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An Essential Role of the Forkhead-Box Transcription Factor Foxo1 in Control of T Cell Homeostasis and Tolerance

Open access
Ouyang, Weiming, Beckett, Omar, Flavell, Richard A., Li, Ming O.·2009·Immunity

Abstract

Summary Members of the Forkhead box O (Foxo) family of transcription factors are key regulators of cellular responses, but their function in the immune system remains incompletely understood. Here we show that T cell-specific deletion of Foxo1 gene in mice led to spontaneous T cell activation, effector T cell differentiation, autoantibody production, and the induction of inflammatory bowel disease in a transfer model. In addition, Foxo1 was critical for the maintenance of naïve T cells in the peripheral lymphoid organs. Transcriptome analyses of T cells identified Foxo1-regulated genes encoding, among others, cell surface molecules, signaling proteins, and nuclear factors that control gene expression. Functional studies validated interleukin 7 receptor-α as a Foxo1 target gene essential for Foxo1 maintenance of naïve T cells. These findings reveal crucial functions of Foxo1-dependent transcription in control of T cell homeostasis and tolerance.

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Crossref · 10.1016/j.immuni.2009.02.003

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Metadata

Authors
Ouyang, W., Beckett, O., Flavell, R. A., & Li, M. O.
Venue
Immunity
Publisher
Elsevier BV
Published
2009-03
Volume
30
Issue
3
Pages
358-371
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2083554435
Cited by
306
References
57
FWCI
10.56
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: An Essential Role of the Forkhead-Box Transcription Factor Foxo1 in Control of T Cell Homeostasis and Tolerance. https://app.cochat.ai/papers/10.1016/j.immuni.2009.02.003
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Ouyang, W., Beckett, O., Flavell, R. A., & Li, M. O. (2009). An Essential Role of the Forkhead-Box Transcription Factor Foxo1 in Control of T Cell Homeostasis and Tolerance. Immunity. https://doi.org/10.1016/j.immuni.2009.02.003

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