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一种新快速的卵黄免疫球蛋白和抗体提取方法,利用蛋白质液-液相分离原理

Murtala Bindawa Isah¹, Hu Yuzhang², Mei Dang²

¹Chinese-German Joint Laboratory for Natural Product Research, Shaanxi International Cooperation Demonstration Base, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, PR China; Department of Biochemistry, Umaru Musa Yar'adua University Katsina, Nigeria.

Poultry science

|January 15, 2025

概括

一种新方法使用聚乙烯甘醇8000 (PEG8000) 来通过液-液相分离 (LLPS) 从蛋黄中有效提取免疫球蛋白Y (IgY). 这种更快,更具成本效益的技术避免了聚合,并为研究提供高纯度的IgY.

科学领域:

生物化学生物化学
免疫学免疫学免疫学
生物技术是生物技术.

背景情况:

免疫球蛋白Y (IgY) 是一种在鸟中发现的关键抗体.
传统的IgY提取方法可能耗时,昂贵,并且可能涉及聚合.
液-液相分离 (LLPS) 为抗体净化提供了一个潜在的替代方案.

研究的目的:

开发和验证一种新,高效和具有成本效益的方法,用于从蛋黄中提取IgY.
使用聚乙烯甘醇8000 (PEG8000) 诱导卵黄中的LLPS用于IgY分离.
用PEG 8000提取的IgY的纯度,有效性和特征与传统方法进行比较.

主要方法:

蛋黄样本经过脱脂,使用不同度的PEG 8000.
通过诱导具有更高度PEG 8000的LLPS来实现IgY提取.
提取的IgY的纯度和抗原结合能力使用SDS-PAGE,ELISA和西欧 blot进行了分析.

主要成果:

最佳的脱脂和蛋白质恢复在2.5%的PEG 8000下得到了实现.
用6.5%的PEG 8000诱导LLPS导致球状凝结物,而不是聚合物.
SDS-PAGE的纯度与PEG 6000方法的纯度 (77%与79%) 相当,抗原识别得到确认.

结论:

PEG 8000诱导的LLPS方法为IgY提取提供了一种高效,快速 (不到一小时) 和具有成本效益的替代方案.
这种技术避免了IgY聚合,在PEG 6000方法上提供了显著的优势.
该方法有可能优化IgY生产和生物医学研究中的应用.

关键词:

免疫球蛋白Y (IgY) 是一种液体-液体相隔离 (LLPS) 是一种液体相隔离技术.聚乙烯糖醇是一种聚乙烯糖醇.提取和净化蛋白质的提取和净化

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