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Endothelial Connexins in Developmental and Pathological Angiogenesis.

Jacques-Antoine Haefliger1, Paolo Meda2, Florian Alonso3

  • 1Department of Medicine, Lausanne University Hospital, 1005 Lausanne, Switzerland.

Cold Spring Harbor Perspectives in Medicine
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Connexins (Cxs) are key proteins in blood vessels, facilitating cell communication for vascular health. New research highlights their crucial role in forming microvascular networks and regulating blood vessel growth (angiogenesis).

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Area of Science:

  • Vascular Biology
  • Cellular Signaling
  • Molecular Medicine

Background:

  • Connexins (Cxs) form gap junction channels, essential for intercellular communication in endothelial cells (ECs).
  • ECs use Cx channels to maintain vascular homeostasis, particularly in large arteries.
  • Emerging evidence points to Cxs' role in microvascular network formation.

Purpose of the Study:

  • To investigate the role of endothelial connexins (Cxs) in microvascular network formation.
  • To explore how Cxs regulate physiological and pathological angiogenesis.
  • To identify endothelial Cxs as potential therapeutic targets for angiogenesis control.

Main Methods:

  • Analysis of developmental and pathological models.
  • Investigation of canonical and noncanonical functions of endothelial Cxs.

Main Results:

  • Endothelial Cxs are critical for the coordinated response of ECs to stimuli during angiogenesis.
  • Cxs regulate both physiological and pathological blood vessel formation.
  • Studies reveal diverse functions of Cxs beyond simple channel formation.

Conclusions:

  • Endothelial Cxs play a significant role in regulating angiogenesis.
  • Targeting Cxs offers a promising strategy for controlling aberrant blood vessel growth.
  • Further research into Cxs' functions can advance therapeutic approaches for vascular diseases.