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Related Experiment Videos

Structure-based virtual screening: an application to human topoisomerase II alpha.

Serge Christmann-Franck1, Hugues-Olivier Bertrand, Anne Goupil-Lamy

  • 1Département de Biologie et Pharmacologie Structurales, UMR 8113 CNRS, LBPA, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan Cedex, France.

Journal of Medicinal Chemistry
|December 24, 2004
PubMed
Summary

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Researchers identified potential human topoisomerase II alpha inhibitors using molecular modeling and virtual screening. This approach aids in discovering novel cancer chemotherapy agents by targeting key enzyme structural features.

Area of Science:

  • Biochemistry and Molecular Biology
  • Computational Chemistry
  • Drug Discovery

Background:

  • Eukaryotic topoisomerase II (topo II) is crucial for DNA replication, transcription, and recombination.
  • Topo II inhibitors are vital in human cancer chemotherapy due to their role in essential cellular processes.
  • Understanding topo II's mechanism is key to developing effective anti-cancer drugs.

Purpose of the Study:

  • To identify novel inhibitors of human topoisomerase II alpha (topo IIα).
  • To leverage molecular modeling and virtual screening for drug discovery.
  • To elucidate structural features essential for topo IIα inhibition.

Main Methods:

  • Employed a combination of molecular modeling and virtual screening techniques.
  • Utilized structural biology data and enzymatic assay results.

Related Experiment Videos

  • Developed 3D pharmacophore models incorporating protein-DNA interface features.

    • Main Results:

    • A validated computational protocol successfully retrieved known topo IIα inhibitors from large compound databases.
    • Identified key structural features at the protein-DNA interface critical for enzyme inhibition.
    • Compounds with a DNA-intercalating chromophore and a protein active site-interfering moiety showed significant inhibitory activity.

    Conclusions:

    • The integrated computational approach effectively identifies potential topo IIα inhibitors.
    • Structural insights into the protein-DNA interface can guide the design of new anti-cancer agents.
    • Compounds featuring specific pharmacophoric elements are promising candidates for cancer chemotherapy.