alexa Abnormal distribution of E-cadherin and beta-catenin in different histologic types of cancer of the uterine cervix.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): RodrguezSastre MA, GonzlezMaya L, Delgado R, Lizano M, Tsubaki G,

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Abstract OBJECTIVE: The goal of this study was to analyze the cellular distribution and possible alterations of beta-catenin and E-cadherin proteins in different histologic types of uterine cervical cancer and precursor lesions, compared to normal controls. METHODS: We performed an immunochemical staining analysis of the cellular distribution of beta-catenin and E-cadherin proteins in biopsy samples from 20 normal exocervical squamous epithelium, 43 premalignant lesions, and a large series of 126 invasive tumors of different histologic types that included 68 squamous carcinomas, 31 adenosquamous carcinomas, and 27 adenocarcinomas. Statistical significance was evaluated by the chi-square or Fisher's Exact test. RESULTS: We observed beta-catenin abnormally distributed in the cytoplasm of 62\% of premalignant lesions and more than 70\% of invasive cancers, statistically significant when compared with normal tissue (P < 0.05). Similarly, we found that E-cadherin exhibit a significant abnormal distribution in the cytoplasm of 58\% of premalignant lesions (P < 0.05) and in more than 71\% of squamous carcinoma and adenosquamous carcinoma when compared with normal tissue (P < 0.05). We found no differences in the distribution of E-cadherin between adenocarcinomas compared with control samples. Interestingly, we found that both, beta-catenin and E-cadherin, were absent in the membrane of nearly 40\% premalignant lesions. Nuclear staining of beta-catenin was rarely seen in any cases, contrary to what has been reported for this and other neoplasias. CONCLUSION: Our findings indicate that cellular alterations of both beta-catenin and E-cadherin are frequent in tumors of the uterine cervix of different histologic types, and support a role for these proteins in cervical cancer development. This article was published in Gynecol Oncol and referenced in Journal of Genetic Syndromes & Gene Therapy

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