Polycationic compositions for cellular delivery of polynucleotides
The present invention relates to delivery of biologically active molecules to cells. Specifically, the invention relates to polycationic compositions, polymers and methods for delivering nucleic acids, polynucleotides, and oligonucleotides such RNA, DNA and analogs thereof, including short interfering RNA (siRNA), ribozymes, and antisense, or peptides, polypeptides, proteins, antibodies, hormones and small molecules, to cells by facilitating transport across cellular membranes epithelial tissues and endothelial tissues. The compositions and methods of the invention are useful in therapeutic, research, and diagnostic applications that rely upon the efficient transfer of biologically active molecules into cells, tissues, and organs.
1 . A composition comprising a short interfering nucleic acid (siNA) molecule and a compound having the Formula 15:
wherein X and Y are the same or different and represent an amine, substituted amine, guanidinium, substituted guanidinium, histidyl, or substituted histidyl group, R represents H, alkyl, substituted alkyl, aryl, substituted aryl, or a ligand, each n independently represents an integer from 0 to about 20, and n′ represents an integer from about 1 to about 20.