| abstract |
An isolated nucleic acid, a plasmid or viral vector thereof and a pharmaceutical composition thereof, and a method for treating a disease. The nucleic acid and the vector comprise at least one RNA fragment capable of inhibiting gene expression and/or a targeting tag having a targeting function, can be delivered into a host body, are enriched in an organ tissue of a host, and are self-assembled to form and secrete an exosome and target a target tissue, thereby treating the disease. |