The anticancer properties of well-defined molecules serve to bolster the field of metals in medicine. Such compounds, particularly those of platinum and their closely related structural analogs, continue to be potentially highly interesting to researchers and clinicians alike. The four octahedral organoplatinum(IV) compounds [Pt(CH 3 ) 2 X 2 { bipy-R 2 }] (X = Br, I; bipy-R 2 = 2,2'-bipyridine, 2,2'-bipyridine-4,4'-dicarboxylic acid) have been isolated and structurally characterized by single-crystal X-ray diffraction. Nuclear magnetic resonance and infrared spectroscopic data are also tabulated as useful reference values. The anticancer potential of each compound was assessed via in vitro MTT assays, using human breast cancer cells (cell line ZR-75-1). EC 50 values were determined as 11.5 μM for Pt(CH 3 ) 2 Br 2 { bipy }; 3020 μM, for Pt(CH 3 ) 2 Br 2 { bipy-(CO 2 H) 2 }; 6.1 μM, for Pt(CH 3 ) 2 I 2 { bipy }; and 86.0 μM, for Pt(CH 3 ) 2 I 2 { bipy-(CO 2 H) 2 }; for comparison, the EC 50 value for cisplatin against the ZR-75-1 cells was 16.4 μM. The most cytotoxic of the four compounds Pt(CH 3 ) 2 I 2 { bipy } undergoes reaction with glutathione in a THF/water mixture at 68°C very slowly.
Keyphrases
- room temperature
- magnetic resonance
- endothelial cells
- breast cancer cells
- molecular docking
- magnetic resonance imaging
- high resolution
- human health
- risk assessment
- cell proliferation
- electronic health record
- high throughput
- ionic liquid
- climate change
- induced pluripotent stem cells
- health risk assessment
- positron emission tomography
- electron microscopy
- crystal structure
- endoplasmic reticulum stress