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Cancer genes hypermethylated in human embryonic stem cells.

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Date

2008-09-29

Authors

Calvanese, Vincenzo
Horrillo, Angelica
Hmadcha, Abdelkrim
Suarez-Alvarez, Beatriz
Fernandez, Agustín F
Lara, Ester
Casado, Sara
Menendez, Pablo
Bueno, Clara
Garcia-Castro, Javier

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Public library of Science
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Abstract

Developmental genes are silenced in embryonic stem cells by a bivalent histone-based chromatin mark. It has been proposed that this mark also confers a predisposition to aberrant DNA promoter hypermethylation of tumor suppressor genes (TSGs) in cancer. We report here that silencing of a significant proportion of these TSGs in human embryonic and adult stem cells is associated with promoter DNA hypermethylation. Our results indicate a role for DNA methylation in the control of gene expression in human stem cells and suggest that, for genes repressed by promoter hypermethylation in stem cells in vivo, the aberrant process in cancer could be understood as a defect in establishing an unmethylated promoter during differentiation, rather than as an anomalous process of de novo hypermethylation.

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Journal Article; Research Support, Non-U.S. Gov't;

MeSH Terms

Medical Subject Headings::Anatomy::Cells::Cells, Cultured::Cell Line::L Cells (Cell Line)
Medical Subject Headings::Anatomy::Cells::Cellular Structures::Intracellular Space::Cell Nucleus::Cell Nucleus Structures::Intranuclear Space::Chromosomes::Chromosome Structures::Chromatin
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Processes::DNA Methylation
Medical Subject Headings::Anatomy::Cells::Stem Cells::Embryonic Stem Cells
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Processes::Gene Expression Regulation::Gene Expression Regulation, Developmental
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Processes::Gene Expression Regulation::Epigenesis, Genetic::Gene Silencing
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Genes, Neoplasm
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Genes, Neoplasm
Medical Subject Headings::Anatomy::Cells::Cells, Cultured::Cell Line::Cell Line, Tumor::HeLa Cells
Medical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans
Medical Subject Headings::Diseases::Neoplasms
Medical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Gene Components
Medical Subject Headings::Phenomena and Processes::Physical Phenomena::Time::Time Factors
Medical Subject Headings::Anatomy::Cells::Cells, Cultured::Cell Line::Cell Line, Tumor::U937 Cells
Medical Subject Headings::Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Differentiation

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Keywords

Chromatin

Citation

Calvanese V, Horrillo A, Hmadcha A, Suarez-Alvarez B, Fernandez AF, Lara E, et al. Cancer genes hypermethylated in human embryonic stem cells. PLoS ONE; 3(9):e3294