在治疗中断期间,HIV-1抗体3BNC117抑制了人类的病毒反弹
Nature
|June 25, 2016
概括
这项研究表明,3BNC117抗体可以在治疗中断期间延缓HIV-1患者的病毒反弹. 一些患者没有表现出病毒耐药性,这表明长期抑制的可能性.
科学领域:
- 免疫学
- 病毒学
- 临床试验
背景情况:
- 在HIV-1感染者中,抗逆转录病毒治疗中断导致病毒快速反弹.
- 中和抗体提供了在治疗中断期间控制病毒载量的潜在策略.
研究的目的:
- 在分析性治疗中断 (ATI) 期间评估3BNC117的安全性和有效性.
- 评估3BNC117对病毒反弹动态和药物耐药性的影响.
主要方法:
- 这是一项II期的开放性临床试验,涉及13名HIV-1感染者接受了ATI.
- 在规定的时间间隔内注入两次或四次3BNC117 (30 mg/ kg).
- 监测病毒载量,抗体度和病毒耐药性.
主要成果:
- 3BNC117注入剂的耐受性一般很好.
- 观察到病毒反弹的显著延迟:两次输注后5-9周,四次输注后高达19周,与历史对照组的2. 6周相比 (P < 0. 001).
- 新出现的病毒往往表现出更强的抗性,但30%的参与者仍然没有明显的抗性,这表明病毒逃逸延迟或失败.
结论:
- 在ATI过程中,BNC117对潜伏库中出现的HIV-1施加强烈的选择性压力.
- 抗体具有控制病毒载荷和延迟反弹的潜力,一些人表现出持续抑制而没有抵抗力.
- 需要进一步研究3BNC117的剂量和长期疗效.
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