Inflammation and Aging of Hematopoietic Stem Cells in Their Niche

Cells. 2021 Jul 21;10(8):1849. doi: 10.3390/cells10081849.

Abstract

Hematopoietic stem cells (HSCs) sustain the lifelong production of all blood cell lineages. The functioning of aged HSCs is impaired, including a declined repopulation capacity and myeloid and platelet-restricted differentiation. Both cell-intrinsic and microenvironmental extrinsic factors contribute to HSC aging. Recent studies highlight the emerging role of inflammation in contributing to HSC aging. In this review, we summarize the recent finding of age-associated changes of HSCs and the bone marrow niche in which they lodge, and discuss how inflammation may drive HSC aging.

Keywords: aging; hematopoietic stem cells; heterogeneity; inflammation; niche.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Cell Proliferation
  • Cell Self Renewal
  • Cellular Senescence*
  • Hematopoietic Stem Cells / metabolism
  • Hematopoietic Stem Cells / pathology*
  • Humans
  • Inflammation / metabolism
  • Inflammation / pathology*
  • Inflammation Mediators / metabolism
  • Phenotype
  • Signal Transduction
  • Stem Cell Niche*

Substances

  • Inflammation Mediators