Blood-derived angioblasts accelerate blood-flow restoration in diabetic mice

Gina C. Schatteman, Heather D. Hanlon, Chunhua Jiao, Sherry G. Dodds, Barbara A. Christy

Research output: Contribution to journalArticlepeer-review

431 Scopus citations


Endothelial cell progenitors, angioblasts, have been detected in the peripheral blood of adult humans, mice, and rabbits. These cells have been shown to incorporate into the endothelium of newly forming blood vessels in pathological and nonpathological conditions. Here we investigated the possibility that the CD34-expressing leukocytes (CD34+ cells) that appear to be enriched for angioblasts could be used to accelerate the rate of blood-flow restoration in nondiabetic and diabetic mice undergoing neovascularization due to hindlimb ischemia. CD34+ cells did not accelerate the restoration of flow in nondiabetic mice, but dramatically increased it in diabetic mice. Furthermore, CD34+ cells derived from type 1 diabetics produced fewer differentiated endothelial cells in culture than did their type 2 diabetic- or nondiabetic-derived counterparts. In vitro experiments suggest that hyperglycemia per se does not alter the ability of angioblasts to differentiate or of angioblast-derived endothelial cells to proliferate. In contrast, hyperinsulinemia may enhance angioblast differentiation but impair angioblast-derived endothelial cell survival or proliferation. Our findings suggest that CD34+ cells may be a useful tool for therapeutic angiogenesis in diabetics.

Original languageEnglish (US)
Pages (from-to)571-578
Number of pages8
JournalJournal of Clinical Investigation
Issue number4
StatePublished - Aug 2000

ASJC Scopus subject areas

  • Medicine(all)


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