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Updated: Aug 23, 2025
07:20
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
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Bioactive Platinum(IV) Complexes Incorporating Halogenated Phenylacetates
Angelico D Aputen1, Maria George Elias1,2, Jayne Gilbert3
1School of Science, Western Sydney University, Locked Bag 1797, Sydney, NSW 2751, Australia.
Molecules (Basel, Switzerland)
|October 27, 2022
Summary
New platinum(IV) complexes show potent anticancer activity, particularly against prostate and resistant ovarian cancer cells. Complexes 4 and 6, featuring fluoro- and bromo-phenylacetic acid ligands, demonstrate significant efficacy, outperforming cisplatin.
Area of Science:
- Medicinal Chemistry
- Inorganic Chemistry
- Cancer Biology
Background:
- Platinum-based drugs are mainstays in cancer chemotherapy.
- Development of novel platinum complexes is crucial to overcome drug resistance and improve efficacy.
Purpose of the Study:
- To synthesize and characterize novel platinum(IV) complexes with halogenated phenylacetic acid ligands.
- To evaluate the in vitro cytotoxicity of these complexes against a broad panel of human cancer cell lines, including drug-resistant variants.
Main Methods:
- Synthesis and characterization of platinum(IV) complexes using spectroscopic and spectrometric techniques.
- In vitro cytotoxicity assays (GI50 determination) on multiple cancer cell lines (colon, glioblastoma, breast, ovarian, lung, prostate, neuroblastoma, pancreas).
- Assessment of complex stability, solubility, lipophilicity, and reactive oxygen species production.
Main Results:
- Complexes 4 (4-fluorophenylacetic acid) and 6 (4-bromophenylacetic acid) exhibited superior cytotoxic activity.
- Complex 4 showed remarkable potency in Du145 prostate cancer cells (GI50 = 0.7 nM), significantly exceeding cisplatin and a lead complex.
- Complex 4 demonstrated high efficacy against an ADDP-resistant ovarian cancer cell line (GI50 = 6 nM), vastly outperforming cisplatin.
Conclusions:
- Novel platinum(IV) complexes possess significant in vitro anticancer potential.
- Complexes 4 and 6 are promising candidates for further investigation as anticancer agents, especially for resistant cancers.
- The halogenated phenylacetic acid ligands contribute to enhanced biological activity and potency.
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