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Review
. 2020 Apr;20(4):239-253.
doi: 10.1038/s41577-019-0238-0. Epub 2019 Dec 5.

Thymic epithelial cell heterogeneity: TEC by TEC

Noam Kadouri  1 , Shir Nevo  1 , Yael Goldfarb  1 , Jakub Abramson  2
Affiliations
Review

Thymic epithelial cell heterogeneity: TEC by TEC

Noam Kadouri et al. Nat Rev Immunol. 2020 Apr.

Abstract

The generation of a functional T cell repertoire in the thymus is mainly orchestrated by thymic epithelial cells (TECs), which provide developing T cells with cues for their navigation, proliferation, differentiation and survival. The TEC compartment has been segregated historically into two major populations of medullary TECs and cortical TECs, which differ in their anatomical localization, molecular characteristics and functional roles. However, recent studies have shown that TECs are highly heterogeneous and comprise multiple subpopulations with distinct molecular and functional characteristics, including tuft cell-like or corneocyte-like phenotypes. Here, we review the most recent advances in our understanding of TEC heterogeneity from a molecular, functional and developmental perspective. In particular, we highlight the key insights that were recently provided by single-cell genomic technologies and in vivo fate mapping and discuss them in the context of previously published data.

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References

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