Related Experiment Video

Updated: Jun 3, 2025

Identification and Characterization of Metastatic Factors by Gene Transfer into the Novel RIP-Tag; RIP-tva Murine Model
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Identification and Characterization of Metastatic Factors by Gene Transfer into the Novel RIP-Tag; RIP-tva Murine Model

Published on: October 16, 2017

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Deletion of AMP-activated protein kinase impairs metastasis and is rescued by ROS scavenging or ectopic CD36

Gopalakrishnan Ramakrishnan1, Alexander R Terry1, Veronique Nogueira1

  • 1Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA.

Cell Reports
|January 11, 2025
PubMed

Insights

AMP-activated protein kinase (AMPK) is essential for breast cancer metastasis. Inhibiting AMPK increases reactive oxygen species and lipid oxidation, hindering tumor spread, while restoring metastasis when antioxidants are used.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • The role of AMP-activated protein kinase (AMPK) in cancer development remains debated.
  • Understanding AMPK's function is crucial for developing targeted cancer therapies.

Purpose of the Study:

  • To investigate the role of AMPK in breast cancer metastasis using genetic models.
  • To elucidate the molecular mechanisms by which AMPK influences tumor progression.

Main Methods:

  • Utilized mouse models of spontaneous breast cancer metastasis.
  • Performed genetic deletion of AMPK in tumor cells both before and after onset.
  • Assessed the impact of AMPK deletion on metastasis, reactive oxygen species (ROS) levels, and lipid oxidation.
  • Investigated the role of fatty acid metabolism and CD36 expression.

Main Results:

  • AMPK deletion significantly reduced breast cancer metastasis in vivo.
  • AMPK deficiency led to increased ROS levels and lipid oxidation, impairing metastasis.
  • Antioxidants restored metastatic potential in AMPK-deficient tumors.
  • AMPK regulates fatty acid metabolism by inhibiting acetyl-CoA carboxylases and influences CD36 expression.

Conclusions:

  • AMPK is genetically required for breast cancer metastasis.
  • AMPK-dependent regulation of ROS, lipid oxidation, and fatty acid transport (CD36) are critical for metastasis.
Keywords:
AMPKCD36CP: CancerCP: MetabolismROSbreast cancer metastasis

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