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Updated: Nov 15, 2025

Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells
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Caffeine promotes angiogenesis through modulating endothelial mitochondrial dynamics.

Li-Tao Wang1,2, Peng-Cheng He1,2, An-Qi Li3,4,5

  • 1Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510100, China.

Acta Pharmacologica Sinica
|March 5, 2021
PubMed
Summary
This summary is machine-generated.

Caffeine enhances blood vessel formation by promoting endothelial cell migration through mitochondrial fission. This process involves the cAMP/PKA/AMPK pathway, impacting cell energetics and migration, as confirmed in a mouse model.

Keywords:
angiogenesiscAMP/PKA/AMPK signalingcaffeineendothelial cellsmigrationmitochondrial dynamicsmouse model of hindlimb ischemia

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Area of Science:

  • Vascular biology
  • Cellular and molecular mechanisms
  • Bioenergetics

Background:

  • Caffeine is known to affect vascular functions.
  • Understanding caffeine's role in angiogenesis at a cellular level is crucial.

Purpose of the Study:

  • To investigate the angiogenic effects of physiological caffeine concentrations.
  • To elucidate the underlying mitochondrial and bioenergetic mechanisms of caffeine-induced endothelial cell behavior.

Main Methods:

  • In vitro studies using human umbilical vein endothelial cells (HUVECs) to assess tube formation, migration, and proliferation.
  • Analysis of signaling pathways including cAMP/PKA/AMPK.
  • Investigation of mitochondrial dynamics, specifically fission, using protein phosphorylation and genetic/pharmacological inhibition.
  • In vivo studies using a mouse model of hindlimb ischemia.

Main Results:

  • Caffeine (10-50 μM) significantly enhanced angiogenesis and endothelial cell migration without affecting proliferation.
  • Caffeine-induced migration involved the cAMP/PKA/AMPK pathway and mitochondrial fission via dynamin-related protein 1 (Drp1) activation.
  • Mitochondrial fission promoted by caffeine led to enhanced mitochondrial accumulation in lamellipodia and improved cellular energetics, crucial for migration.
  • Caffeine administration improved perfusion and angiogenesis in a mouse hindlimb ischemia model.

Conclusions:

  • Caffeine promotes angiogenesis and endothelial cell migration through a mechanism involving mitochondrial fission.
  • The cAMP/PKA/AMPK signaling pathway mediates caffeine's effects on mitochondrial dynamics and cell migration.
  • Mitochondrial fission is essential for caffeine-induced angiogenesis by regulating cell energetics and distribution.