Cited by 192Genomics and Chromatin DynamicsGenetics, Aging, and Longevity in Model OrganismsEpigenetics and DNA Methylation

Chromatin remodeling in the aging genome of Drosophila

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Wood, Jason G., Hillenmeyer, Sara, Lawrence, Charles, Chang, Chengyi, Hosier, Suzanne, Lightfoot, Will, Mukherjee, Eric, Jiang, Nan +4 more·2010·Aging Cell

Abstract

Summary: Chromatin structure affects the accessibility of DNA to transcription, repair, and replication. Changes in chromatin structure occur during development, but less is known about changes during aging. We examined the state of chromatin structure and its effect on gene expression during aging in Drosophila at the whole genome and cellular level using whole‐genome tiling microarrays of activation and repressive chromatin marks, whole‐genome transcriptional microarrays and single‐cell immunohistochemistry. We found dramatic reorganization of chromosomal regions with age. Mapping of H3K9me3 and HP1 signals to fly chromosomes reveals in young flies the expected high enrichment in the pericentric regions, the 4th chromosome, and islands of facultative heterochromatin dispersed throughout the genome. With age, there is a striking reduction in this enrichment resulting in a nearly equivalent level of H3K9me3 and HP1 in the pericentric regions, the 4th chromosome, facultative heterochromatin, and euchromatin. These extensive changes in repressive chromatin marks are associated with alterations in age‐related gene expression. Large‐scale changes in repressive marks with age are further substantiated by single‐cell immunohistochemistry that shows changes in nuclear distribution of H3K9me3 and HP1 marks with age. Such epigenetic changes are expected to directly or indirectly impinge upon important cellular functions such as gene expression, DNA repair, and DNA replication. The combination of genome‐wide approaches such as whole‐genome chromatin immunoprecipitation and transcriptional studies in conjunction with single‐cell immunohistochemistry as shown here provide a first step toward defining how changes in chromatin may contribute to the process of aging in metazoans.

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Crossref · 10.1111/j.1474-9726.2010.00624.x

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  • In Drosophila, H3K9me3 and HP1 decline with age in pericentric regions and islands of heterochromatin.

    “In Drosophila, H3K9me3 and HP1 decline with age in pericentric regions and islands of heterochromatin58.”

    From The role of retrotransposable elements in ageing and age-associated diseases (2021) · cites this paper as [58]

    The Results (‘Repressive marks change with age’) report reduced enrichment of H3K9me3 and HP1 in pericentric regions and islands of facultative heterochromatin relative to euchromatin. The Discussion cautions that ChIP-chip cannot establish whether either mark actually declines in those regions with age; increased marking in euchromatin could produce the same pattern. The unqualified claim of a decline therefore overstates the finding. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Retrotransposons become reactivated in cell senescence and with age in both mammals and Drosophila.

    “Retrotransposons become reactivated in cell senescence and with age in both mammals and Drosophila58, 60, 66, 68.”

    From The role of retrotransposable elements in ageing and age-associated diseases (2021) · cites this paper as [58]

    The Discussion raises the possibility of age-related changes in transposon RNA in Drosophila, but says the study could not detect them with its transcriptional microarrays. It does not establish retrotransposon reactivation, and it provides no finding about mammalian cell senescence. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • H3K4me3 deposition changes with age in murine hematopoietic stem cells, Drosophila, and cellular senescence in human fibroblasts.

    “H3K4me3, a mark associated with active transcription, has also been implicated in longevity, and its deposition changes with age in murine hematopoietic stem cells and in Drosophila (Sun et al., 2014; Wood et al., 2010) and cellular senescence in human fibroblasts (Shah et al., 2013).”

    From The Aging Epigenome (2016) · cites this paper as Wood et al., 2010

  • Age-related H3K4me2/3 deposition changes may alter KDM5/RBR-2 activation of key mitochondrial genes.

    “changes in H3K4me2/3 deposition with age (Sun et al., 2014; Wood et al., 2010) may alter the ability of the H3K4me2/3 demethylase KDM5/RBR-2 to activate the transcription of key mitochondrial genes (Liu and Secombe, 2015).”

    From The Aging Epigenome (2016) · cites this paper as Wood et al., 2010

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Authors
Wood, J. G., Hillenmeyer, S., Lawrence, C., Chang, C., Hosier, S., Lightfoot, W., Mukherjee, E., Jiang, N., Schorl, C., Brodsky, A. S., Neretti, N., & Helfand, S. L.
Affiliations
Brown University (US)
Corresponding author
  • Neretti, Nicola
  • Helfand, Stephen L.
Venue
Aging Cell
Publisher
Wiley
Published
2010-10-21
Volume
9
Issue
6
Pages
971-978
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W1586705837
Cited by
192
References
32
Citations by year
2026: 14 · 2025: 13 · 2024: 7 · 2023: 20 · 2022: 10 · 2021: 26 · 2020: 13 · 2019: 17 · 2018: 12 · 2017: 9 · 2016: 12 · 2015: 14 · 2014: 7 · 2013: 8 · 2012: 5
FWCI
2.34
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Ellison Medical Foundation
  • National Institute on Aging (R01AG025277, K25AG028753, RF1AG024353, AG16667, AG24353, AG25277, R01AG024353, R01AG016667, R37AG016667, AG028753)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
chromatin remodeling, aging, Drosophila, H3K9me3, HP1, facultative heterochromatin, age-related gene expression, epigenetic modifications, pericentromeric heterochromatin, chromosomal rearrangements
MeSH terms
Aging, Animals, DNA Replication, Drosophila, Immunohistochemistry, Genome, Genes, Insect, Drosophila Proteins, Chromatin Assembly and Disassembly, Chromatin Immunoprecipitation

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