- PII
- S0132342325020141-1
- DOI
- 10.31857/S0132342325020141
- Publication type
- Review
- Status
- Published
- Authors
- Volume/ Edition
- Volume 51 / Issue number 2
- Pages
- 362-371
- Abstract
- Platinum polyoxometalates are Pt (IV) complexes containing bulky cluster ligands. We have shown previously that platinum polyoxoniobate [(Nb6O19)2{Pt(OH)2}2]12− (Pt-PON1) containing two Pt centers can covalently bind DNA. Here we have addressed the structural stability of Pt-PON1 and its conjugate with guanine at the N7 position, cytotoxicity of this compound, and its accumulation in living cells. Quantum mechanical modeling showed that the Pt-PON1 complex is unstable outside the crystal lattice, while its conjugate with guanine likely undergoes structural rearrangement quite easily. A decrease in the survival of Escherichia coli XL1-Blue and DH5α strains and human HEK293T and MCF-7 cell lines was observed already at 20 μM Pt-PON1 but at higher concentrations the compound was poorly soluble in biologically compatible media. Atomic emission spectroscopy for Pt and Nb showed that Pt-PON1 is efficiently taken up by human cells in a stoichiometry corresponding to the original complex. Thus, platinum polyoxometalates, provided their solubility can be improved, may be considered as promising antitumor agents.
- Keywords
- полиоксометаллаты препараты платины повреждение ДНК цитотоксичность
- Date of publication
- 09.11.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 42
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