Optical control of mammalian endogenous transcription and epigenetic states
Name
Zhang_Optical control.pdf
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Author(s)
Konermann, Silvana M.
Brigham, Mark D.
Trevino, Alexandro E.
Hsu, Patrick
Heidenreich, Matthias
Cong, Le
Platt, Randall Jeffrey
Scott, David Arthur
Church, George M.
Zhang, Feng
Date Issued
July 2013
Journal
Nature
Publisher
Nature Publishing Group
Citation
Konermann, Silvana, Mark D. Brigham, Alexandro Trevino, Patrick D. Hsu, Matthias Heidenreich, Le Cong, Randall J. Platt, David A. Scott, George M. Church, and Feng Zhang. “Optical Control of Mammalian Endogenous Transcription and Epigenetic States.” Nature (July 23, 2013).
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Author's final manuscript
Abstract
The dynamic nature of gene expression enables cellular programming, homeostasis and environmental adaptation in living systems. Dissection of causal gene functions in cellular and organismal processes therefore necessitates approaches that enable spatially and temporally precise modulation of gene expression. Recently, a variety of microbial and plant-derived light-sensitive proteins have been engineered as optogenetic actuators, enabling high-precision spatiotemporal control of many cellular functions. However, versatile and robust technologies that enable optical modulation of transcription in the mammalian endogenous genome remain elusive. Here we describe the development of light-inducible transcriptional effectors (LITEs), an optogenetic two-hybrid system integrating the customizable TALE DNA-binding domain with the light-sensitive cryptochrome 2 protein and its interacting partner CIB1 from Arabidopsis thaliana. LITEs do not require additional exogenous chemical cofactors, are easily customized to target many endogenous genomic loci, and can be activated within minutes with reversibility. LITEs can be packaged into viral vectors and genetically targeted to probe specific cell populations. We have applied this system in primary mouse neurons, as well as in the brain of freely behaving mice in vivo to mediate reversible modulation of mammalian endogenous gene expression as well as targeted epigenetic chromatin modifications. The LITE system establishes a novel mode of optogenetic control of endogenous cellular processes and enables direct testing of the causal roles of genetic and epigenetic regulation in normal biological processes and disease states.
MIT Department
Massachusetts Institute of Technology. Department of Biological Engineering
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
McGovern Institute for Brain Research at MIT
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DOI of Published Version
https://doi.org/10.1038/nature12466
