Issue 11, 2016

Regulation of MAP4K4 gene expression by RNA interference through an engineered theophylline-dependent hepatitis delta virus ribozyme switch

Abstract

Riboswitches are functional non-coding RNA regulatory components that play an important role in the regulation of gene expression in diverse organisms. In particular, using riboswitches to modulate RNA interference (RNAi) enables temporal and spatial control of gene expression in mammalian cells. Herein, a ribozyme gene switch to activate RNAi was fabricated for the artificial regulation of versatile gene silencing through the interaction of an RNA aptamer with small molecules. The device comprised an allosteric HDV ribozyme with an embedded theophylline aptamer and a primary miRNA (pri-miRNA) to silence the MAP4K4 gene in hepatic (HepG2) cells, aiming to achieve dose-dependent control of the activation of RNAi, and then the regulation of the MAP4K4 gene by theophylline. Finally, we demonstrated the feasibility and applicability of utilizing HDV ribozyme switches to activate RNAi for regulating an endogenous gene in mammalian cells.

Graphical abstract: Regulation of MAP4K4 gene expression by RNA interference through an engineered theophylline-dependent hepatitis delta virus ribozyme switch

Article information

Article type
Paper
Submitted
20 Jul 2016
Accepted
24 Aug 2016
First published
25 Aug 2016

Mol. BioSyst., 2016,12, 3370-3376

Regulation of MAP4K4 gene expression by RNA interference through an engineered theophylline-dependent hepatitis delta virus ribozyme switch

H. Cheng, Y. Zhang, H. Wang, N. Sun, M. Liu, H. Chen and R. Pei, Mol. BioSyst., 2016, 12, 3370 DOI: 10.1039/C6MB00540C

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