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.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.