相关实验视频

Updated: Sep 10, 2025

Profiling of Permethylated Mucin O-glycans Using Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry

Profiling of Permethylated Mucin O-glycans Using Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry

Published on: June 20, 2025

高分支的硫酸糖聚合物作为素模拟剂

Melina I Feldhof¹, Rebecca Schlatterer², Friederike Strahl²

¹Department of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany.

Journal of the American Chemical Society

|August 28, 2025

概括

研究人员开发了一种新型的双刷糖聚合物, 这些合成的肌能够有效地复制粘附和结合等关键性质,从而促进生物医学应用.

科学领域:

生物材料科学
聚合物化学
葡萄糖生物学

背景情况:

氨酸是形成保护性上皮屏障的重要糖蛋白.
自然粘素的分离是具有挑战性的,限制了它们的使用.
在生物医学研究中,甘油聚合物是有前途的粘素仿真剂.

研究的目的:

合成和描述新的双刷糖聚合物.
创建菌素模拟物以改善对自然菌素的结构忠实性.
评估这些新型糖聚合物的仿生特性.

主要方法:

序列定义的葡萄糖聚合物的固体相合成.
在多活性基架上植入甘油聚合物.
使用光/中子散射和基于AFM的单分子力光谱进行表征.

主要成果:

成功合成了线性,刷和双刷糖聚合物.
证明了双刷架构模仿了粘附和形.
观察到单刷或线性类似物没有达到这些特性.

结论:

双刷硫酸糖聚合物有效地复制了自然粘素的关键特征.
这种架构提升了糖聚合物的潜力.
这些发现支持它们在生物医学应用中如增强屏障和滑.

更多相关视频

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins

Published on: June 14, 2016

Using Unfixed, Frozen Tissues to Study Natural Mucin Distribution

Using Unfixed, Frozen Tissues to Study Natural Mucin Distribution

Published on: September 21, 2012

相关概念视频

Glycosaminoglycans

Glycosaminoglycans

Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...

Proteoglycans

Proteoglycans

Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...

Oligosaccharide Assembly

Oligosaccharide Assembly

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...

Glycocalyx and its Functions

Glycocalyx and its Functions

The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.

Drugs for Peptic Ulcer Disease: Sucralfate as Mucosal Protective Agents

Drugs for Peptic Ulcer Disease: Sucralfate as Mucosal Protective Agents

In the intricate landscape of the gastric lumen, excessive acid secretion disrupts the natural defense mechanisms, weakening the mucus-bicarbonate barrier. This vulnerability allows pepsin to infiltrate epithelial cells, digesting mucosal proteins and triggering erosion, leading to ulcer formation.
In this scenario, mucosal protective agents like sucralfate play an essential role. Sucralfate, a complex of sulfated sucrose and aluminum hydroxide, demonstrates its usefulness in acidic conditions,...

Protein Glycosylation

Protein Glycosylation

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...