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Gallus gallus

ABSTRACT: Genome-wide analysis of FOXO1 binding features in early stage of chicken myoblast differentiation

PROVIDER: PRJNA319207 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3407541_1.fastq.gz	Fastqsanger.gz
	SRR3407541_2.fastq.gz	Fastqsanger.gz
	SRR3407542_1.fastq.gz	Fastqsanger.gz
	SRR3407542_2.fastq.gz	Fastqsanger.gz

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Genome-wide analysis of FOXO1 binding features in early stage of chicken myoblast differentiation

Project description:Chromatin immunoprecipitation and high-throughput sequencing (ChIP-Seq) were performed for FOXO1 in early differentiated myoblasts. Based on FOXO1-occupied features, 234 coding genes were annotated including 39 targets overlapped with mouse ChIP-seq data. Function analysis demonstrated that these targets were enriched in myogenic proliferation, death and hypotrophy. Moreover, FOXO1 manipulated myoblast proliferation through promoting TGFBR2 and MYCN and repressing G0S2 at transcriptional level. On the other side, FOXO1 negatively regulated Bcl6 expression in myoblast, indicating that in the early stage of differentiation, myoblast apoptosis induced by miR-16 might be coordinated by impacts of FOXO1 on Bcl6.

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Novel Foxo1-dependent Transcriptional Programs Control Treg Cell Function [ChIP-Seq]

Project description:Regulatory T (Treg) cells characterized by expression of the transcription factor forkhead box P3 (Foxp3) maintain immune homeostasis by suppressing self-destructive immune responses1-4. Foxp3 operates as a late acting differentiation factor controlling Treg cell homeostasis and function5, whereas the early Treg cell lineage commitment is regulated by the Akt kinase and the forkhead box O (Foxo) family of transcription factors6-10. However, whether Foxo proteins act beyond the Treg cell commitment stage to control Treg cell homeostasis and function remains largely unexplored. Here we show that Foxo1 is a pivotal regulator of Treg cell function. Treg cells express high amounts of Foxo1, and display reduced T-cell receptor-induced Akt activation, Foxo1 phosphorylation, and Foxo1 nuclear exclusion. Mice with Treg cell-specific deletion of Foxo1 develop a fatal inflammatory disorder similar in severity to Foxp3-deficient mice, but without the loss of Treg cells. Genome-wide analysis of Foxo1 binding sites reveals ~300 Foxo1-bound target genes, including the proinflammatory cytokine Ifng, that do not appear to be directly regulated by Foxp3. These findings demonstrate that the evolutionarily ancient Akt-Foxo1 signaling module controls a novel genetic program indispensable for Treg cell function. Treg cells were isolated from wild-type B6 mice or Foxo1tagBirA mice in which foxo1 is endogenously biotinylated. Foxo1 binding targets in Treg cells were identified by using Foxo1 antibody- and Streptavidin- ChIP-Seq approaches.

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Project description:RNA-seq in control group versus lncRNA MYH1G-AS knockdown chicken primary myoblast

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Project description:Genome-wide analysis of FoxO1 and Pax5 binding in pre-B cells following attenuation of IL-7 signaling. Transcription factor FoxO1 has been shown to be an essential factor for Ig light chain rearrangement. Results demonstrate that FoxO1 and Pax5 co-target genes that are activated during pre-B cell differentiation. Examination of FoxO1 and/or Pax5 binding under withdrawal of IL-7R signaling.

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Project description:Regulatory T (Treg) cells characterized by expression of the transcription factor forkhead box P3 (Foxp3) maintain immune homeostasis by suppressing self-destructive immune responses1-4. Foxp3 operates as a late acting differentiation factor controlling Treg cell homeostasis and function5, whereas the early Treg cell lineage commitment is regulated by the Akt kinase and the forkhead box O (Foxo) family of transcription factors6-10. However, whether Foxo proteins act beyond the Treg cell commitment stage to control Treg cell homeostasis and function remains largely unexplored. Here we show that Foxo1 is a pivotal regulator of Treg cell function. Treg cells express high amounts of Foxo1, and display reduced T-cell receptor-induced Akt activation, Foxo1 phosphorylation, and Foxo1 nuclear exclusion. Mice with Treg cell-specific deletion of Foxo1 develop a fatal inflammatory disorder similar in severity to Foxp3-deficient mice, but without the loss of Treg cells. Genome-wide analysis of Foxo1 binding sites reveals ~300 Foxo1-bound target genes, including the proinflammatory cytokine Ifng, that do not appear to be directly regulated by Foxp3. These findings demonstrate that the evolutionarily ancient Akt-Foxo1 signaling module controls a novel genetic program indispensable for Treg cell function. Regulatory T cells were FACS sorted in WT mice (2 reps), Foxo1 KO mice (2 reps), mice expressing a constitutively active form of Foxo1 (1 rep), and Foxo1 KO mice expressing constitutively active Foxo1. We identified genes differentially expressed in WT vs. KO mice and assessed whether expression was recovered in the KO in presence of constitutively active Foxo1

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