| First Author | Shi Y | Year | 2016 |
| Journal | Nat Commun | Volume | 7 |
| Pages | 12369 | PubMed ID | 27493002 |
| Mgi Jnum | J:241268 | Mgi Id | MGI:5898214 |
| Doi | 10.1038/ncomms12369 | Citation | Shi Y, et al. (2016) LTbetaR controls thymic portal endothelial cells for haematopoietic progenitor cell homing and T-cell regeneration. Nat Commun 7:12369 |
| abstractText | Continuous thymic homing of haematopoietic progenitor cells (HPCs) via the blood is critical for normal T-cell development. However, the nature and the differentiation programme of specialized thymic endothelial cells (ECs) controlling this process remain poorly understood. Here using conditional gene-deficient mice, we find that lymphotoxin beta receptor (LTbetaR) directly controls thymic ECs to guide HPC homing. Interestingly, T-cell deficiency or conditional ablation of T-cell-engaged LTbetaR signalling results in a defect in thymic HPC homing, suggesting the feedback regulation of thymic progenitor homing by thymic products. Furthermore, we identify and characterize a special thymic portal EC population with features that guide HPC homing. LTbetaR is essential for the differentiation and homeostasis of these thymic portal ECs. Finally, we show that LTbetaR is required for T-cell regeneration on irradiation-induced thymic injury. Together, these results uncover a cellular and molecular pathway that governs thymic EC differentiation for HPC homing. |
