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Whole-genome Fingerprint of the DNA Methylome During Human B Cell Differentiation

Abstract

We analyzed the DNA methylome of ten subpopulations spanning the entire B cell differentiation program by whole-genome bisulfite sequencing and high-density microarrays. We observed that non-CpG methylation disappeared upon B cell commitment, whereas CpG methylation changed extensively during B cell maturation, showing an accumulative pattern and affecting around 30% of all measured CpG sites. Early differentiation stages mainly displayed enhancer demethylation, which was associated with upregulation of key B cell transcription factors and affected multiple genes involved in B cell biology. Late differentiation stages, in contrast, showed extensive demethylation of heterochromatin and methylation gain at Polycomb-repressed areas, and genes with apparent functional impact in B cells were not affected. This signature, which has previously been linked to aging and cancer, was particularly widespread in mature cells with an extended lifespan. Comparing B cell neoplasms with their normal counterparts, we determined that they frequently acquire methylation changes in regions already undergoing dynamic methylation during normal B cell differentiation.

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References
1.
Hansen K, Timp W, Corrada Bravo H, Sabunciyan S, Langmead B, McDonald O . Increased methylation variation in epigenetic domains across cancer types. Nat Genet. 2011; 43(8):768-75. PMC: 3145050. DOI: 10.1038/ng.865. View

2.
Habibi E, Brinkman A, Arand J, Kroeze L, Kerstens H, Matarese F . Whole-genome bisulfite sequencing of two distinct interconvertible DNA methylomes of mouse embryonic stem cells. Cell Stem Cell. 2013; 13(3):360-9. DOI: 10.1016/j.stem.2013.06.002. View

3.
Manz R, Thiel A, Radbruch A . Lifetime of plasma cells in the bone marrow. Nature. 1997; 388(6638):133-4. DOI: 10.1038/40540. View

4.
Stadler M, Murr R, Burger L, Ivanek R, Lienert F, Scholer A . DNA-binding factors shape the mouse methylome at distal regulatory regions. Nature. 2011; 480(7378):490-5. DOI: 10.1038/nature10716. View

5.
Martin-Subero J, Kreuz M, Bibikova M, Bentink S, Ammerpohl O, Wickham-Garcia E . New insights into the biology and origin of mature aggressive B-cell lymphomas by combined epigenomic, genomic, and transcriptional profiling. Blood. 2008; 113(11):2488-97. DOI: 10.1182/blood-2008-04-152900. View