一种非染色学方法,用于从生物流体中净化双价活性单克隆IgG抗体
Başar Bilgiçer1, Samuel W Thomas, Bryan F Shaw
1Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
Journal of the American Chemical Society
|June 19, 2009
概括
这项研究提出了一种新的方法,用于使用多价值哈普从液中净化单克隆抗体 (mAbs). 这种技术实现了高产量和纯度,为传统染色学提供了替代方案.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 蛋白质化学 蛋白质化学
背景情况:
- 酸液含有复杂的蛋白质混合物,包括单克隆抗体 (mAbs).
- 从这种混合物中净化特定的mAbs对于研究和治疗应用至关重要.
- 现有的染色学方法可能耗时,可能无法有效地分离所有抗体类型.
研究的目的:
- 开发和验证一种新型的非染色学方法,用于净化从炎液中的单克隆抗体.
- 为了证明使用合成多价值哈普用于选择性抗体沉的疗效.
- 为了实现高产量和纯度的向抗体,如老鼠抗-2,4-丁烯基IgG (IgG ((DNP)) 和小鼠抗digoxin IgG (IgG ((Dgn)).
主要方法:
- 一个三步的净化过程,涉及硫酸沉,形成抗体形成的复合物,以及这些复合物的选择性沉.
- 使用合成的多价位配体 (DNP和狄戈辛的衍生物) 来结合标抗体.
- 从沉复合体中再生自由抗体.
主要成果:
- 对于IgG (DNP) 和IgG (Dgn) 均取得了超过80%的产量,纯度超过95%.
- 该方法有效地将目标抗体从其他蛋白质和免疫球蛋白中分离出来.
- 已证明适用于具有广泛单价结合常数 (0.1微米到0.1纳米) 的抗体.
结论:
- 这种基于哈普的沉方法为单克隆抗体的染色学净化提供了高度选择性和高效的替代方案.
- 该技术利用抗体结合部位的双价性性质,用于选择性复合体形成和沉.
- 该方法是强大的,适用于各种抗体净化挑战从生物流体.
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