Differential Expression of TFIIIB Subunits in Cancer Cells
Author Information
Author(s): Cabarcas Stephanie, Jacob Joby, Veras Ingrid, Schramm Laura
Primary Institution: St. John's University
Hypothesis
Deregulation of RNA polymerase III transcription in cancer may be a consequence of altered TFIIIB expression.
Conclusion
Deregulation of TFIIIB-mediated transcription may be an important step in tumor development.
Supporting Evidence
- Brf1 and Brf2 mRNA are differentially expressed in a variety of cancer cells.
- The Brf2 promoter is more active than the Brf1 promoter in all cell lines tested.
- VAI transcription was significantly higher than U6 snRNA transcription in all cancer cell lines tested.
Takeaway
This study found that two important proteins, Brf1 and Brf2, behave differently in cancer cells, which might affect how these cells grow.
Methodology
The study used RT-PCR to analyze mRNA levels and luciferase assays to compare promoter activities in various cancer cell lines.
Limitations
The study cannot rule out the possibility that observed differences in promoter activity are due to missing enhancer sequences.
Participant Demographics
The study involved various cancer cell lines including cervical, breast, and prostate cancer cells.
Digital Object Identifier (DOI)
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