UXT is a novel regulatory factor of regulatory T cells associated with Foxp3.

Abstract:

:Regulatory T (Treg) cells are a constitutively immunosuppressive subtype of T cells that contribute to the maintenance of immunological self-tolerance and immune homeostasis. However, the molecular mechanisms involved in the regulation of Treg cells remain unclear. In the present study, we identified ubiquitously expressed transcript (UXT) to be a novel regulator of human Treg-cell function. In cultured human Treg cells, UXT associates with Foxp3 in the nucleus by interacting with the proline-rich domain in the N-terminus of Foxp3. Knockdown of UXT expression in Treg cells results in a less-suppressive phenotype, demonstrating that UXT is an important regulator of the suppressive actions of Treg cells. Depletion of UXT affects the localization stability of Foxp3 protein in the nucleus and downregulates the expression of Foxp3-related genes. Overall, our results show that UXT is a cofactor of Foxp3 and an important player in Treg-cell function.

journal_name

Eur J Immunol

authors

Li W,Wang L,Jiang C,Li H,Zhang K,Xu Y,Hao Q,Li M,Xue X,Qin X,Zhang C,Wang H,Zhang W,Zhang Y

doi

10.1002/eji.201343394

subject

Has Abstract

pub_date

2014-02-01 00:00:00

pages

533-44

issue

2

eissn

0014-2980

issn

1521-4141

journal_volume

44

pub_type

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