Abstract
During the differentiation of T and B cells, immune-receptor loci in the genome must be made sterically accessible so that they can undergo rearrangement. Here, we discuss how this is carried out by the stepwise removal of epigenetic repression mechanisms-such as later-replication timing, heterochromatization, histone hypo-acetylation and DNA methylation - in a manner that initially favours one allele in each cell. We propose that this mechanism of allelic exclusion might also be the basis for the generation of gene diversity in other systems.
Original language | English |
---|---|
Pages (from-to) | 753-761 |
Number of pages | 9 |
Journal | Nature Reviews Immunology |
Volume | 4 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2004 |
Bibliographical note
Funding Information:Y.B. and H.C. are supported by research grants from the Israel Academy of Sciences and Humanities, and the National Institutes of Health, United States. Y.B. is also supported by the Fifth European Community Framework Programme on Quality of Life and Management of Living Resources. H.C. is also supported by the Israel Cancer Research Fund.