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Acute myeloid leukemia cells resist chemotherapy through a transient senescence-like state [RNA-seq]

ABSTRACT: Acute myeloid leukemia cells resist chemotherapy through a transient senescence-like state [RNA-seq]

PROVIDER: PRJNA605820 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11058686.fastq.gz	Fastqsanger.gz
	SRR11058687.fastq.gz	Fastqsanger.gz
	SRR11058688.fastq.gz	Fastqsanger.gz
	SRR11058689.fastq.gz	Fastqsanger.gz
	SRR11058690.fastq.gz	Fastqsanger.gz

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Acute myeloid leukemia cells resist chemotherapy through a transient senescence-like state

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Project description:In acute myeloid leukemias (AML), chemotherapy is frequently followed by disease relapse, yet the mechanism by which AML reemerges is not fully understood. We hypothesized that chemotherapy induces senescence-like dormancy that facilitates survival to genotoxic exposure, allowing AML cells to endure treatment in a transiently dormant state while retaining potential for leukemic repopulation. Here, we show that primary AML cells exhibit hallmark senescence features following treatment with cytarabine (AraC), including growth arrest, increased cellular granularity, senescence-associated-β-galactosidase (SA-β-gal) activity, and senescence-associated transcriptomic alterations. Induction of AraC-induced premature senescence was regulated by the ATR kinase activity and mediated stress-survival. High-throughput single cell RNA (scRNA)-seq analysis of primary AML cells ex vivo and in vivo following chemotherapy suggest active transcriptional programming towards senescent-like dormancy instead of enrichment for leukemia stem cells (LSCs). scRNA-seq of sorted AraC-induced premature senescent AML cells demonstrated a heterogenous population including a fraction of cells with simultaneous expression of dormancy- and senescence-associated gene signatures. Xenotransplantation of AraC-induced premature senescent AML cells into mice demonstrated that senescent-like AML cells maintain leukemia-repopulating potential. Altogether, we propose a mechanism of AML relapse whereby AML cells tolerate chemotherapy via acquisition of a transient senescent-like state.

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Project description:Acute myeloid leukemia cells resist chemotherapy through a transient senescence-like state [scRNA-seq]

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Acute myeloid leukemia cells resist chemotherapy through a transient senescence-like state

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

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Study of dynamic transcriptome profiling in DNA damage-induced cellular senescence and transient cell-cycle arrest

Project description:For studing dynamic transcriptome profiling in DNA damage-induced cellular senescence and transient cell-cycle arrest, samples were treated with the DNA-damaging agent bleomycin at 0 ug/ml, 2 ug/ml and 40 ug/ml for 2 h. High-resolution time course analysis of gene expression in DNA damage-induced cellular senescence and transient cell-cycle arrest was used to explore the transcriptomic differences between different cell fates after DNA damage response.

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