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Homo sapiens

ABSTRACT: RECURRENT SETBP1 MUTATIONS IN ATYPICAL CHRONIC MYELOID LEUKEMIA

PROVIDER: PRJNA179284 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR616065_1.fastq.gz	Fastqsanger.gz
	SRR616065_2.fastq.gz	Fastqsanger.gz
	SRR616066_1.fastq.gz	Fastqsanger.gz
	SRR616066_2.fastq.gz	Fastqsanger.gz
	SRR616067_1.fastq.gz	Fastqsanger.gz

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RECURRENT SETBP1 MUTATIONS IN ATYPICAL CHRONIC MYELOID LEUKEMIA

Project description:RNA-Seq analysis of atypical chronic myeloid leukemia samples We sequenced leukemic mRNA from 13 Atypical Cronic Mieloid Leukemia (aCML) samples by Illumina GAIIx. Transcriptomic profiles, differentially expressed genes and pathway enrichment analysis were obtained comparing 7 SETBP1-mutated samples and 6 non-mutated (WT) samples by using TopHat aligner and SAMMate gene expression quantifier. We focused on the gene expression profile of known coding transcripts. A dataset of 20,907 protein-coding Ensembl Genes was obtained from the RNA-Seq by using the Human Ensembl GTF annotation file vs54 dowloaded from ftp://ftp.ensembl.org/pub/release-54/gtf/homo_sapiens/.

2012-12-07 | E-GEOD-42146 | biostudies-arrayexpress

Mutant SETBP1 enhances NRAS-driven MAPK pathway activation to promote aggressive leukemia

Project description:Mutations in SET binding protein 1 (SETBP1) are associated with poor outcomes in myeloid leukemias. In the Ras-driven leukemia, juvenile myelomonocytic leukemia, SETBP1 mutations are enriched in relapsed disease. We demonstrate that SETBP1 enhances the NRAS gene expression signature, driving upregulation of mitogen-activated protein kinase (MAPK) signaling and downregulation of differentiation pathways.

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Mutant-SETBP1 activates transcription of Myc programs to accelerate CSF3R-driven myeloproliferative neoplasms

Project description:Colony stimulating factor 3 receptor (CSF3R) mutations lead to JAK pathway activation and are the molecular hallmark of chronic neutrophilic leukemia (CNL). Approximately half of CNL patients also have mutations in SET binding protein 1 (SETBP1). In this study, we developed models of SETBP1-mutant leukemia to understand the role that SETBP1 plays in CNL. SETBP1 mutations promote self-renewal of CSF3R-mutant hematopoietic progenitors in vitro and prevent cells from undergoing terminal differentiation. In vivo, SETBP1 mutations accelerate leukemia progression, leading to the rapid development of hepatosplenomegaly and granulocytosis. Through transcriptomic and epigenomic profiling, we found that SETBP1 enhances progenitor-associated programs—most strongly upregulating Myc and Myc target genes. In summary, we find that SETBP1 mutations promote aggressive hematopoietic cell expansion when expressed with mutant CSF3R through the upregulation of Myc-associated gene expression programs.

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