Patent 7740880 was granted and assigned to University of Utah on June, 2010 by the United States Patent and Trademark Office.
A carrier for delivering small interfering RNA (siRNA) into cells includes a cholesterol residue covalently bonded to oligoarginine. Mixing the siRNA with the carrier produces a complex-containing composition. Contacting a cell with the complex-containing composition results in delivery of the siRNA into the cell. Delivery of an siRNA targeted to vascular endothelial growth factor is a treatment for cancer. Methods of making the carrier and complex are also disclosed.