通过结合过器辅助样本制备和本地消化,改善了单克隆抗体中宿主细胞蛋白的识别
Journal of pharmaceutical sciences
|June 17, 2025
概括
一种新的过辅助本地消化方法提高了生物治疗中的宿主细胞蛋白 (HCP) 识别. 这种技术提高了HCP的丰富性和表征性,这对于确保药物安全性和稳定性至关重要.
科学领域:
- 生物制药开发 生物制药开发
- 分析化学 分析化学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 生物疗法中的宿主细胞蛋白 (HCP) 构成安全风险,影响产品的稳定性.
- 像ELISA这样的当前量化方法缺乏HCP识别能力.
- 液体染色体质谱法 (LC-MS) 可以识别医疗人员,但与ELISA相比,其动态范围有限.
研究的目的:
- 开发一种有效的HCP丰富方法,以改善生物治疗中的识别.
- 通过使用LC-MS来提高HCP分析的灵敏度和动态范围.
- 为了能够在复杂的生物制药样本中对医疗保健人员进行全面的表征.
主要方法:
- 一个新的策略,结合了过器辅助样本制备 (FASP) 与本地消化.
- 在样本准备后进行枪支蛋白质组学分析.
- 适用于NISTmAb标准和内部抗体样本.
主要成果:
- 与标准的本地消化相比,拟议的方法显著改善了抗体去除.
- 实现了HCP检测 (12470 kDa) 的广泛分子量覆盖.
- 在NISTmAb中确定了155名使用过器辅助本地消化与标准本地消化的HCP.
- 在内部抗体样本中,医疗保健人员的量化水平低至0.03 ppm.
结论:
- 过器辅助的本地消化,其次是枪蛋白质组学,是HCP识别和表征的强大策略.
- 这种方法克服了LC-MS用于HP分析的动态范围限制.
- 该方法具有高灵敏度和广泛的分子量覆盖,对于生物治疗过程开发和质量控制至关重要.
更多相关视频
相关概念视频
Western Blotting
17.7K
Western blotting is an analytical technique for protein identification. It has various applications in immunology and medicine, including detecting diseases like bovine spongiform encephalopathy, mad cow disease, and human and feline immunodeficiency virus from biological samples.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.
17.7K
Immunoprecipitation
5.9K
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
5.9K


