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마우스에서 살모넬라 감염증 예방을 위한 신개념 Salmonella Typhimurium 불활화 사균체에 최적 adjuvant 선택을 위한 효능 비교 시험
문자영,Enkhsaikhan Ochirkhuyag,김원경,이준우,조영규,곽길한,박병용,허진 한국동물위생학회 2020 韓國家畜衛生學會誌 Vol.43 No.2
This study was carried out to examine a novel inactivated Salmonella Typhimurium (S. Typhimurium) vaccine candidate for protection of mice against salmonellosis by immunization of BALB/c mice using various type adjuvant. The novel type-inactivated vaccine candidate was constructed by adding Chlor-hexidine digluconate solution. BALB/c mice were divided into 6 groups of 15 mice apiece. The mice were intramuscularly (IM) primed at 6 weeks of age and were IM boosted 8 weeks of age. Groups A and B mice were injected with sterile phosphate-buffered saline as controls; group C mice were in-oculated with 5×108 cells/100 μL of formalin-inactivated S. Typhimurium cells and adjuvant ISA70; groups D∼F mice were immunized with 5×108 cells/100 μL of the inactivated vaccine candidate and adjuvant ISA70, adjuvant IMS1313 and adjuvant IMS1313 containing 30 μg/mL of GI24, respectively. All mice (except group A mice) were orally challenged with a virulent S. Typhimurium strain at 10 weeks of age. Mice from groups C-F had significantly increased IgG levels compared to control groups (A-B) mice. The levels of splenocyte IFN-γ and IL-4 in mice of all groups were measured by ELISA, resulting in increased immunity in group F mice compared to those of groups A-E mice. These data suggested that systemic and cell-mediated immune responses were highly induced by IM immunization with the vaccine candidate and adjuvant IMS1313 containing GI24. Furthermore, clinical signs such as death were observed in only 20% of group F mice after virulent Salmonella strain challenge, however, groups B and C (100%), and groups D and E (60%) mice died. This data suggested that mice immunized by intramuscular prime and booster with this vaccine candidate and adjuvant IMS1313 containing GI24 ef-fectively protected mice from salmonellosis.
가금티푸스 예방을 위한 adjuvant로서 mastoparan V1을 사용한 포르말린-불활화 Salmonella Gallinarum 사균체 백신의 효능 평가
문자영,곽길환,Enkhsaikhan Ochirkhuyag,김선민,이준우,조영규,김원경,방우영,배창환,허 진 한국동물위생학회 2019 韓國家畜衛生學會誌 Vol.42 No.4
Mastoparan V1 was used as adjuvant of formalin-inactivated Salmonella Gallinarum whole cells vaccine against fowl typhoid in a chicken model. The 75 brown nick chickens were equally divided into 5 groups, and all chickens of each group were immunized at 6 weeks of age (0 WPPI; weeks prime post immunization), and at 9 weeks of age (3 WPPI) (except group B). Group A chickens were intra-muscularly (IM) inoculated with 500 uL of sterile phosphate-buffered saline (PBS), and group B chick-ens were subcutaneously immunized with 0.2 ml containing 5×107 viable vaccine strain/bird. The chick-ens in groups C∼E were IM inoculated with approximately 3×109 cells/0.5 mL of formalin-inactivated the S. Gallinarum whole cells, approximately 3×109 cells/0.5 mL of formalin-inactivated the S. Gallinarum whole cells with mastoparan V1 as adjuvant, and 0.5 mL of PBS, respectively. S. Gallinarum outer membrane proteins-specific serum IgG titers were considerably higher in groups B∼D than in groups A and E. However, the levels of IFN- in groups B and D only than in groups A and E were sig-nificantly higher. Following oral challenge with virulent wild-type S. Gallinarum, no chicken in groups A (no challenge group) and B was dead, and only 30% of chickens in group D was dead. However, 70% of chickens in group C and all chickens in group E were dead after oral challenge. The results of this study demonstrated that IM immunization with approximately 3×109 of the formalin-inactivated S. Gallinarum whole cells containing mastoparan V1 induced robust antibody and cell-mediated immune responses in chickens. The whole cells also conferred protection against infection with wild-type S. Gallinarum.