Linked Life Data

12480250

Source:http://linkedlifedata.com/resource/pubmed/id/12480250

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2002-12-13
pubmed:abstractText
It is generally accepted that dendritic cells can be generated from either myeloid or lymphoid derived progenitors. Ample information has been collected on the development and nature of myeloid DC type 1 (DC1). In contrast, our current understanding on the origin and function of the lymphoid derived DC type 2 (DC2) is still limited but is increasing rapidly. Here we will summarize recent findings on the developmental origin of the precursor of DC2 (pre-DC2). The presence of pre-DC2 has been revealed in bone marrow, fetal liver, and cord blood, where they develop from hematopoietic stem cells (HSC) most likely via an intermediate pro-DC2 stage. Both in human and mouse, development of pre-DC2 depends on the cytokine FLT3-ligand (FLT3-L). In addition, transcription factors such as Spi-B and members of the basic helix-loop helix (bHLH) family have been shown to be involved in the proper differentiation of HSC into pre-DC2. The human thymus contains a population of cells that closely resembles the peripheral pre-DC2, including interferon (INF)-a production after viral stimulation. Some phenotypic differences have been observed however. Furthermore, we have shown that the thymic microenvironment is able to support development of pre-DC2 from HSC in vivo. A thymus independent pathway of pre-DC2 development exists as well, although at present it is not clear where these extrathymic pre-DC2 are generated. In regard of the absence of a phenotypic defined pro-DC2 population in the thymus, we speculate that development of thymic pre-DC2 may differ from peripheral pre-DC2. The challenge of the near future will be to determine the role of pre-DC2 during thymic T cell development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0198-8859
pubmed:author
pubmed:issnType
Print
pubmed:volume
63
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1072-80
pubmed:dateRevised
2005-11-16
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Developmental origin of pre-DC2.
pubmed:affiliation
Division of Immunology, Plesmanlaan 121, Amsterdam, The Netherlands. b.blom@nki.nl
pubmed:publicationType
Journal Article, Review