Synthesis of hairpin siRNA using 18β-glycyrrhetinic acid derivative as a loop motif

被引：4
作者：
Bang, Eun-Kyoung [1 ]
Kim, Byeang Hyean [1 ]
机构：
[1] Pohang Univ Sci & Technol, BK Sch Mol Sci, Dept Chem, Pohang 790784, South Korea
来源：
TETRAHEDRON LETTERS | 2009年 / 50卷 / 21期
关键词：
18 beta-Glycyrrhetinic acid; Hairpin ODN; shRNA; RNA interference; PHOSPHORAMIDITE BUILDING-BLOCKS; FREE MOLECULAR BEACON; QUENCHER-FREE; CHEMICAL-MODIFICATION; RNA INTERFERENCE; MODIFIED OLIGONUCLEOTIDES; GLYCYRRHETINIC ACID; CELLULAR UPTAKE; DNA; GENE;
D O I：
10.1016/j.tetlet.2009.03.049
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
We synthesized a new phosphoramidite building block from 18 beta-glycyrrhetinic acid. This compound was introduced in the middle of the palindromic oligonucleotides and they formed hairpin structure. This 18 beta-glycyrrhetinic acid derivative excellently performed its role as hairpin loop. These hairpin ODNs had higher T-m values than the natural one and formed stable hairpin structure without any structural distortion. We found that stability of hairpin ODNs was changed according to the length of hairpin stem and modified hairpin ODNs, which had longer than seven base pair stem, were more stable than natural one based on T-m values. The shRNAs bearing similar modified loop were also synthesized. These modified shRNAs could suppress their target gene expression without losing their RNAi efficiency. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2545 / 2547
页数：3
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