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Updated: May 30, 2025

Oligopeptide Competition Assay for Phosphorylation Site Determination
Published on: May 18, 2017
Small Molecule Modulators of AMP-Activated Protein Kinase (AMPK) Activity and Their Potential in Cancer Therapy
Juliet E Strang1, Daniel D Astridge1, Vu T Nguyen1
1Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, 12850 East Montview Boulevard, Aurora, Colorado 80045, United States.
Abstract:
AMP-activated protein kinase (AMPK) is a central mediator of cellular metabolism and is activated in direct response to low ATP levels. Activated AMPK inhibits anabolic pathways and promotes catabolic activities that generate ATP through the phosphorylation of multiple target substrates. AMPK is a therapeutic target for activation in several chronic metabolic diseases, and there is increasing interest in targeting AMPK activity in cancer where it can act as a tumor suppressor or conversely it can support cancer cell survival. Small molecule AMPK activators and inhibitors have demonstrated some success in suppressing cancer growth, survival, and drug resistance in preclinical cancer models. In this perspective, we summarize the role of AMPK in cancer and drug resistance, the influence of the tumor microenvironment on AMPK activity, and AMPK activator and inhibitor development. In addition, we discuss the potential importance of isoform-selective targeting of AMPK and approaches for selective AMPK targeting in cancer.
Insights
AMP-activated protein kinase (AMPK) regulates cellular metabolism and ATP production. Targeting AMPK shows promise in treating metabolic diseases and cancer, influencing tumor growth and drug resistance.
Area of Science:
- Biochemistry
- Cellular Metabolism
- Oncology
Background:
- AMP-activated protein kinase (AMPK) is a key regulator of cellular energy homeostasis, activated by low ATP levels.
- AMPK influences both anabolic and catabolic pathways to restore cellular energy balance.
- AMPK plays a dual role in cancer, acting as a tumor suppressor or promoting cancer cell survival.
Purpose of the Study:
- To review the multifaceted role of AMPK in cancer development and drug resistance.
- To discuss the impact of the tumor microenvironment on AMPK signaling.
- To summarize current strategies for developing AMPK activators and inhibitors for cancer therapy.
Main Methods:
- Literature review and synthesis of existing research on AMPK in cancer.
- Analysis of preclinical data on small molecule AMPK modulators.
- Discussion of emerging concepts in AMPK isoform-selective targeting.
Main Results:
- Small molecule AMPK activators and inhibitors have shown efficacy in preclinical cancer models.
- The tumor microenvironment significantly influences AMPK activity in cancer cells.
- Isoform-selective targeting of AMPK presents a promising therapeutic avenue.
Conclusions:
- AMPK is a critical therapeutic target in oncology with potential for both tumor suppression and modulation of cancer cell survival.
- Understanding AMPK's role in the tumor microenvironment is crucial for effective therapeutic development.
- Targeted approaches, including isoform selectivity, are key to optimizing AMPK-based cancer treatments.
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