Abstract:
:Many body surfaces harbor organ-specific γδ T cell compartments that contribute to tissue integrity. Thus, murine dendritic epidermal T cells (DETCs) uniquely expressing T cell receptor (TCR)-Vγ5 chains protect from cutaneous carcinogens. The DETC repertoire is shaped by Skint1, a butyrophilin-like (Btnl) gene expressed specifically by thymic epithelial cells and suprabasal keratinocytes. However, the generality of this mechanism has remained opaque, since neither Skint1 nor DETCs are evolutionarily conserved. Here, Btnl1 expressed by murine enterocytes is shown to shape the local TCR-Vγ7(+) γδ compartment. Uninfluenced by microbial or food antigens, this activity evokes the developmental selection of TCRαβ(+) repertoires. Indeed, Btnl1 and Btnl6 jointly induce TCR-dependent responses specifically in intestinal Vγ7(+) cells. Likewise, human gut epithelial cells express BTNL3 and BTNL8 that jointly induce selective TCR-dependent responses of human colonic Vγ4(+) cells. Hence, a conserved mechanism emerges whereby epithelia use organ-specific BTNL/Btnl genes to shape local T cell compartments.
journal_name
Celljournal_title
Cellauthors
Di Marco Barros R,Roberts NA,Dart RJ,Vantourout P,Jandke A,Nussbaumer O,Deban L,Cipolat S,Hart R,Iannitto ML,Laing A,Spencer-Dene B,East P,Gibbons D,Irving PM,Pereira P,Steinhoff U,Hayday Adoi
10.1016/j.cell.2016.08.030subject
Has Abstractpub_date
2016-09-22 00:00:00pages
203-218.e17issue
1eissn
0092-8674issn
1097-4172pii
S0092-8674(16)31081-9journal_volume
167pub_type
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