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Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes.

Publication ,  Journal Article
Greenbaum, S; Lazorchak, AS; Zhuang, Y
Published in: J Biol Chem
October 22, 2004

The transcription factors encoded by the E2A gene have been shown to play essential roles in the initiation and progression of lymphocyte development. However, there is still a lack of comprehensive understanding of E2A downstream genes in B-cell development. We previously developed a gene tagging-based chromatin immunoprecipitation (ChIP) system to directly evaluate E2A target genes in B-cell development. Here, we have improved this ChIP strategy and used it in conjunction with microarray analysis on E2A-deficient pre-B-cell lines to determine E2A target genes in lymphocyte development. Both microarray data and ChIP studies confirmed that E2A directly controls IgH gene expression. The microarray assay also revealed genes that were significantly up-regulated after E2A disruption. ChIP analysis showed that E2A was most likely to be directly involved in repression of some of these target genes such as Nfil3 and FGFR2. An inducible E2A reconstitution system further demonstrated that E2A-mediated repression of Nfil3 and FGFR2 was reversible. Collectively, these findings indicate that E2A is a positive regulator for one set of genes and a negative regulator for another set of genes in developing B lymphocytes.

Duke Scholars

Published In

J Biol Chem

DOI

ISSN

0021-9258

Publication Date

October 22, 2004

Volume

279

Issue

43

Start / End Page

45028 / 45035

Location

United States

Related Subject Headings

  • Transcription Factors
  • Reverse Transcriptase Polymerase Chain Reaction
  • Promoter Regions, Genetic
  • Polymerase Chain Reaction
  • Oligonucleotide Array Sequence Analysis
  • Mice
  • Immunoprecipitation
  • Immunoglobulin Heavy Chains
  • Humans
  • Green Fluorescent Proteins
 

Citation

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Greenbaum, S., Lazorchak, A. S., & Zhuang, Y. (2004). Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes. J Biol Chem, 279(43), 45028–45035. https://doi.org/10.1074/jbc.M400061200
Greenbaum, Stephen, Adam S. Lazorchak, and Yuan Zhuang. “Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes.J Biol Chem 279, no. 43 (October 22, 2004): 45028–35. https://doi.org/10.1074/jbc.M400061200.
Greenbaum S, Lazorchak AS, Zhuang Y. Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes. J Biol Chem. 2004 Oct 22;279(43):45028–35.
Greenbaum, Stephen, et al. “Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes.J Biol Chem, vol. 279, no. 43, Oct. 2004, pp. 45028–35. Pubmed, doi:10.1074/jbc.M400061200.
Greenbaum S, Lazorchak AS, Zhuang Y. Differential functions for the transcription factor E2A in positive and negative gene regulation in pre-B lymphocytes. J Biol Chem. 2004 Oct 22;279(43):45028–45035.

Published In

J Biol Chem

DOI

ISSN

0021-9258

Publication Date

October 22, 2004

Volume

279

Issue

43

Start / End Page

45028 / 45035

Location

United States

Related Subject Headings

  • Transcription Factors
  • Reverse Transcriptase Polymerase Chain Reaction
  • Promoter Regions, Genetic
  • Polymerase Chain Reaction
  • Oligonucleotide Array Sequence Analysis
  • Mice
  • Immunoprecipitation
  • Immunoglobulin Heavy Chains
  • Humans
  • Green Fluorescent Proteins