![[feed]](/style/images/feed-icon-14x14.png){kind=icon}
Tools
Tools
Preview |
PDF (Original Article)
- Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
2MB |
![[thumbnail of Supplemental Information]](https://edoc.mdc-berlin.de/style/images/fileicons/other.png) |
Other (Supplemental Information)
3MB |
| Item Type: | Article |
|---|---|
| Title: | Whole-epigenome analysis in multiple myeloma reveals DNA hypermethylation of B cell-specific enhancers |
| Creators Name: | Agirre, X., Castellano, G., Pascual, M., Heath, S., Kulis, M., Segura, V., Bergmann, A., Esteve, A., Merkel, A., Raineri, E., Agueda, L., Blanc, J., Richardson, D., Clarke, L., Datta, A., Russiñol, N., Queirós, A.C., Beekman, R., Rodríguez-Madoz, J.R., San José-Enériz, E., Fang, F., Gutiérrez, N.C., García-Verdugo, J.M., Robson, M.I., Schirmer, E.C., Guruceaga, E., Martens, J.H.A., Gut, M., Calasanz, M.J., Flicek, P., Siebert, R., Campo, E., Miguel, J.F.S., Melnick, A., Stunnenberg, H.G., Gut, I.G., Prosper, F. and Martín-Subero, J.I. |
| Abstract: | While analyzing the DNA methylome of multiple myeloma (MM), a plasma cell neoplasm, by whole-genome bisulfite sequencing and high-density arrays, we observed a highly heterogeneous pattern globally characterized by regional DNA hypermethylation embedded in extensive hypomethylation. In contrast to the widely reported DNA hypermethylation of promoter-associated CpG islands (CGIs) in cancer, hypermethylated sites in MM, as opposed to normal plasma cells, were located outside CpG islands and were unexpectedly associated with intronic enhancer regions defined in normal B cells and plasma cells. Both RNA-seq and in vitro reporter assays indicated that enhancer hypermethylation is globally associated with down-regulation of its host genes. ChIP-seq and DNase-seq further revealed that DNA hypermethylation in these regions is related to enhancer decommissioning. Hypermethylated enhancer regions overlapped with binding sites of B cell-specific transcription factors (TFs) and the degree of enhancer methylation inversely correlated with expression levels of these TFs in MM. Furthermore, hypermethylated regions in MM were methylated in stem cells and gradually became demethylated during normal B-cell differentiation, suggesting that MM cells either reacquire epigenetic features of undifferentiated cells or maintain an epigenetic signature of a putative myeloma stem cell progenitor. Overall, we have identified DNA hypermethylation of developmentally regulated enhancers as a new type of epigenetic modification associated with the pathogenesis of MM. |
| Keywords: | Cell Differentiation, Tumor Cell Line, CpG Islands, DNA Methylation, Neoplasm DNA, Down-Regulation, Genetic Enhancer Elements, Genetic Epigenesis, Neoplastic Gene Expression Regulation, Human Genome, Multiple Myeloma, Neoplastic Stem Cells, Plasma Cells, Genetic Promoter Regions, Transcription Factors |
| Source: | Genome Research |
| ISSN: | 1088-9051 |
| Publisher: | Cold Spring Harbor Laboratory Press |
| Volume: | 25 |
| Number: | 4 |
| Page Range: | 478-487 |
| Date: | April 2015 |
| Official Publication: | https://doi.org/10.1101/gr.180240.114 |
| PubMed: | View item in PubMed |
Repository Staff Only: item control page
