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DNA Methylation and Somatic Mutations Converge on the Cell Cycle and Define Similar Evolutionary Histories in Brain Tumors

Abstract

The evolutionary history of tumor cell populations can be reconstructed from patterns of genetic alterations. In contrast to stable genetic events, epigenetic states are reversible and sensitive to the microenvironment, prompting the question whether epigenetic information can similarly be used to discover tumor phylogeny. We examined the spatial and temporal dynamics of DNA methylation in a cohort of low-grade gliomas and their patient-matched recurrences. Genes transcriptionally upregulated through promoter hypomethylation during malignant progression to high-grade glioblastoma were enriched in cell cycle function, evolving in parallel with genetic alterations that deregulate the G1/S cell cycle checkpoint. Moreover, phyloepigenetic relationships robustly recapitulated phylogenetic patterns inferred from somatic mutations. These findings highlight widespread co-dependency of genetic and epigenetic events throughout brain tumor evolution.

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References
1.
Costello J, Berger M, Huang H, Cavenee W . Silencing of p16/CDKN2 expression in human gliomas by methylation and chromatin condensation. Cancer Res. 1996; 56(10):2405-10. View

2.
Sproul D, Kitchen R, Nestor C, Dixon J, Sims A, Harrison D . Tissue of origin determines cancer-associated CpG island promoter hypermethylation patterns. Genome Biol. 2012; 13(10):R84. PMC: 3491412. DOI: 10.1186/gb-2012-13-10-r84. View

3.
Watanabe T, Nobusawa S, Kleihues P, Ohgaki H . IDH1 mutations are early events in the development of astrocytomas and oligodendrogliomas. Am J Pathol. 2009; 174(4):1149-53. PMC: 2671348. DOI: 10.2353/ajpath.2009.080958. View

4.
Rufini A, Agostini M, Grespi F, Tomasini R, Sayan B, Niklison-Chirou M . p73 in Cancer. Genes Cancer. 2011; 2(4):491-502. PMC: 3135637. DOI: 10.1177/1947601911408890. View

5.
Eckhardt F, Lewin J, Cortese R, Rakyan V, Attwood J, Burger M . DNA methylation profiling of human chromosomes 6, 20 and 22. Nat Genet. 2006; 38(12):1378-85. PMC: 3082778. DOI: 10.1038/ng1909. View