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  • Title: [A study on screening effective immunization route of anticaries DNA vaccine pcDNA3-gtfB].
    Author: Yang J, Liu T, Zhuang H.
    Journal: Hua Xi Kou Qiang Yi Xue Za Zhi; 2002 Oct; 20(5):374-6. PubMed ID: 12607372.
    Abstract:
    OBJECTIVE: Glucosyltransferase-B (GTF-B) of Streptococcus mutans has been implicated as a principal virulent factor in the development of dental caries. The objective was to use recombined plasmid pcDNA-gtfB expressing multiple antigen of glucosyltransferase-B as gene vaccine to immunize rats through different route, and to investigate the immunization effects of immunization routes. METHODS: A total of 18 Wistar rats were divided into 3 groups, including the quadriceps injection group, the intransal irrigation group and the submandibular gland-targeted injection group. The serum IgG and salivary IgA were assayed by using ELISA after pcDNA3-gtfB immunization. The serum IgG and salivary IgA in different groups were compared using statistical one-way ANOVA. RESULTS: Compared these 3 groups, the serum IgG in the quadriceps injection group was much higher than those of other two groups (P < 0.01), while the salivary IgA of the submandibular gland-targeted injection was much higher than those of other two groups (P < 0.01). CONCLUSION: It is indicated pcDNA3-gtfB is good candidate for anticarious gene vaccine, and submandibular gland-targeted injection is an effective immunization route for stimulating salivary IgA.
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