Discovery of Potent Disheveled/Dvl Inhibitors Using Virtual Screening Optimized With NMR-Based Docking Performance

Kiminori Hori1, Kasumi Ajioka2, Natsuko Goda1

  • 1Laboratory of Structural Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan.

Frontiers in Pharmacology
|September 21, 2018
PubMed

Insights

Researchers identified novel Wnt pathway inhibitors targeting Disheveled (Dvl) to combat chemo-resistant cancer stem cells (CSCs). These compounds show promise for treating triple-negative breast cancer (TNBC).

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Drug Discovery

Background:

  • Cancer stem cells (CSCs) drive tumor growth and chemoresistance in solid tumors.
  • The Wnt/β-catenin pathway is crucial for CSC self-renewal and tumorigenesis.
  • Mammalian Disheveled (Dvl) is a key regulator in the Wnt pathway and a potential drug target.

Purpose of the Study:

  • To identify novel inhibitors of the Dvl PDZ domain.
  • To evaluate the potential of these inhibitors for anti-cancer therapy, particularly for triple-negative breast cancer (TNBC).

Main Methods:

  • Nuclear Magnetic Resonance (NMR) spectroscopy to analyze Dvl1-PDZ interactions.
  • Virtual screening (VS) using GOLD software to identify potential drug candidates.
  • NMR titration experiments to validate binding of new compounds.
  • Cell proliferation assays using BT-20 TNBC cells.

Main Results:

  • Identified over 1,700 compounds with higher binding scores than a known inhibitor.
  • Five novel compounds (NPL-4001, 4004, 4011, 4012, 4013) showed significant interaction with Dvl1-PDZ via NMR.
  • These compounds demonstrated partial inhibition of BT-20 cell proliferation.

Conclusions:

  • The identified compounds are potent Wnt pathway inhibitors targeting Dvl.
  • These novel inhibitors hold potential for developing new anti-TNBC therapies.

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