European journal of gynaecological oncology · 2015
The role of mTOR signaling pathway in premalignant and malignant cervical lesions.
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Andrikopoulou M, Salakos N, Deligeoroglou E, Pafiti A, Boutas I, Nikitakis N, Sklavounou A, Creatsas G
Аннотация
PURPOSE OF THE STUDY: Aberrant activation of the Akt/mTOR/pS6 signaling pathway has been identified in various types of cancer and is under investigation in cervical cancer. The purpose of this study was to assess the expression of the phosphorylated/activated forms of Akt (upstream molecule), 4E-BP1 and pS6 (downstream molecules) in biopsy samples of cervical low grade squamous intraepithelial lesions (LSIL), high grade squamous intraepithelial lesions (HSIL), and squamous cell carcinoma (Ca) compared to normal cervical epithelium.
MATERIAL AND METHODS: The study included 38 cases diagnosed as LSIL, 31 cases as HSIL, 29 cases as Ca, and eight control cases from normal cervix. Immunohistochemistry was used to assess the expression of pAkt, p4E-BP1 and pS6.
RESULTS: Statistical analysis revealed significant differences between HSIL and Ca groups compared to controls regarding intensity, positivity, and total scores for all three molecules (p < 0.001). A trend for higher expression with increasing grade of dysplasia was demonstrated.
CONCLUSION: These results strongly support the view that the mTOR signaling pathway is involved in cervical carcinogenesis.
MATERIAL AND METHODS: The study included 38 cases diagnosed as LSIL, 31 cases as HSIL, 29 cases as Ca, and eight control cases from normal cervix. Immunohistochemistry was used to assess the expression of pAkt, p4E-BP1 and pS6.
RESULTS: Statistical analysis revealed significant differences between HSIL and Ca groups compared to controls regarding intensity, positivity, and total scores for all three molecules (p < 0.001). A trend for higher expression with increasing grade of dysplasia was demonstrated.
CONCLUSION: These results strongly support the view that the mTOR signaling pathway is involved in cervical carcinogenesis.
Предметные рубрики MeSH
Adaptor Proteins, Signal TransducingCarcinoma, Squamous CellCell Cycle ProteinsFemaleHumansPhosphoproteinsPhosphorylationPrecancerous ConditionsProto-Oncogene Proteins c-aktRibosomal Protein S6 KinasesSignal TransductionTOR Serine-Threonine KinasesUterine Cervical NeoplasmsUterine Cervical Dysplasia