PMID- 20025734 OWN - NLM STAT- MEDLINE DCOM- 20100315 LR - 20211020 IS - 1471-2407 (Electronic) IS - 1471-2407 (Linking) VI - 9 DP - 2009 Dec 21 TI - Array-based DNA methylation profiling of primary lymphomas of the central nervous system. PG - 455 LID - 10.1186/1471-2407-9-455 [doi] AB - BACKGROUND: Although primary lymphomas of the central nervous system (PCNSL) and extracerebral diffuse large B-cell lymphoma (DLBCL) cannot be distinguished histologically, it is still a matter of debate whether PCNSL differ from systemic DLBCL with respect to their molecular features and pathogenesis. Analysis of the DNA methylation pattern might provide further data distinguishing these entities at a molecular level. METHODS: Using an array-based technology we have assessed the DNA methylation status of 1,505 individual CpG loci in five PCNSL and compared the results to DNA methylation profiles of 49 DLBCL and ten hematopoietic controls. RESULTS: We identified 194 genes differentially methylated between PCNSL and normal controls. Interestingly, Polycomb target genes and genes with promoters showing a high CpG content were significantly enriched in the group of genes hypermethylated in PCNSL. However, PCNSL and systemic DLBCL did not differ in their methylation pattern. CONCLUSIONS: Based on the data presented here, PCNSL and DLBCL do not differ in their DNA methylation pattern. Thus, DNA methylation analysis does not support a separation of PCNSL and DLBCL into individual entities. However, PCNSL and DLBCL differ in their DNA methylation pattern from non- malignant controls. FAU - Richter, Julia AU - Richter J AD - Institute of Human Genetics, University Hospital Schleswig-Holstein Campus Kiel/Christian-Albrechts University Kiel, Germany. jrichter@medgen.uni-kiel.de FAU - Ammerpohl, Ole AU - Ammerpohl O FAU - Martin-Subero, Jose I AU - Martin-Subero JI FAU - Montesinos-Rongen, Manuel AU - Montesinos-Rongen M FAU - Bibikova, Marina AU - Bibikova M FAU - Wickham-Garcia, Eliza AU - Wickham-Garcia E FAU - Wiestler, Otmar D AU - Wiestler OD FAU - Deckert, Martina AU - Deckert M FAU - Siebert, Reiner AU - Siebert R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091221 PL - England TA - BMC Cancer JT - BMC cancer JID - 100967800 RN - 0 (Polycomb-Group Proteins) RN - 0 (Repressor Proteins) SB - IM MH - Central Nervous System Neoplasms/*genetics/metabolism/pathology MH - Cluster Analysis MH - CpG Islands/genetics MH - *DNA Methylation MH - Embryonic Stem Cells/metabolism MH - Female MH - Gene Expression Profiling/methods MH - Gene Expression Regulation, Neoplastic MH - Hematopoiesis/genetics MH - Humans MH - Lymphoma/*genetics MH - *Oligonucleotide Array Sequence Analysis/methods MH - Polycomb-Group Proteins MH - Repressor Proteins/metabolism/physiology PMC - PMC2807878 EDAT- 2009/12/23 06:00 MHDA- 2010/03/17 06:00 PMCR- 2009/12/21 CRDT- 2009/12/23 06:00 PHST- 2009/07/16 00:00 [received] PHST- 2009/12/21 00:00 [accepted] PHST- 2009/12/23 06:00 [entrez] PHST- 2009/12/23 06:00 [pubmed] PHST- 2010/03/17 06:00 [medline] PHST- 2009/12/21 00:00 [pmc-release] AID - 1471-2407-9-455 [pii] AID - 10.1186/1471-2407-9-455 [doi] PST - epublish SO - BMC Cancer. 2009 Dec 21;9:455. doi: 10.1186/1471-2407-9-455.