ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Cis-Palladium(II) complex incorporating 3-(2-pyridyl)-5-methyl-1,2,4-triazole: structure and cytotoxic activity
Zakharchenko, Borys V., Khomenko, Dmytro M., Doroschuk, Roman O., Raspertova, Ilona V., Shova, Sergiu, Grebinyk, Anna G., Grynyuk, Iryna I., Prylutska, Svitlana V., Matyshevska, Olga P., Slobodyanik, Mykola S., Frohme, Marcus, Lampeka, and Rostislav D.
Taras Shevchenko National University of Kyiv, Kiev, Ukraine
Received: 27 January 2021 Accepted: 12 May 2021
The structure of complex cis-Pd(HLMe)Cl2 was studied both in solution and in solid state using multinuclear (1H, 13C, 15N) NMR spectroscopy and X-ray structural analysis. Complex was evaluated for cytotoxic activity. Thus, the results showed that cis-Pd(HLMe)Cl2 has a pronounced cytotoxicity toward human leukemic lymphoblast’s CCRF-CEM and cervix adenocarcinoma HeLa cells. Moreover, it was found that cis-Pd(HLMe)Cl2 is more toxic than cisplatin: its IC50 value at 24 h incubation was lower by more than an order for CCRF-CEM cells and by three orders for HeLa cells as compared with cisplatin IC50. Depending on the concentration, cis-Pd(HLMe)Cl2 is accelerated or slowed hemolysis of erythrocytes. Observed differential biological effects of cis-Pd(HLMe)Cl2 suggest the dependence of the agent’s interactions with cells on the molecular structure of palladium ligand and the cell type.
Keywords: Palladium; 1,2,4-Triazole; NMR spectroscopy; Cytotoxicity; Cancer cells; Hemolysis of erythrocytes
Full paper is available at www.springerlink.com.
Chemical Papers 75 (9) 4899–4906 (2021)