Abstract
In maturing T lineage cells, the helix–loop–helix protein E47 has been shown to enforce a critical proliferation and developmental checkpoint commonly referred to as β selection. To examine how E47 regulates cellular expansion and developmental progression, we have used an E2A-deficient lymphoma cell line and DNA microarray analysis to identify immediate E47 target genes. Hierarchical cluster analysis of gene expression patterns revealed that E47 coordinately regulates the expression of genes involved in cell survival, cell cycle progression, lipid metabolism, stress response, and lymphoid maturation. These include Plcγ2, Cdk6, CD25, Tox, Gadd45a, Gadd45b, Gfi1, Gfi1b, Socs1, Socs3, Id2, Eto2, and Xbp1. We propose a regulatory network linking Janus kinase (JAK)/signal transducer and activator of transcription (STAT)-mediated signaling, E47, and suppressor of cytokine signaling (SOCS) proteins in a common pathway. Finally, we suggest that the aberrant activation of Cdk6 in E47-deficient T lineage cells contributes to the development of lymphoid malignancy.
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Dates
Type | When |
---|---|
Created | 19 years, 2 months ago (June 16, 2006, 9:16 p.m.) |
Deposited | 2 years, 3 months ago (May 7, 2023, 3:19 p.m.) |
Indexed | 5 months ago (March 30, 2025, 12:20 a.m.) |
Issued | 19 years, 2 months ago (June 27, 2006) |
Published | 19 years, 2 months ago (June 27, 2006) |
Published Online | 19 years, 2 months ago (June 27, 2006) |
Published Print | 19 years, 2 months ago (June 27, 2006) |
@article{Schwartz_2006, title={Gene expression patterns define novel roles for E47 in cell cycle progression, cytokine-mediated signaling, and T lineage development}, volume={103}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.0603728103}, DOI={10.1073/pnas.0603728103}, number={26}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Schwartz, Ruth and Engel, Isaac and Fallahi-Sichani, Mohammad and Petrie, Howard T. and Murre, Cornelis}, year={2006}, month=jun, pages={9976–9981} }