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Hippo kinases Mst1 and Mst2 sense and amplify IL-2R−STAT5 signaling in Treg cells to establish stable regulatory activity

ABSTRACT: Hippo kinases Mst1 and Mst2 sense and amplify IL-2R−STAT5 signaling in Treg cells to establish stable regulatory activity

PROVIDER: PRJNA494226 | ENA |

REPOSITORIES: ENA

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Hippo kinases Mst1 and Mst2 sense and amplify IL-2R−STAT5 signaling in Treg cells to establish stable regulatory activity

Project description:Interleukin-2 (IL-2) and downstream transcription factor STAT5 are important for maintaining regulatory T (Treg) cell homeostasis and function. Tregs can respond to low levels of IL-2, but the mechanisms by which STAT5 is activated during partial IL-2 deficiency remain uncertain. We identified the serine-threonine kinase Mst1 as a signal-dependent amplifier of IL-2−STAT5 activity in Tregs. Tregs had high Mst1 and Mst2 (Mst1−Mst2) activity that was crucial to prevent tumor resistance and autoimmunity. Mechanistically, Mst1−Mst2 sensed IL-2 signals to promote the STAT5 activation necessary for Treg cell homeostasis and lineage stability, and maintain the highly suppressive phophorylated-STAT5+ Treg cell subpopulation. Unbiased quantitative proteomics revealed an association of Mst1 with the cytoskeletal DOCK8−LRCHs module that shaped activity Rho-family GTPase Rac activity, which in turn mediated STAT5 activation in Tregs. Collectively, IL-2−STAT5 signaling critically depends upon Mst1−Mst2 functions to maintain a stable Treg cell pool and immune tolerance. We used microarrays to compare the global transcription profiles of WT and Mst1/Mst2-null Treg cell populations

2018-11-08 | GSE120711 | GEO

Hippo Kinases Mst1 and Mst2 Sense and Amplify IL-2R-STAT5 Signaling in Regulatory T Cells to Establish Stable Regulatory Activity.

Project description:Interleukin-2 (IL-2) and downstream transcription factor STAT5 are important for maintaining regulatory T (Treg) cell homeostasis and function. Treg cells can respond to low IL-2 levels, but the mechanisms of STAT5 activation during partial IL-2 deficiency remain uncertain. We identified the serine-threonine kinase Mst1 as a signal-dependent amplifier of IL-2-STAT5 activity in Treg cells. High Mst1 and Mst2 (Mst1-Mst2) activity in Treg cells was crucial to prevent tumor resistance and autoimmunity. Mechanistically, Mst1-Mst2 sensed IL-2 signals to promote the STAT5 activation necessary for Treg cell homeostasis and lineage stability and to maintain the highly suppressive phosphorylated-STAT5+ Treg cell subpopulation. Unbiased quantitative proteomics revealed association of Mst1 with the cytoskeletal DOCK8-LRCHs module. Mst1 deficiency limited Treg cell migration and access to IL-2 and activity of the small GTPase Rac, which mediated downstream STAT5 activation. Collectively, IL-2-STAT5 signaling depends upon Mst1-Mst2 functions to maintain a stable Treg cell pool and immune tolerance.

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Microarray of Mst1/2 deleted epithelial cells from E18.5 mouse lungs

Project description:ShhCre;Mst1/2flx/flx (Mst1/2 D/D) mice were generated to conditionally delete Mst1 and Mst2 from epithelial progenitors during lung morphogenesis. Lungs from E18.5 control and Mst1/2 D/D mice were mechanically and enzymatically dissociated to generate single cell suspension. Epcam(+) cells were isolated using magnetic microbeads. Microarray analysis of mRNAs isolated from Epcam(+) epithelial cells from E18.5 control and Mst1/2 D/D mice was performed to identify transcriptional changes following deletion of the mammalian Hippo kinases (Mst1 and Mst2) from the embryonic lung. The mammalian Hippo kinases, Mst1 and Mst2, were conditionally deleted in epithelial progenitors of the developing lung using ShhCre. Epcam(+) epithelial cells were isolated from the lungs of E18.5 control and Mst1/2 deleted mice. mRNA isolated from Epcam(+) epithelial cells was analyzed by microarray.

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RNA-seq analysis of Mst1/2 deleted bronchiolar epithelial cells from adult mouse lungs

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RNA-seq analysis of Mst1/2 deleted bronchiolar epithelial cells from adult mouse lungs

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Expression data from Mst knockout embryoid bodies and wild type embryoid bodies

Project description:Mst1/Mst2 are central components of Hippo pathway. We examined the role of Mst1/Mst2 in ES cell differentiation. In this data set, we include expression data from day 4 and day 8 Mst1/Mst2 knockout ES cell formed embryoid bodies and wild type embryoid body controls. total 4 samples.

2014-01-02 | E-GEOD-50219 | biostudies-arrayexpress

Effect of inactivation of Mst1 and Mst2 in the mouse adrenal cortex

Project description:The Hippo Pathway has been found to play an important role in adrenal gland development and maintenance in mice. In this study, we further explored the role of the Hippo pathway in the adrenal gland using a transgenic mouse model where we knocked out the upstream kinases of the pathway, Mst1 and Mst2.

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Expression data from Mst knockout embryoid bodies and wild type embryoid bodies

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