Structure–Activity Relationship Analysis of Imidazoquinolines with Toll-like Receptors 7 and 8 Selectivity and Enhanced Cytokine Induction
作者:Charles E. Schiaffo、Ce Shi、Zhengming Xiong、Michael Olin、John R. Ohlfest、Courtney C. Aldrich、David M. Ferguson
DOI:10.1021/jm4004957
日期:2014.1.23
Toll-like receptors 7 and 8 (TLRs) have emerged as key targets in the design of small molecule adjuvants and stimulants for use in immunotherapies. This study examines the structure–activity relationship of a series of C2- and N1-substituted C7-methoxycarbonylimidazoquinolines to gain insight to the structural basis to TLR-7 and -8 selective activity. The analysis is further applied to evaluate the
Toll样受体7和8(TLR)已成为设计用于免疫疗法的小分子佐剂和刺激剂的关键靶标。这项研究检查了一系列C2和N1取代的C7-甲氧基羰基咪唑并喹啉的结构-活性关系,以了解TLR-7和-8选择性活性的结构基础。使用鼠BMDC和人PBMC,该分析被进一步应用于评估多种细胞因子的诱导,包括IL-10,IL-12,IL-1β,TNF-α,IFN-α和IFN-γ。结果表明,TLR-7 / 8活性与C2-烷基链长相关,其中丁基(TLR-7)和戊基(TLR-8)衍生物出现峰值活性。在IL-1β,IL-12和IFN-γ的产生中发现了类似的SAR,它们显示出既依赖于C2烷基链长,又依赖于N1位置。