Genetic and epigenetic determinants of diffuse large B-cell lymphoma

Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma and is notorious for its heterogeneity, aggressive nature, and the frequent development of resistance and/or relapse after treatment with standard chemotherapy. To address these problems, a strong emphasis has been placed on r...

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Bibliographic Details
Published in:Blood cancer journal (New York) 2020-12, Vol.10 (12), p.123-123, Article 123
Main Authors: Bakhshi, Tanner J., Georgel, Philippe T.
Format: Article
Language:English
Subjects:
692/699
692/700
Biomedical and Life Sciences
Biomedicine
Cancer Research
Epigenesis, Genetic
Epigenetics
Gene Expression Regulation, Neoplastic
Hematology
Humans
Lymphoma
Lymphoma, Large B-Cell, Diffuse - genetics
Lymphoma, Large B-Cell, Diffuse - metabolism
Mutation
Neoplasm Proteins - genetics
Neoplasm Proteins - metabolism
Oncology
Protein Processing, Post-Translational
Review
Review Article
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Summary:Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma and is notorious for its heterogeneity, aggressive nature, and the frequent development of resistance and/or relapse after treatment with standard chemotherapy. To address these problems, a strong emphasis has been placed on researching the molecular origins and mechanisms of DLBCL to develop effective treatments. One of the major insights produced by such research is that DLBCL almost always stems from genetic damage that occurs during the germinal center (GC) reaction, which is required for the production of high-affinity antibodies. Indeed, there is significant overlap between the mechanisms that govern the GC reaction and those that drive the progression of DLBCL. A second important insight is that some of the most frequent genetic mutations that occur in DLBCL are those related to chromatin and epigenetics, especially those related to proteins that “write” histone post-translational modifications (PTMs). Mutation or deletion of these epigenetic writers often renders cells unable to epigenetically “switch on” critical gene sets that are required to exit the GC reaction, differentiate, repair DNA, and other essential cellular functions. Failure to activate these genes locks cells into a genotoxic state that is conducive to oncogenesis and/or relapse.
ISSN:2044-5385
2044-5385
DOI:10.1038/s41408-020-00389-w