폐렴구균 DNA 백신의 유효성 평가

• 영문명: Evaluation of a Streptococcus pneumoniae DNA Vaccine Efficacy
• 발행기관: 대한약학회
• 저자명: 이주희(Jue Hee Lee) 한용문(Youngmoon Han)
• 간행물 정보: 『약학회지』제49권 제6호 (2005년), 484~489쪽, 전체 6쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2005.12.31

영문 초록

Streptococcus pneumoniae is the leading cause of pneumonia and bacterial meningitis. The current polysaccharide vaccine has been reported ineffective in elderly adults and children less than 2 years of age. Thus, in recent many researchers have been focusted on a different approach, DNA vaccine. In our laboratory, we developed a Streptococcus pneumoniae DNA(SPDNA) vaccine. This SPDNA vaccine was formulated by inserting the resion encoding part of the capsule in the S.pneumoniae into the LAMP-1. In present work, with use of the SPDNA vaccine we attmpted to to establish a certain methodology useful for evaluation of effectiveness and immunoresponse of a DNA vaccine. Results showed that the subcutaneous route was the most effective for production of antisera specific for S. pneumoniae in mice. By isotyping analyses, IgM, IgG1, IgG2a, and IgG2b were determined. In addition, INF-γ and IL-4 were predominantly detected. Combination of those data resulted in a pattern of IgG1IL-4, which indicates the immunity towards the Th1 response predominantly. Furthermore, the SPDNA vaccination induced resistance of the CD4+T lymphocyte-depleted mice against disseminated pneumococcal infection. These data appear to be possibly due to activation of CD8+T cell-activation. Taken together, this methodology can be applied for evaluating efficacy and mode of action of a DNA vaccine as minimum criteria.

키워드

DNA vaccine S. pneumoniae isotyping cytokine mode of action evaluation