Aging of hematopoietic stem cells: Intrinsic changes or micro-environmental effects?

Carolien M. Woolthuis, Gerald de Haan, Gerwin Huls*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

52 Citations (Scopus)

Abstract

During development hematopoietic stem cells (HSCs) expand in number and persist throughout life by undergoing self-renewing divisions. Nevertheless, the hematopoietic system does not escape the negative effects of aging, suggesting that self-renewal is not complete. A fundamental issue in stem cell biology relates to such age-dependent loss of stem cell activity. Both stem cell intrinsic factors and extrinsic factors associated with an aging micro-environment could contribute to aging of the hematopoietic system. Recently, changes in the clonal composition of the HSC compartment during aging have been put forward as a key factor. Here, we discuss these recent developments and speculate how they may be of clinical relevance.

Original languageEnglish
Pages (from-to)512-517
Number of pages6
JournalCurrent opinion in immunology
Volume23
Issue number4
DOIs
Publication statusPublished - Aug-2011

Keywords

  • AGE-RELATED-CHANGES
  • ACUTE MYELOID-LEUKEMIA
  • BONE-MARROW
  • PROGENITOR CELLS
  • COMPARTMENT
  • NICHE
  • MICE
  • IMMUNOSENESCENCE
  • PROLIFERATION
  • REJUVENATION

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