The 3-Deoxy Analogue of α-GalCer: Disclosing the Role of the 4-Hydroxyl Group for CD1d-Mediated NKT Cell Activation
作者:Dong Jae Baek、Jeong-Hwan Seo、Chaemin Lim、Jae Hyun Kim、Doo Hyun Chung、Won-Jea Cho、Chang-Yuil Kang、Sanghee Kim
DOI:10.1021/ml2000802
日期:2011.7.14
KRN7000, or α-GalCer, is a potent agonist for natural killer T (NKT) cells. The 3-hydroxyl group of its phytosphingosine moiety is important for activating NKT cells, whereas its 4-hydroxyl group is perceived to be less crucial. To experimentally determine the role of the 4-hydroxyl group, we synthesized the 3-deoxy analogue of α-GalCer. It was found that 3-deoxy-α-GalCer induced potent cytokine responses
KRN7000 或 α-GalCer 是一种有效的自然杀伤 T (NKT) 细胞激动剂。其植物鞘氨醇部分的 3-羟基对于激活 NKT 细胞很重要,而其 4-羟基被认为不太重要。为了通过实验确定 4-羟基的作用,我们合成了 α-GalCer 的 3-脱氧类似物。发现 3-脱氧-α-GalCer 诱导来自 NKT 细胞的有效细胞因子反应,与 α-GalCer 和 4-脱氧-α-GalCer 的反应相当。这一结果和我们的对接研究表明,C-4 位羟基的存在弥补了 3-羟基缺失的影响。因此,