Cholesterol Esterification Inhibition Suppresses Prostate Cancer Metastasis by Impairing the Wnt/β-catenin Pathway

Hyeon Jeong Lee1,2,3, Jie Li4, Renee E Vickman1,2

  • 1Interdisciplinary Life Science Program, Purdue University, West Lafayette, Indiana.

Insights

Inhibiting cholesterol esterification in prostate cancer cells suppresses metastasis. This metabolic pathway is a potential new target for treating advanced prostate cancer.

Area of Science:

  • Oncology
  • Metabolic pathways
  • Cancer research

Background:

  • Cholesterol dysregulation is common in human cancers, including prostate cancer.
  • Aberrant accumulation of cholesteryl ester is observed in metastatic prostate cancer lesions.

Purpose of the Study:

  • To investigate the role of cholesterol esterification in prostate cancer metastasis.
  • To explore cholesterol esterification as a potential therapeutic target for metastatic prostate cancer.

Main Methods:

  • Raman spectroscopic analysis of lipid droplets in patient tissues.
  • Inhibition of cholesterol esterification in prostate cancer cells.
  • Orthotopic and intracardiac injection mouse models for metastasis studies.
  • Gene expression profiling to analyze metastatic potential regulators.

Main Results:

  • Inhibition of cholesterol esterification suppressed the development and growth of metastatic lesions in mouse models.
  • Cholesteryl ester depletion upregulated metastasis-inhibiting regulators and downregulated the Wnt/β-catenin pathway.
  • Inhibition of cholesterol esterification blocked Wnt3a secretion by reducing monounsaturated fatty acid levels.

Conclusions:

  • Cholesterol esterification is a novel metabolic target for treating metastatic prostate cancer.
  • Targeting cholesterol metabolism offers a promising strategy for prostate cancer therapy.

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