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Developmental priming of cancer susceptibility [RNA-seq - matched healthy and tumor tissues]

ABSTRACT: Developmental priming of cancer susceptibility [RNA-seq - matched healthy and tumor tissues]

PROVIDER: PRJNA1095465 | ENA |

REPOSITORIES: ENA

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Developmental priming of cancer susceptibility

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Project description:DNA mutations are necessary drivers of cancer, yet only a small subset of mutated cells go on to cause the disease. To date, the mechanisms that determine which rare subset of cells transform and initiate tumorigenesis remain unclear. Here, we take advantage of a unique model of intrinsic developmental heterogeneity (Trim28+/D9) and demonstrate that stochastic early life epigenetic variation can trigger distinct cancer-susceptibility ‘states’ in adulthood. We show that these developmentally primed states are characterized by differential methylation patterns at typically silenced heterochromatin, and that these epigenetic signatures are detectable as early as 10 days of age. The differentially methylated loci are enriched for genes with known oncogenic potential. These same genes are frequently mutated in human cancers, and their dysregulation correlates with poor prognosis. These results provide proof-of-concept that intrinsic developmental heterogeneity can prime individual, life-long cancer risk.

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