References
Query Results -- Details
MGI Accession ID: MGI:3580766
J Number: J:98951
Other Accession IDs:
Title: Recruitment of adult thymic progenitors is regulated by P-selectin and its ligand PSGL-1.
Authors: Rossi FM; Corbel SY; Merzaban JS; Carlow DA; Gossens K; Duenas J; So L; Yi L; Ziltener HJ
Journal: Nat Immunol
Volume: 6
Issue: 6
Date: 2005 Jun
Year: 2005
Pages: 626-34
Review Status: Peer Reviewed
Abstract:
The molecular mechanisms that direct the migration of early T lymphocyte progenitors to the thymus are unknown. We show here that P-selectin is expressed by thymic endothelium and that lymphoid progenitors in bone marrow and thymus bind P-selectin. Parabiosis, competitive thymus reconstitution and short-term homing assays indicated that P-selectin and its ligand PSGL-1 are functionally important components of the thymic homing process. Accordingly, thymi of mice lacking PSGL-1 contained fewer early thymic progenitors and had increased empty niches for prothymocytes compared with wild-type mice. Furthermore, the number of resident thymic progenitors controls thymic expression of P-selectin, suggesting that regulation of P-selectin expression by a thymic 'niche occupancy sensor' may be used to direct progenitor access.
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