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Infect. Immun., 02 1997, 544-550, Vol 65, No. 2
N Mielcarek, J Cornette, AM Schacht, RJ Pierce, C Locht, A Capron and G Riveau
One of the current goals in vaccine development is the noninvasive
administration of protective antigens via mucosal surfaces. In this
context, the gut-associated lymphoid tissues have already been extensively
explored. Vaccination via the nasal route has only recently been the focus
of intensive investigation, and no live vector specifically designed for
the respiratory mucosa is yet available. In this study we show that
intranasal administration of the recombinant Bordetella pertussis BPGR60,
producing the Schistosoma mansoni 28-kDa glutathione S-transferase
(Sm28GST) protective antigen fused to filamentous hemagglutinin, induces
priming in mice for the production of serum antibodies. In addition to
significant levels of anti-Sm28GST immunoglobulin A (IgA) antibodies, high
levels of anti-Sm28GST serum antibodies were obtained after intranasal
boost with the purified antigen or infection with S. mansoni following
intranasal priming with BPGR60. These antibodies were of the IgG1, IgG2a,
and IgG2b isotypes, suggesting a mixed immune response. No priming was
observed in animals that had received nonrecombinant B. pertussis or
purified Sm28GST, indicating specific priming by BPGR60. This priming was
also evident in immune protection against S. mansoni challenge. Significant
protection against worm burden and egg output was obtained in mice primed
with BPGR60 and intranasally boosted with purified Sm28GST. A lower but
still significant degree of protection against egg output was also obtained
in mice infected with a single dose of BPGR60. These results indicate that
intranasal administration of recombinant B. pertussis can prime for serum
antibody responses against a foreign antigen and for heterologous
protection.
Copyright © 1997, American Society for Microbiology
Intranasal priming with recombinant Bordetella pertussis for the induction of a systemic immune response against a heterologous antigen
Laboratoire des Relations Hotes-Parasite et Strategies Vaccinales, INSERM U167, Institut Pasteur de Lille, France.
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