Cited by 430Genetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and TherapyMetabolism, Diabetes, and Cancer

Impaired insulin/IGF1 signaling extends life span by promoting mitochondrial L-proline catabolism to induce a transient ROS signal

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Zarse, Kim, Schmeisser, Sebastian, Groth, Marco, Priebe, Steffen, Beuster, Gregor, Kuhlow, Doreen, Guthke, Reinhard, Platzer, Matthias +2 more·2012·Cell Metabolism

Abstract

Impaired insulin and IGF-1 signaling (iIIS) in C. elegans daf-2 mutants extends life span more than 2-fold. Constitutively, iIIS increases mitochondrial activity and reduces reactive oxygen species (ROS) levels. By contrast, acute impairment of daf-2 in adult C. elegans reduces glucose uptake and transiently increases ROS. Consistent with the concept of mitohormesis, this ROS signal causes an adaptive response by inducing ROS defense enzymes (SOD, catalase), culminating in ultimately reduced ROS levels despite increased mitochondrial activity. Inhibition of this ROS signal by antioxidants reduces iIIS-mediated longevity by up to 60%. Induction of the ROS signal requires AAK-2 (AMPK), while PMK-1 (p38) and SKN-1 (NRF-2) are needed for the retrograde response. IIIS upregulates mitochondrial L-proline catabolism, and impairment of the latter impairs the life span-extending capacity of iIIS while L-proline supplementation extends C. elegans life span. Taken together, iIIS promotes L-proline metabolism to generate a ROS signal for the adaptive induction of endogenous stress defense to extend life span.

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Crossref · 10.1016/j.cmet.2012.02.013

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  • Impaired insulin/IGF-1 signaling extends lifespan by 2-fold in C. elegans daf-2 mutants by promoting L-proline catabolism and endogenous stress defense via a transient ROS signal.

    “Impaired insulin/IGF-1 signaling (IIS) extends lifespan by 2-fold in C. elegans daf-2 mutants, by promoting L-proline catabolism and endogenous stress defense response via a transient ROS signal”

    From Benefits of Metformin in Attenuating the Hallmarks of Aging (2020) · cites this paper as Zarse et al. 2012

  • Increased ROS levels induced antioxidant enzyme expression, followed by a decrease in ROS levels.

    “In addition, increased ROS levels induced expression of antioxidant enzymes, followed by a decrease in ROS levels20.”

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Authors
Zarse, K., Schmeisser, S., Groth, M., Priebe, S., Beuster, G., Kuhlow, D., Guthke, R., Platzer, M., Kahn, C. R., & Ristow, M.
Affiliations
  • Joslin Diabetes Center (US)
  • Leibniz Institute on Aging - Fritz Lipmann Institute (FLI) (DE)
  • Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie e. V. - Hans-Knöll-Institut (HKI) (DE)
  • Friedrich Schiller University Jena (DE)
  • German Institute of Human Nutrition (DE)
Corresponding author
Ristow, Michael
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2012-04
Volume
15
Issue
4
Pages
451-465
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2027977649
Cited by
430
References
73
Citations by year
2026: 13 · 2025: 20 · 2024: 28 · 2023: 17 · 2022: 28 · 2021: 36 · 2020: 26 · 2019: 31 · 2018: 27 · 2017: 31 · 2016: 40 · 2015: 41 · 2014: 50 · 2013: 28 · 2012: 12
FWCI
13.58
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Center for Research Resources
  • University of Minnesota
  • Deutsche Forschungsgemeinschaft (RI 1976/3-1)
  • Bundesministerium für Bildung und Forschung (0315581, DK31036, DK33201)
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 › Metabolism, Diabetes, and Cancer
Keywords
insulin/IGF-1 signaling, lifespan extension, reactive oxygen species, mitohormesis, daf-2, AMPK, p38 MAPK, SKN-1, antioxidant defense, antioxidants, glucose uptake, Caenorhabditis elegans, longevity
MeSH terms
Animals, Antioxidants, Glucose, Insulin, Insulin-Like Growth Factor I, Longevity, Mitochondria, Proline, Stress, Physiological, Signal Transduction, Caenorhabditis elegans, Reactive Oxygen Species, Gene Expression Profiling, Models, Animal, Caenorhabditis elegans Proteins, Mice, Transcriptome

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