Eag1 potassium channels as markers of cervical dysplasia
| Autor: | Ricardo Aguilar-Guadarrama, Daniel Montante-Montes, Milena Saqui-Salces, Javier Camacho, María Del Rosario Solís-Pancoatl, Luz María Hinojosa, Elisabeth Hernández-Gallegos, Braulio Martínez-Benítez, Luis A. Pardo, Cindy Sharon Ortiz, Ana Bertha Rivera‑Ramírez, Patricio Gariglio, Enrique García-Villa, Walter Stühmer, Armando Gamboa-Domínguez |
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| Rok vydání: | 2011 |
| Předmět: |
Cancer Research
Pathology medicine.medical_specialty Gene Expression Uterine Cervical Neoplasms Biology Lesion Cell Line Tumor Cytology Biomarkers Tumor medicine Humans Early Detection of Cancer Cervical cancer Oncogene Cancer General Medicine Cell cycle Uterine Cervical Dysplasia medicine.disease Molecular medicine Ether-A-Go-Go Potassium Channels Oncology Dysplasia Female Neoplasm Grading medicine.symptom |
| Zdroj: | Oncology Reports. |
| ISSN: | 1791-2431 1021-335X |
| Popis: | Human ether à-go-go 1 (Eag1) potassium channels are potential tumor markers and therapeutic targets for several types of malignancies, including cervical cancer. Estrogens and human papilloma virus oncogenes regulate Eag1 gene expression, suggesting that Eag1 may already be present in pre-malignant lesions. Therefore, Eag1 could be used as an early marker and/or a potential risk indicator for cervical cancer. Consequently, we studied Eag1 protein expression by immunochemistry in cervical cancer cell lines, normal keratinocytes, cervical cytologies from intraepithelial lesions, biopsies from cervical intraepithelial neoplasias (CIN 1, 2 and 3) and in normal smears from patients taking or not taking estrogens. Two hundred and eighty-six samples obtained by liquid-based cytology and fifteen CIN biopsies were studied. We observed Eag1 protein expression in the cervical cancer cell lines, as opposed to normal keratinocytes. Eag1 was found in 67% of the cervical cytologies from low-grade intra-epithelial lesions and in 92% of the samples from high-grade intraepithelial lesions, but only in 27% of the normal samples. Noteworthy, morphologically normal cells obtained from dysplastic samples also exhibited Eag1 expression. In CIN biopsies we found that the higher the grade of the lesion, the broader the Eag1 protein distribution. Almost 50% of the normal patients taking estrogens displayed Eag1 expression. We suggest Eag1 as a potential marker of cervical dysplasia and a risk indicator for developing cervical lesions in patients taking estrogens. Eag1 detection in cervical cancer screening programs should help to improve early diagnosis and decrease mortality rates from this disease. |
| Databáze: | OpenAIRE |
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