| Literature DB >> 22289177 |
Gina M Donato1, Cynthia S Goldsmith, Christopher D Paddock, Joshua C Eby, Mary C Gray, Erik L Hewlett.
Abstract
Bordetella pertussis adenylate cyclase toxin (ACT) intoxicates cells by producing intracellular cAMP. B. pertussis outer membrane vesicles (OMV) contain ACT on their surface (OMV-ACT), but the properties of OMV-ACT were previously unknown. We found that B. pertussis in the lung from a fatal pertussis case contains OMV, suggesting an involvement in pathogenesis. OMV-ACT and ACT intoxicate cells with and without the toxin's receptor CD11b/CD18. Intoxication by ACT is blocked by antitoxin and anti-CD11b antibodies, but not by cytochalasin-D; in contrast, OMV-ACT is unaffected by either antibody and blocked by cytochalasin-D. Thus OMV-ACT can deliver ACT by processes distinct from those of ACT alone. Copyright ÂEntities:
Mesh:
Substances:
Year: 2012 PMID: 22289177 PMCID: PMC3288663 DOI: 10.1016/j.febslet.2012.01.032
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124