西阿洛甘调节了在骨关节炎中的Siglec-5-TLR4相互作用
Loise Råberg1, Fan Jia1, Ula von Mentzer1
1Division of Chemical Biology, Department of Life Sciences, Chalmers University of Technology, 412 96 Gothenburg, Sweden.
iScience
|December 8, 2025
概括
通过向Siglec-5/托尔类受体4 (TLR4) 途径,可以减少骨关节炎的炎症. 这种受化影响的相互作用为骨关节炎患者的关节保存提供了潜在的策略.
科学领域:
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
- 类风湿病学 类风湿病学
背景情况:
- 骨关节炎 (OA) 涉及慢性炎症,软骨退化和关节疼痛.
- 酸结合性免疫球蛋白类莱克-5/14 (Siglec-5/14) 已在OA结合体液中被发现.
- 研究了Siglec-5与益炎性受体托尔类受体4 (TLR4) 的相互作用.
研究的目的:
- 研究OA患者单细胞中Siglec-5和TLR4之间的相互作用.
- 探索化模式在OA炎症中的作用.
- 确定潜在的治疗点,以减轻OA炎症.
主要方法:
- 单细胞被刺激使用OA突液 (OA SF),M-CSF,LPS和西亚利达酶.
- 测量了互白素-6 (IL-6) 的产生.
- 评估了细胞表型.
- 分析了Siglec-5和TLR4的局部化.
主要成果:
- 西格莱克-5和TLR4之间的反相关性表明,西格莱克-5可以抑制炎症.
- OA SF诱导的IL-6产生反映了LPS或化酶处理的细胞,表明了化作用.
- 西格莱克-5和TLR4表明了时间和西阿洛甘依赖的直接相互作用.
结论:
- 在OA中,通过化调节的Siglec-5-TLR4轴被确定.
- 这个轴代表了一个潜在的治疗策略,用于减少炎症和维护关节完整性在OA.
更多相关视频
12:23Flow Cytometry Analysis of Immune Cell Subsets within the Murine Spleen, Bone Marrow, Lymph Nodes and Synovial Tissue in an Osteoarthritis Model
Published on: April 24, 2020
20.8K
09:04Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation
Published on: September 7, 2010
11.9K
相关概念视频
The JAK-STAT Signaling Pathway
11.8K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
11.8K
Glycosaminoglycans
6.8K
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...
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...
6.8K
Proteoglycans
4.6K
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,...
4.6K
T Cell Types and Functions
2.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
2.1K
