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Quantifying donor-to-donor variation in macrophage responses to the human fungal pathogen Cryptococcus neoformans

Garelnabi, Mariam, Taylor-Smith, Leanne M., Bielska, Ewa, Hall, Rebecca A., Stones, Daniel, May, Robin C. (2018) Quantifying donor-to-donor variation in macrophage responses to the human fungal pathogen Cryptococcus neoformans. PLOS ONE, 13 (3). Article Number e0194615. ISSN 1932-6203. (doi:10.1371/journal.pone.0194615) (KAR id:91789)

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Cryptococcosis remains the leading cause of fungal meningitis worldwide, caused primarily by the pathogen Cryptococcus neoformans. Symptomatic cryptococcal infections typically affect immunocompromised patients. However, environmental exposure to cryptococcal spores is ubiquitous and most healthy individuals are thought to harbor infections from early childhood onwards that are either resolved, or become latent. Since macrophages are a key host cell for cryptococcal infection, we sought to quantify the extent of individual variation in this early phagocyte response within a small cohort of healthy volunteers with no reported immunocompromising conditions. We show that rates of both intracellular fungal proliferation and non-lytic expulsion (vomocytosis) are remarkably variable between individuals. However, we demonstrate that neither gender, in vitro host inflammatory cytokine profiles, nor polymorphisms in several key immune genes are responsible for this variation. Thus the data we present serve to quantify the natural variation in macrophage responses to this important human pathogen and will hopefully provide a useful "benchmark" for the research community.

Item Type: Article
DOI/Identification number: 10.1371/journal.pone.0194615
Uncontrolled keywords: cytokines; macrophages; cryptococcus neoformans; cryptococcus; yeast infections; cryptococcosis; monocytes; fungal pathogens
Subjects: Q Science > QR Microbiology
Divisions: Divisions > Division of Natural Sciences > Biosciences
Depositing User: Becky Hall
Date Deposited: 30 Nov 2021 11:57 UTC
Last Modified: 01 Dec 2021 13:48 UTC
Resource URI: (The current URI for this page, for reference purposes)
Hall, Rebecca A.:
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