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Int J Med Microbiol. 2004 Apr;293(7-8):571-6.

The adenylate cyclase toxin from Bordetella pertussis--a novel promising vehicle for antigen delivery to dendritic cells.

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Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic.


Bordetella pertussis secretes an adenylate cyclase toxin (CyaA or ACT) that targets primarily cells expressing the alphaMbeta2 integrin (CD11b/CD18) receptor. This toxin can deliver its N-terminal catalytic AC domain (400 amino acid residues) into the cytosol directly across the cytoplasmic membrane. Various heterologous CD8+, as well as CD4+ T-cell epitopes have been engineered into genetically detoxified CyaA and the resulting toxoids were successfully used as vectors for delivery of inserted epitopes into antigen-presenting cells. Upon processing and presentation, these recombinant CyaAs trigger specific MHC class I and/or class II-restricted T-cell responses both in vitro and in vivo.

[Indexed for MEDLINE]

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