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Cell-free, methylated DNA in blood samples reveals tissue-specific, cellular damage from radiation treatment

ABSTRACT: Cell-free, methylated DNA in blood samples reveals tissue-specific, cellular damage from radiation treatment

PROVIDER: PRJNA967809 | ENA |

REPOSITORIES: ENA

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Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment

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Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Human Serum MCC-seq]

Project description:Radiation therapy is an effective cancer treatment although damage to healthy tissues is common. Here we establish sequencing-based, cell-type specific DNA methylation reference maps of human and mouse tissues to infer the origins of cell-free DNA fragments released from dying cells into the circulation. We find cell-type specific DNA blocks mostly hypomethylated and located within genes intrinsic to cellular identity. In a mouse model, thoracic radiation-induced tissue damages were reflected by dose-dependent increases in lung endothelial, cardiomyocyte and hepatocyte methylated DNA in serum. The analysis of serum samples from breast cancer patients undergoing radiation treatment revealed distinct tissue-specific epithelial and endothelial responses to radiation across multiple organs. Strikingly, patients treated for right-sided breast cancers also showed increased hepatocyte and liver endothelial DNA in the circulation indicating the impact on liver tissues. Thus, cell-free methylated DNA in serum can uncover cell-type specific effects of radiation on healthy tissues and inform treatment.

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Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Human Reference Cell-type MCC-seq]

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Cell-free, methylated DNA in blood samples reveals tissue-specific, cellular damage from radiation treatment

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Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Human Serum MCC-seq]

Project description:Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Human Serum MCC-seq]

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Project description:Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Mouse Serum MCC-seq]

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Project description:Circulating cell-free, methylated DNA reveals tissue-specific, cellular damage from radiation treatment [Human Reference Cell-type MCC-seq]

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