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Transcription factor Foxp1 exerts essential cell-intrinsic regulation of the quiescence of naive T cells

Open access
Feng, Xiaoming, Wang, Haikun, Takata, Hiroshi, Day, Timothy J, Willen, Jessica, Hu, Hui·2011·Nature Immunology

Abstract

The molecular mechanisms that underlie T cell quiescence are poorly understood. Here we report that mature naive CD8+ T cells lacking the transcription factor Foxp1 gained effector phenotype and function and proliferated directly in response to interleukin 7 (IL-7) in vitro. Foxp1 repressed expression of the IL-7 receptor α-chain (IL-7Rα) by antagonizing Foxo1 and negatively regulated signaling by the kinases MEK and Erk. Acute deletion of Foxp1 induced naive T cells to gain an effector phenotype and proliferate in lympho-replete mice. Foxp1-deficient naive CD8+ T cells proliferated even in lymphopenic mice deficient in major histocompatibility complex class I. Our results demonstrate that Foxp1 exerts essential cell-intrinsic regulation of naive T cell quiescence, providing direct evidence that lymphocyte quiescence is achieved through actively maintained mechanisms that include transcriptional regulation.

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Metadata

Authors
Feng, X., Wang, H., Takata, H., Day, T. J., Willen, J., & Hu, H.
Venue
Nature Immunology
Published
2011-05-01
Volume
12
Issue
6
Pages
544-550
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W2036922744
Cited by
191
References
2
FWCI
5.15
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Transcription factor Foxp1 exerts essential cell-intrinsic regulation of the quiescence of naive T cells. https://app.cochat.ai/papers/10.1038/ni.2034
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Feng, X., Wang, H., Takata, H., Day, T. J., Willen, J., & Hu, H. (2011). Transcription factor Foxp1 exerts essential cell-intrinsic regulation of the quiescence of naive T cells. Nature Immunology. https://doi.org/10.1038/ni.2034

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