Tirsoaga Alina, Novikov Alexey, Adib-Conquy Minou, Werts Catherine, Fitting Catherine, Cavaillon Jean-Marc, Caroff Martine
Equipe "Endotoxines," UMR 8619 du CNRS, IBBMC, Université de Paris-Sud, 91405 Orsay, France.
Appl Environ Microbiol. 2007 Mar;73(6):1803-8. doi: 10.1128/AEM.02452-06. Epub 2007 Jan 19.
A method for obtaining highly purified endotoxin (lipopolysaccharide [LPS]) in a few hours by repurification of commercial or laboratory preparations was devised. It avoids the use of phenol, which is not suitable for phenol-soluble lipopolysaccharides nor for some industrial purposes. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis and matrix-assisted laser desorption ionization mass spectrometry analysis confirmed the integrity of the purified LPSs. The purified products did not activate Toll-like receptor 2 (TLR2), nuclear oligomerization domain 1 (NOD1), or NOD2 but did activate TLR4. Applied to different lipopolysaccharides, the method also improved their mass spectra, thus facilitating their structural analysis.
设计了一种通过对市售或实验室制备物进行再纯化在数小时内获得高度纯化内毒素(脂多糖 [LPS])的方法。它避免使用苯酚,苯酚既不适用于酚溶性脂多糖,也不适用于某些工业用途。十二烷基硫酸钠-聚丙烯酰胺凝胶电泳和基质辅助激光解吸电离质谱分析证实了纯化的 LPS 的完整性。纯化产物不会激活 Toll 样受体 2(TLR2)、核寡聚化结构域 1(NOD1)或 NOD2,但会激活 TLR4。应用于不同的脂多糖时,该方法还改善了它们的质谱,从而便于其结构分析。