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Journal of Innate Immunity
Article . 2017 . Peer-reviewed
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Article . 2018
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Differential Kinetics of Aspergillus nidulans and Aspergillus fumigatus Phagocytosis

Authors: Mark S. Gresnigt; Frank L. van de Veerdonk; Jacques F. Meis; Lars P. Erwig; M Fernanda Alonso; Judith M. Bain; Katharina L. Becker; +3 Authors

Differential Kinetics of Aspergillus nidulans and Aspergillus fumigatus Phagocytosis

Abstract

Invasive aspergillosis mainly occurs in immunocompromised patients and is commonly caused by <i>Aspergillus fumigatus</i>, while <i>A.</i><i>nidulans</i> is rarely the causative agent. However, in chronic granulomatous disease (CGD) patients, <i>A. nidulans</i> is a frequent cause of invasive aspergillosis and is associated with higher mortality. Immune recognition of <i>A. nidulans </i>was compared to <i>A. fumigatus </i>to offer an insight into why <i>A. nidulans</i> infections are prevalent in CGD. Live cell imaging with J774A.1 macrophage-like cells and LC3-GFP-mCherry bone marrow-derived macrophages (BMDMs) revealed that phagocytosis of <i>A. nidulans </i>was slower compared to <i>A. fumigatus</i>. This difference could be attributed to slower migration of J774A.1 cells and a lower percentage of migrating BMDMs. In addition, delayed phagosome acidification and LC3-associated phagocytosis was observed with <i>A. nidulans</i>. Cytokine and oxidative burst measurements in human peripheral blood mononuclear cells revealed a lower oxidative burst upon challenge with <i>A. nidulans</i>. In contrast, <i>A. nidulans</i> induced significantly higher concentrations of cytokines. Collectively, our data demonstrate that <i>A. nidulans </i>is phagocytosed and processed at a slower rate compared to <i>A. fumigatus,</i> resulting in reduced fungal killing and increased germination of conidia. This slower rate of <i>A. nidulans</i> clearance may be permissive for overgrowth within certain immune settings.

Countries
Netherlands, United Kingdom, Netherlands
Related Organizations
Keywords

610, Radboud University Medical Center, Granulomatous Disease, Chronic, Aspergillus nidulans, Cell Line, Mice, SDG 3 - Good Health and Well-being, Phagocytosis, Species Specificity, Cell Movement, Phagosomes, Phagosome acidification, Animals, Aspergillosis, Humans, QR180 Immunology, Radboudumc 4: lnfectious Diseases and Global Health RIMLS: Radboud Institute for Molecular Life Sciences, Aspergillus fumigatus, Macrophages, phagocytosis, LC3-associated phagocytosis, Kinetics, QR180, Chronic granulomatous disease, Leukocytes, Mononuclear, Cytokines, Radboudumc 4: lnfectious Diseases and Global Health RIHS: Radboud Institute for Health Sciences, Reactive Oxygen Species

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    citations
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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
16
Top 10%
Top 10%
Top 10%
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gold