Provided is an oligonucleic acid analog which contains, as at least one structural unit thereof, a modified nucleic acid monomer compound which is a ring-open nucleoside having a cleaved carbon-carbon bond between the 2′ and 3′ positions and a substituent hydroxymethyl group at the 4′ position. When used as siRNA, the oligonucleic acid analog exhibits superior biological stability and target gene expression inhibiting activity. The oligonucleic acid analog can be used in antisense methods, ribozyme methods, and decoy methods, etc., can be used as a nucleic acid aptamer, and can also be used as a nucleic acid probe or molecular beacon, etc., or in genetic diagnostics, etc.
US9725474B2
申请人:——
公开号:US9725474B2
公开(公告)日:2017-08-08
8-Vinyl-2′-deoxyguanosine as a Fluorescent 2′-Deoxyguanosine Mimic for Investigating DNA Hybridization and Topology
A one light strand: 2′‐Deoxyguanosine was made fluorescent by attaching a vinyl group at the C8 position (see structure). The resulting fluorophore is highly sensitive towards DNA double‐strand formation and alterations in the secondary structure of its parent oligonucleotide, such as formation of different quadruplex structures. These differences can be readily detected in the emission spectrum (see