. "er of (10) above, wherein the nucleic acid is a plasmid DNA, cDNA or antisense DNA, or an siRNA, miRNA, shRNA, mRNA, antisense RNA or RNA replicon; (12) the carrier of (9) above, wherein the compound of interest is a peptide or protein; (13) a complex of the carrier of any of (9)-(12) above and a compound of interest; (14) a method for introducing a compound of interest into a cell, which comprise" . . .