Patent ID: RE41996

Claim:
A composition comprising (i) a carrier selected from the group consisting of viruses, liposomes, lipid/DNA complexes, micelles, protein/lipid complexes, nanoparticles, and microparticles, wherein the carrier comprises a hormone targeting the carder carrier to tissue expressing a receptor for the hormone , and (ii) a viscous material selected from the group consisting of hydrogels, lipogels and sols, wherein the viscous material alters cellular uptake of the carrier, wherein the viscous material has an apparent viscosity between 0.1 and 2000 2 and 200 Poise at a sheer stress of between 1 and 1000 Pascal and at a strain rate approximately that of endocytosis, and wherein the apparent viscosity is approximately equal to the viscosity of the cytosolic fluid in the cell to which the hormone is to be delivered.