Totipotent hematopoietic stem cells: normal self-renewal and differentiation after transplantation between mouse fetuses
| Autor: | Fleischman Ra, Beatrice Mintz, Custer Rp |
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| Rok vydání: | 1982 |
| Předmět: |
Cell type
Myeloid T-Lymphocytes Biology General Biochemistry Genetics and Molecular Biology Mice Fetus medicine Animals Erythropoiesis B-Lymphocytes Hematopoietic Tissue Totipotent Hematopoietic Stem Cell Transplantation Hematopoietic stem cell Anemia Cell Differentiation Hematopoietic Stem Cells Cell biology Hematopoiesis Liver Transplantation Transplantation Haematopoiesis medicine.anatomical_structure Liver Immunology Stem cell Granulocytes |
| Zdroj: | Cell. 30(2) |
| ISSN: | 0092-8674 |
| Popis: | Successful engraftment of mouse fetal liver cells in early fetal recipients, after microinjection via the placental circulation, is attributable to seeding of the recipient's liver by a cell type that is ancestral to both the myeloid and lymphoid definitive lineages and is capable of sustained self-renewal and differentiation for more than 2 years. This primitive cell is therefore the normal totipotent hematopoietic stem cell (THSC). The use of a large series of mutant anemic recipients with decreasing severity of an endogenous stem-cell defect (WW, WvWv, WtWt, W v /+ ), and therefore of graded selective advantage to normal donor cells, has revealed that engraftment entails marginal numbers of cells—probably individual ones—in the least afflicted hosts. Thus the observed progressive and coordinate shift toward donor-strain erythrocytes, granulocytes and B and T lymphocytes, over time, indicates THSC expansion to form a larger stem-cell pool and normally regulated differentiation of cells from the pool. This transplant system allows allogeneic combinations with impunity and therefore provides many novel experimental possibilities for investigating THSC normal development, genetic abnormalities or neoplastic potential in relation to the intact developmental succession of hematopoietic tissue environments in vivo. |
| Databáze: | OpenAIRE |
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