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Yersinia pestis and plague: an updated view on evolution, virulence determinants, immune subversion, vaccination and diagnostics

Abstract : Plague is a vector-borne disease caused by Yersinia pestis. Transmitted by fleas from rodent reservoirs, Y. pestis emerged less than 6000 years ago from an enteric bacterial ancestor through events of gene gain and genome reduction. It is a highly remarkable model for the understanding of pathogenic bacteria evolution, and a major concern for public health as highlighted by recent human outbreaks. A complex set of virulence determinants, including the Yersinia outer membrane proteins (Yops), the broad range pro-tease Pla, pathogen-associated molecular patterns (PAMPs) and iron capture systems play critical roles in the molecular strategies that Y. pestis employs to subvert the human immune system, allowing unrestricted bacterial replication in lymph nodes (bubonic plague) and in lungs (pneumonic plague). Some of these immunogenic proteins as well as the capsular antigen F1 are exploited for diagnostic purposes, which are critical in the context of the rapid onset of death in the absence of antibiotic treatment (less than a week for bubonic plague and less than 48 h for pneumonic plague). In here, we review recent research advances on Y. pestis evolution, virulence factors function, bacterial strategies to subvert mammalian innate immune responses, vaccination and problems associated to pneumonic plague diagnosis.
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Contributor : Christian E. Demeure <>
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Christian E. Demeure, Olivier Dussurget, Guillem Mas Fiol, Anne-Sophie Le Guern, Cyril Savin, et al.. Yersinia pestis and plague: an updated view on evolution, virulence determinants, immune subversion, vaccination and diagnostics. Microbes and Infection, Elsevier, 2019, 21 (5-6), pp.202-212. ⟨10.1016/j.micinf.2019.06.007⟩. ⟨pasteur-02493697⟩

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