Linked Life Data

12218099

Source:http://linkedlifedata.com/resource/pubmed/id/12218099

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2002-9-9
pubmed:abstractText
The development of T cells in the thymus is regulated by a series of stage-specific transcription factors. Deregulated expression of these factors can lead to alterations in thymocyte development with the production of aberrant cell subsets and predispose to tumor formation. The three genes of the Runx family are multilineage regulators of differentiation that have been reported to be expressed in the T cell lineage. However, their roles in thymocyte development and T cell function are largely unknown. While the Runx2/Cbfa1/AML3/Pebp2alphaa gene plays a primary role in osteogenesis and regulates a number of key bone regulatory genes, we show here that Runx2 is also expressed during the earliest phase of thymic development, in the double-negative subset. Furthermore, enforced expression of Runx2 in transgenic mice under the CD2 promoter was found to affect T cell development at a stage coincident with beta-selection, resulting in an expansion of double-negative CD4 and CD8 immature single-positive cells. Unlike wild-type controls this preselection population (CD4-CD8+heat-stable Ag+TCR-) is in a nonproliferative state, but appears to be primed for further transformation events. Overall the data suggest that Runx2 accelerates development to the CD8 immature single-positive stage, but retards subsequent differentiation to the double-positive stage. Thus, Runx2 joins a small group of transcription factors that can interfere with early T cell development, cause an expansion of a specific subset, and predispose to lymphoma.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
169
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2866-74
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:12218099-Animals, pubmed-meshheading:12218099-Antigens, CD2, pubmed-meshheading:12218099-CD8-Positive T-Lymphocytes, pubmed-meshheading:12218099-Cell Differentiation, pubmed-meshheading:12218099-Cell Division, pubmed-meshheading:12218099-Cell Survival, pubmed-meshheading:12218099-Core Binding Factor Alpha 1 Subunit, pubmed-meshheading:12218099-Core Binding Factor Alpha 2 Subunit, pubmed-meshheading:12218099-Core Binding Factor alpha Subunits, pubmed-meshheading:12218099-DNA-Binding Proteins, pubmed-meshheading:12218099-Genes, T-Cell Receptor beta, pubmed-meshheading:12218099-Immunophenotyping, pubmed-meshheading:12218099-Mice, pubmed-meshheading:12218099-Mice, Transgenic, pubmed-meshheading:12218099-Neoplasm Proteins, pubmed-meshheading:12218099-Promoter Regions, Genetic, pubmed-meshheading:12218099-Proto-Oncogene Proteins, pubmed-meshheading:12218099-Receptors, Antigen, T-Cell, alpha-beta, pubmed-meshheading:12218099-T-Lymphocyte Subsets, pubmed-meshheading:12218099-Thymus Gland, pubmed-meshheading:12218099-Transcription Factors
pubmed:year
2002
pubmed:articleTitle
Enforced expression of Runx2 perturbs T cell development at a stage coincident with beta-selection.
pubmed:affiliation
Molecular Oncology Laboratory, Institute of Comparative Medicine, University of Glasgow Veterinary School, Glasgow, United Kingdom. f.vaillant@vet.gla.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't