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[Interactions between ciprofloxacin, Mg2+, Mn2+ and DNA by electrochemical method]
Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|April 1, 1997
Summary
Ciprofloxacin (CPFX) binds to DNA, forming a ternary complex with Mg2+ or Mn2+. This interaction, detectable via voltammetry, reveals CPFX-Mg intercalation into DNA base pairs, offering insights into drug-DNA interactions.
Area of Science:
- Electrochemistry
- Biochemistry
- Molecular Biology
Context:
- Ciprofloxacin (CPFX) is a widely used antibiotic.
- Understanding drug-DNA interactions is crucial for pharmacology and toxicology.
- Metal ions can influence drug-DNA binding.
Purpose:
- To investigate the electrochemical behavior of ciprofloxacin (CPFX) in the presence of DNA, Mg2+, and Mn2+.
- To elucidate the binding mechanism and complex formation between CPFX, metal ions, and DNA.
- To explore the potential of voltammetry for studying such interactions.
Summary:
- Linear-sweep voltammetry revealed a new reduction peak for CPFX with DNA, indicating CPFX-DNA binding.
- The addition of Mg2+ or Mn2+ resulted in a more negative peak potential, suggesting the formation of a ternary CPFX-metal-DNA complex.
- The peak current was proportional to DNA concentration, and the electrode reaction was irreversible, influenced by adsorption, with CPFX-metal intercalating into DNA.
Impact:
- This study provides a sensitive electrochemical method for detecting CPFX-DNA interactions.
- The findings contribute to understanding the molecular mechanisms of ciprofloxacin's action and potential toxicity.
- The research highlights the role of metal ions in modulating drug-DNA complex formation and stability.