Cited by 377Hematopoietic Stem Cell TransplantationBlood disorders and treatmentsMesenchymal stem cell research

A new mechanism for the aging of hematopoietic stem cells: aging changes the clonal composition of the stem cell compartment but not individual stem cells

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Cho, Rebecca H., Sieburg, Hans B., Muller-Sieburg, Christa E.·2008·Blood

Abstract

Whether hematopoietic stem cells (HSCs) change with aging has been controversial. Previously, we showed that the HSC compartment in young mice consists of distinct subsets, each with predetermined self-renewal and differentiation behavior. Three classes of HSCs can be distinguished based on their differentiation programs: lymphoid biased, balanced, and myeloid biased. We now show that aging causes a marked shift in the representation of these HSC subsets. A clonal analysis of repopulating HSCs demonstrates that lymphoid-biased HSCs are lost and long-lived myeloid-biased HSCs accumulate in the aged. Myeloid-biased HSCs from young and aged sources behave similarly in all aspects tested. This indicates that aging does not change individual HSCs. Rather, aging changes the clonal composition of the HSC compartment. We show further that genetic factors contribute to the age-related changes of the HSC subsets. In comparison with B6 mice, aged D2 mice show a more pronounced shift toward myeloid-biased HSCs with a corresponding reduction in the number of both T- and B-cell precursors. This suggests that low levels of lymphocytes in the blood can be a marker for HSC aging. The loss of lymphoid-biased HSCs may contribute to the impaired immune response to infectious diseases and cancers in the aged.

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Crossref · 10.1182/blood-2007-11-123547

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  • The number of lymphoid-biased stem cells decreases with age while myeloid-biased hematopoietic stem cells increase.

    “it is now appreciated that the number of lymphoid-biased stem cells declines with age concomitant with an increase in myeloid-biased HSCs (19).”

    From Causes, consequences, and reversal of immune system aging (2013) · cites this paper as [19]

  • Aged mice have an overall larger HSC pool.

    “in aged mice that display an overall increase in HSC pool size”

    From Aging of hematopoietic stem cells (2018) · cites this paper as [32]

  • The functional heterogeneity of the HSC population rises with age.

    “the functional heterogeneity of the HSC population increases with age.”

    From Aging of hematopoietic stem cells (2018) · cites this paper as [32]

  • Individual HSCs in aged mice behave very differently from one another.

    “individual HSCs behave very differently.”

    From Aging of hematopoietic stem cells (2018) · cites this paper as [32]

  • Mice whose blood cell production comes from even a single stem cell are not necessarily prone to leukemia.

    “mice in which blood cell production is derived from even a single stem cell, are not necessarily prone to develop leukemia.”

    From Aging of hematopoietic stem cells (2018) · cites this paper as [32]

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1 of the 62 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. Sudo K, Ema H, Morita Y, Nakauchi H. Age-as- sociated characteristics of murine hematopoi- etic stem cells. J Exp Med. 2000;192:1273- 1280.
  2. Chen J, Astle CM, Harrison DE. Genetic regula- tion of primitive hematopoietic stem cell senes- cence. Exp Hematol. 2000;28:442-450.

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Authors
Cho, R. H., Sieburg, H. B., & Muller-Sieburg, C. E.
Affiliations
  • Sidney Kimmel Cancer Center (US)
  • Sidney Kimmel Cancer Center, San Diego, CA
Venue
Blood
Published
2008-06-15
Volume
111
Issue
12
Pages
5553-5561
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1974139477
Cited by
377
References
62
Citations by year
2026: 14 · 2025: 22 · 2024: 23 · 2023: 27 · 2022: 18 · 2021: 19 · 2020: 26 · 2019: 22 · 2018: 16 · 2017: 19 · 2016: 24 · 2015: 20 · 2014: 22 · 2013: 31 · 2012: 23
FWCI
11.04
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Miami
  • National Institutes of Health
  • National Institute on Aging (R01AG023197, AG023197)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK048015, R01DK048015, R56DK048015)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
hematopoietic stem cells, aging, clonal composition, self-renewal, clonal analysis, T cell precursors, B cell precursors, genetic factors, C57BL/6 mice, immunosenescence
MeSH terms
Aging, Animals, B-Lymphocytes, Blood, Clone Cells, Genetic Markers, Hematopoietic Stem Cells, Lymphocytes, Mice, Inbred Strains, Mice, Transgenic, T-Lymphocytes, Thymus Gland, Cellular Senescence, Cell Lineage, Mice, Congenic, Myeloid Cells, Mice

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