Abstract
One critical determinant of levels of gene expression is binding of transcription factors to cognate DNA sequences in promoter and enhancer regions of target genes. Transcription factors are DNA-binding proteins to which transcriptional co-regulators are bound, ultimately resulting in histone modifications that change chromatin structure to regulate transcription. Examples of transcription factors include hormone-activated transcription factors such as the glucocorticoid receptor, transcription factors regulated by cell surface receptors such as FOXO1 and Smad2/Smad3, and many others. Promoter regions typically contain multiple, diverse transcription factor-binding sites. Binding sites for cell-type-specific transcription factors involved in cell fate determination such as Runx2, MyoD, or myogenin are frequently observed. Promoter regions are located within ~2 kb upstream of the transcriptional start site, whereas enhancers may be located at some distance from promoter sequences and exert long-range effects. Here, we will discuss classical and emerging technologies by which one can understand the role of binding of specific transcription factors in regulation of transcription of FOXO genes.
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This work was supported by VA Rehabilitation Research and Development Grant B-2020-C.
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Cardozo, C.P. (2019). Identification of Transcription Factor-Binding Sites in the Mouse FOXO1 Promoter. In: Link, W. (eds) FOXO Transcription Factors. Methods in Molecular Biology, vol 1890. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-8900-3_3
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