Epigenetic regulation of lymphoid specific gene sets

Ildikó Györy, J. Mináróvits

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Coregulation of lymphoid-specific gene sets is achieved by a series of epigenetic mechanisms. Association with higher-order chromosomal structures (nuclear subcompartments repressing or favouring gene expression) and locus control regions affects recombination and transcription of clonotypic antigen receptors and expression of a series of other lymphoid-specific genes. Locus control regions can regulate DNA methylation patterns in their vicinity. They may induce tissue- and site-specific DNA demethylation and affect, thereby, accessibility to recombination-activating proteins, transcription factors, and enzymes involved in histone modifications. Both DNA methylation and the Polycomb group of proteins (PcG) function as alternative systems of epigenetic memory in lymphoid cells. Complexes of PcG proteins mark their target genes by covalent histone tail modifications and influence lymphoid development and rearrangement of IgH genes. Ectopic expression of protein noncoding microRNAs may affect the generation of B-lineage cells, too, by guiding effector complexes to sites of heterochromatin assembly. Coregulation of lymphoid and viral promoters is also possible. EBNA 2, a nuclear protein encoded by episomal Epstein-Barr virus genomes, binds to the cellular protein CBF1 (C promoter binding factor 1) and operates, thereby, a regulatory network to activate latent viral promoters and cellular promoters associated with CBF1 binding sites.

Original languageEnglish
Pages (from-to)286-295
Number of pages10
JournalBiochemistry and Cell Biology
Volume83
Issue number3
DOIs
Publication statusPublished - Jun 2005

Fingerprint

Histone Code
Locus Control Region
Polycomb-Group Proteins
Epigenomics
Genes
DNA Methylation
Genetic Recombination
Activating Transcription Factors
Antigen Receptors
Proteins
Heterochromatin
Gene Rearrangement
Histones
Nuclear Proteins
Protein C
MicroRNAs
Human Herpesvirus 4
Binding Sites
Genome
Lymphocytes

Keywords

  • Coregulation of gene batteries
  • DNA methylation
  • EBNA 2
  • Epigenetic regulation
  • Epstein-Barr virus
  • Histone modifications
  • Locus control region
  • Lymphoid cells
  • MicroRNA
  • Nuclear subcompartment switch
  • Polycomb group of proteins
  • Regulatory network

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Cell Biology

Cite this

Epigenetic regulation of lymphoid specific gene sets. / Györy, Ildikó; Mináróvits, J.

In: Biochemistry and Cell Biology, Vol. 83, No. 3, 06.2005, p. 286-295.

Research output: Contribution to journalArticle

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