Key tissue targets responsible for anthrax-toxin-induced lethality

Shihui Liu, Yi Zhang, Mahtab Moayeri, Jie Liu, Devorah Crown, Rasem J. Fattah, Alexander N. Wein, Zu Xi Yu, Toren Finkel, Stephen H. Leppla

Research output: Contribution to journalArticle

Abstract

Bacillus anthracis, the causative agent of anthrax disease, is lethal owing to the actions of two exotoxins: anthrax lethal toxin (LT) and oedema toxin (ET). The key tissue targets responsible for the lethal effects of these toxins are unknown. Here we generated cell-type-specific anthrax toxin receptor capillary morphogenesis protein-2 (CMG2)-null mice and cell-type-specific CMG2-expressing mice and challenged them with the toxins. Our results show that lethality induced by LT and ET occurs through damage to distinct cell types; whereas targeting cardiomyocytes and vascular smooth muscle cells is required for LT-induced mortality, ET-induced lethality occurs mainly through its action in hepatocytes. Notably, and in contradiction to what has been previously postulated, targeting of endothelial cells by either toxin does not seem to contribute significantly to lethality. Our findings demonstrate that B. anthracis has evolved to use LT and ET to induce host lethality by coordinately damaging two distinct vital systems.

Original languageEnglish (US)
Pages (from-to)63-68
Number of pages6
JournalNature
Volume501
Issue number7465
DOIs
StatePublished - 2013
Externally publishedYes

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Key tissue targets responsible for anthrax-toxin-induced lethality'. Together they form a unique fingerprint.

  • Cite this

    Liu, S., Zhang, Y., Moayeri, M., Liu, J., Crown, D., Fattah, R. J., Wein, A. N., Yu, Z. X., Finkel, T., & Leppla, S. H. (2013). Key tissue targets responsible for anthrax-toxin-induced lethality. Nature, 501(7465), 63-68. https://doi.org/10.1038/nature12510