Expression of human CEACAMs promotes inflammation and organ damage during systemic Candida albicans infection in mice
Klaile, E.; Müller, M. M.; Sonnberger, J.; Bothe, A.-K.; Brehme, S.; Ehrenpfordt, J.; Klassert, T.; Kuhn, S.; Dietert, K.; Kershaw, O.; Praetorius, J.-P.; Figge, M. T.; Bauer, T.; Gebhardt, A.; Mall, G.; Jacobsen, I. D.; Slevogt, H.
Show abstract
Invasive candidiasis is a fungal infection characterized by a high mortality rate. CEACAM family receptors play a crucial role in regulating innate responses of both leukocytes and epithelia. Human CEACAM3, CEACAM5 and CEACAM6 receptors recognize C. albicans and are expressed in transgenic CEABAC10 mice. In a murine C. albicans infection model, CEABAC10 mice exhibited a shortened survival period attributed to an early cytokine storm, an exacerbated acute phase response, and heightened systemic inflammation compared to their wild-type littermates. The livers and kidneys of CEABAC10 mice displayed intensified purulent necrotizing inflammation, accompanied by increased infiltration of neutrophils and macrophages. Our in vivo and in vitro data indicated that the expression of CEACAM6 on monocytes of CEABAC10 mice caused the elevated cytokine levels and the subsequent exacerbation of the acute phase response upon C. albicans infection, resulting in decreased survival.
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