Cited by 686Hematopoietic Stem Cell TransplantationEpigenetics and DNA MethylationGenomics and Chromatin Dynamics

Epigenomic profiling of young and aged HSCs reveals concerted changes during aging that reinforce self-renewal

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Sun, Deqiang, Luo, Min, Jeong, Mira, Rodriguez, Benjamin, Xia, Zheng, Hannah, Rebecca, Wang, Hui, Le, Thuc +9 more·2014·Cell Stem Cell

Abstract

To investigate the cell-intrinsic aging mechanisms that erode the function of somatic stem cells during aging, we have conducted a comprehensive integrated genomic analysis of young and aged cells. We profiled the transcriptome, DNA methylome, and histone modifications of young and old murine hematopoietic stem cells (HSCs). Transcriptome analysis indicated reduced TGF-β signaling and perturbation of genes involved in HSC proliferation and differentiation. Aged HSCs exhibited broader H3K4me3 peaks across HSC identity and self-renewal genes and showed increased DNA methylation at transcription factor binding sites associated with differentiation-promoting genes combined with a reduction at genes associated with HSC maintenance. Altogether, these changes reinforce HSC self-renewal and diminish differentiation, paralleling phenotypic HSC aging behavior. Ribosomal biogenesis emerged as a particular target of aging with increased transcription of ribosomal protein and RNA genes and hypomethylation of rRNA genes. This data set will serve as a reference for future epigenomic analysis of stem cell aging.

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Crossref · 10.1016/j.stem.2014.03.002

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  • 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 Sun et al., 2014

  • Age-associated changes in global H3K27me3 levels are context dependent.

    “Interestingly, age-associated changes in global H3K27me3 levels are also context dependent.”

    From The Aging Epigenome (2016) · cites this paper as Sun et al., 2014

  • In young vs old murine hematopoietic stem cells, H3K27me3 levels increased at most loci but decreased at some loci with age.

    “A comparison of H3K27me3 deposition in young versus old murine hematopoietic stem cells revealed that while H3K27me3 levels increased at most loci, there were also loci with decreased H3K27me3 levels with age (Sun et al., 2014).”

    From The Aging Epigenome (2016) · cites this paper as Sun et al., 2014

  • Age-associated DNA hypermethylation of some transcription factor binding sites suggests ability of these proteins to bind DNA and regulate transcription could be disrupted.

    “For example, age-associated DNA hypermethylation of some transcription factor binding sites (Avrahami et al., 2015; Sun et al., 2014; Yuan et al., 2015) suggests that the ability of these proteins to bind DNA and regulate transcription could be disrupted.”

    From The Aging Epigenome (2016) · cites this paper as Sun et al., 2014

  • Loci with age-associated DNA hypermethylation in stem cells are enriched for genes normally repressed by Polycomb repressive complex.

    “Interestingly, studies in stem cells have also demonstrated that loci with age-associated DNA hypermethylation are enriched for genes normally repressed by Polycomb repressive complex, the complex that methylates H3K27 (Beerman et al., 2013; Sun et al., 2014; Teschendorff et al., 2010).”

    From The Aging Epigenome (2016) · cites this paper as Sun et al., 2014

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Authors
Sun, D., Luo, M., Jeong, M., Rodriguez, B., Xia, Z., Hannah, R., Wang, H., Le, T., Faull, K. F., Chen, R., Gu, H., Bock, C., Meissner, A., Göttgens, B., Darlington, G. J., Li, W., & Goodell, M. A.
Affiliations
  • Baylor College of Medicine (US)
  • Wellcome/MRC Cambridge Stem Cell Institute (GB)
  • University of California, Los Angeles (US)
  • Broad Institute (US)
Corresponding author
  • Li, Wei
  • Goodell, Margaret A.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2014-05
Volume
14
Issue
5
Pages
673-688
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W2106462080
Cited by
686
References
65
Citations by year
2026: 49 · 2025: 56 · 2024: 61 · 2023: 56 · 2022: 45 · 2021: 70 · 2020: 75 · 2019: 51 · 2018: 55 · 2017: 52 · 2016: 54 · 2015: 45 · 2014: 17
FWCI
39.34
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • U.S. Department of Defense (T32 MH 19384-14, T32-HD007032, W81XWH-10-1-0501)
  • Samuel Waxman Cancer Research Foundation (CPRIT RP110471, HG007538)
  • Ellison Medical Foundation (RP110028)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
hematopoietic stem cells, stem cell aging, self-renewal, DNA methylation, histone modifications, H3K4me3, TGF-beta signaling, ribosome biogenesis, HSC differentiation, epigenetic profiling, transcriptome
MeSH terms
Animals, Cell Differentiation, Cells, Cultured, Hematopoietic Stem Cells, Male, Transforming Growth Factor beta, Cellular Senescence, Chromatin Immunoprecipitation, Mice, Epigenomics

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