Calcineurin inhibitors reduce NFAT‐dependent expression of antifungal pentraxin‐3 by human monocytes. Issue 3 (1st April 2019)

• Record Type: Journal Article
• Authors: Bendíčková, Kamila; Tidu, Federico; De Zuani, Marco; Kohoutková, Marcela Hortová; Andrejčinová, Ivana; Pompeiano, Antonio; Bělášková, Silvie; Forte, Giancarlo; Zelante, Teresa; Frič, Jan
• Is Part Of: Journal of leukocyte biology. Volume 107:Issue 3(2020)
• Page Start: 497
• Page End: 508
• Publication Date: 2019-04-01
• Subjects: antifungal response -- cyclosporine A -- pattern recognition receptor signaling -- Tacrolimus; Leucocytes -- Periodicals; Reticulo-endothelial system -- Periodicals; 571.96
• DOI: 10.1002/JLB.4VMA0318-138R
• Languages: English
• ISSNs: 0741-5400

Abstract

Abstract: Calcineurin (CN) inhibitors are effective clinical immunosuppressants but leave patients vulnerable to potentially fatal fungal infections. This study tested the hypothesis that CN inhibition interferes with antifungal immune defenses mediated by monocytes. We showed that NFAT is expressed by human monocytes, and is activated by exposure to fungal ligands. We confirmed that NFAT translocation potently activated target gene transcription using a human monocytic reporter cell line. Inhibition of CN‐NFAT by cyclosporine A significantly reduced monocyte production of TNF‐α, IL‐10, and MCP‐1 proteins in response to pattern recognition receptor ligands as well as to Aspergillus fumigatus conidia. Moreover, we revealed that human monocytes express the antifungal protein pentraxin‐3 under control of NFAT. In conclusion, clinical CN inhibitors have the potential to interfere with the novel NFAT‐dependent pentraxin‐3 pathway as well as antifungal cytokine production in human monocytes, thereby impeding monocyte‐mediated defenses against fungal infection in immune‐suppressed patients. Abstract : NFAT is expressed by human monocytes and regulates expression of the antifungal protein pentraxin‐3 in response to stimulation by pathogen‐derived molecules.