Schistosoma mansoni antigen Sm-p80: prophylactic efficacy using TLR4 agonist vaccine adjuvant glucopyranosyl lipid A-Alum in murine and non-human primate models.

Schistosoma mansoni antigen Sm-p80: prophylactic efficacy using TLR4 agonist vaccine adjuvant glucopyranosyl lipid A-Alum in murine and non-human primate models.
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DOI:
10.1136/jim-2018-000786
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发表时间:
2018-12
期刊:
Journal of investigative medicine : the official publication of the American Federation for Clinical Research
影响因子:
--
通讯作者:
Siddiqui AA
Siddiqui AA
中科院分区:
其他
文献类型:
--
作者:
Zhang W;Ahmad G;Molehin AJ;Torben W;Le L;Kim E;Lazarus S;Siddiqui AJ;Carter D;Siddiqui AA

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Sm-p80是曼氏血吸虫的大亚基,是血吸虫病疫苗的主要候选物。Sm-p80的预防和抗生育功效已在三种动物模型(小鼠、仓鼠和狒狒)中使用多种疫苗配方和方法进行了测试。在我们不断努力提高疫苗效力的过程中,在本研究中,我们使用了佐剂,合成六酰化脂质A衍生物,用重组Sm-p80在铝(GLA- alum)中配制的葡萄糖吡喃酰基脂质A (GLA)。rSm-p80+ gla -明矾免疫方案使小鼠模型的蠕虫负担减少33.33% ~ 53.13%,接种狒狒的蠕虫负担减少38%。所有免疫动物均观察到sm -p80特异性免疫球蛋白(Ig)G、IgG1、IgG2a和IgM反应。通过释放白细胞介素(IL)-2、IL-4、IL-18、IL-21、IL-22和干扰素-γ, rSm-p80+GLA-Alum共给药诱导了辅助性t细胞(Th1、Th2和Th17)的反应。
Sm-p80, the large subunit of Schistosoma mansoni calpain, is a leading candidate for a schistosomiasis vaccine. The prophylactic and antifecundity efficacy of Sm-p80 has been tested in three animal models (mouse, hamster and baboon) using a multitude of vaccine formulations and approaches. In our continual effort to enhance the vaccine efficacy, in this study, we have utilized the adjuvant, synthetic hexa-acylated lipid A derivative, glucopyranosyl lipid A (GLA) formulated in aluminum (GLA-Alum) with recombinant Sm-p80. The rSm-p80+GLA-Alum immunization regimen provided 33.33%–53.13% reduction in worm burden in the mouse model and 38% worm burden reduction in vaccinated baboons. Robust Sm-p80-specific immunoglobulin (Ig)G, IgG1, IgG2a and IgM responses were observed in all immunized animals. The rSm-p80+GLA-Alum coadministration induced a mix of T-helper (Th) cells (Th1, Th2 and Th17) responses as determined via the release of interleukin (IL)-2, IL-4, IL-18, IL-21, IL-22 and interferon-γ.
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