Erschienen in:
01.07.2009
Shortening the immunodeficient period after hematopoietic stem cell transplantation
verfasst von:
Isabelle André-Schmutz, Emmanuelle Six, Delphine Bonhomme, Julien Rouiller, Liliane Dal Cortivo, Alain Fischer, Marina Cavazzana-Calvo
Erschienen in:
Immunologic Research
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Ausgabe 1-3/2009
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Abstract
The delayed reconstitution of the T-lymphoid compartment represents a major clinical challenge after HLA-mismatched hematopoietic stem cell transplantation. The generation of new T lymphocytes deriving from transplanted hematopoietic stem cells requires several months, a period associated with an increased risk of opportunistic infections and relapses. Recently, the early steps of human lymphopoiesis and the nature of the thymus-seeding progenitors were described. Moreover several scientific groups succeeded to generate T-cell precursors from murine and human hematopoietic stem cells in vitro by transitory exposition to Notch-ligands. Here we summarize and discuss these results and their possible usage in the development of new cell therapies to shorten the immunodeficient period following hematopoietic stem cell transplantation.