Cited by 1,055Genetics, Aging, and Longevity in Model OrganismsNeuroinflammation and Neurodegeneration MechanismsAntioxidants, Aging, Portulaca oleracea

Gene-expression profile of the ageing brain in mice

Lee, Cheol-Koo, Weindruch, Richard, Prolla, Tomas A.·2000·Nature Genetics

Abstract

Ageing of the brain leads to impairments in cognitive and motor skills, and is the major risk factor for several common neurological disorders such as Alzheimer disease (AD) and Parkinson disease (PD). Recent studies suggest that normal brain ageing is associated with subtle morphological and functional alterations in specific neuronal circuits, as opposed to large-scale neuronal loss. In fact, ageing of the central nervous system in diverse mammalian species shares many features, such as atrophy of pyramidal neurons, synaptic atrophy, decrease of striatal dopamine receptors, accumulation of fluorescent pigments, cytoskeletal abnormalities, and reactive astrocytes and microglia. To provide the first global analysis of brain ageing at the molecular level, we used oligonucleotide arrays representing 6,347 genes to determine the gene-expression profile of the ageing neocortex and cerebellum in mice. Ageing resulted in a gene-expression profile indicative of an inflammatory response, oxidative stress and reduced neurotrophic support in both brain regions. At the transcriptional level, brain ageing in mice displays parallels with human neurodegenerative disorders. Caloric restriction, which retards the ageing process in mammals, selectively attenuated the age-associated induction of genes encoding inflammatory and stress responses.

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Crossref · 10.1038/77046

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  • Dietary restriction increases IκBα, a NF-κB inhibitor, and decreases the p65 subunit of NF-κB in mouse neocortex.

    “A previous gene profiling study provided evidence that DR increased IκBα, a NF-κB inhibitor, and decreased the p65 subunit of NF-κB in mouse neocortex [147].”
  • In 18-month-old mouse retinas, supplementation with 24:5n-3 significantly down-regulated genes from the 'aging cerebellum' gene set compared with control (NES = −1.82, FDR = 5.83 × 10−4).

    “Further analysis demonstrated significant down-regulation of genes from the “aging cerebellum” gene set (35) (NES = −1.82 and FDR = 5.83 × 10−4) in retinas from 18-month-old mice after supplementation with 24:5n-3 compared with control, including significant down-regulation of apolipoprotein E (Apoe) transcript (log2FC = −0.79 and padj = 0.001) (Fig. 5F).”
  • Gene expression profiling studies of ageing mouse, rat, monkey and human brains have shown significant changes in the expression of synaptic genes.

    “Gene expression profiling studies of ageing mouse, rat, monkey and human brains have shown significant changes in the expression of synaptic genes (7–13).”

    From Neural mechanisms of ageing and cognitive decline (2010) · cites this paper as [8]

  • Caloric restriction has beneficial effects on the function of the brain and its vulnerability to age-dependent pathology.

    “Caloric restriction has also been widely documented to have beneficial effects on the function of the brain and its vulnerability to age-dependent pathology.”

    From Neural mechanisms of ageing and cognitive decline (2010) · cites this paper as [8]

  • Caloric restriction prevents many age-dependent gene expression changes in the mouse brain, reduces age-related brain atrophy in rhesus macaques, and has significant beneficial effects on the age-dependent impairment of learning and memory in rodents and humans.

    “It prevents many age-dependent gene expression changes in the mouse brain (8,43), reduces age-related brain atrophy in rhesus macaques (75) and has significant beneficial effects on the age-dependent impairment of learning and memory in rodents (76,77) and humans (78).”

    From Neural mechanisms of ageing and cognitive decline (2010) · cites this paper as [8]

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Authors
Lee, C.-K., Weindruch, R., & Prolla, T. A.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
  • Weindruch, Richard
  • Prolla, Tomas A.
Venue
Nature Genetics
Published
2000-07
Volume
25
Issue
3
Pages
294-297
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W1488124756
Cited by
1,055
References
25
Citations by year
2026: 2 · 2025: 18 · 2024: 14 · 2023: 18 · 2022: 12 · 2021: 34 · 2020: 22 · 2019: 23 · 2018: 29 · 2017: 24 · 2016: 33 · 2015: 38 · 2014: 31 · 2013: 37 · 2012: 44
FWCI
25.12
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ca078723-04)
  • National Institute on Aging (P01-AG-11915, P01AG011915)
  • National Cancer Institute (R01 CA 78723)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Antioxidants, Aging, Portulaca oleracea
Keywords
brain aging, gene expression profiling, neocortex, cerebellum, neuroinflammation, oxidative stress, neurotrophic support, caloric restriction, Alzheimer's disease, Parkinson's disease, neurodegeneration
MeSH terms
Aging, Animals, Brain, Cerebellum, Male, Mice, Inbred C57BL, RNA, Messenger, Gene Expression, Neocortex, RNA Stability, Mice

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