Protective cellular retroviral immunity requires both CD4+ and CD8+ immune T cells

Protective cellular retroviral immunity requires both CD4+ and CD8+ immune T cells
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保护性细胞逆转录病毒免疫需要 CD4 和 CD8 免疫 T 细胞

DOI:
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发表时间:
1991
影响因子:
5.4
通讯作者:
R. Ruprecht
R. Ruprecht
中科院分区:
医学2区
文献类型:
--
作者:
R. Hom;R. Finberg;S. Mullaney;R. Ruprecht

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我们之前发现,使用 3'-叠氮基-3'-脱氧胸苷(也称为齐多夫定或 AZT)联合重组人 α A/D 干扰素进行暴露后化学预防可以完全保护暴露于致死剂量 Rauscher 鼠白血病病毒 (RLV) 的小鼠免受病毒血症和疾病的影响。停止治疗后,超过 90% 的小鼠能够抵抗活 RLV 的再次攻击,从而表现出获得性免疫力。来自免疫小鼠的 4 x 10(7) 细胞的过继细胞转移完全保护了幼稚受体在 RLV 攻击后免受病毒血症和脾肿大的影响。然而,当这些免疫 T 细胞被分为 CD4+ 和 CD8+ 亚群时,当给予任一亚群的 4 x 10(7) T 细胞时,仅发现部分保护。当来自免疫小鼠的 T 细胞亚群重组并以相同数量转移到初始小鼠体内时,再次看到了针对 RLV 攻击的完全保护。我们得出的结论是,细胞免疫本身就具有保护作用,并且 CD4+ 和 CD8+ 细胞类型都是提供针对活病毒攻击的全面保护所必需的。
We have found previously that postexposure chemoprophylaxis with 3'-azido-3'-deoxythymidine (also known as zidovudine or AZT) in combination with recombinant human alpha A/D interferon fully protected mice exposed to a lethal dose of Rauscher murine leukemia virus (RLV) against viremia and disease. After cessation of therapy, over 90% of these mice were able to resist rechallenge with live RLV, thus demonstrating an acquired immunity. Adoptive cell transfer of 4 x 10(7) cells from immunized mice fully protected naive recipients from viremia and splenomegaly after RLV challenge. However, when these immune T cells were fractionated into CD4+ and CD8+ subpopulations, only partial protection was found when 4 x 10(7) T cells of either subset were given. Full protection against RLV challenge was seen again when the T-cell subsets from immunized mice were recombined and transferred at the same number into naive mice. We conclude that cellular immunity alone is protective and that both CD4+ and CD8+ cell types are required for conferring full protection against live virus challenge.
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DOI: 10.1097/00007890-198906000-00024
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影响因子: 6.2
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