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- Title
RNA from brush oral cytology to measure squamous cell carcinoma gene expression.
- Authors
Schwartz, Joel L.; Panda, Suchismita; Beam, Craig; Bach, Laura E.; Adami, Guy R.
- Abstract
Background: RNA expression analysis of oral keratinocytes can be used to detect early stages of disease such as oral cancer or to monitor on-going treatment responses of the same or other oral diseases. A limitation is the inability to obtain high quality RNA from oral tissue without using biopsies. While oral cytology cell samples can be obtained from patients in a minimally invasive manner they have not been validated for quantitative analysis of RNA expression. Methods: As a starting point in the analysis of tumor markers in oral squamous cell carcinoma (OSCC), we examined RNA in brush cytology samples from hamsters treated with dibenzo[a,l]pyrene to induce oral carcinoma. Three separate samples from each animal were assessed for expression of candidate marker genes and control genes measured with real-time RT-PCR. Results: Brush oral cytology samples from normal mucosa were shown to consist almost exclusively of epithelial cells. Remarkably, ß-2 microglobulin and cytochrome p450, 1B1 (CYP1B1) RNA showed potential utility as markers of OSCC in samples obtained in this rapid and non-surgical manner. Conclusion: Brush oral cytology may prove useful as a source of RNA for gene expression analysis during the progression of diseases of the oral epithelium such as OSCC.
- Subjects
RNA; CYTOLOGY; KERATINOCYTES; ORAL diseases; TISSUES; ORAL mucosa
- Publication
Journal of Oral Pathology & Medicine, 2008, Vol 37, Issue 2, p70
- ISSN
0904-2512
- Publication type
Article
- DOI
10.1111/j.1600-0714.2007.00596.x