Sugar amino acid containing somatostatin analogues that induce apoptosis in both drug-sensitive and multidrug-resistant tumor cells

[GRAPHICS] Resistance to chemotherapy has become a major problem in cancer therapy. The new sugar amino acid (SAA) containing somatostatin analogues presented possess antiproliferative and apoptotic activity against both multidrug-resistant and drug-sensitive hepatoma carcinoma cells. Synthesis, design, and biological evaluation of the cyclic analogues and of the furanoid SAA used will be discussed. Four analogues have IC50 values in the low muM range, making them promising leads for chemotherapeutic drugs against multidrug-resistant carcinoma.