Functional Characterization of Clinical Isolates of the Opportunistic Fungal Pathogen Aspergillus nidulans

Rafael Wesley Bastos, Clara Valero, Lilian Pereira Silva, Taylor Schoen, Milton Drott, Verônica Brauer, Rafael Silva-Rocha, Abigail Lind, Jacob L. Steenwyk, Antonis Rokas, Fernando Rodrigues, Agustin Resendiz-Sharpe, Katrien Lagrou, Marina Marcet-Houben, Toni Gabaldón, Erin McDonnell, Ian Reid, Adrian Tsang, Berl R. Oakley, Flávio Vieira LouresFausto Almeida, Anna Huttenlocher, Nancy P. Keller, Laure Nicolas Annick Ries*, Gustavo H. Goldman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

<jats:p> Immunocompromised patients are susceptible to infections with opportunistic filamentous fungi from the genus <jats:italic>Aspergillus</jats:italic> . Although <jats:named-content content-type="genus-species">A. fumigatus</jats:named-content> is the main etiological agent of <jats:italic>Aspergillus</jats:italic> species-related infections, other species, such as <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> , are prevalent in a condition-specific manner. <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> is a predominant infective agent in patients suffering from chronic granulomatous disease (CGD). <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> isolates have mainly been studied in the context of CGD although infection with <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> also occurs in non-CGD patients. This study carried out a detailed biological characterization of two non-CGD <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> clinical isolates and compared the results to those with a reference strain. Phenotypic, metabolomic, and genomic analyses highlight fundamental differences in carbon source utilization, stress responses, and maintenance of cell wall integrity among the strains. One clinical strain had increased virulence in models with impaired neutrophil function. Just as in <jats:named-content content-type="genus-species">A. fumigatus</jats:named-content> , strain heterogeneity exists in <jats:named-content content-type="genus-species">A. nidulans</jats:named-content> clinical strains that can define virulence traits. </jats:p>
Original languageEnglish
Number of pages0
JournalmSphere
Volume5
Issue number2
DOIs
Publication statusPublished - 29 Apr 2020

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