Methods of preparing targeted aptamer prodrugs
US9540412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2011 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | May 7, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2320/32
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides methods of preparing an oligonucleotide, nucleoside or nucleoside analog for selective introduction into a subject's cells, the method comprising (1) selecting a targeted aptamer, internalizing nucleic acid or tumor-homing nucleic acid via iterative rounds of selection, and (i) hybridizing it to an oligonucleotide, (ii) replacing one or more nucleotide with a nucleoside or nucleoside analog, or (iii) synthesizing the it with one or more nucleoside or nucleoside analogs; or (2) preparing a naive combinatorial aptamer, internalizing nucleic acid or tumor-homing nucleic acid prodrug library, and running iterative rounds of selection for the cells. The present invention also provides the agent, the pharmaceutical composition, and methods of treating or preventing cancer and/or viral infection, the method comprising administration of the oligonucleotide, nucleoside or nucleoside analog for selective introduction into a subject's cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.