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The AMP-activated protein kinase (AMPK) and cancer: many faces of a metabolic regulator

Brandon Faubert1, Emma E Vincent1, Maya C Poffenberger1

  • 1Goodman Cancer Research Centre, McGill University, Montreal, QC H3A 1A3, Canada; Department of Physiology, McGill University, Montreal, QC H3G 1Y6, Canada.

Cancer Letters
|February 4, 2014
PubMed

Insights

AMP-activated protein kinase (AMPK) has dual roles in cancer, acting as both a tumor suppressor and promoter. Understanding its context-dependent functions is crucial for developing effective cancer therapies targeting cellular metabolism.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • AMP-activated protein kinase (AMPK) is a key regulator of cellular energy homeostasis.
  • AMPK is integrated into signaling networks with tumor suppressors like LKB1, TSC2, and p53.
  • AMPK's role in cancer is complex, with context-dependent pro- or anti-tumorigenic effects.

Purpose of the Study:

  • To discuss the dual role of AMPK in cancer.
  • To explore the contextual nature of AMPK's influence on tumor growth and metabolism.
  • To evaluate the therapeutic potential of targeting AMPK in cancer treatment.

Main Methods:

  • Literature review and synthesis of current research on AMPK in cancer biology.
  • Analysis of signaling pathways involving AMPK and its interaction with tumor suppressors.
  • Discussion of metabolic reprogramming and cellular plasticity in cancer.

Main Results:

  • Loss of AMPK activity can promote tumor growth by altering cell metabolism.
  • AMPK activation can also support tumor progression by enhancing metabolic adaptability.
  • AMPK exhibits context-dependent functions, acting as both a tumor suppressor and promoter.

Conclusions:

  • The role of AMPK in cancer is multifaceted and highly context-dependent.
  • Targeting AMPK with activators or inhibitors requires careful consideration of the specific tumor microenvironment and molecular context.
  • Further research is needed to elucidate the precise mechanisms governing AMPK's dual roles for optimized therapeutic strategies.
Keywords:
AMPKHIF-1αTumor metabolismWarburg effectmTOR

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