Gene interactions and pathways from curated databases and text-mining
Immunity 2012, PMID: 22425248

Transcription factor Foxo1 represses T-bet-mediated effector functions and promotes memory CD8(+) T cell differentiation.

Rao, Rajesh R; Li, Qingsheng; Gubbels Bupp, Melanie R; Shrikant, Protul A

The evolutionary conserved Foxo transcription factors are important regulators of quiescence and longevity. Although, Foxo1 is known to be important in regulating CD8(+) T cell trafficking and homeostasis, its role in functional differentiation of antigen-stimulated CD8(+) T cells is unclear. Herein, we demonstrate that inactivation of Foxo1 was essential for instructing T-bet transcription factor-mediated effector differentiation of CD8(+) T cells. The Foxo1 inactivation was dependent on mTORC1 kinase, given that blockade of mTORC1 abrogated mTORC2-mediated Akt (Ser473) kinase phosphorylation, resulting in Foxo1-dependent switch from T-bet to Eomesodermin transcription factor activation and increase in memory precursors. Silencing Foxo1 ablated interleukin-12- and rapamycin-enhanced CD8(+) T cell memory responses and restored T-bet-mediated effector functions. These results demonstrate an essential role of Foxo1 in actively repressing effector or terminal differentiation processes to promote memory CD8(+) T cell development and identify the functionally diverse mechanisms utilized by Foxo1 to promote quiescence and longevity.

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Text Mining Data

mTORC1 → mTORC2: " The Foxo1 inactivation was dependent on mTORC1 kinase, given that blockade of mTORC1 abrogated mTORC2 mediated Akt ( Ser473 ) kinase phosphorylation, resulting in Foxo1 dependent switch from T-bet to Eomesodermin transcription factor activation and increase in memory precursors "

Foxo1 → mTORC2: " The Foxo1 inactivation was dependent on mTORC1 kinase, given that blockade of mTORC1 abrogated mTORC2 mediated Akt ( Ser473 ) kinase phosphorylation, resulting in Foxo1 dependent switch from T-bet to Eomesodermin transcription factor activation and increase in memory precursors "

Manually curated Databases

No curated data.