RGD Reference Report - Expression pattern of notch1, 2 and 3 and Jagged1 and 2 in lymphoid and stromal thymus components: distinct ligand-receptor interactions in intrathymic T cell development. - Rat Genome Database

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Expression pattern of notch1, 2 and 3 and Jagged1 and 2 in lymphoid and stromal thymus components: distinct ligand-receptor interactions in intrathymic T cell development.

Authors: Felli, MP  Maroder, M  Mitsiadis, TA  Campese, AF  Bellavia, D  Vacca, A  Mann, RS  Frati, L  Lendahl, U  Gulino, A  Screpanti, I 
Citation: Felli MP, etal., Int Immunol. 1999 Jul;11(7):1017-25.
RGD ID: 8553281
Pubmed: PMID:10383933   (View Abstract at PubMed)

The suggested role of Notch1 or its mutants in thymocyte differentiation and T cell tumorigenesis raises the question of how the different members of the Notch family influence distinct steps in T cell development and the role played by Notch ligands in the thymus. We report here that different Notch receptor-ligand partnerships may occur inside the thymus, as we observed differential expression of Notch1, 2 and 3 receptors, their ligands Jagged1 and 2, and downstream intracellular effectors hairy and Enhancer of Split homolog 1 (HES-1) and hairy and Enhancer of Split homolog 5 (HES-5), depending on ontogenetic stage and thymic cell populations. Indeed, while Jagged2 is expressed in both stromal cells and thymocytes, Jagged1 expression is restricted to stromal cells. Moreover, a differential distribution of Notch3, with respect to Notch1, was observed in distinct age-related thymocyte subsets. Finally, Notch3 was preferentially up-regulated in thymocytes, following the induction of their differentiation by interaction with thymic epithelial cells expressing the cognate Jagged1 and 2 ligands, suggesting that, besides Notch1, Notch3 may also be involved in distinct steps of thymocyte development. Our results suggest that the Notch signaling pathway is involved in a complex interplay of T cell developmental stages, as a consequence of the heterogeneity and specific expression of members of the Notch receptor family and their cognate ligands, in distinct thymic cell compartments.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

Molecular Function
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
growth factor activity enablesISSUniProtKB:Q9Y2198553281PMID:10383933UniProt 

Objects Annotated

Genes (Rattus norvegicus)
Jag2  (jagged canonical Notch ligand 2)


Additional Information