Coexpression of adult T-cell leukemia-derived factor, a human thioredoxin homologue, and human papillomavirus DNA in neoplastic cervical squamous epithelium
Open Access
- 1 October 1991
- Vol. 68 (7), 1583-1591
- https://doi.org/10.1002/1097-0142(19911001)68:7<1583::aid-cncr2820680720>3.0.co;2-n
Abstract
Adult T‐cell leukemia‐derived factor (ADF) is an autocrine interleukin‐2 receptor‐inducing factor produced by human T‐lymphotropic virus‐1 (HTLV‐1)‐transformed lymphocytes, which has a high structural homology with an endogenous dithiol reducing coenzyme, thioredoxin. Its localization was investigated immunohistochemically in the cervix, using normal tissue (27 samples) and squamous neoplastic tissue (three condylomas, 42 cervical intraepithelial neoplasia [CIN] samples, 34 invasive squamous cell carcinoma samples). The expression of human papillomavirus (HPV) DNA was also studied in serial sections of the same subjects. Normal squamous cells and glandular cells of the cervix were negative for ADF. However, intracytoplasmic and/or intranuclear ADF‐positive cells were usually found in the intermediate and superficial layers of the neoplastic squamous epithelium of condylomas (three of three cases) and CIN (35/42 cases). HPV DNA was detected in all condylomas and in 27 of 42 CIN specimens. HPV DNA‐positive cells were usually localized in the intermediate and superficial layers of the neoplastic squamous epithelium. These HPV DNA‐positive cells were also positive for ADF. Invasive squamous cell carcinoma was also positive for ADF (24/34 cases) and HPV DNA (11/34 cases). The coexpression of HPV DNA and ADF was observed in all HPV DNA‐positive cases. Coexistence of HPV DNA and ADF immunopositivity in neoplastic squamous cells of the cervix suggests that ADF expression closely reflects the intracellular event on HPV DNA replication.Keywords
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