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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Characterisation of innate fungal recognition in the lung
PLoS ONE, Volume 7, No. 4, Article e35675, Year 2012
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Description
The innate recognition of fungi by leukocytes is mediated by pattern recognition receptors (PRR), such as Dectin-1, and is thought to occur at the cell surface triggering intracellular signalling cascades which lead to the induction of protective host responses. In the lung, this recognition is aided by surfactant which also serves to maintain the balance between inflammation and pulmonary function, although the underlying mechanisms are unknown. Here we have explored pulmonary innate recognition of a variety of fungal particles, including zymosan, Candida albicans and Aspergillus fumigatus, and demonstrate that opsonisation with surfactant components can limit inflammation by reducing host-cell fungal interactions. However, we found that this opsonisation does not contribute directly to innate fungal recognition and that this process is mediated through non-opsonic PRRs, including Dectin-1. Moreover, we found that pulmonary inflammatory responses to resting Aspergillus conidia were initiated by these PRRs in acidified phagolysosomes, following the uptake of fungal particles by leukocytes. Our data therefore provides crucial new insights into the mechanisms by which surfactant can maintain pulmonary function in the face of microbial challenge, and defines the phagolysosome as a novel intracellular compartment involved in the innate sensing of extracellular pathogens in the lung. © 2012 Faro-Trindade et al.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC3334970/bin/pone.0035675.s001.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC3334970/bin/pone.0035675.s002.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC3334970/bin/pone.0035675.s003.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC3334970/bin/pone.0035675.s004.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC3334970/bin/pone.0035675.s005.tif
Authors & Co-Authors
Faro-Trindade, Inês
South Africa, Cape Town
University of Cape Town
Willment, Janet Anne
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Kerrigan, Ann M.
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Redelinghuys, Pierre
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Hadebe, Sabelo
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Reid, Delyth M.
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Srinivasan, Naren
South Africa, Cape Town
University of Cape Town
Wainwright, Helen Cecilia
South Africa, Cape Town
University of Cape Town
Lang, Dirk M.
South Africa, Cape Town
University of Cape Town
Steele, Chad
United States, Birmingham
The University of Alabama at Birmingham
Brown, Gordon D.A.
South Africa, Cape Town
University of Cape Town
United Kingdom, Aberdeen
University of Aberdeen School of Medicine, Medical Sciences and Nutrition
Statistics
Citations: 50
Authors: 11
Affiliations: 3
Identifiers
Doi:
10.1371/journal.pone.0035675
e-ISSN:
19326203