RNA polymerase II at histone genes predicts outcome in human cancer
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View abstract on PubMed
Summary
This summary is machine-generated.Genome-wide hypertranscription, marked by elevated RNA polymerase II (RNAPII), is common in cancer. This study reveals RNAPII elevations in tumors, linking histone gene hypertranscription to cancer progression and aneuploidy.
Area Of Science
- Oncology
- Molecular Biology
- Genomics
Background
- Genome-wide hypertranscription is prevalent in human cancers and associated with poor prognosis.
- Understanding the mechanisms driving cancer hypertranscription is crucial for developing targeted therapies.
Purpose Of The Study
- To investigate the role of RNA polymerase II (RNAPII) genome-wide in formalin-fixed paraffin-embedded (FFPE) tumor samples.
- To explore the link between RNAPII elevations, histone gene expression, and cancer progression.
Main Methods
- Application of a novel FFPE-cleavage under targeted accessible chromatin method for genome-wide RNAPII mapping.
- Analysis of RNAPII occupancy in mouse gliomas and human tumor samples, including meningiomas and breast cancers.
Main Results
- Demonstrated global and regional RNAPII elevations in various cancer types.
- Identified correlations between RNAPII occupancy at histone genes, tumor grade, recurrence, and chromosomal abnormalities.
- Observed regional RNAPII elevations linked to HER2 amplifications.
Conclusions
- Elevated RNAPII at histone genes suggests histone production is rate-limiting for S-phase progression in cancer.
- Histone gene hypertranscription may drive cancer overproliferation and aneuploidy.
- Findings have implications for precision oncology strategies targeting cancer hypertranscription.
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