多次治疗中断和保护HIV特异性CD4 T细胞使得CD8 T细胞的持续反应和病毒控制成为可能
Anshika Jain1, Gaspar E Canepa1, Mei-Ling Liou1
1American Gene Technologies International, Inc., Rockville, MD, United States.
Frontiers in medicine
|May 29, 2024
概括
这项研究表明,AGT103-T基因治疗与分析性治疗中断 (ATI) 结合,可以安全控制人类免疫缺陷病毒 (HIV). 多个ATI增强了免疫反应,导致持续的病毒抑制和稳定的CD4计数.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 基因治疗 基因治疗
背景情况:
- 人类免疫缺陷病毒 (HIV) 是一个重大的全球卫生挑战.
- 新的策略对于有效的艾滋病毒控制至关重要.
- AGT103-T是一种细胞和基因疗法产品,此前已经对其安全性和持久性进行了评估.
研究的目的:
- 评估AGT103-T治疗在分析性治疗中断 (ATI) 期间对人类免疫缺陷病毒 (HIV) 控制的影响.
- 在接受AGT103-T的患者中评估多步ATI方法的安全性和有效性.
- 研究ATI在增强HIV特异性免疫反应中的作用.
主要方法:
- 接受AGT103-T的6名患者被纳入ATI研究,暂停抗逆转录病毒疗法 (ART) 直到病毒载荷标准达到.
- 一项协议修正允许第二次ATI,第一个ATI作为"自动接种疫苗".
- 病毒载量,CD4计数和HIV特异性CD8T细胞反应在整个ATI期间和恢复ART后都被监测.
主要成果:
- 所有患者在ATI期间都经历了病毒反弹,伴随着HIV特异性免疫反应的显著扩张,包括CD8计数的五倍增加.
- 第二次ATI表明持续或增加了Gag特定的CD8T细胞,并显著降低了峰值病毒血症和病毒设定点,低于25,000副本/毫升.
- 在恢复ART后,参与者比第一次ATI更快地实现病毒控制,保持CD4计数在基线10%以内,没有不良事件或药物耐药性.
结论:
- 结合多种ATI的AGT103-T基因治疗是一种安全有效的策略,可以实现持久的HIV病毒控制.
- 观察到的CD8数量增加和病毒抑制突显了这种综合方法的潜力.
- 未来的以治愈艾滋病毒为导向的试验应该考虑结合多个ATI来增强用于病毒控制的CD8 T细胞诱导.
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