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Related Concept Videos

Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

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Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
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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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Overview of Regeneration and Repair01:19

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
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Related Experiment Video

Updated: Dec 8, 2025

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Bone Microvasculature: Stimulus for Tissue Function and Regeneration.

Eun-Jin Lee1, Mahim Jain2, Stella Alimperti1

  • 1American Dental Association Science and Research Institute, Gaithersburg, Maryland, USA.

Tissue Engineering. Part B, Reviews
|September 17, 2020
PubMed
Summary

Bone vasculature is crucial for bone health and regeneration. This review explores how blood vessel health impacts bone diseases and highlights tissue engineering strategies using stem cells and growth factors for therapeutic bone repair.

Keywords:
angiogenesisbone vasculaturediseasesgrowth factorsosteogenesisstem cellstissue engineering

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Area of Science:

  • Bone biology
  • Vascular biology
  • Regenerative medicine

Background:

  • Bone homeostasis relies on microvascular integrity.
  • Vascular dysfunction contributes to bone diseases like osteoporosis and avascular necrosis.

Purpose of the Study:

  • To review the role of bone vasculature in development and disease.
  • To explore tissue engineering strategies for bone regeneration.

Main Methods:

  • Literature review focusing on bone vascularization and tissue engineering.
  • Analysis of stem cell and growth factor roles in vascular regeneration.

Main Results:

  • Bone vasculature is essential for development, regeneration, and remodeling.
  • Tissue engineering approaches show promise for inducing bone microvasculature regeneration and mineralization.

Conclusions:

  • Understanding bone vasculature is key to developing new treatments for bone disorders.
  • Vascular tissue engineering strategies have broad therapeutic potential for bone and other organ diseases.