Cited by 409Genetics, Aging, and Longevity in Model OrganismsMitochondrial Function and PathologyNeurobiology and Insect Physiology Research

Extension of Drosophila Life Span by RNAi of the Mitochondrial Respiratory Chain

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Copeland, Jeffrey M., Cho, Jaehyoung, Lo, Thomas, Hur, Jae H., Bahadorani, Sepehr, Arabyan, Tagui, Rabie, Jason, Soh, Jennifer +1 more·2009·Current Biology

Abstract

Background Mitochondria have long been proposed to play an important role in the aging process. In the nematode Caenorhabditis elegans, genes important for mitochondrial electron transport chain (ETC) function stand out as a principal group of genes affecting life span. However, it has been suggested that this may be a peculiarity of nematode biology. In the present study, we have used an in vivo RNA interference (RNAi) strategy to inactivate ETC genes in Drosophila melanogaster and examine the impact on longevity.Results Here, we report that RNAi of five genes encoding components of mitochondrial respiratory complexes I, III, IV, and V leads to increased life span in flies. Long-lived flies with reduced expression of ETC genes do not consistently show reduced assembly of respiratory complexes or reduced ATP levels. In addition, extended longevity is not consistently correlated with reduced fertility or increased resistance to the free-radical generator paraquat. Targeted RNAi of two complex I genes in adult tissues or in neurons alone is sufficient to extend life span.Conclusions Our data suggest that the role of mitochondrial ETC function in modulating animal aging is evolutionarily conserved and might also operate in humans. Furthermore, our findings suggest that the longer life span of flies with reduced ETC gene expression cannot simply be attributed to reduced energy production leading to decreased "rate of living."

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Crossref · 10.1016/j.cub.2009.08.016

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Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Reduced mitochondrial function can, in some circumstances, increase lifespan.

    “Unexpectedly, reduced mitochondrial function can, in some circumstances, increase lifespan.”

    From Neural mechanisms of ageing and cognitive decline (2010) · cites this paper as [39]

  • In Drosophila, reduced expression of electron transport chain components specifically in adult neurons is sufficient to extend lifespan.

    “In Drosophila, reduced expression of electron transport chain components specifically in adult neurons is sufficient to extend lifespan (39).”

    From Neural mechanisms of ageing and cognitive decline (2010) · cites this paper as [39]

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Authors
Copeland, J. M., Cho, J., Lo, T., Hur, J. H., Bahadorani, S., Arabyan, T., Rabie, J., Soh, J., & Walker, D. W.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Walker, David W.
Venue
Current Biology
Publisher
Elsevier BV
Published
2009-10
Volume
19
Issue
19
Pages
1591-1598
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2087945271
Cited by
409
References
32
Citations by year
2026: 14 · 2025: 17 · 2024: 24 · 2023: 24 · 2022: 24 · 2021: 24 · 2020: 29 · 2019: 22 · 2018: 36 · 2017: 19 · 2016: 31 · 2015: 19 · 2014: 40 · 2013: 14 · 2012: 23
FWCI
7.34
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ellison Medical Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
Keywords
Drosophila melanogaster, lifespan extension, aging, mitochondrial electron transport chain, RNA interference, respiratory chain complexes, complex I, cytochrome bc1 complex, cytochrome c oxidase, ATP synthase, longevity, paraquat resistance, fertility, energy production, neurons
MeSH terms
Animals, Drosophila melanogaster, Gene Expression Regulation, Longevity, Mitochondria, RNA Interference, Electron Transport Chain Complex Proteins

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