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  • Title: Expression of Notch receptors and ligands on immature and mature T cells.
    Author: Koyanagi A, Sekine C, Yagita H.
    Journal: Biochem Biophys Res Commun; 2012 Feb 24; 418(4):799-805. PubMed ID: 22310713.
    Abstract:
    Notch plays multiple roles in T cell development in the thymus and T cell differentiation in the periphery. In order to systematically examine the role of Notch in T cell biology, we determined the cell surface expression of all Notch receptors and ligands on various populations of T cells by using a panel of specific monoclonal antibodies we recently established. Notch1 and Notch3 were upregulated at double-negative (DN) 2-DN4 stages of immature thymocytes, then downregulated on mature single-positive thymocytes and peripheral T cells, but were rapidly upregulated again upon activation. Notch2 was consistently expressed on T cells while Notch4 was not. Jagged1 and Jagged2 were expressed at double-positive stage of immature T cells. Jagged2 was also inducible on mature T cells upon activation. In contrast, no Delta-like (Dll) 1 or Dll4 expression was observed on T cells. These comprehensive profiling of the expression of Notch receptors and ligands would be informative to fully understand the role of individual Notch receptors and ligands in T cell development and differentiation.
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