title: Expression of sialosyl-Tn in intestinal type cancer cells of human gastric cancers.
abstract: A sample of 219 primary stomach cancers, 143 advanced cancers and 76 early cancers were examined for mucin histochemical staining (the paradoxical concanavalin A method, the galactose oxidase-Schiff [GOS] reaction, and the sialidase-GOS reaction) and immunohistochemical reactivity (pepsinogen [Pg] I, Pg II, SH-9 and TKH-2). Gastric cancer cells were clearly classified according to mucin histochemistry into a gastric type, including mucus neck cell, pyloric gland cell and surface mucus cell types, and an intestinal type, including goblet-cell, and intestinal absorptive cell types. TKH-2 monoclonal antibody, which recognizes the mucin-associated sialosyl-Tn antigen, reacted with the mucin of goblet cells in both the normal small intestine and in the intestinal metaplasia of the stomach. Sixty-five of 106 (61%) differentiated adenocarcinomas and 76 of 113 (67%) undifferentiated adenocarcinomas had over 10% of their cancer cells positive for TKH-2. The TKH-2-positive cancers were primarily classified as a goblet-cell type by mucin-histochemical staining and the other immunohistochemical staining methods. Therefore, it is concluded that sialosyl-Tn is an excellent marker of small intestinal mucins and is indicative of a small intestinal type of differentiation in two-thirds of gastric cancers.
authors.affiliation: Laboratory of Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Iwata
authors.forename: S H
authors.initials: SH
authors.lastname: Itzkowitz
authors.forename: J L
authors.initials: JL
authors.lastname: Werther
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: H
authors.initials: H
authors.lastname: Nakamura
authors.forename: M
authors.initials: M
authors.lastname: Ichinose
authors.forename: K
authors.initials: K
authors.lastname: Miki
authors.forename: M
authors.initials: M
authors.lastname: Tatematsu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000911:Antibodies, Monoclonal; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis*; D014408:Biomarkers, Tumor / Q000276:immunology*; D004386:Duodenum / Q000473:pathology; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D007413:Intestinal Mucosa / Q000473:pathology; D007414:Intestinal Neoplasms / Q000276:immunology* / Q000473:pathology; D008297:Male; D008679:Metaplasia; D008875:Middle Aged; D009077:Mucins / Q000032:analysis; D010641:Phenotype; D012016:Reference Values; D013274:Stomach Neoplasms / Q000276:immunology* / Q000473:pathology
chemical_list: D000911:Antibodies, Monoclonal; D015295:Antigens, Tumor-Associated, Carbohydrate; D014408:Biomarkers, Tumor; D009077:Mucins; C055491:sialosyl-Tn antigen