Abstract

RNA interference using synthetic siRNAs to inhibit gene expression in a sequence-specific manner offers a novel opportunity for treating pulmonary diseases including asthma, airway inflammation, and respiratory viral infections. Developing siRNAs as therapeutics will however require chemical modifications to avoid degradation by nucleases, and delivery formulations to improve lung exposure. In the studies summarized here, we compared the time course of exposure in lung tissue of unmodified siRNA and greater than 95% stabilized siRNA.

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