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In vivo Application of the REMOTE-control System for the Manipulation of Endogenous Gene Expression
Published on: March 29, 2019
One-two punch mechanism of gene repression: a fresh perspective on gene regulation
1Department of Molecular and Cell Biology, Barker Hall, University of California, Berkeley, CA, 94720, USA.
Abstract:
Cellular differentiation depends on temporally controlled waves of gene activation and inactivation that ultimately transform one cell type into another. It is well established that transcription factor cascades coordinate the timely activation of gene expression clusters during development. In comparison, much less is understood about how gene repression events are coordinated with the transcription factor-driven waves of gene activation and how this repression is achieved at a mechanistic level. Using budding yeast as a model, we recently discovered a new gene regulatory event, whereby a central meiotic transcription factor induces the expression of an mRNA isoform to repress gene expression through an integrated transcriptional and translational mechanism. This new model could explain how gene activation and inactivation waves can be temporally coordinated. In this review, we discuss our findings and their potential implications.
Insights
Scientists discovered a new gene regulation mechanism in yeast. A transcription factor creates an mRNA isoform that represses gene expression, coordinating gene activation and inactivation waves during cellular differentiation.
Area of Science:
- Molecular Biology
- Cellular Differentiation
- Gene Regulation
Background:
- Cellular differentiation involves precise gene activation and inactivation timing.
- Transcription factors orchestrate gene activation waves during development.
- Mechanisms coordinating gene repression with activation remain poorly understood.
Purpose of the Study:
- To investigate the coordination of gene repression with transcription factor-driven gene activation.
- To elucidate the mechanistic basis of gene repression during cellular differentiation.
Main Methods:
- Utilized budding yeast as a model organism.
- Investigated a novel gene regulatory event involving mRNA isoforms.
- Examined integrated transcriptional and translational regulatory mechanisms.
Main Results:
- Discovered a central meiotic transcription factor induces an mRNA isoform.
- This mRNA isoform represses gene expression via a combined transcriptional and translational mechanism.
- Proposed a new model for coordinating gene activation and inactivation waves.
Conclusions:
- A novel mechanism for gene repression coordinated with gene activation has been identified.
- This finding provides insights into the temporal control of gene expression during cellular differentiation.
- The discovered mechanism offers a potential explanation for coordinated gene activation and inactivation waves.
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