An RNA polymerase II construct synthesizes short-hairpin RNA with a quantitative indicator and mediates highly efficient RNAi
UMass Chan Affiliations
Department of Biochemistry and Molecular PharmacologyDocument Type
Journal ArticlePublication Date
2005-04-05Keywords
Biological MarkersCell Line
Humans
MicroRNAs
Nucleic Acid Conformation
Promoter Regions (Genetics)
*RNA Interference
RNA Polymerase II
RNA, Small Interfering
Ubiquitin C
Life Sciences
Medicine and Health Sciences
Metadata
Show full item recordAbstract
RNA interference (RNAi) mediates gene silencing in many eukaryotes and has been widely used to investigate gene functions. A common method to induce sustained RNAi is introducing plasmids that synthesize short hairpin RNAs (shRNAs) using Pol III promoters. While these promoters synthesize shRNAs and elicit RNAi efficiently, they lack cell specificity. Monitoring shRNA expression levels in individual cells by Pol III promoters is also difficult. An alternative way to deliver RNAi is to use Pol II-directed synthesis of shRNA. Previous efforts in developing a Pol II system have been sparse and the results were conflicting, and the usefulness of those Pol II vectors has been limited due to low efficacy. Here we demonstrate a new Pol II system that directs efficient shRNA synthesis and mediates strong RNAi at levels that are comparable with the commonly used Pol III systems. In addition, this system synthesizes a marker protein under control of the same promoter as the shRNA, thus providing an unequivocal indicator, not only to the cells that express the shRNA, but also to the levels of the shRNA expression. This system may be adapted for in vivo shRNA expression and gene silencing.Source
Nucleic Acids Res. 2005 Apr 1;33(6):e62. Link to article on publisher's siteDOI
10.1093/nar/gni061Permanent Link to this Item
http://hdl.handle.net/20.500.14038/38857PubMed ID
15805121Related Resources
Link to Article in PubMedae974a485f413a2113503eed53cd6c53
10.1093/nar/gni061