| First Author | Maillard I | Year | 2006 |
| Journal | Blood | Volume | 107 |
| Issue | 9 | Pages | 3511-9 |
| PubMed ID | 16397133 | Mgi Jnum | J:132556 |
| Mgi Id | MGI:3776302 | Doi | 10.1182/blood-2005-08-3454 |
| Citation | Maillard I, et al. (2006) Notch-dependent T-lineage commitment occurs at extrathymic sites following bone marrow transplantation. Blood 107(9):3511-9 |
| abstractText | Early T-lineage progenitors (ETPs) arise after colonization of the thymus by multipotent bone marrow progenitors. ETPs likely serve as physiologic progenitors of T-cell development in adult mice, although alternative T-cell differentiation pathways may exist. While we were investigating mechanisms of T-cell reconstitution after bone marrow transplantation (BMT), we found that efficient donor-derived thymopoiesis occurred before the pool of ETPs had been replenished. Simultaneously, T lineage-restricted progenitors were generated at extrathymic sites, both in the spleen and in peripheral lymph nodes, but not in the bone marrow or liver. The generation of these T lineage-committed cells occurred through a Notch-dependent differentiation process. Multipotent bone marrow progenitors efficiently gave rise to extrathymic T lineage-committed cells, whereas common lymphoid progenitors did not. Our data show plasticity of T-lineage commitment sites in the post-BMT environment and indicate that Notch-driven extrathymic Tlineage commitment from multipotent progenitors may contribute to early T-lineage reconstitution after BMT. |
