polyethylenimine (pei) has been proposed as a non-viral vector, and has been successfully used to transfer reporter genes into the central nervous system (cns), kidneys, and lungs of adult mice. neuropeptide y (npy) is a peptide expressed in the hypothalamus and is important in the regulation of body weight. using pei combined with stereotactic microinjection, we have successfully transferred c...

objective(s): carbon nanotube (cnt) has been widely applied at molecular and cellular levels due to its exceptional properties. studies based on conjugation of cnts with biological molecules indicated that biological activity is preserved. polyethylenimine (pei) is explored in designing novel gene delivery vectors due to its ability to condense plasmid dna through electrostatic attraction. in t...