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- W2046294003 abstract "This study describes HSA binding properties of two cyclometalated platinum (II) complexes with non-leaving lipophilic ligands; deprotonated 2-phenylpyridine (ppy): C1 and deprotonated benzo [h]quinolone (bhq): C2, using UV–vis, fluorescence and circular dichroism (CD) spectroscopy. The absorption spectra of HSA decreased in the presence of increasing concentration of these complexes, reflecting HSA structural alteration after drug׳s binding. Also the thermodynamic parameters (ΔG, ΔH and ΔS) that obtained from Trp fluorescence study revealed that the interaction between these complexes and HSA were spontaneous. In addition, C1 with flexible chemical structure indicated significantly higher fluorescence quenching and binding affinity to HSA than C2 which possesses a higher structural rigidity. The ANS fluorescence results also indicated that two Pt (II) complexes were competing for binding to the hydrophobic regions of HSA. Moreover, CD results demonstrated that C2 complex induced alteration of HSA conformation to more significant extent compared to C1. The molecular docking results revealed the involvement of π–π stacking and hydrophobic interaction between these complexes and the protein. Overall, this study may highlight the significance of structural flexibility in designing of future anticancer Pt (II) complexes with improved binding affinity for HSA." @default.
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- W2046294003 date "2015-03-01" @default.
- W2046294003 modified "2023-10-15" @default.
- W2046294003 title "Study of the interaction between two newly synthesized cyclometallated platinum (II) complexes and human serum albumin: Spectroscopic characterization and docking simulation" @default.
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- W2046294003 doi "https://doi.org/10.1016/j.jlumin.2014.10.055" @default.
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