相关实验视频

Updated: Jan 13, 2026

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids

Published on: May 4, 2018

GLP-P的结构性质和抗炎活性,GLP-P是一种来自的中性糖

Yuejiao Yang¹, Zhiying Zhang¹, Ying Bai¹

¹Laboratory National Characteristic Food Research and Development, Inner Mongolia Agricultural University, Hohhot 010018, China.

Foods (Basel, Switzerland)

|October 29, 2025

概括

鉴定出一种新的低分子量糖复合物 (GLP-P) 来自开. 通过调节免疫反应和抑制关键炎症途径,GLP-P显示出显著的抗炎作用.

科学领域:

食品科学食品科学食品科学
生物化学生化学
免疫学免疫学免疫学

背景情况:

食品中的生物活性甘油具有免疫调节和神经保护性质.
低分子量糖在研究中不足,限制了对它们的结构和功能的理解.

研究的目的:

为了隔离和表征一个低分子量糖复合物 (GLP-P) 从kefir.
在体外研究GLP-P的免疫调节作用和潜在机制.

主要方法:

从酒中分离和净化GLP-P.
使用包括Mw确定,单糖和氨基酸分析,FTIR,甲基化分析和NMR光谱等技术进行结构阐明.
在实验室中评估LPS刺激的RAW264.7巨细胞的抗炎活性,分析细胞因子表达 (IL-6,TNF-α,IL-10) 和途径抑制 (TLR4/NF-κB).

主要成果:

GLP-P的Mw值为1192Da,其特征是特定的单糖和氨基酸组成,并确定了联系 (β-D-Galp-(1→4) -β-D-Glcp-(1→4) -α/β-D-Glcp).
通过HMBC频谱观察到假设的O-糖化特征.
在巨细胞中,GLP-P显著降低了促炎性细胞因子 (IL-6,TNF-α) 和增加了抗炎性细胞因子 (IL-10).
这些抗炎作用与TLR4/NF-κB信号通路的抑制有关.

结论:

来自的特征性低分子量糖复合物 (GLP-P) 在体外表现出强大的抗炎活性.
GLP-P的机制包括调节巨细胞因子的产生,并抑制TLR4/NF-κB通路.
这些发现支持GLP-P作为功能性食品成分或用于治疗炎症相关疾病的辅助疗法的潜在发展.

关键词:

在 NF-κBB 中.它具有抗炎活性,具有抗炎活性.葡萄糖酸糖是一种葡萄糖.克菲尔 (kefir) 是一种葡萄酒.结构结构结构结构

更多相关视频

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics

Published on: October 13, 2020

Synthesis of Masarimycin, a Small Molecule Inhibitor of Gram-Positive Bacterial Growth

Synthesis of Masarimycin, a Small Molecule Inhibitor of Gram-Positive Bacterial Growth

Published on: January 7, 2022

相关概念视频

Peptidoglycan Synthesis

Peptidoglycan Synthesis

Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...

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,...

Drugs for Peptic Ulcer Disease: Prostaglandin Analogs as Mucosal Protective Agents

Drugs for Peptic Ulcer Disease: Prostaglandin Analogs as Mucosal Protective Agents

The gastric mucosa produces prostaglandins E2 (PGE2) and prostacyclin (PGI2), crucial in maintaining gastric health. They exert cytoprotective effects, including increasing bicarbonate secretion, releasing protective mucin, reducing gastric acid output, and preventing harmful vasoconstriction. These effects are mediated through various receptors, such as EP1, EP2, EP3, and EP4.
Non-steroidal anti-inflammatory drugs (NSAIDs) can induce peptic ulcers by inhibiting cyclooxygenase, decreasing...