[分子伴侣会影响Pichia pastoris中单域抗体的表达]
Weiming Su1,2, Ye Qin3, Haiwei Zhang2
1Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan 430056, Hubei, China.
Sheng wu gong cheng xue bao = Chinese journal of biotechnology
|February 27, 2026
概括
在Pichia pastoris中与单域抗体 (sdAbs) 共同表达的分子伴侣增强了sdAb的产生和稳定性. 像Sec,BZIP和YPDI这样的特定伴奏物改善了表达,热稳定性和抗变性,为优化sdAb制造提供了洞察力.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 蛋白质工程是指蛋白质工程.
背景情况:
- 单域抗体 (sdAbs) 在生物医学中非常有价值,因为它们的小尺寸和组织透性.
- 皮奇亚牧羊虫的表达系统对蛋白质生产具有成本效益和效率,支持适当的蛋白质折叠.
研究的目的:
- 为了提高表达效率并改善sdAbs的物理化学特性,使用Pichia pastoris的共同表达系统.
- 研究六种分子伴侣物 (HDPI,YPDI,BZIP,TO,RPPO和Sec) 对sdab的产生和稳定性的影响.
主要方法:
- 为 sdAbs 和分子陪伴者构建了一个 Pichia pastoris 的共同表达系统.
- 通过循环二重化 (CD) 光谱,热温度 (Tm) 和尿素诱导展开 (CUU) 试验,度试验和素消化实验,评估sdAb的结构和功能特性.
主要成果:
- 与Sec的同时表达增加了sdAb表达水平的1.68倍.
- BZIP增强了热稳定性 (Tm增加2.4°C),而YPDI提高了对尿素变质 (CUU增加1.2mol/L) 和酶消化的耐受性.
- 与HDPI,TO和RPPO不同的是,YPD I和BZIP抑制了抗体聚合.
结论:
- 不同的分子陪伴剂对sdAbs.的物理化学性质产生不同的调节作用.
- 这项研究为优化 sdAb 生产过程的基础,通过战略的陪伴者共同表达.
更多相关视频
08:32Detection of the pH-dependent Activity of Escherichia coli Chaperone HdeB In Vitro and In Vivo
Published on: October 23, 2016
11.1K
11:57Studying Protein Function and the Role of Altered Protein Expression by Antibody Interference and Three-dimensional Reconstructions
Published on: April 21, 2016
7.1K
相关概念视频
Molecular Chaperones and Protein Folding
20.5K
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
20.5K
Molecular Chaperones and Protein Folding
15.2K
15.2K
Bacterial Protein Maturation
632
Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
632
Coordination of Gene Expression Processes in Bacteria
756
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
756
