Cytoskeleton as an emerging target of anthrax toxins

Toxins (Basel). 2012 Feb;4(2):83-97. doi: 10.3390/toxins4020083. Epub 2012 Feb 6.

Abstract

Bacillus anthracis, the agent of anthrax, has gained virulence through its exotoxins produced by vegetative bacilli and is composed of three components forming lethal toxin (LT) and edema toxin (ET). So far, little is known about the effects of these toxins on the eukaryotic cytoskeleton. Here, we provide an overview on the general effects of toxin upon the cytoskeleton architecture. Thus, we shall discuss how anthrax toxins interact with their receptors and may disrupt the interface between extracellular matrix and the cytoskeleton. We then analyze what toxin molecular effects on cytoskeleton have been described, before discussing how the cytoskeleton may help the pathogen to corrupt general cell processes such as phagocytosis or vascular integrity.

Keywords: actin; anthrax toxins; cytoskeleton; phagocytosis; vascular integrity.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Antigens, Bacterial / metabolism
  • Antigens, Bacterial / toxicity*
  • Bacillus anthracis / pathogenicity
  • Bacillus anthracis / physiology*
  • Bacterial Toxins / metabolism
  • Bacterial Toxins / toxicity*
  • Cytoskeleton / drug effects*
  • Extracellular Matrix / drug effects
  • Host-Pathogen Interactions
  • Humans
  • Microfilament Proteins
  • Neoplasm Proteins / metabolism
  • Protein Binding / drug effects
  • Receptors, Cell Surface / metabolism

Substances

  • ANTXR1 protein, human
  • Antigens, Bacterial
  • Bacterial Toxins
  • Microfilament Proteins
  • Neoplasm Proteins
  • Receptors, Cell Surface
  • anthrax toxin