title: hTR RNA component as a marker of cellular proliferation in oral lichen planus.
abstract: Previously, we have shown that the telomerase RNA component hTR is highly expressed in the epithelium of non-dysplastic Oral Lichen Planus (OLP) lesions (11). We concluded that it is possible that this high expression might be related to the increased cellular proliferation seen in OLP rather than being an indicator of potential malignant transformation. In the present study, and in order to confirm our finding in the previous study that hTR might be a marker for cellular proliferation in OLP, we analysed OLP biopsies known to be positive for RNA component of Telomerase (hTR) for the expression of Ki-67 as a marker for cellular proliferation. Fourteen OLP tissue biopsies known to be positive for telomerase RNA component hTR, were investigated using an immunohistochemical approach to determine the rate of cellular proliferation in OLP, looking at the expression of Ki-67 protein as a marker for cellular proliferation. A statistically significant increase was found between Ki-67 expression in OLP in comparison to normal control buccal mucosa samples. The expression of hTR component in OLP might thus be a marker for cellular proliferation.
authors: Molecular Oncology Laboratory, Beaumont Hospital and The Royal College of Surgeons, Ireland.
authors: Cathal O
authors: CO
authors: Flatharta
authors: Stephen
authors: S
authors: Flint
authors: Mary
authors: M
authors: Toner
authors: Mohamed
authors: M
authors: Mabruk
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000235:genetics* / Q000378:metabolism; D049109:Cell Proliferation; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D017403:In Situ Hybridization; D019394:Ki-67 Antigen / Q000235:genetics; D017676:Lichen Planus, Oral / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000378:metabolism / Q000473:pathology; D012313:RNA; D015347:RNA Probes; D062085:RNA, Long Noncoding; D022661:RNA, Untranslated / Q000235:genetics* / Q000378:metabolism; D019098:Telomerase / Q000235:genetics* / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; D019394:Ki-67 Antigen; D015347:RNA Probes; D062085:RNA, Long Noncoding; D022661:RNA, Untranslated; C422952:telomerase RNA; D012313:RNA; D019098:Telomerase