期刊
JOURNAL OF MOLECULAR ENDOCRINOLOGY
卷 51, 期 3, 页码 T37-T50出版社
BIOSCIENTIFICA LTD
DOI: 10.1530/JME-13-0216
关键词
cell-specific; lineage determining transcription factors; signal dependent transcription factors; genome-wide analyses
资金
- American Heart Association Predoctoral Fellowship
- NIH [DK091183, DK074868, CA17390]
The ability to regulate gene expression in a cell-specific manner is a feature of many broadly expressed signal-dependent transcription factors (SDTFs), including nuclear hormone receptors and transcription factors that are activated by cell surface receptors for extracellular signals. As the most plastic cells of the hematopoietic system, macrophages are responsive to a wide spectrum of regulatory molecules and provide a robust model system for investigation of the basis for cell-specific transcriptional responses at a genome-wide level. Here, focusing on recent studies in macrophages, we review the evidence suggesting a model in which cell-specific actions of SDTFs are the consequence of priming functions of lineage determining transcription factors. We also discuss recent findings relating lineage-determining and SDTF activity to alterations in the epigenetic landscape as well as the production and function of enhancer RNAs. These findings have implications for the understanding of how natural genetic variation impacts cell-specific programs of gene expression and suggest new approaches for altering gene expression in vivo.
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