4,5-Cis Unsaturated α-GalCer Analogues Distinctly Lead to CD1d-Mediated Th1-Biased NKT Cell Responses
作者:Yanli Cui、Zhiyuan Li、Zhaodong Cheng、Chengfeng Xia、Yongmin Zhang
DOI:10.1021/acs.chemrestox.5b00047
日期:2015.6.15
The total synthesis of 4,5-cis unsaturated α-GalCer analogues was achieved, and their immune-response altering activity was assessed in vitro as well as in vivo in mice. Using glycosyl iodide as a glycosyl donor, construction of the sphingosine unit was shortened by four steps and single α-stereoselectivity was achieved in good yield (67%). With regard to the therapeutic use of α-GalCer, the novel analogues (1b and 1c) distinctly induced a Th1-biased cytokine response, avoiding induction of a contradictory response and overstimulation.
4,5-顺式不饱和α-GalCer类似物的全合成得以实现,并评估了它们在体外及小鼠体内的免疫应答改变活性。利用糖基碘作为糖基供体,缩短了鞘氨醇单元的构建步骤,并通过高产率(67%)实现了单一的α-立体选择性。针对α-GalCer的治疗用途,新型类似物(1b和1c)显著诱导了偏向Th1的细胞因子反应,避免了矛盾反应和过度刺激的诱导。