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Interaction of calf thymus DNA with the antiviral drug Lamivudine

Nahid Shahabadi1, Maryam Maghsudi, Maryam Mahdavi

  • 1Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran. nahidshahabadi@yahoo.com

DNA and Cell Biology
|July 5, 2011
PubMed

Insights

Antiviral drug lamivudine (LA) shows anticancer potential by interacting with calf thymus DNA (CT-DNA). This study reveals LA binds to DNA via groove binding, suggesting a new therapeutic avenue for cancer treatment.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Drug repurposing accelerates the development of new cancer therapies.
  • Antiviral drugs like ritonavir have demonstrated efficacy against various cancer cell lines.
  • Lamivudine (LA), an antiviral medication, is investigated for its anticancer properties.

Purpose of the Study:

  • To investigate the anticancer potential of lamivudine (LA).
  • To elucidate the interaction mechanism between LA and calf thymus DNA (CT-DNA).

Main Methods:

  • Spectroscopic techniques including emission and absorption spectroscopy.
  • Circular dichroism (CD) and viscosity measurements.
  • Thermodynamic analysis of drug-DNA binding.

Main Results:

  • Fluorescence data indicate a static binding process with complex-DNA formation.
  • Thermodynamic parameters (ΔH<0, ΔS<0) suggest van der Waals forces or hydrogen bonds mediate LA-DNA binding.
  • CD spectral changes and viscosity data confirm groove binding of LA to CT-DNA.

Conclusions:

  • Lamivudine (LA) exhibits significant affinity for calf thymus DNA (CT-DNA).
  • The binding mechanism involves groove binding, indicating potential anticancer activity.
  • LA's interaction with DNA supports its investigation as a novel cancer therapeutic agent.

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