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자료유형
학술저널
저자정보
저널정보
대한면역학회 Immune Network Immune Network Vol.5 No.2
발행연도
2005.6
수록면
89 - 98 (10page)

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초록· 키워드

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DNA vaccination represents an anticipated approach for the control of numerous infectious diseases. Used alone, however, DNA vaccine is weak immunogen inferior to viral vectors. In recent, heterologous prime-boost vaccination leads DNA vaccines to practical reality. Methods: We assessed prime-boost immunization strategies with a DNA vaccine (minigene, gB<sub>498-505</sub> DNA) and recombinant vaccinia virus (vvgB<sub>498-505</sub>) expressing epitope gB<sub>498-505</sub> (SSIEF ARL) of CD8+ T cells specific for glycoprotein B (gB) of herpes simplex virus (HSV). Animals were immunized primarily with gB<sub>498-505</sub> epitope-expressing DNA vaccine/recombinant vaccinia virus and boosted with alternative vaccine type expressing entire Ag. Results: In prime-boost protocols using vvgBw (recombinant vaccinia virus expressing entire Ag) and vvgB<sub>498-505</sub>, CD8+ T cell-mediated immunity was induced maximally at both acute and memory stages if primed with vvgBw and boosted with vvgB<sub>498-505</sub> as evaluated by CTL activity, intracellular IFN-staining, and MHC class I tetramer staining. Similarly gB<sub>498-505</sub> DNA prime-gBw DNA (DNA vaccine expressing entire Ag) boost immunization elicited the strongest CD8+ T cell responses in protocols based on DNA vaccine. However, the level of CD8+ T cell-mediated immunity induced with prime-boost vaccination using DNA vaccine expressing epitope or entire Ag was inferior to those based on vvgBw and vvgB<sub>498-505</sub>. Of particular interest CD8+ T cell-mediated immunity was optimally induced when vvgB<sub>498-505</sub> was used to prime and gB DNA was used as alternative boost. Especially CD7+ T cell responses induced by such protocol was longer lasted than other protocols. Conclusion: These facts direct to search for the effective strategy to induce optimal CD8+ T cell-mediated immunity against cancer and viral infection.

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