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使用磁树脂的联合澄清和亲和度捕获使rAAV5能够有效地从细胞溶解物分离出来
Federico Turco1,2, Adam Wegelius1,2, Ola Lind1
1Cytiva, Björkgatan 30, 753 23 Uppsala, Sweden.
Molecular therapy. Methods & clinical development
|August 28, 2023
概括
这项研究引入了一种新的无过方法,用于净化复合腺相关病毒 (rAAV) 载体. 这种精简的过程大大减少了工业规模基因治疗制造的时间和材料.
科学领域:
- 生物技术是生物技术.
- 基因治疗制造业 基因治疗制造业
- 病毒载体净化 病毒载体净化
背景情况:
- 复合腺相关病毒 (rAAV) 载体对于基因疗法至关重要.
- 工业规模的rAAV净化通常涉及耗时的过和染色学步骤.
研究的目的:
- 开发一种无过的流量捕获方法,以实现高效的rAAV净化.
- 为了减少与工业rAAV制造相关的时间和材料成本.
主要方法:
- 使用了带有磁珠的高梯度磁分离器和AVB亲缘关系联结体.
- 开发了从细胞溶解物中直接捕获和化过程.
主要成果:
- 在不到2小时的时间内从细胞解质中实现了rAAV5净化,回收率为63%.
- 演示了宿主细胞DNA和化物中的蛋白质的3-log减少.
- 消除了初始过和列色谱步骤的需要.
结论:
- 开发的无过方法为工业RAAV净化提供了有价值的替代方案.
- 这种方法显著减少了制造时间和材料使用量,而不会影响回收或纯度.
- 能够更高效,更具成本效益地生产基于rAAV的基因疗法.
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