title: Association between sialyl Lewis(a) expression and tumor progression in melanoma.
abstract: Twenty-three primary and 27 metastatic melanoma lesions and 17 pigmented nevi lesions were tested utilizing the immunoperoxidase reaction with anti-sialyl Lewis(a) (sLea) and anti-sLex mAbs.sLea was expressed in 9, 25, and 5 and sLex was expressed in 6, 11, and 2 of these lesions, respectively. Expression of sLea in melanocytic tumors is associated with tumor progression. Serum levels of sLea and sLex were analyzed by a sandwich assay using mAbs in 25 melanoma patients. Only 2 patients at stage 4 showed higher levels of sLea and sLex than did normal control subjects. Moreover, sLea and sLex were expressed in 1 and 2 of 5 human melanoma cell lines, respectively, and expression of sLex and sLex was not modulated by cytokines. These findings suggest that the expression of sLea in melanocytic tumors is correlated with disease progression.
authors.affiliation: Department of Dermatology, Kumamoto University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kageshita
authors.forename: S
authors.initials: S
authors.lastname: Hirai
authors.forename: T
authors.initials: T
authors.lastname: Kimura
authors.forename: N
authors.initials: N
authors.lastname: Hanai
authors.forename: S
authors.initials: S
authors.lastname: Ohta
authors.forename: T
authors.initials: T
authors.lastname: Ono
mesh_terms: D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis / Q000096:biosynthesis*; D018395:CA-19-9 Antigen; D002460:Cell Line; D005732:Gangliosides / Q000032:analysis / Q000096:biosynthesis*; D006801:Humans; D007124:Immunoenzyme Techniques; D008544:Melanocytes / Q000473:pathology; D008545:Melanoma / Q000276:immunology* / Q000473:pathology* / Q000601:surgery; D009362:Neoplasm Metastasis; D009508:Nevus, Pigmented / Q000276:immunology / Q000473:pathology / Q000601:surgery; D012878:Skin Neoplasms / Q000276:immunology* / Q000473:pathology* / Q000601:surgery; D014407:Tumor Cells, Cultured
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate; D018395:CA-19-9 Antigen; D005732:Gangliosides; C064564:sialyl Le(a) ganglioside