使用微芯片ZipChip CE-MS快速表征腺相关病毒 (AAV) 囊蛋白
Josh Smith1, Sara Carillo1, Aditya Kulkarni2
1Characterisation and Comparability Laboratory, The National Institute for Bioprocessing Research and Training, Foster Avenue, Mount Merrion, A94 X099, Co. Dublin, Ireland.
Analytical and bioanalytical chemistry
|December 15, 2023
概括
微芯片毛细体电泳-质谱学快速表征腺相关病毒 (AAV) 囊蛋白. 这种方法通过检测关键的病毒蛋白变体和修改来确保AAV基因治疗产品的质量.
科学领域:
- 生物技术是生物技术.
- 分析化学 分析化学
- 分子生物学分子生物学
背景情况:
- 基因相关病毒 (AAV) 是基因疗法的关键病毒载体.
- 鉴定AAV病毒蛋白 (VPs) 和它们的修饰对于产品质量控制至关重要.
研究的目的:
- 应用基于微芯片的毛细电泳质谱法 (CE-MS) 进行快速完整的AAV VP表征.
- 评估该方法的灵敏度和检测VP变体和翻译后修改的能力.
主要方法:
- 使用基于微芯片的ZipChip CE-MS进行完整的AAV VP分析.
- 优化背景电解质与二甲基硫氧化物用于改善MS信号.
- 评估了病毒颗粒的敏感性,直到病毒颗粒的皮克格拉姆水平.
主要成果:
- 在5分钟内实现了AAV6,AAV8和AAV9完整VP的快速表征.
- 检测到各种VP3变体,包括截断,未乙化和未切割的形式.
- 确定了酸化和N-/C-终端截断,影响了AAV的疗效.
结论:
- ZipChip CE-MS提供了一种快速而灵敏的AAV VP表征方法.
- 该技术对于在AAV制造过程中监测产品质量非常有价值.
- 检测VP变异和修改有助于确保基因疗法的有效性.
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