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多角光散射作为一个lentivirus净化过程分析技术分析技术.

Sobhana A Sripada1,2, Eduardo Barbieri1,3, Shriarjun Shastry1,4,2

  • 1Department of Chemical and Biomolecular Engineering, NC State University, 911 Partners Way, Raleigh, North Carolina 27606, United States.

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概括

一种使用大小排除色谱与多角度光散射 (SEC-MALS) 的新方法快速分析了透视向量 (LVV) 质量. 该工具通过准确测量LVV粒子计数和细胞和基因疗法的纯度来帮助生物制造.

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科学领域:

  • 生物技术是生物技术.
  • 分析化学 分析化学
  • 基因治疗 基因治疗

背景情况:

  • 病毒载体 (LVV) 对于细胞疗法至关重要,但其稳定性有限,需要强大的分析方法.
  • 在生物制造过程中监测LVV标位和活性对于确保产品质量和治疗疗效至关重要.

研究的目的:

  • 开发和验证一种快速,可重复的分析方法来评估lentiviral载体质量.
  • 使用尺寸排除色谱与多角度光散射检测 (SEC-MALS) 结合来确定LVV的大小,纯度和颗粒数量.

主要方法:

  • 使用尺寸排除色谱与多角度光散射检测 (SEC-MALS) 结合用于LVV分析.
  • 通过直角方法证实SEC-MALS的发现,包括动态光散射 (DLS) 和传输电子显微镜 (TEM).
  • 评估的方法稳定性在每样 2.78 × 10^5 到 2.67 × 10^7 颗粒的范围内.

主要成果:

  • 开发了一种快速 (25 分钟) 和可重复的 (CV ∼0.5-2%) SEC-MALS 方法用于 LVV 的表征.
  • 基于MALS的粒子计数显示,通过转导试验确定的感染性LVV标位 (R^2 = 0.77) 与感染性LVV标位有很强的相关性.
  • 结合SEC-MALS和DLS,可以识别净化对LVV异质性和质量的影响.

结论:

  • 在生物制造中,SEC-MALS提供了一种可靠和高效的工具,用于监测晶状病毒载体质量.
  • 这种分析方法支持基因和细胞疗法生产中的关键决策.
  • 该方法有助于理解和优化净化过程,以提高LVV质量.