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Κυριακή 17 Δεκεμβρίου 2017

Reinterpreting recent thymic emigrant function: defective or adaptive?

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Publication date: April 2018
Source:Current Opinion in Immunology, Volume 51
Author(s): Cody A Cunningham, Eric Y Helm, Pamela J Fink
Recent thymic emigrants (RTEs) are those peripheral T cells that have most recently completed thymic development and egress. Over the past decade, significant advances have been made in understanding the cell-extrinsic and cell-intrinsic requirements for RTE maturation to mature naïve (MN) T cells and in detailing the functional differences that characterize these two T cell populations. Much of this work has suggested that RTEs are hypo-functional versions of more mature T cells. However, recent evidence has indicated that rather than being defective T cells, RTEs are exquisitely adapted to their cellular niche. In this review, we argue that RTEs are not flawed mature T cells but are adapted to fill an underpopulated T cell compartment, while maintaining self tolerance and possessing the capacity to mount robust immune responses.



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