Cited by 575Sirtuins and Resveratrol in MedicineDNA Repair MechanismsGenetics, Aging, and Longevity in Model Organisms

NAD + Replenishment Improves Lifespan and Healthspan in Ataxia Telangiectasia Models via Mitophagy and DNA Repair

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Fang, Evandro Fei, Kassahun, Henok, Croteau, Deborah L., Scheibye-Knudsen, Morten, Marosi, Krisztina, Lu, Huiming, Shamanna, Raghavendra A., Kalyanasundaram, Sumana +14 more·2016·Cell Metabolism

Abstract

Ataxia telangiectasia (A-T) is a rare autosomal recessive disease characterized by progressive neurodegeneration and cerebellar ataxia. A-T is causally linked to defects in ATM, a master regulator of the response to and repair of DNA double-strand breaks. The molecular basis of cerebellar atrophy and neurodegeneration in A-T patients is unclear. Here we report and examine the significance of increased PARylation, low NAD+, and mitochondrial dysfunction in ATM-deficient neurons, mice, and worms. Treatments that replenish intracellular NAD+ reduce the severity of A-T neuropathology, normalize neuromuscular function, delay memory loss, and extend lifespan in both animal models. Mechanistically, treatments that increase intracellular NAD+ also stimulate neuronal DNA repair and improve mitochondrial quality via mitophagy. This work links two major theories on aging, DNA damage accumulation, and mitochondrial dysfunction through nuclear DNA damage-induced nuclear-mitochondrial signaling, and demonstrates that they are important pathophysiological determinants in premature aging of A-T, pointing to therapeutic interventions.

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Crossref · 10.1016/j.cmet.2016.09.004

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  • NAD+ supplementation mitigates premature aging phenotypes associated with defects in DNA repair by restoring mitochondrial function and mitophagy.

    “Indeed, NAD+ supplementation mitigates premature aging phenotypes associated with defects in DNA repair by restoring mitochondrial function and mitophagy (72, 73).”

    From Connecting aging biology and inflammation in the omics era (2022) · cites this paper as [73]

  • NAD+ depletion is reported in several models of accelerated ageing that exhibit neurodegeneration, as well as in neurodegenerative diseases including Alzheimer disease, Parkinson disease and amyotrophic lateral sclerosis.

    “NAD+ depletion is reported in several models of accelerated ageing which exhibit neurodegeneration33,134,135, as well as in neuro-degenerative diseases, including Alzheimer disease136, Parkinson disease137,138 and amyotrophic lateral sclerosis (ALS)139.”
  • NAD+ replenishment using NR and/or NMN delays progeroid phenotype and extends lifespan in C. elegans models of xeroderma pigmentosum group A, ataxia telangiectasia and Cockayne syndrome, and in a worm model of Werner syndrome.

    “NAD+ replenishment, using NR and/or NMN, has also been effective in delaying progeroid phenotype and extending lifespan in relevant C. elegans models of xeroderma pigmentosum group A, ataxia telangiectasia and Cockayne syndrome33,134,135 and in a worm model of Werner syndrome (a progeroid disease)196.”
  • NMN treatment significantly increased NAD+ levels and maximum lifespan in a mouse model of ataxia telangiectasia.

    “NMN treatment significantly increased NAD+ levels and the maximum lifespan also in a mouse model of ataxia telangiectasia135.”
  • In wild-type yeast and C. elegans, low micromolar concentrations of NR extend lifespan in a sirtuin-dependent manner.

    “In both wild-type yeast and C. elegans, low (micromolar) concentrations of NR extend lifespan in a sirtuin-dependent manner135,189,190.”

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  1. Verdin E 2015b NAD+ in aging, metabolism, and neurodegeneration Science In press 26785480

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Authors
Fang, E. F., Kassahun, H., Croteau, D. L., Scheibye-Knudsen, M., Marosi, K., Lu, H., Shamanna, R. A., Kalyanasundaram, S., Bollineni, R. C., Wilson, M. A., Iser, W. B., Wollman, B. N., Morevati, M., Li, J., Kerr, J. S., Lu, Q., Waltz, T. B., Tian, J., Sinclair, D. A., Mattson, M. P., Nilsen, H., & Bohr, V. A.
Affiliations
  • National Institute on Aging (US)
  • University of Oslo (NO)
  • National Institutes of Health (US)
  • Oslo University Hospital (NO)
  • University of Copenhagen (DK)
  • Harvard University (US)
Corresponding author
Bohr, Vilhelm A.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2016-10
Volume
24
Issue
4
Pages
566-581
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2530753724
Cited by
575
References
46
Citations by year
2026: 46 · 2025: 57 · 2024: 69 · 2023: 53 · 2022: 77 · 2021: 85 · 2020: 67 · 2019: 51 · 2018: 33 · 2017: 33 · 2016: 1 · 2015: 1
FWCI
22.50
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
National Institute on Aging (R37AG028730)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
ataxia telangiectasia, mitophagy, DNA repair, ATM, poly(ADP-ribosyl)ation, mitochondrial dysfunction, premature aging, lifespan extension, healthspan, neurodegeneration, cerebellar atrophy, DNA double-strand break repair, DNA damage accumulation
MeSH terms
Animals, Ataxia Telangiectasia, Behavior, Animal, Cells, Cultured, Disease Models, Animal, DNA Repair, Health, Homeostasis, Longevity, NAD, Neurons, Phenotype, Phthalazines, Piperazines, Signal Transduction, Caenorhabditis elegans, Rats, Sprague-Dawley, Proteomics, Mice, Metabolomics, Gene Knockdown Techniques, Sirtuin 1, Mitophagy, Ataxia Telangiectasia Mutated Proteins

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