, disrupted membrane potential, impaired Ca2+ handling, and/or an accumulation of dysfunctional mitochondria (Lin and Beal, 2006; Mattson et al., 2008; Sorrentino et al., 2017).”

    From NAD+ in Brain Aging and Neurodegenerative Disorders (2019) · cites this paper as Sorrentino et al., 2017

  • NAD+ precursors NR and NMN improve neuronal cell health, memory and cognitive function in rat and mouse models of Alzheimer disease, and show neuroprotective properties in Drosophila models of Parkinson disease and mouse models of ALS.

    “the NAD+ precursors NR and NMN improve neuronal cell health, memory and cognitive function in rat and mouse models of Alzheimer disease136,161,175–180, and also showed neuroprotective properties in Drosophila melanogaster models of Parkinson disease181,182 and in mouse models of ALS139.”

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Authors
Sorrentino, V., Romani, M., Mouchiroud, L., Beck, J. S., Zhang, H., D’Amico, D., Moullan, N., Potenza, F., Schmid, A. W., Rietsch, S., Counts, S. E., & Auwerx, J.
Affiliations
  • École Polytechnique Fédérale de Lausanne (CH)
  • Michigan State University (US)
Corresponding author
Auwerx, Johan
Venue
Nature
Published
2017-12
Volume
552
Issue
7684
Pages
187-193
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2774690079
Cited by
630
References
54
Citations by year
2026: 34 · 2025: 71 · 2024: 74 · 2023: 95 · 2022: 82 · 2021: 89 · 2020: 91 · 2019: 48 · 2018: 44 · 2017: 2
FWCI
37.45
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • National University of Singapore (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • National Science Foundation (P40 OD010440, P30 AG053760)
  • Velux Stiftung
  • École Polytechnique Fédérale de Lausanne (665667)
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (140780, 31003A)
  • Associazione Italiana per la Ricerca sul Cancro
  • National Institutes of Health (OD010440, AG053760, P40OD010440)
  • National Institute on Aging (P30AG053760, P01AG014449, R21AG053581, R01AG043930)
  • Office of Research Infrastructure Programs, National Institutes of Health (P40OD010440)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
Alzheimer's disease, amyloid-beta, mitochondrial proteostasis, mitochondrial stress response, mitochondrial unfolded protein response, mitophagy, mitochondrial translation, proteotoxic stress, protein aggregation, Caenorhabditis elegans, lifespan extension, transgenic mouse model
MeSH terms
Proteostasis, Alzheimer Disease, Animals, Disease Models, Animal, Homeostasis, Humans, Male, Memory, Mice, Transgenic, Mitochondria, NAD, Niacinamide, Oxidative Phosphorylation, Pyridinium Compounds, Protein Biosynthesis, Amyloid beta-Peptides, Caenorhabditis elegans, Mice, Unfolded Protein Response, Mitophagy, Protein Aggregation, Pathological

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