Loss of a novel mucin-like epithelial glycoprotein in oral and cervical squamous cell carcinomas

• Tipo: Artigo em Revista Científica Internacional
• Data: 1997

Autores

Nielsen, PA (Autor) Outra; Mandel, U (Autor) Outra; Therkildsen, MH (Autor) Outra; Ravn, V (Autor) Outra; David L (Autor) FMUP; Celso Reis (Autor) Outra; Wandall, HH (Autor) Outra; Dabelsteen, E (Autor) Outra; Clausen, H (Autor) Outra

Revista

Título: Cancer Research

Vol. 57

Páginas: 634-640

ISSN: 0008-5472

Editora: American Association for Cancer Research

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 10 Citações

Outras Informações

ID Authenticus: P-001-BZ2

Abstract (EN): Stratified squamous epithelia of oral and cervical mucosa express high levels of simple mucin-type O-linked carbohydrates, and these are known to undergo structural changes in relation to epithelial differentiation and neoplastic transformation, O-glycans in these epithelia are associated with the cell membrane, but the identity of the carrier molecule(s) remains largely unknown, We report here the identification of a membrane-bound M(r) 200,000-250,000 glycoprotein (gp230) that is expressed in stratified squamous epithelia of the oral cavity. Western blot analysis identified gp230 as a major carrier of simple-mucin type carbohydrate antigens in buccal nonkeratinized mucosal epithelium, suggesting that it may represent a mucin-like molecule, A monoclonal antibody PANH4 defining a protein epitope of gp230 was generated, The PANH4 epitope was localized by immunohistology to suprabasal cell layers of buccal epithelium and was also found in larynx, esophagus, vagina, and exocervix, but not in epidermis, Data showed that gp230 was distinct from MUC1 or CD44. It is interesting that in most cases gp230 was not expressed in squamous cell carcinomas of buccal and cervical mucosa. A few moderately differentiated carcinomas, mainly from cervix, expressed the gp230 epitope, The results suggest that a membrane-bound mucin-like molecule, gp230, is associated with the differentiated phenotype of normal mucosal stratified squamous epithelia and that expression of gp230 generally is lost in severe oral epithelial dysplasia and squamous cell carcinomas of oral and cervical mucosa.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7