title: Nuclear matrix proteins as malignant markers in squamous cell carcinoma of the head and neck.
abstract: OBJECTIVE
  To test the hypothesis that transformation of normal upper aerodigestive mucosa to squamous cell carcinoma of the head and neck (SCCHN) is associated with specific changes in nuclear matrix (NM) proteins.
  
  
  METHODS
  Retrospective, nonrandomized investigation using a cellular fractionation sequence followed by 2-dimensional gel electrophoresis analysis of NM proteins.
  
  
  METHODS
  Nuclear matrix proteins were extracted from a cohort of 12 pathologic SCCHN specimens and 5 normal specimens of oropharyngeal mucosa.
  
  
  RESULTS
  All SCCHN specimens examined expressed 11 NM proteins that were not detected in normal mucosa. Conversely, at least 4 NM proteins that were expressed by all specimens of normal mucosa were absent from all SCCHN tumors. Seven NM proteins were common to carcinomas and normal specimens. Spindle cell histological variants of squamous cell carcinoma had distinct NM patterns.
  
  
  CONCLUSIONS
  Malignant transformation of normal upper aerodigestive mucosa to SCCHN is associated with specific changes in NM composition. These data suggest that different NM proteins might serve as specific tumor markers.
authors.affiliation: Departments of Otolaryngology-Head and Neck Surgery, University Cancer Center, University of Minnesota, Minneapolis, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: McCaffery
authors.forename: M
authors.initials: M
authors.lastname: Gapany
authors.forename: R A
authors.initials: RA
authors.lastname: Faust
authors.forename: A T
authors.initials: AT
authors.lastname: Davis
authors.forename: G L
authors.initials: GL
authors.lastname: Adams
authors.forename: K
authors.initials: K
authors.lastname: Ahmed
mesh_terms: D034961:Antigens, Nuclear; D015415:Biomarkers / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis*; D002294:Carcinoma, Squamous Cell / Q000737:chemistry / Q000175:diagnosis*; D015180:Electrophoresis, Gel, Two-Dimensional; D006258:Head and Neck Neoplasms / Q000737:chemistry / Q000175:diagnosis*; D006801:Humans; D009092:Mucous Membrane / Q000737:chemistry; D009687:Nuclear Proteins / Q000032:analysis*; D009960:Oropharynx / Q000737:chemistry; D012189:Retrospective Studies
chemical_list: D034961:Antigens, Nuclear; D015415:Biomarkers; D014408:Biomarkers, Tumor; D009687:Nuclear Proteins