Cited by 94Circadian rhythm and melatoninGenetics, Aging, and Longevity in Model OrganismsDietary Effects on Health

Circadian clocks govern calorie restriction—mediated life span extension through BMAL1‐ and IGF‐1‐dependent mechanisms

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Patel, Sonal A., Chaudhari, Amol, Gupta, Richa, Velingkaar, Nikkhil, Kondratov, Roman V.·2016·The FASEB Journal

Abstract

Calorie restriction (CR) increases longevity in many species by unknown mechanisms. The circadian clock was proposed as a potential mediator of CR. Deficiency of the core component of the circadian clock—transcriptional factor BMAL1 (brain and muscle ARNT [aryl hydrocarbon receptor nuclear translocator]‐like protein 1)—results in accelerated aging. Here we investigated the role of BMAL1 in mechanisms of CR. The 30% CR diet increased the life span of wild‐type (WT) mice by 20% compared to mice on an ad libitum (AL) diet but failed to increase life span of Bmal1 –/– mice. BMAL1 deficiency impaired CR‐mediated changes in the plasma levels of IGF‐1 and insulin. We detected a statistically significantly reduction of IGF‐1 in CR vs. AL by 50 to 70% in WT mice at several daily time points tested, while in Bmal1 –/– the reduction was not significant Insulin levels in WT were reduced by 5 to 9%, while Bmal1 –/– induced it by 10 to 35% at all time points tested. CR up‐regulated the daily average expression of Bmal1 (by 150%) and its downstream target genes Periods (by 470% for Per1 and by 130% for Per2 ). We propose that BMAL1 is an important mediator of CR, and activation of BMAL1 might link CR mechanisms with biologic clocks.—Patel, S. A., Chaudhari, A., Gupta, R., Velingkaar, N., Kondratov, R. V. Circadian clocks govern calorie restriction‐mediated life span extension through BMAL1‐ and IGF‐1‐dependent mechanisms. FASEB J. 30, 1634–1642 (2016). www.fasebj.org

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  • Caloric restriction in mice was associated with life span extension by 20%.

    “Similarly, caloric restriction in mice was associated with life span extension by 20% (Patel et al, 2015).”

    From Microglia Priming with Aging and Stress (2017) · cites this paper as Patel et al, 2015

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Authors
Patel, S. A., Chaudhari, A., Gupta, R., Velingkaar, N., & Kondratov, R. V.
Affiliations
Cleveland State University (US)
Corresponding author
Kondratov, Roman V.
Venue
The FASEB Journal
Publisher
Wiley
Published
2015-12-23
Volume
30
Issue
4
Pages
1634-1642
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2261939670
Cited by
94
References
46
Citations by year
2026: 5 · 2025: 6 · 2024: 3 · 2023: 11 · 2022: 13 · 2021: 12 · 2020: 12 · 2019: 9 · 2018: 10 · 2017: 7 · 2016: 6
FWCI
4.25
Type
journal article
Language
en
Open access
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1R01AG039547)
  • Cleveland State University
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
Keywords
caloric restriction, lifespan extension, circadian clock, Bmal1, insulin-like growth factor I, insulin, aging, Bmal1 knockout mice, period gene, longevity
MeSH terms
Animals, Blood Glucose, Body Weight, Female, Insulin, Insulin-Like Growth Factor I, Life Expectancy, Longevity, Male, Mice, Inbred C57BL, Motor Activity, Time Factors, Blotting, Western, Signal Transduction, Mice, Knockout, Reverse Transcriptase Polymerase Chain Reaction, Caloric Restriction, ARNTL Transcription Factors, Circadian Clocks

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