COMPOSITIONS AND METHODS FOR CONTROLLED RELEASE

摘要

Methods and compositions are provided for the controlled release of an active agent. The composition includes an oligonucleotide scaffold and a substantially complementary oligonucleotide factor. An active agent is attached to the oligonucleotide factor. The two oligonucleotides are differentially degradable, so that degradation of the scaffold occurs a faster rate than the degradation of the factor. As the scaffold degrades, the factor is released. The active agent can be a therapeutic agent, or a diagnostic agent.