Ease in the adsorption of doxorubicin (anticancer drug), purvalanol A (drug for liver cancer), hydroxytamoxifen (drug for breast cancer), dexamethasone (anti-inflammatory drug), insulin (drug for diabetes) and TAT (a cell penetrating peptide) onto NDs have been reported, preventing premature release and improving therapeutic efficacy (76,80-83). The gene discussed is INS; the disease is diabetes mellitus.