Linked Life Data

16946001

Source:http://linkedlifedata.com/resource/pubmed/id/16946001

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2006-9-1
pubmed:abstractText
We examined whether ex vivo expansion of umbilical cord blood progenitor cells affected their capacity to generate immune cells such as T lymphocytes (TLs) and dendritic cells (DCs). The capacity to generate TLs from cord blood CD34(+) cells expanded for 14 days (d14) was compared with that of nonexpanded CD34(+) cells (d0) using fetal thymus organ cultures or transfer into nonobese diabetic/severe combined immunodeficient mice. The cell preparations yielded comparable percentages of immature (CD4(+)CD8(-), CD4(+)CD8(+)) TLs and functional mature (CD3(+)CD4(+), CD3(+)CD8(+)) TLs with an analogous TCR (T-cell receptor)-Vbeta repertoire pattern. As regards DCs, d0 and d14 CD34(+) cells also yielded similar percentages of CD1a(+) DCs with the same expression levels of HLA-DR, costimulatory and adhesion molecules, and chemokine receptors. DCs derived from either d14 or d0 CD34(+) stimulated allogeneic TLs to the same extent, and the cytokine pattern production of these allogeneic TLs was similar with no shift toward a predominant Th1 or Th2 response. Even though the intrinsic capacity of d14 CD34(+) cells to generate DCs was 13-fold lower than that of d0 CD34(+) cells, this reduction was offset by the prior amplification of the CD34(+) cells, resulting in the overall production of 15-fold more DCs. These data indicate that ex vivo expansion of CD34(+) cells does not impair T lymphopoiesis nor DC differentiation capacity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1066-5099
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2150-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Ex vivo expansion does not alter the capacity of umbilical cord blood CD34+ cells to generate functional T lymphocytes and dendritic cells.
pubmed:affiliation
Laboratoire d'Hématologie, Unité de Formation et de Recherche EA1638, Université Pierre et Marie Curie, CHU Saint Antoine, Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't