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在铁氧化物纳米颗粒上固定依赖性亲和联结体,以轻微磁性 mAb 分离

Ines Zimmermann¹, Friederike Eilts¹, Anna-Sophia Galler¹

¹Chair of Bioseparation Engineering, TUM School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany.

Biotechnology reports (Amsterdam, Netherlands)

|December 18, 2024

概括

带有依赖的配体的工程磁性纳米粒子提供了改进的单克隆抗体净化. 这种方法允许温和的化条件和更快的加工,推进生物分离技术.

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:

目前对单克隆抗体 (mAbs) 的下游加工在吞吐量方面面临限制,并且需要严格的pH值来从蛋白质A配体中化.
蛋白A亲和色谱是一种标准的,但资源密集的mAb净化方法.

研究的目的:

开发和评估新型磁纳米粒子,其功能与依赖的配体 (ZCa-cys) 相结合,以改善mAb分离.
在磁纳米粒子 (MNP) 上研究ZCa-cys的不同固定策略.

主要方法:

合成了三种类型的磁纳米粒子:裸MNP,MNP@TEOS和MNP@GPTMS.
通过物理吸附和共价附着,固定ZCa-cys带.
评估IgG结合能力,磁吸引力和恢复率.

主要成果:

MNP@TEOS@ZCa-cys显示出高的IgG容量 (196毫克g-1).
MNP@GPTMS@ZCa-cys表现出更快的磁吸引力和更高的IgG回收 (88%).
在GPTMS涂层的MNP上进行共价固定,可提供位点定向和高效的带附着.

结论:

使用ZCa-cys功能化的MNP进行依赖的磁分离,为传统的mAb净化提供了一个有希望的替代方案.
开发的磁纳米颗粒提供了温和的化条件,增强的可加工性和工艺集成的潜力.
这些发现为抗体制造中先进的生物分离技术铺平了道路.

关键词:

除了常规色谱 (abc) 之外的任何东西.下游加工是下游加工.环氧气体是什么环氧气体物理和共价不动化的固定.石是什么意思石是什么意思

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