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Incomplete and transitory decrease of glycolysis: a new paradigm for anti-angiogenic therapy?

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Cell Cycle (Georgetown, Tex.)
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Summary
This summary is machine-generated.

The glycolytic enzyme PFKFB3 is crucial for endothelial cell (EC) function during blood vessel formation. Its deficiency impairs EC migration and proliferation, hindering vascular sprouting and angiogenesis.

Keywords:
angiogenesisendothelial cellglycolysismetabolismvessel sprouting

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Vascular Biology

Background:

  • Endothelial tip cells guide vessel sprouts, while stalk cells elongate them.
  • Tip and stalk cell phenotypes are dynamic and interchangeable.
  • Endothelial cells (ECs) upregulate glycolysis during new blood vessel formation.

Purpose of the Study:

  • To investigate the role of the glycolytic activator PFKFB3 in endothelial cell (EC) function during vascular sprouting.
  • To determine how PFKFB3 influences tip and stalk cell phenotypes and their interconversion.
  • To assess the therapeutic potential of targeting PFKFB3 in pathological angiogenesis.

Main Methods:

  • Genetic deficiency of PFKFB3 in ECs.
  • Overexpression of PFKFB3.
  • Chimeric mosaic mice studies.
  • Pharmacological blockade of PFKFB3.

Main Results:

  • Genetic deficiency of PFKFB3 impairs EC migration and proliferation, reducing vascular sprouting.
  • PFKFB3 promotes the tip cell phenotype, overriding Notch signaling's pro-stalk activity.
  • PFKFB3-deficient ECs exhibit reduced competitive ability in forming new blood vessels.
  • Pharmacological PFKFB3 blockade reduces pathological angiogenesis with limited systemic effects.

Conclusions:

  • PFKFB3-driven glycolysis is essential for promoting the tip cell phenotype and overall vascular sprouting.
  • PFKFB3 plays a critical role in EC competition and blood vessel formation.
  • Targeting PFKFB3 offers a potential strategy for treating pathological angiogenesis.