Signal integration and crosstalk during thymocyte migration and emigration

PE Love, A Bhandoola - Nature Reviews Immunology, 2011 - nature.com
Nature Reviews Immunology, 2011nature.com
The thymus produces self-tolerant functionally competent T cells. This process involves the
import of multipotent haematopoietic progenitors that are then signalled to adopt the T cell
fate. Expression of T cell-specific genes, including those encoding the T cell receptor (TCR),
is followed by positive and negative selection and the eventual export of mature T cells.
Significant progress has been made in elucidating the signals that direct progenitor cell
trafficking to, within and out of the thymus. These advances are the subject of this Review …
Abstract
The thymus produces self-tolerant functionally competent T cells. This process involves the import of multipotent haematopoietic progenitors that are then signalled to adopt the T cell fate. Expression of T cell-specific genes, including those encoding the T cell receptor (TCR), is followed by positive and negative selection and the eventual export of mature T cells. Significant progress has been made in elucidating the signals that direct progenitor cell trafficking to, within and out of the thymus. These advances are the subject of this Review, with a particular focus on the role of reciprocal cooperative and regulatory interactions between TCR- and chemokine receptor-mediated signalling.
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