Changes of cell adhesion and extracellular matrix (ECM) components in cervical intraepithelial neoplasia

Cell-cell and cell-extracellular matrix interaction is crucial in tumor progression. Tight junction (TJ) proteins as occludin and claudins (CLDNs) play important role in this process together with several extracellular matrix components, as syndecan. Our previous work suggested significant changes i...

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Veröffentlicht in:Pathology oncology research 2005-01, Vol.11 (1), p.26-31
Hauptverfasser: Sobel, Gábor, Szabó, István, Páska, Csilla, Kiss, András, Kovalszky, Ilona, Kádár, Anna, Paulin, Ferenc, Schaff, Zsuzsa
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container_title Pathology oncology research
container_volume 11
creator Sobel, Gábor
Szabó, István
Páska, Csilla
Kiss, András
Kovalszky, Ilona
Kádár, Anna
Paulin, Ferenc
Schaff, Zsuzsa
description Cell-cell and cell-extracellular matrix interaction is crucial in tumor progression. Tight junction (TJ) proteins as occludin and claudins (CLDNs) play important role in this process together with several extracellular matrix components, as syndecan. Our previous work suggested significant changes in the expression of claudins even in the early stages of cervical carcinogenesis. The aim of our present work was to study the expression of occludin and syndecan-1, as compared to CLDNs, in early phases of cervical carcinogenesis. Paraffin sections of 50 samples were studied by immunohistochemistry, including cervical intraepithelial neoplasias (CINI-II-III), in situ carcinomas (CIS) and normal cervical samples. Occludin and CLDN-2 were found colocalized in the basal layer, while syndecan-1 and CLDN-1, -4 and -7 were coexpressed in the parabasal and intermedier layers in normal epithelia. Intensity of occludin staining decreased in CIN/CIS lesions, although it was more extended towards the upper epithelial layers with inverse relation with grades, as seen in the case of CLDN-2 expression. CLDN-1, -2, -4 and -7 were detected in the entire epithelium in CIN, showing decrease in CIS. The progression of CIN was associated with reduced syndecan-1 expression, in contrast to CLDN-1, -4 and -7 which increased toward CIS. The obtained data suggest that significant changes occur in the composition of cell adhesion complexes even in early stages of cervical carcinogenesis. The pattern of expression is characteristic for the alteration, the changes in the different components, however, are not parallel with each other.
doi_str_mv 10.1007/bf03032402
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subjects Biomarkers, Tumor - metabolism
Carcinogenesis
Carcinoma in Situ - metabolism
Carcinoma in Situ - pathology
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - pathology
Cell Adhesion
Cell adhesion & migration
Cells
Cervical carcinoma
Cervical Intraepithelial Neoplasia - metabolism
Cervical Intraepithelial Neoplasia - pathology
Cervix Uteri - metabolism
Cervix Uteri - pathology
Claudin-1
Claudin-4
Claudins
Epithelial Cells - metabolism
Epithelium
Extracellular matrix
Extracellular Matrix - metabolism
Extracellular Matrix - pathology
Female
Humans
Immunoenzyme Techniques
Immunohistochemistry
Medical research
Membrane Glycoproteins - metabolism
Membrane Proteins - metabolism
Neoplasm Staging
Occludin
Oncology
Paraffin
Pathology
Proteoglycans - metabolism
Syndecan
Syndecan-1
Syndecans
Uterine Cervical Neoplasms - metabolism
Uterine Cervical Neoplasms - pathology
title Changes of cell adhesion and extracellular matrix (ECM) components in cervical intraepithelial neoplasia
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