Dual-role transcription factors stabilize intermediate expression levels.
Jinnan He1, Xiangru Huo1, Gaofeng Pei2
1The IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Bioinformatics, State Key Lab of Molecular Oncology, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, China; School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China.
Cell
|April 17, 2024
Summary
Researchers discovered dual-action transcription factors (TFs) that regulate gene expression. These TFs stabilize intermediate expression levels by reducing high expression and increasing low expression, offering new avenues for gene control.
Area of Science:
- Molecular Biology
- Gene Regulation
- Cellular Dynamics
Background:
- Precise control of gene expression is crucial for cellular function.
- Mechanisms maintaining intermediate gene expression levels remain poorly understood.
Purpose of the Study:
- To investigate the molecular mechanisms underlying the precise maintenance of gene expression levels, particularly at intermediate ranges.
- To identify novel classes of transcription factors involved in gene expression regulation.
Main Methods:
- Development and application of novel sequencing, imaging, and functional assays.
- Characterization of transcription factor domains responsible for regulatory functions.
- Analysis of clinically relevant mutations affecting transcription factor activity.
Main Results:
- Discovery of a class of dual-action transcription factors (TFs) that act as both activators and repressors.
- These TFs form condensates to selectively compartmentalize transcriptional units, achieving stable intermediate expression levels.
- Mutations in TF condensate-forming domains disrupt selectivity and dual-action activity, linking them to developmental disorders.
Conclusions:
- Dual-action TFs play a critical role in establishing and maintaining precise gene expression levels.
- Condensate formation by TFs is essential for their dual regulatory functions and selectivity.
- Understanding these TFs offers potential for engineering controlled gene expression and insights into developmental disorders.
Keywords:
CRISPR gene modulationbiomolecular condensatecondensate occupancy sequencingcondensate selectivitydevelopmental programdual transcriptional regulationintrinsically disordered regionsnoise reductionprimed expressionstablized expression variationMore Related Videos
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