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  1. 010 学術雑誌論文
  2. 田辺, 秀之 / TANABE, Hideyuki

Reciprocal Control of G1-Phase Progression Is Required for Th-POK/Runx3–Mediated CD4/8 Thymocyte Cell Fate Decision

https://ir.soken.ac.jp/records/3953
https://ir.soken.ac.jp/records/3953
cb314566-afe2-48bc-80cf-8a4de6752215
Item type 学術雑誌論文 / Journal Article(1)
公開日 2013-09-18
タイトル
タイトル Reciprocal Control of G1-Phase Progression Is Required for Th-POK/Runx3–Mediated CD4/8 Thymocyte Cell Fate Decision
タイトル
タイトル Reciprocal Control of G1-Phase Progression Is Required for Th-POK/Runx3–Mediated CD4/8 Thymocyte Cell Fate Decision
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 SATO, Takehito

× SATO, Takehito

SATO, Takehito

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TANABE, Hideyuki

× TANABE, Hideyuki

TANABE, Hideyuki

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et, al.

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et, al.

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著者別名 田辺, 秀之

× 田辺, 秀之

田辺, 秀之

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抄録
内容記述タイプ Abstract
内容記述 After receiving a TCR-mediated differentiation signal, CD4 and CD8 double-positive thymocytes diverge into CD4 or CD8 single-positive T cells, for which Th-POK and Runx3 have been identified as pivotal transcription factors, respectively. The cross-antagonistic regulation of Th-POK and Runx3 seems to be essential for CD4/8 thymocyte lineage commitment. However, the process for determining which pivotal factor acts dominantly has not been established. To explore the determining process, we used an in vitro culture system in which CD4 or CD8 single-positive cells are selectively induced from CD4/8 double-positive cells. Surprisingly, we found that control of G1 cell cycle phase progression is critical for the determination. In the CD4 pathway, sustained TCR signal, as well as Th-POK, induces G1-phase extension and represses CD8 expression in a G1 extension-dependent manner. In the CD8 pathway, after receiving a transient TCR signal, the IL-7R signal, as well as Runx3, antagonizes TCR signal-mediated G1 extension and CD8 repression. Importantly, forced G1 extension cancels the functions of Runx3 to repress Th-POK and CD4 and to reactivate CD8. In contrast, it is suggested that forced G1 progression inhibits Th-POK function to repress CD8. Collectively, Th-POK and Runx3 are reciprocally involved in the control of G1-phase progression, on which they exert their functions dependently. These findings may provide novel insight into how CD4/CD8 cell lineages are determined by Th-POK and Runx3.
書誌情報 Journal of Immunology
en : Journal of Immunology

巻 189, 号 9, p. 4426-4436, 発行日 2012-11-01
出版者
出版者 The American Association of Immunologists
ISSN
収録物識別子タイプ ISSN
収録物識別子 0022-1767
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.4049/jimmunol.1102748
関連名称 10.4049/jimmunol.1102748
権利
権利情報 © 2012 by The American Association of Immunologists, Inc
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