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Updated: May 15, 2026

Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
Published on: February 22, 2019
A CpG-containing oligodeoxynucleotide adjuvant for acellular pertussis vaccine improves the protective response
Catpagavalli Asokanathan1, Michael Corbel, Dorothy Xing
1National Institute for Biological Standards and Control (NIBSC); South Mimms, Potters Bar, UK.
Abstract:
We investigated the adjuvant effect of CpG ODN alone or in combination with aluminum hydroxide on the immune response to the three main antigens presented in current acellular pertussis vaccines: pertussis toxoid, filamentous haemagglutinin and pertactin. The development of protection in mice was investigated for the intra-peritoneal and intra-nasal immunisation routes. The results showed that CpG ODN alone, or in combination with aluminum hydroxide, gave enhancement in anti-pertussis toxin, anti- filamentous haemagglutinin and especially anti-pertactin titers after mucosal immunisation. Higher macrophage NO levels indicating activation were found when the antigens were co-formulated with CpG ODN. Vaccines containing CpG ODN gave enhanced humoral and CMI responses with a shift toward Th-1 and increased protection against challenge infection with B.pertussis in mice.
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