title: Tumor-associated antigen 22-1-1 expression in the uterine cervical squamous neoplasias.
abstract: We have reported that a novel tumor-associated antigen (Ag), 22-1-1, was expressed in cancer cells derived mainly from the uterus and ovary [K. Sonoda et al., Cancer (Phila.), 77: 1501-1509, 1996]. The 22-1-1 Ag existed not only in adenocarcinomas but also in squamous cell carcinomas in the uterine cervix. Here, a relationship between tumor progression and invasion and 22-1-1 Ag expression was investigated in squamous cell neoplasms of the uterine cervix using immunohistochemical staining. The 22-1-1 Ag was not detected in normal uterine cervix (0 of 10 total cases) and dysplasias (0 of 47 total cases). However, 20% of carcinoma in situ (4 of 20 total cases) and 16.7% of microinvasive carcinomas (2 of 12 total cases) stained positively for 22-1-1 Ag. Moreover, areas depicting microinvasion on histology in uterine cancers (stage Ia) were more strongly stained than carcinoma in situ lesions. 22-1-1 Ag expression was found to be more frequent in invasive squamous cell carcinomas (82.6%; 57 of 69 total cases). The 22-1-1 Ag existed both in the cytoplasm and on the membrane of cancer cells. These findings suggest that 22-1-1 Ag expression might be related to tumor cell progression and invasion in the uterine cervical squamous cell epithelium.
authors.affiliation: Department of Gynecology and Obstetrics, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sonoda
authors.forename: T
authors.initials: T
authors.lastname: Kaku
authors.forename: T
authors.initials: T
authors.lastname: Kamura
authors.forename: M
authors.initials: M
authors.lastname: Nakashima
authors.forename: T
authors.initials: T
authors.lastname: Watanabe
authors.forename: H
authors.initials: H
authors.lastname: Nakano
mesh_terms: D000911:Antibodies, Monoclonal; D000951:Antigens, Neoplasm / Q000032:analysis*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002462:Cell Membrane / Q000473:pathology; D002584:Cervix Uteri / Q000166:cytology* / Q000473:pathology; D003593:Cytoplasm / Q000473:pathology; D018450:Disease Progression; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D002578:Uterine Cervical Dysplasia / Q000473:pathology*; D002583:Uterine Cervical Neoplasms / Q000473:pathology*
chemical_list: C099099:22-1-1 antigen; D000911:Antibodies, Monoclonal; D000951:Antigens, Neoplasm