Pol II degradation activates cell death independently from the loss of transcription
2024
Pol II degradation activates cell death independently from the loss of transcription
publication
Author Information
Author(s): Harper Nicholas W., Birdsall Gavin A., Honeywell Megan E., Pai Athma A, Lee Michael J
Primary Institution: Cold Spring Harbor Laboratory
Hypothesis
Is the loss of Pol II protein responsible for cell death rather than the loss of transcription?
Conclusion
The study reveals that cell death occurs due to the loss of Pol II protein, not due to dysregulated gene expression.
Supporting Evidence
- Loss of Pol II activates apoptosis.
- A transcriptionally inactive version of Rpb1 can rescue cell viability.
- The study identifies a mechanism called PDAR that regulates lethality after Pol II loss.
- Clinically used drugs were found to be effective through a PDAR-dependent mechanism.
Takeaway
When a specific protein called Pol II is lost, cells can die, but it's not because they stop making other proteins; it's because of the loss of Pol II itself.
Methodology
Functional genomics were used to identify mechanisms regulating cell death following loss of Pol II.
Digital Object Identifier (DOI)
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