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Alone and together: current approaches to targeting glutaminase enzymes as part of anti-cancer therapies
Thuy-Tien T Nguyen1, William P Katt2, Richard A Cerione1,2
1Department of Chemistry & Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
Abstract:
Metabolic reprogramming is a major hallmark of malignant transformation in cancer, and part of the so-called Warburg effect, in which the upregulation of glutamine catabolism plays a major role. The glutaminase enzymes convert glutamine to glutamate, which initiates this pathway. Inhibition of different forms of glutaminase (KGA, GAC, or LGA) demonstrated potential as an emerging anti-cancer therapeutic strategy. The regulation of these enzymes, and the molecular basis for their inhibition, have been the focus of much recent research. This review will explore the recent progress in understanding the molecular basis for activation and inhibition of different forms of glutaminase, as well as the recent focus on combination therapies of glutaminase inhibitors with other anti-cancer drugs.
Insights
Cancer cells reprogram metabolism via the Warburg effect, relying on glutamine breakdown. Inhibiting glutaminase enzymes (KGA, GAC, LGA) is a promising cancer therapy. This review details glutaminase regulation, inhibition mechanisms, and combination strategies.
Area of Science:
- Oncology
- Biochemistry
- Metabolic Pathways
Background:
- Metabolic reprogramming is a hallmark of cancer, characterized by the Warburg effect.
- Upregulation of glutamine catabolism is crucial in this process.
- Glutaminase enzymes initiate this pathway by converting glutamine to glutamate.
Purpose of the Study:
- To review recent progress in understanding glutaminase enzyme activation and inhibition.
- To explore the molecular basis of glutaminase inhibition.
- To examine combination therapies involving glutaminase inhibitors.
Main Methods:
- Literature review of recent research on glutaminase.
- Analysis of molecular mechanisms for enzyme regulation and inhibition.
- Synthesis of findings on combination therapeutic strategies.
Main Results:
- Glutaminase inhibition (KGA, GAC, LGA) shows potential as an anti-cancer strategy.
- Understanding enzyme regulation and inhibition mechanisms is advancing.
- Combination therapies are a focus for enhanced efficacy.
Conclusions:
- Targeting glutaminase is a promising therapeutic avenue in oncology.
- Further research into molecular mechanisms and combination strategies is warranted.
- Glutaminase inhibitors offer potential for novel cancer treatments.
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