abstract |
The present invention provides single-stranded circular oligonucleotides each with a parallel binding (P) domain and an anti-parallel binding (AP) domain separated from each other by loop domains. Each P and AP domain has sufficient complementarity to bind to one strand of a defined nucleic acid target wherein the P domain binds in a parallel manner to the target and the AP domain binds in an anti-parallel manner to the target. Moreover, the present single-stranded circular oligonucleotides can bind to both single-stranded and double-stranded target nucleic acids. The present invention also provides methods of using these oligonucleotides as well as pharmaceutical compositions containing these oligonucleotides. |