Rapid,precise,and tunable regulation of protein abundance would be significantly useful in a variety of biotechnologies and biomedical applications.Here,we describe a system that allows tunable and rapid drug control ...Rapid,precise,and tunable regulation of protein abundance would be significantly useful in a variety of biotechnologies and biomedical applications.Here,we describe a system that allows tunable and rapid drug control of gene expression for either gene activation or inactivation in mammalian cells.We construct the system by coupling Tet-on 3 G and small molecule-assisted shutoff systems,which can respectively induce transcriptional activation and protein degradation in the presence of corresponding small molecules.This dual-input drug inducer regulation system facilitates a bidirectional control of gene expression.The gene of interest can be precisely controlled by dual small molecules in a broad dynamic range of expression from overexpression to complete silence,allowing gene function study in a comprehensive expression profile.Our results reveal that the bidirectional control system enables sensitive dosage-and time-dependent regulation for either turn-on or shutoff of gene expression.We also apply this system for inducible genome editing and gene activation mediated by clustered regularly interspaced short palindromic repeats.The system provides an integrated platform for studying multiple biological processes by manipulating gene expression in a more flexible way.展开更多
基金supported by the National Natural Science Foundation of China(81800555,81701580,and 31972926)the National Key R&D Program of China(2018YFC1106400)+1 种基金the Science and Technology Planning Project of Guangdong Province(2015B020229002)the Natural Science Foundation of Guangdong Province(2014A030312013 and 2018A030313128)
文摘Rapid,precise,and tunable regulation of protein abundance would be significantly useful in a variety of biotechnologies and biomedical applications.Here,we describe a system that allows tunable and rapid drug control of gene expression for either gene activation or inactivation in mammalian cells.We construct the system by coupling Tet-on 3 G and small molecule-assisted shutoff systems,which can respectively induce transcriptional activation and protein degradation in the presence of corresponding small molecules.This dual-input drug inducer regulation system facilitates a bidirectional control of gene expression.The gene of interest can be precisely controlled by dual small molecules in a broad dynamic range of expression from overexpression to complete silence,allowing gene function study in a comprehensive expression profile.Our results reveal that the bidirectional control system enables sensitive dosage-and time-dependent regulation for either turn-on or shutoff of gene expression.We also apply this system for inducible genome editing and gene activation mediated by clustered regularly interspaced short palindromic repeats.The system provides an integrated platform for studying multiple biological processes by manipulating gene expression in a more flexible way.
