Improved microvascular network in vitro by human blood outgrowth endothelial cells relative to vessel-derived endothelial cells

A. L. Sieminski, R. P. Hebbel, K. J. Gooch

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

Evidence suggests that bone marrow-derived cells circulating in adult blood, sometimes called endothelial progenitor cells, contribute to neovascularization in vivo and give rise to cells expressing endothelial markers in culture. To explore the utility of blood-derived cells expressing an endothelial phenotype for creating tissue-engineered microvascular networks, we employed a three-dimensional in vitro angiogenesis model to compare microvascular network formation by human blood outgrowth endothelial cells (HBOECs) with three human vessel-derived endothelial cell (EC) types: human umbilical vein ECs (HUVECs), and adult and neonatal human microvascular ECs. Under every condition investigated, HBOECs within collagen gels elongated significantly more than any other cell type. Under all conditions investigated, gel contraction and cell elongation were correlated, with HBOECs demonstrating the largest generation of force. HBOECs did not exhibit a survival advantage, nor did they enhance elongation of HUVECs when the two cell types were cocultured. Network formation of both HBOECs and HUVECs was inhibited by blocking antibodies to α2β1, but not αvβ3, integrins. Taken together, these data suggest that superior network exhibited by HBOECs relative to vessel-derived endothelial cells is not due to a survival advantage, use of different integrins, or secretion of an autocrine/paracrine factor, but may be related to increased force generation.

Original languageEnglish (US)
Pages (from-to)1332-1345
Number of pages14
JournalTissue Engineering
Volume11
Issue number9-10
DOIs
StatePublished - Sep 2005

Fingerprint Dive into the research topics of 'Improved microvascular network in vitro by human blood outgrowth endothelial cells relative to vessel-derived endothelial cells'. Together they form a unique fingerprint.

Cite this