The alkyl-connected 2-amino-6-vinylpurine (AVP) crosslinking agent for improved selectivity to the cytosine base in RNA
作者:Yosuke Taniguchi、Yusuke Kurose、Takamasa Nishioka、Fumi Nagatsugi、Shigeki Sasaki
DOI:10.1016/j.bmc.2010.03.008
日期:2010.4
We have previously reported that the 2-amino-6-vinylpurine (AVP) nucleoside exhibits a highly efficient and selective crosslinking reaction toward cytosine and displayed an improved antisense inhibition in cultured cells. In this study, we further investigated the alkyl-connected AVP nucleoside analogs for more efficient crosslinking to the cytosine base (rC) of the target RNA. We synthesized three AVP analogs which connect the 2-amino-6-vinylpurine unit to the 2'-deoxyribose through a methylene, an ethylene, or a butylene linker. The ODN incorporating the AVP analog with the methylene or the butylene linker showed a slightly higher crosslinking to the target rC of RNA than the original AVP with no linker. In contrast, the AVP with the ethylene linker formed a selective and efficient crosslink to the rC of the target RNA. (C) 2010 Elsevier Ltd. All rights reserved.