Overexpression of murine TSLP impairs lymphopoiesis and myelopoiesis
| Autor: | Kim Sue R S Tudor, Mark J. Osborn, Frank Mortari, Nicole Kirchhof, Angela Panoskaltsis-Mortari, Patricia L. Ryan |
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| Rok vydání: | 2004 |
| Předmět: |
Thymic stromal lymphopoietin
Myeloid Stromal cell T-Lymphocytes Lymphocyte Transgene Immunology Gene Expression Mice Transgenic Biology Biochemistry Cell Line Colony-Forming Units Assay Mice Thymic Stromal Lymphopoietin medicine Animals Humans Lymphopoiesis Myelopoiesis B-Lymphocytes Hyperplasia Cell Biology Hematology Hematopoietic Stem Cells Haematopoiesis medicine.anatomical_structure Cancer research Cytokines Spleen |
| Zdroj: | Blood. 103:843-851 |
| ISSN: | 1528-0020 0006-4971 |
| Popis: | The role of thymic stromal cell–derived lymphopoietin (TSLP) in regulating hematopoiesis is poorly characterized, so we investigated its regulatory effects in vivo using TSLP transgenic mice. Overexpression of TSLP disrupted hematopoietic homeostasis by causing imbalances in lymphopoiesis and myelopoiesis. Mice harboring a TSLP transgene had 5- to 700-fold fewer B and T precursors and no detectable pre-B lymphocyte colonyforming activity in the marrow or spleen. Conversely, TSLP transgenic mice possessed 15 to 20 times more splenic myeloid precursors than their littermates, and progenitor activity of the granulocyteerythrocyte-macrophage-megakaryocyte colony-forming units was significantly elevated. The arrest in lymphopoiesis and the expansion of myeloid progenitor cells in TSLP transgenic mice suggest that TSLP has negative and positive regulatory effects on lymphoid and myeloid development, respectively. |
| Databáze: | OpenAIRE |
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