2024-03-29T12:32:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/873652019-03-19T12:54:57Zcom_10261_41com_10261_1col_10261_294
Spatial (Tbata) expression in mature medullary thymic epithelial cells
Saade, Murielle
Nguyen, Catherine
The Spatial gene is expressed in highly polarized cell types such as testis germ cells, brain neurons and thymic epithelial cells (TEC). Its expression was documented in testis and brain but poorly characterized in thymus. Here, we characterize for the first time Spatial-expressing TEC throughout ontogeny and adult mouse thymus. Spatial is expressed in thymic-fated domain by embryonic day E10.5 and persists in subcapsular, cortical, medullary epithelial cells and in MTS24+ progenitor TEC. Using mouse strains in which thymocyte development is blocked at various stages, we show that Spatial expression is independent of thymocyte-derived signals during thymus organogenesis. Analyses on purified thymic cell subsets show that Spatial short isoforms are expressed in cortical TEC (cTEC) and mature medullary TEC (mTEC). Spatial long isoforms were detected in the same TEC population. Spatial presents a nuclear distribution specific to mature mTEC expressing UEA1 and Aire. Aire- and RANKL-deficientmice revealed that Spatial expression is drastically reduced in the thymus of these mutants. These findings reveal a critical function of Aire in regulating Spatial expression, which is compatible with promiscuous Spatial gene expression. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.
Funded by: Institut National de la Santé et de la Recherche Médicale (INSERM).
Peer Reviewed
2013-11-22T12:43:24Z
2013-11-22T12:43:24Z
2010
2013-11-22T12:43:24Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1002/eji.200939605
issn: 0014-2980
e-issn: 1521-4141
European Journal of Immunology 40(2): 530-538 (2010)
http://hdl.handle.net/10261/87365
10.1002/eji.200939605
en
none
Wiley-VCH