title: Expression of caveolin-1 in tongue squamous cell carcinoma by quantum dots.
abstract: Quantum dots (QDs) are a new class of fluorescent probes to detect biomarker expression. The role of caveolin-1 (Cav-1) in tongue squamous cell carcinoma (TSCC) is still unknown. This study aimed to investigate the expression profile of Cav-1 in carcinogenesis and development of TSCC by QDs immunofluorescence histochemistry (QDs-IHC) and discuss the relationship between the Cav-1 expression and the clinicopathological outcomes. QDs-IHC was used to detect Cav-1 expression in tissue microarrays including normal tongue mucosa (NTM; n=10), hyperplastic tongue mucosa (HTM; n=10), tongue pre-cancer lesions (TPL; n=15) and primary tongue squamous cell carcinoma (PTSCC; n=61). Correlations between the Cav-1 expression and clinicopathologic variables were evaluated statistically. Cells positive for Cav-1 were clearly detected and bright images were obtained in a fine, granular pattern at the cell membrane and cytoplasm using QDs-IHC. The rate of Cav-1 immunoreactivity increased progressively from NTM (0%), HTM (0%), TPL (36%) to PTSCC (74%). When compared with each other, there was statistical significance among PTSCC, TPL and NTM as well as among PTSCC, TPL and HTM. Moreover, Cav-1 expression level in PTSCC was correlated positively with clinical stage and histologic grade. QDs-IHC could accurately detect protein location in tongue mucosa. An increased expression of Cav-1 in the stepwise carcinogenesis from NTM, HTM, TPL to PTSCC suggested that Cav-1 might be an oncogene in the development of tongue squamous cell carcinoma.
authors.affiliation: Department of Pathology, School of Basic Medical Science, Wuhan University, Wuhan, China.
authors.forename: J
authors.initials: J
authors.lastname: Xue
authors.forename: H
authors.initials: H
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Diao
authors.forename: X
authors.initials: X
authors.lastname: Chen
authors.forename: D
authors.initials: D
authors.lastname: Xia
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D051242:Caveolin 1 / Q000032:analysis / Q000235:genetics / Q000378:metabolism*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D045663:Quantum Dots; D046888:Tissue Array Analysis; D014062:Tongue Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology
chemical_list: C495540:CAV1 protein, human; D051242:Caveolin 1