Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2003-9-5
pubmed:abstractText
Human umbilical cord blood (UCB) contains high numbers of endothelial progenitors cells (EPCs) characterized by coexpression of CD34 and CD133 markers. Prior studies have shown that CD34+/CD133+ EPCs from the cord or peripheral blood (PB) can give rise to endothelial cells and induce angiogenesis in ischemic tissues. In the present study, it is shown that freshly isolated human cord blood CD34+ cells injected into ischemic adductor muscles gave rise to endothelial and, unexpectedly, to skeletal muscle cells in mice. In fact, the treated limbs exhibited enhanced arteriole length density and regenerating muscle fiber density. Under similar experimental conditions, CD34- cells did not enhance the formation of new arterioles and regenerating muscle fibers. In nonischemic limbs CD34+ cells increased arteriole length density but did not promote formation of new muscle fibers. Endothelial and myogenic differentiation ability was maintained in CD34+ cells after ex vivo expansion. Myogenic conversion of human cord blood CD34+ cells was also observed in vitro by coculture onto mouse myoblasts. These results show that human cord blood CD34+ cells differentiate into endothelial and skeletal muscle cells, thus providing an indication of human EPCs plasticity. The full text of this article is available online at http://www.circresaha.org.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1524-4571
pubmed:author
pubmed:issnType
Electronic
pubmed:day
5
pubmed:volume
93
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
e51-62
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:12919944-Animals, pubmed-meshheading:12919944-Antigens, CD34, pubmed-meshheading:12919944-Cell Differentiation, pubmed-meshheading:12919944-Cell Line, pubmed-meshheading:12919944-Cells, Cultured, pubmed-meshheading:12919944-Coculture Techniques, pubmed-meshheading:12919944-Endothelium, Vascular, pubmed-meshheading:12919944-Fetal Blood, pubmed-meshheading:12919944-Hematopoietic Stem Cell Transplantation, pubmed-meshheading:12919944-Hematopoietic Stem Cells, pubmed-meshheading:12919944-Hindlimb, pubmed-meshheading:12919944-Humans, pubmed-meshheading:12919944-Immunohistochemistry, pubmed-meshheading:12919944-Infant, Newborn, pubmed-meshheading:12919944-Ischemia, pubmed-meshheading:12919944-Mice, pubmed-meshheading:12919944-Muscle, Skeletal, pubmed-meshheading:12919944-Regeneration, pubmed-meshheading:12919944-Transplantation, Heterologous
pubmed:year
2003
pubmed:articleTitle
Myoendothelial differentiation of human umbilical cord blood-derived stem cells in ischemic limb tissues.
pubmed:affiliation
Laboratorio di Biologia Vascolare e Terapia Genica, Centro Cardiologico Monzino, IRCCS, Milan, Italy. m.pesce@idi.it
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't