Particulate vaccine candidate for Japanese encephalitis induces long-lasting virus-specific memory T lymphocytes in mice.

Particulate vaccine candidate for Japanese encephalitis induces long-lasting virus-specific memory T lymphocytes in mice.
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日本脑炎候选颗粒疫苗可在小鼠体内诱导持久的病毒特异性记忆 T 淋巴细胞。

DOI:
10.1016/s0264-410x(96)00180-6
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发表时间:
1997
期刊:
影响因子:
5.5
通讯作者:
Ennis,FA
Ennis,FA
中科院分区:
医学3区
文献类型:
--
作者:
Konishi,E;Win,KS;Kurane,I;Mason,PW;Shope,RE;Ennis,FA

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我们以前报道过,由前膜蛋白(prM)和包膜蛋白(E)组成的细胞外颗粒(EPs)从编码日本脑炎(JE)病毒prM和E基因的重组牛痘病毒感染的细胞中释放。本研究以乙脑病毒特异性抗体和特异性T淋巴细胞为免疫原,观察了EPs对乙脑病毒特异性抗体和特异性T淋巴细胞的诱导作用。将6 - 8周龄的雄性Balb c小鼠腹腔内接种一次或两次(间隔3周)含有1 μg E的纯化EP(不含佐剂)。第二次免疫后3周,检测到中和抗体,脾细胞增殖,抗乙脑病毒抗原。免疫后10个月,检测到中和抗体和乙脑病毒特异性T淋巴细胞。从EP免疫小鼠获得的脾细胞在体外用活的乙脑病毒刺激,表达乙脑病毒特异性的细胞毒活性。用抗CD 3抗体和补体处理可降低细胞毒活性。这些结果表明,用EP免疫小鼠诱导持久的特异性抗体和记忆T细胞。
We previously reported that extracellular particles (EPs) composed of premembrane (prM) and envelope (E) proteins were released from cells infected with recombinant vaccinia viruses encoding Japanese encephalitis (JE) virus prM and E genes. In the present study, EPs were evaluated for induction of JE virus-specific antibody and specific T lymphocytes in mice. Six- to 8-week-old male Balb c mice were inoculated intraperitoneally once or twice (at a 3-week interval) with purified EPs containing 1 μg of E without adjuvant. Neutralizing antibody was detected and spleen cells proliferated against JE viral antigen 3 weeks after the second immunization with EPs. Neutralizing antibody and JE virus-specific T lymphocytes were also detected 10 months after immunization with EPs containing 2 μg of E. Spleen cells obtained from EP-immunized mice and stimulated in vitro with live JE virus, expressed JE virus-specific cytotoxic activity. The cytotoxic activity was reduced by treatment with anti-CD3 antibody and complement. These results indicate that immunization with EPs induces long-lasting specific antibody and memory T cells in mice.
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