Liposomes are used in contemporary medicine to carry and
apply drugs and genes into different tissue areas of the body. They are small
bubble-shaped lipid molecules, and an attractive candidate for delivery because
they are composed of the same material as cell membranes. Several types of
cancer, for instance, are treated with liposome therapy.
Nano-sized liposomes would remarkably improve the precision
and effectiveness of drug and gene delivery. A few such technologies already
exist in the market and in clinical use, but cell-specific delivery is still a
property to be explored in nanomedicine.