广泛中和抗体10-1074的粘膜应用保护子免受与细胞相关的SHIV阴道暴露
Karunasinee Suphaphiphat1, Delphine Desjardins1, Valérie Lorin2
1Université Paris-Saclay, Inserm, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France.
Nature communications
|October 6, 2023
概括
具有广泛中和抗体 (bNAbs) 的局部阴道杀菌剂凝保护了非人类灵长类动物免受与细胞相关的猿人免疫缺陷病毒 (SHIV) 的挑战. 这种基于抗体的策略在预防HIV-1传播方面表现有前途.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 微生物学 微生物学
背景情况:
- 由于没有疫苗,正在探索使用广泛中和抗体 (bNAbs) 的被动免疫来预防HIV-1.
- 针对细胞相关病毒传播的bNAbs的有效性,这是主要的感染途径,仍未得到充分研究.
- 通过体液中的感染细胞传播的HIV-1病毒可以逃避基于抗体的免疫力.
研究的目的:
- 为了评估含有抗N-甘氨酸/V3循环bNAb 10-1074.4的局部阴道杀菌剂凝的保护效果.
- 在非人类灵长类动物模型中评估对重复细胞相关的猿人免疫缺陷病毒 (SHIV162P3) 阴道挑战的保护.
- 确定粘膜bNAb输送的潜力,以防止感染细胞介导的HIV-1传播.
主要方法:
- 将HIV-1 bNAb 10-1074制成一种微生物杀菌剂凝,用于局部阴道应用.
- 在非人类灵长类动物模型中,与细胞相关的SHIV162P3重复的阴道挑战.
- 与bNAb治疗组和对照组之间的感染率的比较.
主要成果:
- 配制bNAb的凝提供了显著的保护,防止重复的细胞相关的SHIV162P3阴道挑战.
- 与对照组相比,治疗组的动物的感染率明显较低.
- 治疗组中的六分之五的动物完全免受SHIV感染.
结论:
- 通过粘膜输送强效的bNAbs,如10-1074在阴道凝中,是一种有前途的策略,可以防止由感染细胞介导的HIV-1传播.
- 基于抗艾滋病毒抗体的杀菌剂需要进一步调查,并可能在人类临床试验中使用.
- 这种方法解决了HIV-1预防的关键差距,特别是针对细胞相关病毒传播.
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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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