N1,N11-Diethylnorspermine is an activator and inducer of spermidine/spermine N1-acetyltransferase (SAT1). A designed polyamines (PAs) analog which induces cell cycle arrest, inhibits proliferation and induces apoptosis in melanoma, breast, prostate, lung and colon cancer cells. N1,N11-Diethylnorspermine tetrahydrochloride is a highly potent inducer of spermidine/spermine N1-acetyltransferase, able to increase enzyme activity 200-1000 fold.