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Biological evaluation and 3D-QSAR studies of curcumin analogues as aldehyde dehydrogenase 1 inhibitors

Hui Wang1, Zhiyun Du2, Changyuan Zhang3

  • 1School of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou 510500, China. wanghuibetty1988@126.com.

International Journal of Molecular Sciences
|May 21, 2014
PubMed

Insights

Curcumin analogues show potent inhibition of aldehyde dehydrogenase 1 (ALDH1), an enzyme linked to cancer stem cells and drug resistance. Compounds with ortho di-hydroxyl groups were most effective, suggesting a new therapeutic strategy.

Area of Science:

  • Biochemistry
  • Medicinal Chemistry
  • Cancer Biology

Background:

  • Aldehyde dehydrogenase 1 (ALDH1) is a biomarker for cancer stem cells.
  • ALDH1 inhibition can overcome drug resistance and offer tumor therapy.

Purpose of the Study:

  • To investigate the inhibitory activity of curcumin analogues (CAs) against ALDH1.
  • To elucidate the mechanism, molecular interactions, and structure-activity relationships of CAs as ALDH1 inhibitors.

Main Methods:

  • Enzyme inhibition assays.
  • Molecular docking simulations.
  • 3D-QSAR modeling.

Main Results:

  • Curcumin and its analogues exhibited significant ALDH1 inhibitory activity.
  • Curcumin analogues with ortho di-hydroxyl groups displayed the highest potency.
  • Molecular docking and 3D-QSAR provided insights into the binding mode and structure-activity relationships.

Conclusions:

  • Curcumin analogues are potent inhibitors of ALDH1.
  • The ortho di-hydroxyl substitution is crucial for enhanced inhibitory activity.
  • Curcumin analogues represent a promising new class of ALDH1 inhibitors for cancer therapy.

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