Synthesis and Immunostimulating Properties of Lipophilic Ester and Ether Muramyl Peptide Derivatives
作者:Ghada Merhi、Anthony W. Coleman,、Jean-Philippe Devissaguet、Gillian M. Barratt
DOI:10.1021/jm960147u
日期:1996.1.1
lipophilic ester derivative (MTP-Chol) and two nonhydrolyzable lipophilic ether derivatives (MTP-octadecane and MTP-heptadecafluorooctadecane). Activation of the RAW 264.7 cell line was studied by measuring nitrite production as an indication of NO-synthase activity. The lipophilic ester derivative, incorporated within nanocapsules, was as active as free muramyl dipeptide, whereas the lipophilic ether derivatives
当巨噬细胞被免疫调节剂激活时,对肿瘤细胞会产生细胞毒性。合成了三种不同的穆拉米肽:一种可水解的亲脂性酯衍生物(MTP-Chol)和两种不可水解的亲脂性醚衍生物(MTP-十八碳烯和MTP-十七碳氟十八碳烯)。RAW 264.7细胞系的激活通过测量亚硝酸盐的产生(作为NO合酶活性的指标)进行研究。掺入纳米胶囊中的亲脂性酯衍生物与游离的穆拉米二肽一样具有活性,而亲脂性醚衍生物不能活化巨噬细胞。胶束形式的MTP-十八烷也不能诱导巨噬细胞的细胞毒性。这些结果表明,为了激活巨噬细胞,需要将亲脂性穆拉米肽水解以产生水溶性代谢产物。