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Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
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Endothelial cells and the IGF system.

Leon A Bach1

  • 1Department of Medicine (Alfred)Monash University, Prahran 3181, AustraliaDepartment of Endocrinology and DiabetesAlfred Hospital, Commercial Road, Melbourne 3004, Australia Department of Medicine (Alfred)Monash University, Prahran 3181, AustraliaDepartment of Endocrinology and DiabetesAlfred Hospital, Commercial Road, Melbourne 3004, Australia leon.bach@monash.edu.

Journal of Molecular Endocrinology
|October 30, 2014
PubMed
Summary
This summary is machine-generated.

Insulin-like growth factors (IGFs) are crucial for endothelial cell function, promoting blood vessel formation and repair. Their complex roles in vascular disease highlight potential therapeutic targets.

Keywords:
angiogenesisbinding proteinendothelial cellinsulin-like growth factorreceptor

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Area of Science:

  • Vascular Biology
  • Endocrinology
  • Cellular Physiology

Background:

  • Endothelial cells are vital for vascular health, regulating tone, thrombosis, inflammation, and angiogenesis.
  • Dysregulation of endothelial cell function is implicated in diseases like atherosclerosis, cancer, and retinopathy.
  • Insulin-like growth factors (IGFs) are key regulators of endothelial cell physiology.

Purpose of the Study:

  • To review the multifaceted roles of IGFs in endothelial cell function and vascular diseases.
  • To explore the mechanisms underlying IGF action on endothelial cells, including receptor interactions.
  • To assess the potential of modulating the IGF system for therapeutic interventions in vascular pathologies.

Main Methods:

  • Literature review of studies investigating IGFs and endothelial cells.
  • Analysis of IGF signaling pathways involving IGF1 and IGF2/mannose 6-phosphate receptors.
  • Examination of the impact of IGFs on endothelial progenitor cells and angiogenesis.

Main Results:

  • IGFs promote endothelial cell migration, tube formation, and nitric oxide production.
  • IGFs enhance the number and function of endothelial progenitor cells, potentially protecting against atherosclerosis.
  • IGF system dysregulation is linked to angiogenesis in cancer and eye diseases.

Conclusions:

  • The IGF system plays a significant role in endothelial cell function and vascular homeostasis.
  • Therapeutic modulation of the IGF system shows promise for treating vascular diseases, but requires further investigation.
  • Tissue-specific effects and distinct roles in disease phases necessitate nuanced therapeutic strategies.