使用预测性先天免疫反应的腺相关病毒载体中存在的空体的免疫性风险评估
Nicole Jarvi1, Kirk Hofman1, Aditi Venkatesh1
1Department of Pharmaceutical Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA.
Journal of pharmaceutical sciences
|September 26, 2024
概括
空的腺相关病毒 (AAV) 囊强烈激活先天性免疫细胞,如树突细胞和自然杀手 (NK) 细胞,影响基因治疗的安全性和有效性. 了解这些免疫性风险对于开发有效的治疗方法至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 基因治疗 基因治疗
- 病毒学 病毒学
背景情况:
- 基因疗法载体的免疫性,特别是基因相关病毒 (AAV) 载体,是药物安全性和疗效的关键问题.
- 了解AAV载体的先天免疫系统激活对于预测潜在的不良影响和自适应性免疫反应至关重要.
研究的目的:
- 为了研究树突细胞,自然杀手 (NK) 细胞和补充系统对AAV8囊的先天免疫反应.
- 在基因疗法应用中评估与空的AAV囊相关的免疫性风险.
主要方法:
- 实验室试验用于评估空和满AAV8囊对人类和小鼠树突细胞的激活.
- 进行了自然杀手 (NK) 细胞降粒试验,以评估对混合和单个囊类型的反应.
- 补充激活通过量化血清补充C3a在不同AAV8囊配方的存在来测量.
主要成果:
- 与全囊相比,空的AAV8囊诱导了较强的促炎性细胞因子的产生和迁移在树突细胞中.
- 完整的AAV8囊剂增加了树突细胞上协同刺激标记物的表达.
- 空和满AAV8囊的混合物显示NK细胞 (TNF-α,IFN-γ,CD107a) 和补充系统 (C3a) 的激活比单个囊类型更强.
结论:
- 空的AAV囊体的存在显著促进了先天性免疫激活,突出了需要建立在基因治疗中使用它们的可接受限制.
- 试验室内天生的免疫激活试验为评估AAV基因疗法等新生物模式的免疫性风险提供了有价值的机制性见解.
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