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High-throughput iSpinach fluorescent aptamer-based real-time monitoring of in vitro transcription

Authors :
Weitong Qin
Liang Li
Fan Yang
Siyuan Wang
Guang-Yu Yang
Source :
Bioresources and Bioprocessing, Vol 9, Iss 1, Pp 1-11 (2022)
Publication Year :
2022
Publisher :
SpringerOpen, 2022.

Abstract

Abstract In vitro transcription (IVT) is an essential technique for RNA synthesis. Methods for the accurate and rapid screening of IVT conditions will facilitate RNA polymerase engineering, promoter optimization, and screening for new transcription inhibitor drugs. However, traditional polyacrylamide gel electrophoresis (PAGE) and high-performance liquid chromatography methods are labor intensive, time consuming and not compatible with real-time analysis. Here, we developed an inexpensive, high-throughput, and real-time detection method for the monitoring of in vitro RNA synthesis called iSpinach aptamer-based monitoring of Transcription Activity in Real-time (STAR). STAR has a detection speed at least 100 times faster than conventional PAGE method and provides comparable results in the analysis of in vitro RNA synthesis reactions. It also can be used as an easy and quantitative method to detect the catalytic activity of T7 RNA polymerase. To further demonstrate the utility of STAR, it was applied to optimize the initially transcribed region of the green fluorescent protein gene and the 3T4T variants demonstrated significantly enhanced transcription output, with at least 1.7-fold and 2.8-fold greater output than the wild-type DNA template and common transcription template, respectively. STAR may provide a valuable tool for many biotechnical applications related to the transcription process, which may pave the way for the development of better RNA-related enzymes and new drugs. Graphical Abstract iSpinach aptamer-based monitoring of transcription activity in real-time (STAR).

Details

Language :
English
ISSN :
21974365
Volume :
9
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Bioresources and Bioprocessing
Publication Type :
Academic Journal
Accession number :
edsdoj.93d0696bc5684146a60f6c68ca254d4a
Document Type :
article
Full Text :
https://doi.org/10.1186/s40643-022-00598-0