用不同的加工方法改善不同血清型的AAV生产产量和质量
Ashish Khaparde1, Riya Patra1,2, Shomereeta Roy1
1GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India.
ACS omega
|June 16, 2025
概括
最大限度地提高腺相关病毒 (AAV) 产量对于基因疗法可访问性至关重要. 这项研究优化了AAV净化,表明亲和色谱显著改善了AAV生产的恢复和质量.
科学领域:
- 基因治疗 基因治疗
- 生物技术是生物技术.
- 病毒载体生产病毒载体生产
背景情况:
- 基因相关病毒 (AAV) 是关键的基因疗法载体,其潜力仅限于生产产量.
- 目前实验室规模的AAV产量在10^12-10^14vgc/L之间,影响成本和可访问性.
- 优化上游和下游流程对于提高AAV生产效率至关重要.
研究的目的:
- 为了比较两个净化方法 (CsCl超离心和亲和柱色谱) 进行腺相关病毒 (AAV) 恢复.
- 优化AAV产量,评估对产品质量和传导效率的影响.
- 提高整体生产能力,降低基于AAV的基因疗法的成本.
主要方法:
- 使用粘附细胞制造工艺用于AAV生产.
- 从细胞溶解物 (CsCl超离心) 和介质上浮物 (亲和染色) 中比较AAV的净化.
- 使用这两种方法,对AAV6,AAV8和AAV9血清类型的量化净化AAV产量.
主要成果:
- 获得的综合收益率为2.25 × 10^13 (AAV6),1.11 × 10^14 (AAV8) 和7.32 × 10^13 (AAV9) vg/L.
- 亲属性染色学从介质上游生物中获得更高的百分比恢复 (AAV6: 88.35%,AAV8: 96.67%,AAV9: 93.54%) 的结果.
- 与之前的报告相比,AAV9的产量增加了1.5倍;染色体学也改善了转导率.
结论:
- 亲和染色法是AAV净化的一种优越方法,提供更高的回收和更好的产品质量.
- 优化的净化策略显示了大幅扩大AAV生产能力的潜力.
- 对血清型特异性化pH的进一步研究可以进一步完善AAV净化过程.
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