Title: Comparative Dft Studies of Cytotoxicity of Camptothecin, Irinotecan and Sn-38
Abstract:The geometries of camptothecin, irinotecan, SN-38, and of their hypothetical Cu(II) complexes are optimized at the B3LYP/6-311G* level of theory. Their electron structure, evaluated in terms of Mullik...The geometries of camptothecin, irinotecan, SN-38, and of their hypothetical Cu(II) complexes are optimized at the B3LYP/6-311G* level of theory. Their electron structure, evaluated in terms of Mulliken population analysis and Quantum Theory of Atoms-in-Molecule, is subsequently related to in vitro cytotoxicity. The electron density transfer from the relevant active sites to Cu decreases in the sequence irinotecan > SN-38 > camptothecin. The absolute values of their metal-ligand interaction energies exhibit the same trend. The discrepancy with the least relative in vitro cytotoxicity of irinotecan can be explained by its anticancer action through its minor metabolite SN-38 which reduces the concentration of the active lactone form.Read More
Publication Year: 2022
Publication Date: 2022-01-01
Language: en
Type: article
Indexed In: ['crossref']
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