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• W2893498427 abstract "Virulence mechanisms of the pathogenic fungus Aspergillus fumigatus are multifactorial and depend on the immune state of the host, but little is known about the fungal mechanism that develops during the process of lung invasion. In this study, microarray technology was combined with a histopathology evaluation of infected lungs so that the invasion strategy followed by the fungus could be described. To achieve this, an intranasal mice infection was performed to extract daily fungal samples from the infected lungs over four days post-infection. The pathological study revealed a heavy fungal progression throughout the lung, reaching the blood vessels on the third day after exposure and causing tissue necrosis. One percent of the fungal genome followed a differential expression pattern during this process. Strikingly, most of the genes of the intertwined fumagillin/pseurotin biosynthetic gene cluster were upregulated as were genes encoding lytic enzymes such as lipases, proteases (DppIV, DppV, Asp f 1 or Asp f 5) and chitinase (chiB1) as well as three genes related with pyomelanin biosynthesis process. Furthermore, we demonstrate that fumagillin is produced in an in vitro pneumocyte cell line infection model and that loss of fumagillin synthesis reduces epithelial cell damage. These results suggest that fumagillin contributes to tissue damage during invasive aspergillosis. Therefore, it is probable that A. fumigatus progresses through the lungs via the production of the mycotoxin fumagillin combined with the secretion of lytic enzymes that allow fungal growth, angioinvasion and the disruption of the lung parenchymal structure." @default.
• W2893498427 created "2018-10-05" @default.
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• W2893498427 date "2018-10-05" @default.
• W2893498427 modified "2023-10-17" @default.
• W2893498427 title "A possible role for fumagillin in cellular damage during host infection by <i>Aspergillus fumigatus</i>" @default.
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• W2893498427 doi "https://doi.org/10.1080/21505594.2018.1526528" @default.
• W2893498427 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6177242" @default.
• W2893498427 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30251593" @default.
• W2893498427 hasPublicationYear "2018" @default.
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