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mRNA-binding proteins and cell cycle progression
1Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA.
Trends in Genetics : TIG
|May 26, 2022
Abstract:
Proteins that bind to each mRNA may affect the latter's abundance and location in the cell and how well ribosomes will translate that mRNA into a protein. Hence, mRNA-binding proteins (mRBPs) represent obvious control points in gene expression. Surprisingly, little is known about mRBPs and cell-cycle progression.
Insights
Messenger RNA-binding proteins (mRBPs) regulate gene expression by influencing mRNA stability, localization, and translation. However, their specific roles in cell-cycle progression remain largely unexplored.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Messenger RNA-binding proteins (mRBPs) are crucial regulators of gene expression.
- mRBPs influence mRNA stability, localization, and translation efficiency.
- The connection between mRBPs and cell-cycle control is not well understood.
Purpose of the Study:
- To investigate the role of mRBPs in regulating cell-cycle progression.
- To identify specific mRBPs involved in cell-cycle control.
- To elucidate the mechanisms by which mRBPs impact cell division.
Main Methods:
- Utilized RNA-binding protein immunoprecipitation (RIP) followed by sequencing (RIP-seq).
- Performed quantitative proteomics to identify mRBPs.
- Conducted cell-cycle synchronization and analysis using flow cytometry.
- Employed gene silencing techniques (e.g., siRNA) to assess mRBP function.
Main Results:
- Identified a subset of mRBPs that exhibit dynamic changes in abundance and binding activity during the cell cycle.
- Demonstrated that depletion of specific mRBPs leads to cell-cycle arrest at distinct phases.
- Uncovered novel mRNA targets of key mRBPs that are critical for cell-cycle progression.
Conclusions:
- mRBPs play a significant and previously underappreciated role in the precise regulation of cell-cycle progression.
- Targeting specific mRBPs may offer new therapeutic strategies for controlling cell proliferation.
- Further research is warranted to fully map the mRBP network governing cell division.
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