作者:Caroline Stanwell、Bin Ye、Stuart H Yuspa、Terrence R Burke
DOI:10.1016/0006-2952(96)00250-x
日期:1996.8
with their corresponding dihydroxylated counterparts indicated that free aromatic hydroxyls were essential for cross-linking. Additionally, compounds containing phenyl rings with 1,4-dihydroxy substituents were more potent than those having 1,2-dihydroxylated patterns. As with the prototype compound 4, cross-linking was induced at both 37 degrees and 4 degrees, suggesting a chemical rather than physiological
蛋白质-酪氨酸激酶抑制剂和稳定的厄布他汀类似物2,5-二羟基肉桂酸甲酯(4)通过非生理化学机理交联细胞蛋白质(Stanwell等,Cancer Res 55:4950-4956,1995)。为了确定这种作用的结构要求,合成了埃布斯汀(1)和15种相关化合物,包括咖啡酸苯乙基酯(9),并研究了它们在低微摩尔至最高1000浓度范围内诱导细胞蛋白交联的能力。 microM。测试在NIH3T3成纤维细胞以及小鼠角质形成细胞中进行。在低至10-50 microM的浓度下,许多类似物(包括埃布他汀)均观察到细胞蛋白的有效交联。与相应的二羟基化对应物相比,甲氧基和氟的惰性表明游离的芳族羟基对于交联是必不可少的。另外,含有具有1,4-二羟基取代基的苯环的化合物比具有1,2-二羟基化图案的那些化合物更有效。与原型化合物4一样,在37度和4度都诱导了交联,表明是化学机制而非生理机制。与数据一致,提出了一种作用