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Research Paper

The killing of macrophages by Corynebacterium ulcerans

, , , , , & show all
Pages 45-55 | Received 16 Oct 2015, Accepted 20 Nov 2015, Published online: 29 Dec 2015
 

Abstract

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 20 hours. 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.

Disclosure of Potential Conflicts of Interest

No potential conflicts of interest were disclosed.

Funding

The project was supported by the Deutsche Forschungsgemeinschaft in frame of SFB796 (A4, B8 and MGK).

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