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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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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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The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
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Related Experiment Video

Updated: Oct 23, 2025

Tissue Engineering by Intrinsic Vascularization in an In Vivo Tissue Engineering Chamber
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The simpler, the better: tissue vascularization using the body's own resources.

Matthias W Laschke1, Michael D Menger1

  • 1Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, Germany.

Trends in Biotechnology
|August 18, 2021
PubMed
Summary

Autologous vascularization strategies leverage the body's own resources for tissue regeneration. These simpler methods are nearing clinical use, offering feasible and safe patient treatments in regenerative medicine.

Keywords:
AV loopmicrovascular fragmentsnanofatplatelet-rich plasmastromal vascular fractiontissue engineering

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Area of Science:

  • Regenerative Medicine
  • Vascular Biology
  • Tissue Engineering

Background:

  • Effective tissue regeneration relies heavily on adequate vascularization.
  • Autologous strategies utilize the patient's own biological resources for vascularization.
  • Current approaches aim to simplify clinical translation compared to complex cell-based methods.

Purpose of the Study:

  • To review autologous vascularization strategies for tissue regeneration.
  • To highlight the clinical feasibility and advantages of these approaches.
  • To emphasize their readiness for patient application in personalized medicine.

Main Methods:

  • Review of blood-derived factor preparations for vascularization.
  • Analysis of adipose tissue-based vascularization techniques.
  • Evaluation of in situ vascularized tissue engineering methods.

Main Results:

  • Autologous strategies offer simpler, safer, and more feasible clinical translation.
  • These methods bypass complex cell manipulation, reducing regulatory hurdles.
  • Personalized medicine concepts are enabling successful patient treatments.

Conclusions:

  • Autologous vascularization strategies are highly promising for clinical regenerative medicine.
  • Their inherent simplicity facilitates translation and broad patient application.
  • These approaches represent a significant advancement towards personalized therapeutic solutions.