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用于通过亲缘性染色学对外体的通用净化而使用的配体

Ryan E Kilgore¹, Brandyn D Moore¹, Sobhana A Sripada¹

¹Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, USA.

Biotechnology and bioengineering

|August 5, 2024

概括

这项研究引入了新的酸亲和关系联体,用于通用外体纯化,克服了传统方法的局限性. 这些配体确保高产量和纯度,同时保持外体完整性,用于药物输送和再生医学中的应用.

科学领域:

生物技术是生物技术.
纳米医学是一种纳米医学.
生物化学生化学

背景情况:

外体是药物输送,疫苗接种和再生医学的关键纳米级囊泡,因为它们的免疫性和有效载荷能力较低.
目前的外体净化方法,如超离心和过,产量低,纯度低,可能损害颗粒的完整性.
现有的使用抗体的亲和染色学方法需要定制,并且可以在化过程中损害外体活动.

研究的目的:

从重组源开发通用基亲和联体,以有效和温和地从重组源净化外体.
为了应对与传统净化技术相关的外体异质性,低产量和潜在损害的挑战.
创建一个净化策略,保持外体细胞的稳定性和活性,用于治疗应用.

主要方法:

设计和选择具有乱交的外体生物识别和轻微化特性的亲缘性联体 (SNGFKKHI,TAHFKKKH).
联体在亲和染色学中的应用,用于从各种细胞来源捕获外体.
使用分析染色学,西方斑点,传输电子显微镜和纳米颗粒追踪分析对纯化外体的表征.

主要成果:

精选的配体成功捕获了来自14个不同的细胞来源的外体.
从HEK293,PC3,MM1,U87和COLO1细胞中净化外体的产量高达80%,宿主细胞蛋白 (HCP) 减少了50倍.
使用SNGFKKHI-Toyopearl树脂进行的两步净化实现了68%的产量,并将HCP降低到68 ng/mL,证实了外体完整性.

结论:

新型基亲和联结体为外体细胞净化提供了通用和有效的解决方案,超越了传统方法.
开发的配体通过温和的化条件保持外体稳定性和活性,适合治疗开发.
这一进步促进了可扩展和可靠的高纯度外体的生产,用于各种生物医学应用.

关键词:

亲缘关系染色学亲缘关系染色学生物分离的生物分离.外基因组是外基因组的组成部分.基因传递基因传递基因传递酸连接体的酸连接体

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