Loss of cytokeratin 14 expression is related to human papillomavirus type and lesion grade in squamous intraepithelial lesions of the cervix
| Autor: | Shirley A. Southern, C. Simon Herrington, I.W. McDicken |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Pathology
medicine.medical_specialty Cyclin A Uterine Cervical Neoplasms Biology Polymerase Chain Reaction Pathology and Forensic Medicine Immunoenzyme Techniques Lesion Cytokeratin medicine Humans Protein Precursors Papillomaviridae Cervix Involucrin In Situ Hybridization Intraepithelial neoplasia Papillomavirus Infections Keratin-14 Uterine Cervical Dysplasia medicine.disease Transcription Factor AP-1 Tumor Virus Infections Squamous intraepithelial lesion medicine.anatomical_structure Epidermoid carcinoma DNA Viral biology.protein Keratins Female medicine.symptom |
| Zdroj: | Human Pathology. 32:1351-1355 |
| ISSN: | 0046-8177 |
| Popis: | In a recent study of low-grade cervical squamous intraepithelial lesions (SILs), we reported that infection with both low- and high-risk human papillomaviruses (HPVs) upregulated cyclin A, B, E, and Ki67 expression in basal and suprabasal cells. In view of the intricate link between cell cycle exit, proliferation, and differentiation, we examined the morphologic distribution of cytokeratins 13 and 14 and involucrin expression in 49 low-grade SILs infected with HPV types 6, 11, 16, 18, 31, 33, 39, 42, 43, 44, 45, 51, 52, 56, 58, and 66; 2 lesions contained both low- and high-risk HPVs. The findings were compared with 30 high-grade SILs infected with HPV types 16, 31, 33, 51, 58, 66, and 67; 3 of these were infected with 2 different HPVs. In low-grade lesions, the differentiation markers were expressed normally, showing that differentiation proceeds despite upregulation of cell cycle--associated proteins. Loss of involucrin (3 of 33) and cytokeratin 13 (8 of 33) expression occurred only in the high-grade lesions and was therefore related to lesion grade. Loss of cytokeratin 14 expression was also significantly more frequent in high-grade than in low-grade lesions (19 of 33 v 12 of 51; P.01). In addition, cytokeratin 14 expression was significantly less frequent in the intermediate and superficial layers of low-grade SILs infected with high-risk HPVs than in those infected with low-risk HPVs (3 of 27 v 14 of 24; P.001). These findings are consistent with in vitro data and suggest that abnormalities of both cell cycle control and squamous differentiation are important in HPV-associated neoplastic transformation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect