开发一种新的亲和金聚合物膜与固定蛋白A
Tobias Steegmüller1, Tim Kratky2, Lena Gollwitzer1
1Chair of Bioseparation Engineering, TUM School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany.
Membranes
|February 23, 2024
概括
用于治疗性蛋白质净化的高度选择性亲和膜是使用固定蛋白质A联体开发的. 这些膜有效地捕获和释放单克隆抗体,改善净化过程.
科学领域:
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 亲和色谱对于治疗性蛋白质净化至关重要.
- 传统方法面临诸如质量转移阻力等局限性.
- 需要新的静止阶段来提高效率和特异性.
研究的目的:
- 开发和比较黄金喷射聚合物膜上的蛋白A配体的固定化策略.
- 评估这些膜在抗体分离方面的性能.
- 为了创建一个多功能亲和膜,用于各种净化应用.
主要方法:
- 在使用NHS/EDC化学方法,将重组蛋白A连接体固定到碳氧功能化,金膜上.
- 通过X射线光电子谱学 (XPS) 验证功能化.
- 使用双酸 (BCA),紫外线光谱和SDS-PAGE评估结合能力,抗体捕获/释放.
主要成果:
- 成功实现了蛋白A配体的功能化和固定化.
- 已证明膜的高结合能力高达104±17毫克/克.
- 证实了对Trastuzumab和人体血中的抗体的有效捕获和释放.
结论:
- 发达的亲和膜显示了抗体净化高效率和特异性.
- 膜提供了通用解决方案,减少了对定制表面修改的需求.
- 这项技术在改善治疗性蛋白质净化过程方面具有显著的潜力.
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