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Eur J Immunol. 1995 Feb;25(2):418-25.

Mouse thymus dendritic cells: kinetics of development and changes in surface markers during maturation.

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Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.


The early thymus precursor population of adult mice has the capacity to generate T cells, B cells and dendritic cells (DC). These precursors were injected into the thymus of irradiated recipients in order to follow the kinetics of thymic DC development. The resultant cohort of T-lineage cells developing in the thymus was accompanied by a parallel cohort of DC, present at 10(3)-fold lower frequency. The intrathymic lifespan of these DC was as short as that of T-lineage thymocytes. As the thymic DC matured, some markers characteristic of the original precursor population gradually declined (Ly-5, c-kit, Sca-2) whereas markers characteristic of thymic DC appeared and were maintained (major histocompatibility complex class II, CD11c, NLDC-145 and CD8 alpha). Some thymic DC expressed the early B-cell marker BP-1, and BP-1 mRNA, throughout their maturation. The surface markers on thymic DC could be divided into two groups. Some markers, including class I and class II MHC, CD8 alpha and BP-1, appeared to be integral components of the DC surface. In contrast, other markers, including Thy-1, CD4 and CD8 beta, had probably been picked up from associated thymocytes.

[Indexed for MEDLINE]

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