High-Level Expression of Wild-Type p53 in Melanoma Cells
Author Information
Author(s): Roland Houben, Sonja Hesbacher, Corinna P. Schmid, Claudia S. Kauczok, Ulrike Flohr, Sebastian Haferkamp, Cornelia S. L. Müller, David Schrama, Jörg Wischhusen, Jürgen C. Becker
Primary Institution: Department of Dermatology, University Hospital Würzburg
Hypothesis
Is the high expression of wild-type p53 in melanoma cells associated with its inactivity in p53 reporter gene assays?
Conclusion
High levels of wild-type p53 in melanoma cells are often inactive at the transcriptional level.
Supporting Evidence
- High levels of p53 were found in the majority of melanoma samples analyzed.
- Only one mutation was detected in the p53 gene among the samples.
- Transcriptional inactivity of wild-type p53 was observed in 6 out of 10 melanoma cell lines.
Takeaway
This study found that even though melanoma cells have a lot of a protein called p53, it often doesn't work properly to stop cancer.
Methodology
Immunohistochemical analysis and sequencing of p53 exons in melanoma samples and cell lines.
Limitations
Some samples did not have all p53 exons amplified, which may affect the completeness of mutation analysis.
Participant Demographics
Melanoma patients from whom tumor samples were obtained.
Digital Object Identifier (DOI)
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