Reversible PEGylation of nanocarriers

摘要

The present invention relates to the preparation and use of reversibly PEGylated nanocarriers. The reversibly PEGgylated nanocarrier system comprises an inner core comprising or consisting of a nanoparticle and/or at least one pharmaceutical compound; optionally at least one lipid bilayer on the surface of the inner core; a first ligand bound to the surface of said inner core, or if present, to the surface of the at least one lipid bilayer; a second ligand bound to the first ligand, the second ligand being covalently bound to poly(ethylene glycol) or a derivative thereof. The reversibly PEGgylated nanocarrier system is characterized in that binding of the second ligand to the first ligand is non-covalent and reversible. Pharmaceutical compositions and use of such compounds and compositions in the field of e.g. cancer therapy, gene therapy, inflammatory diseases and pain therapy are also disclosed.