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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [RUNX2 ChIP-seq]

ABSTRACT: RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [RUNX2 ChIP-seq]

PROVIDER: PRJNA637334 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11926742.fastq.gz	Fastqsanger.gz
	SRR11926743.fastq.gz	Fastqsanger.gz
	SRR11926744.fastq.gz	Fastqsanger.gz
	SRR11926745.fastq.gz	Fastqsanger.gz
	SRR11926746.fastq.gz	Fastqsanger.gz

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KMT2A-MLLT1_ Runx2 ko RNA-seq]

Project description:T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic malignancy with a high incidence of relapse. Here we show that Runt-related transcription factor 2, RUNX2 is upregulated in high-risk T-ALL with KMT2A rearrangements (KMT2A-R) or immature phenotype. In KMT2A-R cells, we identified RUNX2 as a direct target of the KMT2A chimeras, while it reciprocally binds the KMT2A promoter, establishing a regulatory feed-forward mechanism. Notably, RUNX2 is required for survival in immature and KMT2A-R T-ALL in vitro and in vivo. We report a direct transcriptional regulation of CXCR4 signaling by RUNX2, which thereby promotes cell migration and adhesion. Functionally, RUNX2 impacts T-ALL cell homing and exacerbates T-ALL progression to medullary and extramedullary sites. We demonstrate that RUNX2 enables these energy-demanding processes by increasing metabolic activity in T-ALL cells through positive regulation of both glycolysis and oxidative phosphorylation. Concurrently, RUNX2 upregulation results in increased mitochondrial dynamics and biogenesis in T-ALL cells. As a proof of concept, immature and KMT2A-R T-ALL cells are vulnerable to pharmacological targeting of the interaction of RUNX2 with its co-factor CBFβ. In conclusion, we identify RUNX2 a dependency factor in immature and KMT2A-R T-ALL that regulates cell metabolism and disease progression

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [RUNX2 ChIP-seq]

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 RUNX2 shRNA knockdown RNA-seq]

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 AI-10-104 RNA-seq]

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KMT2A-MLLT1_ Runx2 ko RNA-seq]

Project description:RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KMT2A-MLLT1_ Runx2 ko RNA-seq]

| PRJNA637337 | ENA

RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia

Project description:RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 RUNX2 shRNA knockdown RNA-seq]

Project description:RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 RUNX2 shRNA knockdown RNA-seq]

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RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 AI-10-104 RNA-seq]

Project description:RUNX2 is a dependency factor in immature and KMT2A-rearranged T-cell acute lymphoblastic leukemia [KARPAS-45 AI-10-104 RNA-seq]

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Modelling acquired resistance to DOT1L inhibition exhibits the adaptive potential of KMT2A-rearranged Acute Lymphoblastic Leukemia’ [RNA-seq]

Project description:KMT2A-rearranged acute lymphoblastic leukemia (ALL) is an aggressive type of leukemia which represents the most common form diagnosed in infancy. Oncogenic KMT2A-fusion proteins recruit histone methyltransferase DOT1L which leads to misplaced H3K79 methylation inducing an abnormal transcriptomic landscape that favors leukemia development. Hence, inhibition of DOT1L represents an attractive therapeutic strategy. Unfortunately, the first-in-class DOT1L inhibitor pinometostat resulted in the development of resistance. To understand this resistance we established acquired resistance to DOT1L inhibition in a pediatric KMT2A::AFF1+ B-ALL cell line model that stably became ~35-fold more resistant to pinometostat. Interestingly, while becoming almost completely independent of DOT1L-mediated H3K79 methylation, these cells remained fully dependent on the physical presence of DOT1L, HOXA9, as well as the KMT2A::AFF1 fusion protein. Further characterization of these cells using RNA-, ChIP-, and ATAC-sequencing analyses revealed that acquired resistance to DOT1L inhibition leads to a selective loss of KMT2A-fusion driven epigenetic regulation and expression of genes such as PROM1 (encoding the hematopoietic/leukemia stem cell marker CD133) and its enhancer TAPT1, as well as other putative KMT2A::AFF1 target genes such as RUNX2, PRSS12, ZC3H12, and GNAQ. In contrast, the levels of H3K79me2 and expression of other KMT2A::AFF1 target genes, including HOXA9, MEIS1, and CDK6 remained unaffected. Concomitantly, pinometostat-resistant KMT2A::AFF1+ B-ALL cells showed upregulation of genes associated with a myeloid immunophenotype, including CD33, LILRB4/CD85k, MPEG1, CCL5, and LIMK1. Taken together, we here present a valuable model to study the adaptive potential of KMT2A-rearranged ALL upon losing dependency on one of its main oncogenic properties.

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Modelling acquired resistance to DOT1L inhibition exhibits the adaptive potential of KMT2A-rearranged Acute Lymphoblastic Leukemia’ [ChIP-seq]

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