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The killing of macrophages by Corynebacterium ulcerans

: Hacker, E.; Ott, L.; Schulze-Luehrmann, J.; Lührmann, A.; Wiesmann, V.; Wittenberg, T.; Burkovski, A.


Virulence 7 (2016), No.1, pp.45-55
ISSN: 2150-5594
ISSN: 2150-5608
DOI: 10.4161/viru
Deutsche Forschungsgemeinschaft DFG
SFB 796;
Journal Article
Fraunhofer IIS ()

Corynebacterium ulcerans is an emerging pathogen transmitted by a zoonotic pathway with a very broad host spectrum to humans. Despite rising numbers of infections and potentially fatal outcomes, data on the molecular basis of pathogenicity are scarce. In this study, the interaction of 2 C. ulcerans isolates - one from an asymptomatic dog, one from a fatal case of human infection - with human macrophages was investigated. C. ulcerans strains were able to survive in macrophages for at least 20hours. Uptake led to delay of phagolysosome maturation and detrimental effects on the macrophages as deduced from cytotoxicity measurements and FACS analyses. The data presented here indicate a high infectious potential of this emerging pathogen.