Science 280(5363):585–590įemino AM, Fogarty K, Lifshitz LM, Carrington W, Singer RH (2003) Visualization of single molecules of mRNA in situ. įemino AM, Fay FS, Fogarty K, Singer RH (1998) Visualization of single RNA transcripts in situ. Liu Y, Beyer A, Aebersold R (2016) On the dependency of cellular protein levels on mRNA abundance. Raj A, van Oudenaarden A (2008) Nature, nurture, or chance: stochastic gene expression and its consequences. Vera M, Biswas J, Senecal A, Singer RH, Park HY (2016) Single-cell and single-molecule analysis of gene expression regulation. Tutucci E, Livingston NM, Singer RH, Wu B (2018) Imaging mRNA in vivo, from birth to death. cerevisiae and mammalian cells, respectively. Moreover, we describe protocols using MS2-MCP systems improved for real-time imaging of single mRNAs and transcription dynamics in S. In this chapter, we discuss the improvements in detecting single mRNAs with different variants of MCP and fluorescent proteins that we tested in yeast and mammalian cells. The recent development of optimized MS2 and MCP variants now allows the labeling of endogenous RNAs and their imaging without modifying their behavior. This system has been successfully used to track the different steps of mRNA processing in many living organisms. ![]() One of the best characterized RNA-tagging systems is derived from the bacteriophage MS2 and it allows single RNA imaging in real-time and live cells. Most of these studies used for live imaging a genetically encoded RNA-tagging system fused to fluorescent proteins. These studies have provided a comprehensive understanding of RNA metabolism by describing the process step by step. Live imaging of single RNA from birth to death brought important advances in our understanding of the spatiotemporal regulation of gene expression.
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