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使用多列反流溶剂梯度净化 (MCSGP) 丰富全AAV2

Julia M Müller1,2, Tereza Müllerová1, Daniela Tobler1

  • 1Institute of Pharma Technology and Biotechnology, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland.

Biotechnology and bioengineering
|June 5, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种连续的多列逆流溶剂梯度净化 (MCSGP) 过程,以分离完整和空的腺相关病毒 (AAV) 囊. 这种新方法显著提高了囊体的纯度和恢复,这对于基因疗法应用至关重要.

关键词:
在 AAV AAV AAV 中.腺相关病毒病毒.离子交换色谱学 离子交换色谱学连续的净化净化工作.完全/空的分离方式多列逆流溶剂梯度净化 (MCSGP) 是一种方法.

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科学领域:

  • 生物技术是生物技术.
  • 病毒载体净化 病毒载体净化
  • 基因治疗 基因治疗

背景情况:

  • 基因相关病毒 (AAV) 是基因治疗中的关键传递载体,但分离满和空囊是具有挑战性的.
  • 空囊可以降低AAV产品的治疗效果,并降低AAV产品的安全性.

研究的目的:

  • 开发和演示一个连续的多列逆流溶剂梯度净化 (MCSGP) 工艺,以提高AAV体分离.
  • 改进净化AAV产品中完全到空的病毒囊的比例.

主要方法:

  • 适应离子交换染色学从批量到使用双列MCSGP系统的连续操作.
  • 实施6个周期的MCSGP用于AAV净化.
  • 使用滴滴数字PCR (ddPCR) 和冷传输电子显微镜 (cryo-TEM) 量化全体含量.

主要成果:

  • MCSGP将全囊蛋白含量从30%提高到68% (ddPCR) 和27%提高到61% (冷-TEM).
  • 该过程克服了收益率-纯度权衡,增强了全面的资本收益回收.
  • 与批量方法相比,生产率提高了高达23%,缓冲器消耗减少了高达27%.

结论:

  • 双柱MCSGP工艺是高纯度AAV净化的一个可行的概念验证.
  • 通过提高生产率和减少缓冲器使用,MCSGP提供了经济和环境的好处.
  • 这种持续的净化方法可以支持日益增长的对基因治疗中高质量的AAV产品的需求.