biological source
Porphyromonas gingivalis
form
powder
purified by
phenol extraction
impurities
≤3% Protein (Lowry)
color
white to faint yellow
solubility
triethylene glycol dimethyl ether: 0.90-1.10 mg/mL to hazy, colorless to light yellow
shipped in
ambient
storage temp.
2-8°C
Quality Level
General description
该脂多糖(LPS)是革兰氏阴性菌(如,牙龈卟啉单胞菌)细胞壁的特征性成分。与大肠杆菌来源的脂多糖在结构和各种功能上均有所不同。
Application
脂多糖已用于:
- 作为诱导试剂,刺激人支气管上皮(HBE)细胞产生急性肺损伤
- 作为toll样受体4(TLR4)激动剂并刺激肠正常成纤维细胞(NF),研究肌成纤维细胞骨桥蛋白(OPN)表达
- 研究其对内皮细胞促炎和促凝基因表达的影响
Biochem/physiol Actions
LPS及其脂质A部分可通过Toll样受体4(TLR4)刺激先天免疫系统细胞,TLR4是Toll样受体蛋白家族的成员,它能识别常见的病原体相关分子模式(PAMP)。
此外,研究证明,大肠杆菌和牙龈卟啉单胞菌来源的脂多糖对分化簇14(CD14)、toll样受体2(TLR2)和toll样受体4(TLR4)表面表达、初次和二次细胞因子应答的调节机制各不相同。
牙龈卟啉单胞菌是革兰氏阴性菌,与成人牙周炎有关。牙周炎是一种慢性炎症,主要表现为牙周支持组织退缩。研究表明,牙龈卟啉单胞菌产生的脂多糖和牙周炎密切相关。
最近研究表明,牙龈卟啉单胞菌脂多糖可刺激胰岛β细胞株 MIN6分泌胰岛素。当存在5 mM葡萄糖和50-500 ng/mL牙龈卟啉单胞菌LPS时,观察到胰岛素分泌显著增加。
此外,研究证明,大肠杆菌和牙龈卟啉单胞菌来源的脂多糖对分化簇14(CD14)、toll样受体2(TLR2)和toll样受体4(TLR4)表面表达、初次和二次细胞因子应答的调节机制各不相同。
牙龈卟啉单胞菌是革兰氏阴性菌,与成人牙周炎有关。牙周炎是一种慢性炎症,主要表现为牙周支持组织退缩。研究表明,牙龈卟啉单胞菌产生的脂多糖和牙周炎密切相关。
最近研究表明,牙龈卟啉单胞菌脂多糖可刺激胰岛β细胞株 MIN6分泌胰岛素。当存在5 mM葡萄糖和50-500 ng/mL牙龈卟啉单胞菌LPS时,观察到胰岛素分泌显著增加。
Preparation Note
来自牙龈卟啉单胞菌的LPS可溶于水和细胞培养基DMEM(1-5mg / mL),得到澄清溶液。
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Epidemiology of subgingival bacterial pathogens in periodontal disease.
Zambon, J.J., et al.
Molecular Pathogenesis of Periodontal Disease, 1-12 (1994)
Diya Zhang et al.
Innate immunity, 14(2), 99-107 (2008-08-21)
Lipopolysaccharide (LPS) derived from the periodontal pathogen Porphyromonas gingivalis has been shown to differ from enterobacterial LPS in structure and function; therefore, the Toll-like receptors (TLRs) and the intracellular inflammatory signaling pathways are accordingly different. To elucidate the signal transduction
H E Barksby et al.
Clinical and experimental immunology, 156(3), 479-487 (2009-05-15)
Porphyromonas gingivalis lipopolysaccharide (LPS) (strain W50) interacts with Toll-like receptor 2 (TLR-2) leading to cytokine expression and inflammation, and thereby plays a key role in the pathogenesis of periodontal disease. The aims of this study were to investigate gene expression
Analysis of Lipopolysaccharides of Gram-Negative Bacteria
Mayer, H. et al.
Methods in Microbiology, 18, 157-207 (1985)
Virulence factors of Porphyromonas gingivalis.
Holt, S.C., et al.
Periodontology 2000, 20, 168-238 (1999)
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