Protective host defense against disseminated candidiasis is impaired in mice expressing human interleukin-37.

van de Veerdonk FL, Gresnigt MS, Oosting M, van der Meer JW, Joosten LA, Netea MG, Dinarello CA (2014) Protective host defense against disseminated candidiasis is impaired in mice expressing human interleukin-37. Front Microbiol 5, 762.

Abstract

The effect of the anti-inflammatory cytokine interleukin-37 (IL-37) on host defense against Candida infections remains unknown. We assessed the role of IL-37 in a murine model of disseminated candidiasis using mice transgenic for human IL-37 (hIL-37Tg). Upon exposure to Candida albicans pseudohyphae, macrophages from hIL-37Tg mice release 39% less TNFα compared to cells from wild-type (WT) mice (p = 0.01). In vivo, hIL-37Tg mice displayed a decreased capacity to recruit neutrophils to the site of infection. These defects were associated with increased mortality and organ fungal growth in hIL-37Tg compared to WT mice. We conclude that IL-37 interferes with the innate protective anti-Candida host response by reducing the production of proinflammatory cytokines and suppressing neutrophil recruitment in response to Candida, resulting in an increased susceptibility to disseminated candidiasis.

Leibniz-HKI-Autor*innen

Mark Gresnigt

Identifier

doi: 10.3389/fmicb.2014.00762

PMID: 25620965