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Can we selectively target AML stem cells?

Craig T Jordan1

  • 1Division of Hematology, University of Colorado Anschutz Campus, Denver, CO, USA.

Best Practice & Research. Clinical Haematology
|November 30, 2019
PubMed
Summary
This summary is machine-generated.

Acute myeloid leukemia stem cells rely on amino acid metabolism. BCL2 inhibition with venetoclax can target this, but resistance may occur through alternate metabolic pathways, suggesting potential patient stratification methods.

Keywords:
AMLAcute myeloid leukemiaAmino acid metabolismAzacitidineImmunophenotypeLSCLeukemia stem cellOxidative phosphorylationVenetoclax

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Area of Science:

  • Biochemistry
  • Oncology
  • Metabolomics

Background:

  • Acute myeloid leukemia (AML) leukemia stem cells (LSCs) depend on amino acid metabolism for energy.
  • Oxidative phosphorylation is crucial for LSC survival and can be targeted by BCL2 inhibition.

Purpose of the Study:

  • To investigate the metabolic vulnerabilities of de novo AML LSCs.
  • To explore the potential of venetoclax in targeting LSC metabolism.
  • To identify metabolic markers for predicting response to venetoclax therapy.

Main Methods:

  • Analysis of amino acid metabolism in AML LSCs.
  • Investigating the effects of BCL2 inhibition on oxidative phosphorylation.
  • Evaluating patient-specific metabolic profiles.

Main Results:

  • De novo AML LSCs are highly dependent on amino acid metabolism for the TCA cycle and oxidative phosphorylation.
  • Venetoclax selectively downregulates oxidative phosphorylation in AML LSCs by perturbing amino acid metabolism.
  • Patients resistant to venetoclax may utilize alternative metabolic pathways to maintain oxidative phosphorylation.

Conclusions:

  • Targeting amino acid metabolism via BCL2 inhibition is a promising strategy for AML treatment.
  • Metabolic profiling may identify patients likely to respond or resist venetoclax therapy.
  • Understanding LSC metabolic heterogeneity is key for optimizing AML treatment strategies.