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Functional tissue-engineered blood vessels from bone marrow progenitor cells.

Jin Yu Liu1, Daniel D Swartz, Hao Fan Peng

  • 1Bioengineering Laboratory, 908 Furnas Hall, Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Amherst, NY 14260, USA.

Cardiovascular Research
|May 22, 2007
PubMed
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Bone marrow-derived smooth muscle progenitor cells (BM-SMPC) show potential for cardiovascular tissue regeneration. These cells effectively form functional blood vessels, offering promise for cell-based therapies.

Area of Science:

  • Regenerative Medicine
  • Cardiovascular Biology
  • Stem Cell Research

Background:

  • Stem cells offer potential for cardiovascular tissue regeneration therapies.
  • Smooth muscle cells (SMC) are crucial components of vascular tissue.

Purpose of the Study:

  • To develop a novel method for isolating smooth muscle progenitor cells (SMPC) from bone marrow.
  • To evaluate the potential of bone marrow-derived SMC (BM-SMPC) for cardiovascular tissue engineering.

Main Methods:

  • Isolation of ovine bone marrow-derived smooth muscle progenitor cells (BM-SMPC) using fluorescence-activated cell sorting.
  • Characterization of BM-SMPC morphology, proliferation, and marker expression.
  • Assessment of BM-SMPC contractility in fibrin hydrogels.
  • Construction and implantation of tissue-engineered blood vessels using BM-SMPC and endothelial cells in lambs.

Related Experiment Videos

Main Results:

  • BM-SMPC exhibited similar morphology to vascular SMC but with higher proliferation potential and expression of SMC markers.
  • BM-SMPC demonstrated matrix contraction and vasoreactive contractility in vitro.
  • Implanted tissue-engineered blood vessels showed endothelialization, SMC alignment, collagen synthesis, and significant elastin production.
  • Elastin organization in engineered vessels closely resembled that of native blood vessels.

Conclusions:

  • BM-SMPC are a promising cell source for studying SMC differentiation.
  • BM-SMPC hold significant potential for developing cell therapies for cardiovascular diseases.
  • Tissue-engineered vascular grafts derived from BM-SMPC show favorable structural and functional characteristics.