通过有针对性的,自组装的,生成图案的蛋白质表面传感器进行糖形差异化
Ronny Peri-Naor1, Zohar Pode1, Naama Lahav-Mankovski1
1Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 7610001, Israel.
Journal of the American Chemical Society
|August 14, 2020
概括
研究人员开发了自组装DNA (寡氧核酸) 传感器,用于精确的蛋白质分析. 这些新型传感器可以区分糖形并检测特定的蛋白质标签,展示诊断潜力.
科学领域:
- 生物分子工程
- 超分子化学
- 分析化学
背景情况:
- 治疗性蛋白质糖化对于疗效和安全至关重要.
- 现有的糖形分析方法可能复杂且耗时.
- 开发多功能分子传感器对于先进的诊断至关重要.
研究的目的:
- 通过使用自组装修改的寡氧核酸 (ODN) 来创建生成模式的蛋白质表面传感器的新方法.
- 证明传感器能够区分不同的糖形种群,并识别治疗蛋白质的糖化状态.
- 将超分子受体和传感器集成到先进的分子分析设备中.
主要方法:
- 修改过的寡氧核酸 (ODN) 的自组装,以创建蛋白质表面传感器.
- 通过光物理特性增强糖形差异化的酸-酸 (An-BA) 探针的整合.
- 通过三三酸 (tri-NTA) -Ni2+复合物对六胺标记 (His-tags) 的选择性结合进行修饰.
主要成果:
- 成功开发了基于ODN的传感器,能够区分不同的糖形种群.
- 通过识别治疗蛋白质的糖化状态来证明诊断潜力.
- 验证了传感器对His标记蛋白质的选择性, 证实了功能机制.
结论:
- 描述的自组装方法提供了一种简单而强大的方法来产生向蛋白质表面传感器.
- 这些传感器具有显著的诊断潜力,用于分析治疗性蛋白质和区分糖形式.
- 该系统的模块化允许与各种分子探针和受体集成,使复杂的分析设备的开发成为可能.
相关概念视频
01:24Oligosaccharide Assembly
3.4K
Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
Multiple sugar molecules that may or may...
3.4K
01:25Protein Glycosylation
8.9K
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
8.9K