Journal
BLOOD
Volume 111, Issue 3, Pages 1302-1305Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2007-06-094318
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Funding
- NCI NIH HHS [R01 CA085140, R01CA115767, P01 CA080124, P01CA80124, R01 CA115767, R01 CA096915, R01CA85140, R01CA96915] Funding Source: Medline
- NIGMS NIH HHS [T32 GM007753] Funding Source: Medline
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Tissue engineering requires formation of a de novo stable vascular network. Because of their ability to proliferate, differentiate into endothelial cells, and form new vessels, blood-derived endothelial progenitor cells (EPCs) are attractive source of cells for use in engineering blood vessels. However, the durability and function of EPC-derived vessels implanted in vivo are unclear. To this end, we directly compared formation and functions of tissue-engineered blood vessels generated by peripheral blood- and umbilical cord blood-derived EPCs in a model of in vivo vasculogenesis. We found that adult peripheral blood EPCs form blood vessels that are unstable and regress within 3 weeks. In contrast, umbilical cord blood EPCs form normal-functioning blood vessels that last for more than 4 months. These vessels exhibit normal blood flow, perm-selectivity to macromolecules, and induction of leukocyte-endothelial interactions in response to cytokine activation similar to normal vessels. Thus, umbilical cord blood EPCs hold great therapeutic potential, and their use should be pursued for vascular engineering.
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