Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia

Aspergillus fumigatus produce airborne spores (conidia), which are inhaled in abundant quantity. In an immunocompromised population, the host immune system fails to clear the inhaled conidia, which then germinate and invade, leading to pulmonary aspergillosis. In an immunocompetent population, the i...

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Main Authors: Sarah Sze Wah Wong, Vishukumar Aimanianda
Format: Article
Language:English
Published: MDPI AG 2017-12-01
Series:Journal of Fungi
Subjects:
Online Access:https://www.mdpi.com/2309-608X/4/1/3
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author Sarah Sze Wah Wong
Vishukumar Aimanianda
author_facet Sarah Sze Wah Wong
Vishukumar Aimanianda
author_sort Sarah Sze Wah Wong
collection DOAJ
description Aspergillus fumigatus produce airborne spores (conidia), which are inhaled in abundant quantity. In an immunocompromised population, the host immune system fails to clear the inhaled conidia, which then germinate and invade, leading to pulmonary aspergillosis. In an immunocompetent population, the inhaled conidia are efficiently cleared by the host immune system. Soluble mediators of the innate immunity, that involve the complement system, acute-phase proteins, antimicrobial peptides and cytokines, are often considered to play a complementary role in the defense of the fungal pathogen. In fact, the soluble mediators are essential in achieving an efficient clearance of the dormant conidia, which is the morphotype of the fungus upon inhalation by the host. Importantly, harnessing the host soluble mediators challenges the immunological inertness of the dormant conidia due to the presence of the rodlet and melanin layers. In the review, we summarized the major soluble mediators in the lung that are involved in the recognition of the dormant conidia. This knowledge is essential in the complete understanding of the immune defense against A. fumigatus.
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spelling doaj.art-18b4eb293f364f92b26ba57fa901e4b72022-12-21T22:50:39ZengMDPI AGJournal of Fungi2309-608X2017-12-0141310.3390/jof4010003jof4010003Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus ConidiaSarah Sze Wah Wong0Vishukumar Aimanianda1Unité des Aspergillus, Department of Mycology, Institut Pasteur, 75015 Paris, FranceUnité des Aspergillus, Department of Mycology, Institut Pasteur, 75015 Paris, FranceAspergillus fumigatus produce airborne spores (conidia), which are inhaled in abundant quantity. In an immunocompromised population, the host immune system fails to clear the inhaled conidia, which then germinate and invade, leading to pulmonary aspergillosis. In an immunocompetent population, the inhaled conidia are efficiently cleared by the host immune system. Soluble mediators of the innate immunity, that involve the complement system, acute-phase proteins, antimicrobial peptides and cytokines, are often considered to play a complementary role in the defense of the fungal pathogen. In fact, the soluble mediators are essential in achieving an efficient clearance of the dormant conidia, which is the morphotype of the fungus upon inhalation by the host. Importantly, harnessing the host soluble mediators challenges the immunological inertness of the dormant conidia due to the presence of the rodlet and melanin layers. In the review, we summarized the major soluble mediators in the lung that are involved in the recognition of the dormant conidia. This knowledge is essential in the complete understanding of the immune defense against A. fumigatus.https://www.mdpi.com/2309-608X/4/1/3Aspergillus fumigatusinnate immunityhumoral immunitycomplement
spellingShingle Sarah Sze Wah Wong
Vishukumar Aimanianda
Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
Journal of Fungi
Aspergillus fumigatus
innate immunity
humoral immunity
complement
title Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
title_full Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
title_fullStr Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
title_full_unstemmed Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
title_short Host Soluble Mediators: Defying the Immunological Inertness of Aspergillus fumigatus Conidia
title_sort host soluble mediators defying the immunological inertness of aspergillus fumigatus conidia
topic Aspergillus fumigatus
innate immunity
humoral immunity
complement
url https://www.mdpi.com/2309-608X/4/1/3
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AT vishukumaraimanianda hostsolublemediatorsdefyingtheimmunologicalinertnessofaspergillusfumigatusconidia