Cited by 37Selenium in Biological SystemsGenetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and Senescence

Opposing impacts on healthspan and longevity by limiting dietary selenium in telomere dysfunctional mice

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Wu, Ryan T., Cao, Lei, Mattson, Elliot, Witwer, Kenneth W., Cao, Jay, Zeng, Huawei, He, Xin, Combs, Gerald F. +1 more·2017·Aging Cell

Abstract

Summary: Selenium (Se) is a trace metalloid essential for life, but its nutritional and physiological roles during the aging process remain elusive. While telomere attrition contributes to replicative senescence mainly through persistent DNA damage response, such an aging process is mitigated in mice with inherently long telomeres. Here, weanling third generation telomerase RNA component knockout mice carrying short telomeres were fed a Se‐deficient basal diet or the diet supplemented with 0.15 ppm Se as sodium selenate to be nutritionally sufficient throughout their life. Dietary Se deprivation delayed wound healing and accelerated incidence of osteoporosis, gray hair, alopecia, and cataract, but surprisingly promoted longevity. Plasma micro RNA profiling revealed a circulating signature of Se deprivation, and subsequent ontological analyses predicted dominant changes in metabolism. Consistent with this observation, dietary Se deprivation accelerated age‐dependent declines in glucose tolerance, insulin sensitivity, and glucose‐stimulated insulin production in the mice. Moreover, DNA damage and senescence responses were enhanced and Pdx1 and MafA mRNA expression were reduced in pancreas of the Se‐deficient mice. Altogether, these results suggest a novel model of aging with conceptual advances, whereby Se at low levels may be considered a hormetic chemical and decouple healthspan and longevity.

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  • The structural and functional roles of zinc, selenium, magnesium, copper, and manganese are crucial for antioxidant defence.

    “Concerning the latter, the structural and functional roles of a few minerals such as zinc (Zn), selenium (Se), magnesium (Mg) copper (Cu) and manganese (Mn) is crucial (Table 5) [409,410,411,412,413,414,415,416,417,418,419,420].”
  • Selenium deprivation in mice accelerates DNA damage, senescence, and aging-related processes.

    “Furthermore, Se deprivation in mice has been found to accelerate DNA damage, senescence, and aging-related processes [415].”

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Authors
Wu, R. T., Cao, L., Mattson, E., Witwer, K. W., Cao, J., Zeng, H., He, X., Combs, G. F., & Cheng, W.
Affiliations
  • University of Maryland, College Park (US)
  • Mississippi State University (US)
  • Johns Hopkins University (US)
  • Agricultural Research Service (US)
Corresponding author
Cheng, Wen‐Hsing
Venue
Aging Cell
Publisher
Wiley
Published
2016-09-21
Volume
16
Issue
1
Pages
125-135
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W2522797895
Cited by
37
References
45
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 6 · 2021: 5 · 2020: 5 · 2019: 5 · 2018: 5 · 2017: 3
FWCI
4.54
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Agriculture
  • Agricultural Research Service (5450‐51000‐050‐00D, 3062‐51000‐053‐00D)
  • Johns Hopkins University
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
dietary selenium, selenium deficiency, telomere dysfunction, aging, longevity, healthspan, replicative senescence, DNA damage response, wound healing, osteoporosis, gray hair, cataract, miRNA expression profiling, glucose tolerance, insulin sensitivity, pancreatic beta cells, PDX1, MafA, hormesis
MeSH terms
Animals, Body Weight, Diet, Glucose, Health, Histones, Insulin, Longevity, Male, Mice, Inbred C57BL, Pancreas, Phenotype, RNA, RNA, Messenger, Selenium, Down-Regulation, Survival Analysis, Telomere, Telomerase, Gene Expression Profiling, MicroRNAs, Genomic Instability, Mice

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