Cited by 69Immune Cell Function and InteractionImmune cells in cancerT-cell and B-cell Immunology

The aged nonhematopoietic environment impairs natural killer cell maturation and function

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Shehata, Hesham M., Hoebe, Kasper, Chougnet, Claire A.·2015·Aging Cell

Abstract

Natural killer (NK) cells are critical in eliminating tumors and viral infections, both of which occur at a high incidence in the elderly. Previous studies showed that aged NK cells are less cytotoxic and exhibit impaired maturation compared to young NK cells. We evaluated whether extrinsic or intrinsic factors were responsible for the impaired maturation and function of NK cells in aging and whether impaired maturation correlated with functional hyporesponsiveness. We confirmed that aged mice have a significant decrease in the frequency of mature NK cells in all lymphoid organs. Impaired NK cell maturation in aged mice correlated with a reduced capacity to eliminate allogeneic and B16 tumor targets in vivo. This could be explained by impaired degranulation, particularly by mature NK cells of aged mice. Consistent with impaired aged NK cell maturation, expression of T-bet and Eomes, which regulate NK cell functional maturation, was significantly decreased in aged bone marrow (BM) NK cells. Mixed BM chimeras revealed that the nonhematopoietic environment was a key determinant of NK cell maturation and T-bet and Eomes expression. In mixed BM chimeras, NK cells derived from both young or aged BM cells adopted an 'aged' phenotype in an aged host, that is, were hyporesponsive to stimuli in vitro, while adopting a 'young' phenotype following transfer in young hosts. Overall, our data suggest that the aged nonhematopoietic environment is responsible for the impaired maturation and function of NK cells. Defining these nonhematopoietic factors could have important implications for improving NK cell function in the elderly.

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  • Low levels of inflammation present in normal aged lung as well as changes in the nonhematopoietic environment may underlie reduced recruitment and maturation of NK cells.

    “Low levels of inflammation present in normal aged lung as well as changes in the nonhematopoietic environment may underlie reduced recruitment and maturation of NK cells (129).”

    From Aging and Lung Disease (2020) · cites this paper as [129]

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Authors
Shehata, H. M., Hoebe, K., & Chougnet, C. A.
Affiliations
Cincinnati Children's Hospital Medical Center (US)
Corresponding author
  • Hoebe, Kasper
  • Chougnet, Claire A.
Venue
Aging Cell
Publisher
Wiley
Published
2015-02-09
Volume
14
Issue
2
Pages
191-199
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W2164107713
Cited by
69
References
47
Citations by year
2026: 4 · 2025: 8 · 2024: 10 · 2023: 5 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 5 · 2017: 5 · 2016: 6 · 2015: 4
FWCI
3.28
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (NIH R01 AG033057)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Cell Function and Interaction
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
natural killer cells, NK cell maturation, aging, T-bet, Eomes, degranulation, bone marrow chimeras, tumor cell killing, allogeneic rejection, aged mice
MeSH terms
Aged, Animals, Cell Differentiation, Female, Humans, Killer Cells, Natural, Mice, Inbred C57BL, Cytokines, Cellular Senescence, Mice

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