Cited by 70Antifungal resistance and susceptibilityImmune cells in cancerFungal and yeast genetics research

Distinct Responses of Human Monocyte Subsets to Aspergillus fumigatus Conidia

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Serbina, Natalya V, Cherny, Mathew, Shi, Chao, Bleau, Sharon A, Collins, Nancy H, Young, James W, Pamer, Eric G·2009·The Journal of Immunology

Abstract

Aspergillus fumigatus is an environmental fungus that causes life-threatening infections in neutropenic patients. In the absence of intact innate immunity, inhaled A. fumigatus spores (conidia) germinate in the lung, forming hyphae that invade blood vessels and disseminate to other tissues. Although macrophages and neutrophils are postulated to provide defense against invasive fungal infection, animal models and human studies suggest that circulating monocytes also contribute to antifungal immunity. Although human monocyte subsets, defined as either CD14+CD16− or CD14+CD16+, have been extensively characterized, their respective roles during fungal infection remain undefined. We isolated CD14+CD16− and CD14+CD16+ monocytes from healthy allogeneic hematopoietic stem cell transplantation donors and compared their ability to phagocytose and inhibit A. fumigatus conidia. Both monocyte subsets efficiently phagocytose conidia, but only CD14+CD16− monocytes inhibit conidial germination yet secrete little TNF. In contrast CD14+CD16+ do not inhibit conidial germination and secrete large amounts of TNF. Although CD14+CD16− and CD14+CD16+ monocytes differ in their response to dormant conidia, responses are similar if conidia are already germinated at the time of monocyte uptake. Our study demonstrates that functional CD14+CD16− and CD14+CD16+ monocytes can be isolated from allogeneic hematopoietic stem cell transplantation donors and that these subsets differ in their response to A. fumigatus conidia.

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  • In humans, classical CD14+/CD16+ human monocytes efficiently control growth of Aspergillus conidia via Ca2+/calmodulin-dependent activation of the LAP pathway.

    “In humans, the classical CD14+/CD16+ human monocytes efficiently control growth of Aspergillus conidia (274) via Ca2+/calmodulin-dependent activation of the LAP pathway (239).”

    From Aspergillus fumigatus and Aspergillosis in 2019 (2019) · cites this paper as [274]

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  1. [33]Horelt A Belge KU Steppich B Prinz J Ziegler-Heitbrock L 2002 The CD14+CD16+ monocytes in erysipelas are expanded and show reduced cytokine production Eur J Immunol 32 1319 1327 11981819

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Authors
Serbina, N. V., Cherny, M., Shi, C., Bleau, S. A., Collins, N. H., Young, J. W., & Pamer, E. G.
Affiliations
  • Infectious Disease Service, Department of Medicine
  • Department of Clinical Laboratories
  • Memorial Sloan Kettering Cancer Center (US)
Corresponding author
  • Cherny, Mathew
  • Shi, Chao
Venue
The Journal of Immunology
Published
2009-08
Volume
183
Issue
4
Pages
2678-2687
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2140395963
Cited by
70
References
47
Citations by year
2025: 2 · 2024: 5 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 7 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 5 · 2014: 6 · 2013: 4 · 2012: 8
FWCI
5.29
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (4r37ai039031-21)
  • National Cancer Institute (P01CA023766, CA23 766, K12CA120121)
  • National Institute of Allergy and Infectious Diseases (R01AI039031, R01AI080619, R37-AI039031, R01AI067359, AI 39031, AI67359)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Aspergillus fumigatus, conidia, monocyte subsets, CD14+CD16+ monocytes, phagocytosis, conidial germination inhibition, TNF secretion, invasive fungal infections, antifungal immunity, neutropenia
MeSH terms
Aspergillus fumigatus, Cells, Cultured, Humans, Monocytes, Spores, Fungal, Down-Regulation, Up-Regulation, Granulocyte Colony-Stimulating Factor, Receptors, IgG, Hematopoietic Stem Cell Transplantation, Lipopolysaccharide Receptors, Antigens, CD34, Hematopoietic Stem Cell Mobilization

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