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Isolation of Newly Transcribed RNA Using the Metabolic Label 4-Thiouridine


Isolation of newly transcribed RNA is an invaluable approach that can be used to study the dynamic life of RNA in cellulo. Traditional methods of whole-cell RNA extraction limit subsequent gene expression analyses to the steady-state levels of RNA abundance, which often masks changes in RNA synthesis and processing. This chapter describes a methodology with low cytotoxicity that permits the labeling and isolation of nascent pre-mRNA in cell culture. The resulting isolate is suitable for use in a series of downstream applications aimed at studying changes in RNA synthesis, processing, or stability.

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