解冷化叶绿体储存合成DARPin G3作为生物活性封装有机体
Maryam Ehsasatvatan1, Bahram Baghban Kohnehrouz2
1Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, 51666, Iran.
Journal of biological engineering
|October 5, 2023
概括
植物制造的DARPin G3在质体中的冷化增强了蛋白质的稳定性和度. 这种具有成本效益的方法简化了癌症免疫治疗应用的下游处理和存储.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 植物科学 植物科学
背景情况:
- 生物制药生产面临诸多挑战,包括高成本,短保质期和复杂的交付.
- 基于植物细胞的生产为生物制药提供了具有成本效益的替代品.
- 称为DARPins的工程蛋白质对HER2具有很高的亲和力,HER2是癌症免疫治疗的目标.
研究的目的:
- 为了评估DARPin G3的稳定性和功能,DARPin G3产于冷化转基因的烟草叶和叶绿体中.
- 评估软化对DARPin G3度和HER2结合活性的影响.
- 确定使用冷化植物材料用于生物制药的长期储存和下游加工的可行性.
主要方法:
- 在转基因烟草中产生DARPin G3.
- 烟草叶和叶绿体的隔离和冷化.
- 对蛋白质稳定性和折叠的西方斑点分析.
- 用HER2结合测试来确认功能.
主要成果:
- 在室温下,DARPin G3 保持稳定,并在冷叶和叶绿体中适当折叠,在室温下长达9个月.
- 淋化使得DARPin G3的度在叶子中增加了16倍,在叶绿体中增加了32倍.
- 在储存9个月后,来自质体的DARPin G3保持了与HER2的结合活性,而不会失去亲和力.
结论:
- 释放DARPin G3的叶绿体的冷化降低了成本,并简化了下游加工,净化和储存.
- 在空间效率和DARPin G3提取方面,冷化叶片比冷化叶片更有效.
- 这种方法促进生物制药的配方实践,以满足以需求为导向的需求.
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