| Dokumentenart: | Artikel | ||||||||||||||||||||||||||||||||||
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| Titel eines Journals oder einer Zeitschrift: | Blood | ||||||||||||||||||||||||||||||||||
| Verlag: | American Society of Hematology | ||||||||||||||||||||||||||||||||||
| Band: | 113 | ||||||||||||||||||||||||||||||||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 11 | ||||||||||||||||||||||||||||||||||
| Seitenbereich: | S. 2488-2497 | ||||||||||||||||||||||||||||||||||
| Datum: | März 2009 | ||||||||||||||||||||||||||||||||||
| Institutionen: | Medizin > Institut für Funktionelle Genomik > Lehrstuhl für Statistische Bioinformatik (Prof. Spang) Informatik und Data Science > Lehrstuhl für Statistische Bioinformatik (Prof. Spang) | ||||||||||||||||||||||||||||||||||
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin | ||||||||||||||||||||||||||||||||||
| Status: | Veröffentlicht | ||||||||||||||||||||||||||||||||||
| Begutachtet: | Ja, diese Version wurde begutachtet | ||||||||||||||||||||||||||||||||||
| An der Universität Regensburg entstanden: | Zum Teil | ||||||||||||||||||||||||||||||||||
| Dokumenten-ID: | 30654 |
Zusammenfassung
Lymphomas are assumed to originate at different stages of lymphocyte development through chromosomal aberrations. Thus, different lymphomas resemble lymphocytes at distinct differentiation stages and show characteristic morphologic, genetic, and transcriptional features. Here, we have performed a microarray-based DNA methylation profiling of 83 mature aggressive B-cell non-Hodgkin lymphomas ...
Zusammenfassung
Lymphomas are assumed to originate at different stages of lymphocyte development through chromosomal aberrations. Thus, different lymphomas resemble lymphocytes at distinct differentiation stages and show characteristic morphologic, genetic, and transcriptional features. Here, we have performed a microarray-based DNA methylation profiling of 83 mature aggressive B-cell non-Hodgkin lymphomas (maB-NHLs) characterized for their morphologic, genetic, and transcriptional features, including molecular Burkitt lymphomas and diffuse large B-cell lymphomas. Hierarchic clustering indicated that methylation patterns in maB-NHLs were not strictly associated with morphologic, genetic, or transcriptional features. By supervised analyses, we identified 56 genes de novo methylated in all lymphoma subtypes studied and 22 methylated in a lymphoma subtype-specific manner. Remarkably, the group of genes de novo methylated in all lymphoma subtypes was significantly enriched for polycomb targets in embryonic stem cells. De novo methylated genes in all maB-NHLs studied were expressed at low levels in lymphomas and normal hematopoietic tissues but not in nonhematopoietic tissues. These findings, especially the enrichment for polycomb targets in stem cells, indicate that maB-NHLs with different morphologic, genetic, and transcriptional background share a similar stem cell-like epigenetic pattern. This suggests that maB-NHLs originate from cells with stem cell features or that stemness was acquired during lymphomagenesis by epigenetic remodeling.
Metadaten zuletzt geändert: 29 Sep 2021 07:40
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