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Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers
Published on: September 20, 2018
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Fine-Tuning the Epigenetic Landscape: Chemical Modulation of Epigenome Editors
Gemma Noviello1,2, Rutger A F Gjaltema3
1Epigenetics & Neurobiology Unit, European Molecular Biology Laboratory (EMBL), Rome, Italy.
Methods in Molecular Biology (Clifton, N.J.)
|July 16, 2024
Summary
Temporal control systems for epigenome editing (epi-editors) using dCas9 technology have been developed. These systems enhance precision and reduce off-target effects by allowing researchers to switch epi-editors on and off as needed.
Area of Science:
- Molecular Biology
- Epigenetics
- Gene Regulation
Background:
- Epigenome editing utilizes designer DNA-binding domains fused with effector domains (epi-editors) for targeted chromatin and transcriptional modification.
- Constitutive expression of dCas9-based epi-editors leads to challenges like off-target activity and limited temporal resolution.
- Recent advancements aim to overcome these limitations through innovative switch systems.
Purpose of the Study:
- To review the current state of dCas9-based epi-editors with temporal control systems.
- To discuss the advantages and limitations of these cutting-edge technologies.
- To provide context for understanding the capabilities of temporally controlled epigenome editing.
Main Methods:
- Review of recent literature on dCas9-based epi-editors with temporal control.
- Analysis of innovative switch systems enabling temporal modulation of epi-editor activity.
- Discussion of novel dCas9 effectors regulated by exogenous chemical signals.
Main Results:
- Development of switch systems for temporal control of dCas9-based epi-editors.
- Introduction of systems allowing precise, time-dependent gene expression modulation.
- Enabled deactivation of epi-editors to mitigate prolonged off-target effects.
- Revolutionized temporal control through dCas9 effectors responsive to exogenous chemical signals.
Conclusions:
- Temporally controlled epigenome editing significantly enhances precision and reduces off-target effects.
- Novel switch systems and chemically regulated dCas9 effectors expand the researcher's toolbox.
- These advancements offer greater control over gene expression for research and therapeutic applications.
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