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https://hdl.handle.net/2440/53421
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Type: | Journal article |
Title: | Attenuation of leakiness in doxycycline-inducible expression via incorporation of 3 ' AU-rich mRNA destabilizing elements |
Author: | Pham, D. Moretti, P. Goodall, G. Pitson, S. |
Citation: | BioTechniques: the journal of laboratory technology for bioresearch, 2008; 45(2):155-162 |
Publisher: | Eaton Publishing Co |
Issue Date: | 2008 |
ISSN: | 0736-6205 1940-9818 |
Statement of Responsibility: | Duyen H. Pham, Paul A.B. Moretti, Gregory J. Goodall and Stuart M. Pitson |
Abstract: | Tetracycline-regulated expression systems have been widely used for inducible protein expression in cultured mammalian cells. With these systems, however, leakiness in expression of the target gene in the absence of the inducing agent is a frequent problem. Here we describe a novel approach to overcome this problem that involves the incorporation of AU-rich mRNA destabilizing elements (AREs) into the 3′ untranslated regions of the tetracycline-inducible constructs. Using the inducible expression of sphingosine kinase 1 and 2 in HEK293 cells as model systems, we found this ARE approach to be remarkably successful in ablating expression of these proteins in the absence of doxycycline through decreasing stability of their mRNAs. We show that this undemanding and flexible process results in a substantial decrease in the leakiness of the tetracycline-inducible expression system while maintaining a high level of target protein expression following induction. |
Keywords: | Cells, Cultured Humans Doxycycline Phosphotransferases (Alcohol Group Acceptor) RNA, Messenger 3' Untranslated Regions Gene Expression Regulation Base Sequence RNA Stability Molecular Sequence Data |
Description: | © 2008 BioTechniques |
DOI: | 10.2144/000112896 |
Published version: | http://dx.doi.org/10.2144/000112896 |
Appears in Collections: | Aurora harvest 5 Molecular and Biomedical Science publications |
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