使用发现和向交叉链接质谱法进行抗体对人类白细胞抗原相互作用的结构建模的协议
Zheng Ser1, Nicholas R J Gascoigne2, Paul A MacAry2
1Functional Proteomics Laboratory, SingMass National Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A∗STAR), Singapore 138673, Singapore.
STAR protocols
|March 3, 2024
概括
这项研究引入了一种交叉链接质谱法 (XL-MS) 协议,用于绘制抗体-抗原相互作用的地图,特别是用于抗体与人类白细胞抗原 (HLA) 结合. 该方法有助于建模蛋白质结构和抗体-HLA复合体.
科学领域:
- 生物化学 生化学
- 结构生物学 结构生物学
- 免疫学 免疫学 免疫学
背景情况:
- 蛋白质结构建模对于理解生物功能至关重要.
- 交联质谱 (XL-MS) 提供低分辨率的结构洞察力.
- 鉴定抗体-抗原相互作用的特征在免疫学和药物开发中至关重要.
研究的目的:
- 提出一个详细的协议,用于识别纯化抗体和人类白细胞抗原 (HLA) 之间的交叉链接.
- 使用XL-MS数据实现抗体-HLA复合物的结构建模.
- 提供一种适用于建模纯化抗体-抗原相互作用的方法.
主要方法:
- 采用基于发现的XL-MS方法来确定潜在的交叉链接.
- 使用有针对性的XL-MS方法进行验证和详细分析.
- 集成识别的交叉链接与其他结构数据进行分子对接.
主要成果:
- 成功确定了纯化抗体和纯化人类白细胞抗原 (HLA) 之间的交叉联系.
- 建立了一个综合性协议,结合发现和目标XL-MS.
- 证明了XL-MS数据对HLA抗体分子对接的实用性.
结论:
- 提出的XL-MS协议对于表征抗体-HLA相互作用是有效的.
- 这种方法有助于对抗体-抗原复合物的结构建模.
- 该协议在结构生物学和免疫学研究中具有广泛的应用.
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