15 June 2021

Intan Dewi and Frank van de Veerdonk, theme Infectious diseases and global health, published in Cell Reports Medicine that Neuraminidase and SIGLEC15 modulate the host defense against pulmonary aspergillosis. Influenza-associated pulmonary aspergillosis (IAPA) has been reported increasingly since the advent of use of neuraminidase (NA) inhibitors following the 2009 influenza pandemic. 

The researchers hypothesize that blocking host NA modulates the immune response against Aspergillus fumigatus. They demonstrate that NA influences the host response against A. fumigatus in vitro and that oseltamivir increases the susceptibility of mice to pulmonary aspergillosis. Oseltamivir impairs the mouse splenocyte and human peripheral blood mononuclear cell (PBMC) killing capacity of A. fumigatus, and adding NA restores this defect in PBMCs. Furthermore, the sialic acid-binding receptor SIGLEC15 is upregulated in PBMCs stimulated with A. fumigatus. Silencing of SIGLEC15 decrease PBMC killing of A. fumigatus.

They provide evidence that host NA activity and sialic acid recognition are important for anti-Aspergillus defense. NA inhibitors might predispose individuals with severe influenza to invasive aspergillosis. These data shed light on the pathogenesis of invasive fungal infections and may identify potential therapeutic targets.

read more


Related news items

Grants for research on magnesium deficiency and malaria Vidis for Felix Hol and Jeroen de Baaij

1 July 2022 Radboudumc researchers Jeroen de Baaij and Felix Hol both receive an NWO Vidi grant for their research, respectively on magnesium deficiency in type 2 diabetes and on malaria.  read more

Field research on malaria vaccine offers unexpected surprise

23 May 2022 Field research on the effectiveness of a malaria vaccine, came up with unexpected results for an international group of researchers including Benjamin Mordmüller of Radboudumc. The vaccine evokes a broader response against malaria proteins than there are in the vaccine. read more

Rubicon grants awarded to three RIMLS researchers

19 April 2022 Three researchers have received Rubicon funding from NWO/ZonMw. This will enable Elke Muntjewerff, Laura de Vries and Laurens van de Wiel to do research at a foreign research institute for the next two years. read more