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Toxins 2010, 2(6), 1336-1356; doi:10.3390/toxins2061336
Review

On the Interaction of Clostridium perfringens Enterotoxin with Claudins

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Leibniz-Institut für molekulare Pharmakologie, Robert-Rössle-Str.10, 13125 Berlin, Germany
* Author to whom correspondence should be addressed.
Received: 5 May 2010 / Revised: 21 May 2010 / Accepted: 4 June 2010 / Published: 8 June 2010
(This article belongs to the Special Issue Enterotoxins)
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Abstract

Clostridium perfringens causes one of the most common foodborne illnesses, which is largely mediated by the Clostridium perfringens enterotoxin (CPE). The toxin consists of two functional domains. The N-terminal region mediates the cytotoxic effect through pore formation in the plasma membrane of the mammalian host cell. The C-terminal region (cCPE) binds to the second extracellular loop of a subset of claudins. Claudin-3 and claudin-4 have been shown to be receptors for CPE with very high affinity. The toxin binds with weak affinity to claudin-1 and -2 but contribution of these weak binding claudins to CPE-mediated disease is questionable. cCPE is not cytotoxic, however, it is a potent modulator of tight junctions. This review describes recent progress in the molecular characterization of the cCPE-claudin interaction using mutagenesis, in vitro binding assays and permeation studies. The results promote the development of recombinant cCPE-proteins and CPE-based peptidomimetics to modulate tight junctions for improved drug delivery or to treat tumors overexpressing claudins.
Keywords: Claudins; Clostridium perfringens enterotoxin; drug delivery; tight junction Claudins; Clostridium perfringens enterotoxin; drug delivery; tight junction
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Veshnyakova, A.; Protze, J.; Rossa, J.; Blasig, I.E.; Krause, G.; Piontek, J. On the Interaction of Clostridium perfringens Enterotoxin with Claudins. Toxins 2010, 2, 1336-1356.

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