Synthesis, characterization and albumin binding capabilities of quinizarin containing ternary cobalt(III) complexes

Four Co(III) ternary complexes with the composition of [(Co(4 N))2(quin)](ClO4)4 or [(Co(4 N))2(quinS)](ClO4)3, where 4 N = tris(2-aminoethyl)amine (tren) or tris(2-pyridylmethyl)amine (tpa), quinH2 = quinizarin (1,4-dihydroxy-9,10-anthraquinone), quinSH3 = quinizarin-2-sulfonic acid (1,4-dihydroxy-...

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Elmentve itt :
Bibliográfiai részletek
Szerzők: Kozsup Máté
Dömötör Orsolya
Nagy Sándor
Farkas Etelka
Enyedy Éva Anna
Buglyó Péter
Dokumentumtípus: Cikk
Megjelent: 2020
Sorozat:JOURNAL OF INORGANIC BIOCHEMISTRY 204
doi:10.1016/j.jinorgbio.2019.110963

mtmt:31012881
Online Access:http://publicatio.bibl.u-szeged.hu/18702
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520 3 |a Four Co(III) ternary complexes with the composition of [(Co(4 N))2(quin)](ClO4)4 or [(Co(4 N))2(quinS)](ClO4)3, where 4 N = tris(2-aminoethyl)amine (tren) or tris(2-pyridylmethyl)amine (tpa), quinH2 = quinizarin (1,4-dihydroxy-9,10-anthraquinone), quinSH3 = quinizarin-2-sulfonic acid (1,4-dihydroxy-9,10-anthraquinone-2-sulfonic acid), were synthesized, characterized and their human serum albumin (HSA) binding capabilities were also tested. The complexes can be considered as likely chaperons of quinizarins which are structural models for anthracycline-based anticancer drugs like doxorubicin. All the Co(III) complexes are dinuclear and were isolated as mixture of isomers. Comparison of the cyclic voltammograms of the free ligands and the appropriate Co(III) complexes revealed that the new signals belonging to reversible processes in the range −400–0 mV (vs. Ag/AgCl) for the complexes can be attributed to the reversible reduction of the Co(III) centre. These potentials are in the range of typical (O,O) chelated Co(III) ternary complexes bearing 4 N donor ligands and follow the order being more positive for the tpa containing complexes. Presence of the sulfonate group in the quinizarin results in slightly more negative reduction potential of the Co(III) complexes. HSA binding capabilities of the quinH2 and quinSH3 ligands as well as the appropriate complexes showed that quinSH3 has higher affinity to the protein than quinH2 while none of the complexes seem to bind to HSA. 
700 0 1 |a Dömötör Orsolya  |e aut 
700 0 1 |a Nagy Sándor  |e aut 
700 0 1 |a Farkas Etelka  |e aut 
700 0 1 |a Enyedy Éva Anna  |e aut 
700 0 1 |a Buglyó Péter  |e aut 
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