Please use this identifier to cite or link to this item: https://doi.org/10.1084/jem.20120846
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dc.titleThymus-autonomous T cell development in the absence of progenitor import
dc.contributor.authorMartins, V.C.
dc.contributor.authorRuggiero, E.
dc.contributor.authorSchlenner, S.M.
dc.contributor.authorMadan, V.
dc.contributor.authorSchmidt, M.
dc.contributor.authorFink, P.J.
dc.contributor.authorvon Kalle, C.
dc.contributor.authorRodewald, H.-R.
dc.date.accessioned2016-09-01T07:17:15Z
dc.date.available2016-09-01T07:17:15Z
dc.date.issued2012-07
dc.identifier.citationMartins, V.C., Ruggiero, E., Schlenner, S.M., Madan, V., Schmidt, M., Fink, P.J., von Kalle, C., Rodewald, H.-R. (2012-07). Thymus-autonomous T cell development in the absence of progenitor import. Journal of Experimental Medicine 209 (8) : 1409-1417. ScholarBank@NUS Repository. https://doi.org/10.1084/jem.20120846
dc.identifier.issn00221007
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/126293
dc.description.abstractThymus function is thought to depend on a steady supply of T cell progenitors from the bone marrow. The notion that the thymus lacks progenitors with self-renewal capacity is based on thymus transplantation experiments in which host-derived thymocytes replaced thymus-resident cells within 4 wk. Thymus grafting into T cell-deficient mice resulted in a wave of T cell export from the thymus, followed by colonization of the thymus by host-derived progenitors, and cessation of T cell development. Compound Rag2-/- γc -/-KitW/Wv mutants lack competitive hematopoietic stem cells (HSCs) and are devoid of T cell progenitors. In this study, using this strain as recipients for wild-type thymus grafts, we noticed thymus-autonomous T cell development lasting several months. However, we found no evidence for export of donor HSCs from thymus to bone marrow. A diverse T cell antigen recep- tor repertoire in progenitor-deprived thymus grafts implied that many thymocytes were capable of self-renewal. Although the process was most efficient in Rag2-/- γc -/-KitW/Wv hosts, γc-mediated signals alone played a key role in the competition between thymus-resident and bone marrow-derived progenitors. Hence, the turnover of each generation of thymocytes is not only based on short life span but is also driven via expulsion of resident thymocytes by fresh progenitors entering the thymus. © 2012 Martins et al.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1084/jem.20120846
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCANCER SCIENCE INSTITUTE OF SINGAPORE
dc.description.doi10.1084/jem.20120846
dc.description.sourcetitleJournal of Experimental Medicine
dc.description.volume209
dc.description.issue8
dc.description.page1409-1417
dc.description.codenJEMEA
dc.identifier.isiut000307016500004
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