AMP-Activated Protein Kinase Signalling in Cancer and Cardiac Hypertrophy

Yulia Lipovka1, John P Konhilas1

  • 1Department of Physiology, University of Arizona, Sarver Molecular Cardiovascular Research Program, USA.

Cardiovascular Pharmacology: Open Access
|January 23, 2016
PubMed

Insights

The AMP-protein kinase (AMPK) pathway regulates cellular energy. Cancer drugs can disrupt AMPK, increasing cardiac disease risk and impacting cancer therapy effectiveness.

Area of Science:

  • Biochemistry
  • Cardiovascular Biology
  • Oncology

Background:

  • The AMP-protein kinase (AMPK) pathway is crucial for cellular energy balance across diverse tissues.
  • AMPK signaling is increasingly recognized for its roles in cardiovascular health and tumor biology.
  • A growing body of evidence links anti-cancer therapies to increased cardiac disease risk, often associated with AMPK pathway dysregulation.

Purpose of the Study:

  • To review the role of the AMPK signaling axis in cardiac and tumor metabolism.
  • To examine how cancer drugs may inhibit AMPK off-target, potentially leading to cardiovascular complications.
  • To discuss the implications of deregulated AMPK signaling in cardiac hypertrophy.

Main Methods:

  • Literature review focusing on AMPK signaling in cancer and cardiovascular contexts.
  • Analysis of existing research on anti-cancer drug mechanisms and their cardiovascular side effects.
  • Exploration of molecular pathways involved in AMPK dysregulation and cardiac hypertrophy.

Main Results:

  • AMPK plays a dual role in both cardiac and tumor metabolism.
  • Certain anti-cancer agents can inhibit AMPK, contributing to cardiovascular disease risk.
  • Dysregulated AMPK signaling is implicated in the pathogenesis of cardiac hypertrophy.

Conclusions:

  • Understanding AMPK's role in cardiac and tumor metabolism is vital for developing safer and more effective cancer treatments.
  • Targeting or avoiding off-target AMPK inhibition by cancer drugs may mitigate cardiovascular risks.
  • Further research into AMPK pathways can lead to novel therapeutic strategies for both cancer and heart disease.

Related Concept Videos

mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
5.1K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

1.7K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
6.3K
cAMP-dependent Protein Kinase Pathways01:25

cAMP-dependent Protein Kinase Pathways

Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
9.2K
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
9.2K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.9K