申请人:Toray Industries, Inc.
公开号:EP3862431A1
公开(公告)日:2021-08-11
The present invention relates to a method for producing a hairpin single-stranded RNA molecule capable of inhibiting expression of a target gene, comprising the step of reacting a first single-stranded oligo-RNA molecule represented by the following formula (I) with a second single-stranded oligo-RNA molecule represented by the following formula (II) in a mixed solvent comprising a buffer solution and a hydrophilic organic solvent in the presence of a dehydration condensation agent: 5'-Xc-Lx1 ... (I) and Lx2-X-Y-Ly-Yc-3' ... (II), wherein the dehydration condensation agent is selected from the group consisting of a triazine-based dehydration condensation agent, a uronium-based dehydration condensation agent comprising an N-hydroxy nitrogen-containing aromatic ring structure, a carbodiimide-based dehydration condensation agent, a 2-halopyridinium-based dehydration condensation agent, and a formamidinium-based dehydration condensation agent.
本发明涉及一种生产能够抑制靶基因表达的发夹型单链 RNA 分子的方法,包括以下步骤: 在由缓冲溶液和亲水性有机溶剂组成的混合溶剂中,在脱水缩合剂存在的情况下,由下式 (I) 表示的第一单链寡核苷酸分子与由下式 (II) 表示的第二单链寡核苷酸分子反应: 5'-Xc-Lx1 ...... (I) 和 Lx2-X-Y-Ly-Yc-3' ...... (II) ,其中脱水缩合剂选自由三嗪类脱水缩合剂、脲类脱水缩合剂、脲类脱水缩合剂和脲类脱水缩合剂组成的组。...(I)和 Lx2-X-Y-Ly-Yc-3' ...(II),其中脱水缩合剂选自由三嗪基脱水缩合剂、包含 N-羟基含氮芳香环结构的脲基脱水缩合剂、碳二亚胺基脱水缩合剂、2-卤代吡啶鎓基脱水缩合剂和甲脒基脱水缩合剂组成的组。