title: The expression of the receptor for glycation endproducts (RAGE) in oral squamous cell carcinomas.
abstract: Advanced glycation endproducts (AGEs) and their receptors, receptor for advanced glycation endproducts (RAGE), are novel groups of molecules with roles in inflammation, cytokine activation, and promotion of cell growth. Recently, RAGE has been implicated in the progression and metastasis of several epithelial tumors. The expression of RAGE was examined in 38 oral squamous cell carcinoma (OSCC) cases by immunohistochemistry. In the OSCCs, RAGE positivity, interpreted as more than 25% positive cells, was detected in 10 of 10 well-differentiated, 3 of 4 well-to-moderately differentiated, 3 of 9 moderately differentiated, 1 of 7 moderate-to-poorly differentiated, and 0 of 8 poorly differentiated tumors. The staining percentage was significantly higher in well-differentiated tumors compared to moderately (P < .05) and poorly differentiated (P < .05) tumors. All normal mucosa samples were RAGE-positive. Western blot analysis for RAGE was performed on 2 OSCCs and 2 normal oral mucosa samples. Higher expression was observed in the normal tissues compared to the OSCCs. Our results show that RAGE immunoreactivity correlates with histologic differentiation in OSCC.
authors.affiliation: Division of Oral and Maxillofacial Surgery, College of Dental Medicine, Columbia University, New York, New York 10032, USA. rl351@columbia.edu
authors.forename: Regina
authors.initials: R
authors.lastname: Landesberg
authors.forename: Victoria
authors.initials: V
authors.lastname: Woo
authors.forename: Linda
authors.initials: L
authors.lastname: Huang
authors.forename: Matthew
authors.initials: M
authors.lastname: Cozin
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.forename: Cory
authors.initials: C
authors.lastname: Bailey
authors.forename: Wu
authors.initials: W
authors.lastname: Qu
authors.forename: Carla
authors.initials: C
authors.lastname: Pulse
authors.forename: Ann Marie
authors.initials: AM
authors.lastname: Schmidt
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015153:Blotting, Western; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D016022:Case-Control Studies; D002454:Cell Differentiation; D005260:Female; D017127:Glycation End Products, Advanced / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000378:metabolism; D009062:Mouth Neoplasms / Q000378:metabolism* / Q000473:pathology; D018809:Proliferating Cell Nuclear Antigen / Q000096:biosynthesis; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic / Q000096:biosynthesis*; D012189:Retrospective Studies
chemical_list: D017127:Glycation End Products, Advanced; D018809:Proliferating Cell Nuclear Antigen; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic