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Disruption to the FOXO-PRDM1 axis resulting from deletions of chromosome 6 in acute lymphoblastic leukaemia

ABSTRACT: Disruption to the FOXO-PRDM1 axis resulting from deletions of chromosome 6 in acute lymphoblastic leukaemia

PROVIDER: PRJNA795898 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17522440.fastq.gz	Fastqsanger.gz
	SRR17522441.fastq.gz	Fastqsanger.gz
	SRR17522442.fastq.gz	Fastqsanger.gz
	SRR17522443.fastq.gz	Fastqsanger.gz
	SRR17522444.fastq.gz	Fastqsanger.gz

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Disruption to the FOXO-PRDM1 axis resulting from deletions of chromosome 6 in acute lymphoblastic leukaemia.

Project description:A common problem in the study of human malignancy is the elucidation of cancer driver mechanisms associated with recurrent deletion of regions containing multiple genes. Taking B-cell acute lymphoblastic leukaemia (B-ALL) and large deletions of 6q [del(6q)] as a model, we integrated analysis of functional cDNA clone tracking assays with patient genomic and transcriptomic data, to identify the transcription factors FOXO3 and PRDM1 as candidate tumour suppressor genes (TSG). Analysis of cell cycle and transcriptomic changes following overexpression of FOXO3 or PRDM1 indicated that they co-operate to promote cell cycle exit at the pre-B cell stage. FOXO1 abnormalities are absent in B-ALL, but like FOXO3, FOXO1 expression suppressed growth of TCF3::PBX1 and ETV6::RUNX1 B-ALL in-vitro. While both FOXOs induced PRDM1 and other genes contributing to late pre-B cell development, FOXO1 alone induced the key transcription factor, IRF4, and chemokine, CXCR4. CRISPR-Cas9 screening identified FOXO3 as a TSG, while FOXO1 emerged as essential for B-ALL growth. We relate this FOXO3-specific leukaemia-protective role to suppression of glycolysis based on integrated analysis of CRISPR-data and gene sets induced or suppressed by FOXO1 and FOXO3. Pan-FOXO agonist Selinexor induced the glycolysis inhibitor TXNIP and suppressed B-ALL growth at low dose (ID50 < 50 nM).

| S-EPMC9991907 | biostudies-literature

Disruption to the FOXO-PRDM1 axis resulting from deletions of chromosome 6 in acute lymphoblastic leukaemia

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-10-01 | GSE193349 | GEO

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Foxo signaling declines with age

Project description:We performed RNA-seq for WT and foxo mutant flies, by combining with Dr. Baihua's foxo chip-seq data, we found 101 foxo-repressed and 300 foxo-activated genes. By analyzing expression change of these genes during age, we found foxo-repressed genes became activated, while foxo-activated genes became repressed, suggesting foxo signaling declines with age.

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The transcriptional repressor Blimp1/Prdm1 regulates post-natal reprogramming of intestinal enterocytes

Project description:Expression profiling of Prdm1 mutant E18.5 small intestine was performed using Illumina whole genome V2 arrays. The hypothesis tested in the present study was that Blimp1 regulates the transcription of key genes involved in enterocyte differentiation and survival. Results identify substantial and premature activation of key components of the adult enterocyte biochemical signature. Villin-Cre and Prdm1BEH/+ animals were intercrossed to generate heterozygous Villin-Cre, Prdm1BEH males that were then mated with homozygous Prdm1 CA/CA females carrying the R26R allele to generate Prdm1+/+ (Prdm1CA/+) or Prdm1-/- (Villin-Cre, Prdm1CA/BEH) offspring. Total RNA obtained from 11 Prdm1+/+ and 10 Prdm1-/- E18.5 small intestine samples was hybridized to Illumina WG6_V2 beadchips.

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Molecular function of Prdm1/Blimp1 in trophoblast giant cell differentiation.

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PRDM1 inhibits proliferation of human colon cancer organoids

Project description:We reports the transcript landscape of PR Domain Containing 1, with ZNF domain (PRDM1) in RKO colon cancer cells. We show that PRDM1 alpha and PRDM1 beta transcript isoforms repress and activate a largely overlapping suite of genes, many of which belong to the embryonic stem cell core transcript program.

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daf-16/FoxO isoform-specific deletion mutants

Project description:FoxO transcription factors promote longevity across taxa. How they do so is poorly understood. In the nematode Caenorhabditis elegans, the A- and F-isoforms of the FoxO transcription factor DAF-16 extend life span in the context of reduced DAF-2 insulin-like growth factor receptor (IGFR) signaling. To elucidate the mechanistic basis for DAF-16/FoxO-dependent life span extension, we performed an integrative analysis of isoform-specific daf-16/FoxO mutants. In contrast to previous studies suggesting that DAF-16F plays a more prominent role in life span control than DAF-16A, isoform-specific daf-16/FoxO mutant phenotypes and whole transcriptome profiling revealed a predominant role for DAF-16A over DAF-16F in life span control, stress resistance, and target gene regulation. Integration of these data sets enabled the prioritization of a subset of 92 DAF-16/FoxO target genes for functional interrogation. Among 29 genes tested, two DAF-16A-specific target genes significantly influenced longevity. Our discovery of new longevity genes underscores the efficacy of our integrative strategy while providing a general framework for identifying specific downstream gene regulatory events that contribute substantially to transcription factor functions. As FoxO transcription factors have conserved functions in promoting longevity and may be dysregulated in aging-related diseases, these findings promise to illuminate fundamental principles underlying aging in animals. Whole-transcriptome profiling of daf-16/FoxO isoform-specific deletion mutants in the long-lived daf-2(e1370) background. Included are daf-16 wild-type, daf-16 null mutation, daf-16a/f mutation, two independent daf-16a mutations, and daf-16f mutation. N2 wild-type controls are also included.

2015-08-27 | E-GEOD-72426 | biostudies-arrayexpress

FOXO in mouse brain

Project description:Gene expression in FOXO KO vs WT brain

2018-02-13 | GSE102137 | GEO

Single-cell RNA-seq transcriptome profiling of Prdm1+ lineages in E9.5 mouse placenta

Project description:Our goal was to transcriptionally profile Prdm1+ cell lineages of maternal and embryonic origin in mid-gestation mouse placenta in order to study vascular mimicry and additional processes in the placenta. Profiling of 61 single cells and 17 clusters of 2 or 3 cells chosen based on expression of Prdm1, a paternally inherited Prdm1-Venus fluorescent reporter, progenitor trophoblast marker Gjb3 and spiral artery trophoblast giant cell marker Prl7b1.

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