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TP53-mediated therapy-related clonal hematopoiesis contributes to doxorubicin-induced cardiomyopathy by augmenting a neutrophil-mediated cytotoxic response in a murine model

ABSTRACT: TP53-mediated therapy-related clonal hematopoiesis contributes to doxorubicin-induced cardiomyopathy by augmenting a neutrophil-mediated cytotoxic response in a murine model

PROVIDER: PRJNA727317 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14420420_1.fastq.gz	Fastqsanger.gz
	SRR14420420_2.fastq.gz	Fastqsanger.gz
	SRR14420421_1.fastq.gz	Fastqsanger.gz
	SRR14420421_2.fastq.gz	Fastqsanger.gz
	SRR14420422_1.fastq.gz	Fastqsanger.gz

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TP53-mediated therapy-related clonal hematopoiesis contributes to doxorubicin-induced cardiomyopathy by augmenting a neutrophil-mediated cytotoxic response in a murine model

Project description:Therapy-related clonal hematopoiesis (t-CH) is often observed in cancer survivors. This form of clonal hematopoiesis typically involves somatic mutations in driver genes that encode components of the DNA damage response (DDR) and confer hematopoietic stem and progenitor cells (HSPC) with resistance to the genotoxic stress of the cancer therapy. A model of TP53-mediated t-CH was established through the transfer of Trp53-mutant HSPC to mice followed by treatment with a course of the chemotherapeutic agent doxorubicin. These studies revealed that neutrophil infiltration in the heart significantly contributes to doxorubicin-induced cardiac toxicity and that this condition is amplified in the model of Trp53-mediated t-CH. These data suggest t-CH could contribute to the elevated heart failure risk that occurs in cancer survivors.

2021-05-05 | GSE173840 | GEO

TP53-mediated therapy-related clonal hematopoiesis contributes to doxorubicin-induced cardiomyopathy by augmenting a neutrophil-mediated cytotoxic response.

Project description:Therapy-related clonal hematopoiesis (t-CH) is often observed in cancer survivors. This form of clonal hematopoiesis typically involves somatic mutations in driver genes that encode components of the DNA damage response and confer hematopoietic stem and progenitor cells (HSPCs) with resistance to the genotoxic stress of the cancer therapy. Here, we established a model of TP53-mediated t-CH through the transfer of Trp53 mutant HSPCs to mice, followed by treatment with a course of the chemotherapeutic agent doxorubicin. These studies revealed that neutrophil infiltration in the heart significantly contributes to doxorubicin-induced cardiac toxicity and that this condition is amplified in the model of Trp53-mediated t-CH. These data suggest that t-CH could contribute to the elevated heart failure risk that occurs in cancer survivors who have been treated with genotoxic agents.

| S-EPMC8410064 | biostudies-literature

ATACseq of FHSD iPSC control vs doxorubicin

Project description:FSHD iPSC and TP53 KO FSHD iPSC were treated with vehicle or doxorubicin and then harvested for ATACseq

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Transcription profiling of 5 human parental cell lines and 3 drug resistant variants by culturing the former continuously in the presence of cytotoxic drug doxorubicin

Project description:Title: Analysis of gene expression changes involved in the development of acquired drug resistance.<br> Description: In vitro model of drug resistance consisting of 5 parental cell lines and 3 drug resistant variants by culturing the former continuously in the presence of cytotoxic drug doxorubicin. Model used to identify genes involved in the drug resistant phenotype.

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Detoxifying doxorubicin

Project description:Detoxifying doxorubicin

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Secretory mucin 5AC promotes neoplastic progression by augmenting KLF4-mediated pancreatic cancer cell stemness

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SARS-CoV-2 spike sequence dictates host TP53 activity and COVID-19 pathogenicity

Project description:SARS-CoV-2 induces widespread transcriptomic changes in host cells upon infection, in part through activation and modulation of innate immunity pathways and downstream gene regulation. However, the mechanisms by which SARS-CoV-2 and its evolutionary variants differentially affect host cell transcriptomic states remain largely unclear. Through chromatin proteomic (iDAPT-MS) analysis, we found that although SARS-CoV-2 and other pathogenic coronaviruses exhibit similar proteomic shifts on chromatin, SARS-CoV-2 uniquely promotes TP53 nuclear accumulation and activation. Parallel assessment of SARS-CoV-2 viral protein expression on host chromatin states (ATAC-seq) identifies intracellular spike protein as a key determinant of virus-mediated chromatin accessibility changes. Multilevel chromatin profiling reveals increased TP53 nuclear accumulation, TP53-associated chromatin accessibility changes, and TP53 target gene activation upon expression of SARS-CoV-2 alpha (B.1.1.7) and delta (B.1.617.2) spike variants relative to the ancestral spike sequence. TP53, ACE2, and furin cleavage are required for these changes, driving decreased cellular proliferation, increased cellular senescence, and increased cytokine release. Finally, BA.1 but not BA.2, BA.2.12.1, nor BA.4/BA.5 spike expression leads to attenuated TP53 activity and fusogenicity relative to ancestral spike. Our findings implicate spike-mediated host TP53 activation as a “rheostat” of COVID-19 pathogenicity.

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2016-04-01 | E-GEOD-76940 | biostudies-arrayexpress

Detoxifying doxorubicin

Project description:The anthracycline doxorubicin is a highly effective anti-cancer drug associated with severe side effects, including secondary tumors and cardiotoxicity. Doxorubicin induces DNA damage through double-strand breaks (DSBs) and epigenetic or chromatin damage through histone eviction. We examined whether separation of these activities can help to detoxify doxorubicin, while maintaining its chemotherapeutic efficacy. We show that anthracycline variants harboring the histone eviction activity alone remain potent anti-cancer drugs, while greatly alleviating cardiotoxicity and secondary tumor formation. We thus demonstrate that treatment-limited side effects of doxorubicin can be synthesized away, yielding effective chemotherapeutics towards improved and prolonged treatment responses and higher patient quality of life.

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