Cytotoxic activity of the cluster rhenium compound with β-alanine ligands

Abstract

Earlier we have shown that cluster rhenium compounds not only inhibited tumor growth in vivo but also supported the antioxidant state of experimental animals. Further investigation of new dirhenium(III) and cluster rhenium compounds in human leukemic cells is of great importance. The aim of the recent work was to investigate the cytotoxic activity of the new cluster rhenium compound with β-alanine ligands [Re2Cl6(C3H7NO2)2]·1.5H2O (I) in the solutions and nanoliposomes alone and together with cisplatin in Jurkat cells. It was shown that I in solution had cytotoxicity close to cisplatin (LC50 = 2.06·10-6 M). The administration of the rhenium-platinum system with І showed increased cytotoxic activity, especially high when both components of the system were in the mixed liposomes together (LC50 = 4.93·10-10 M). The new dirhenium dicarboxylate complex with zwitterionic amino acid ligands possesses an appreciable cytotoxic and proapoptotic activity against leukemic cells, especially in combination with cisplatin, guiding the search for novel active rhenium compounds and development of improved regimens for combined chemotherapy based on combination of rhenium-platinum compounds.

Keywords

• apoptosis
• cluster rhenium compound
• cytotoxic activity
• rhenium-platinum system