title: Expression of matrix metalloproteinases and tissue inhibitor of metalloproteinases in head and neck squamous cell carcinoma.
abstract: Matrix metalloproteinases (MMPs) are a family of proteolytic enzymes implicated in the invasion and metastasis of many cancers. In situ hybridization techniques were used to reveal sites of expression of collagenase (MMP-1), gelatinase 72 kd (MMP-2), gelatinase 92 kd (MMP-9), and tissue inhibitor of metalloproteinase-1 (TIMP-1) in head and neck carcinomas (N = 21). Both TIMP-1 and gelatinase 72 kd were expressed in nearly all tumors, whereas the expression of collagenase and gelatinase 92 kd showed variability. Tumor-associated expression of MMPs was strongest in stromal cells near advancing margins. No differences in expression levels were detected between primary and metastatic sites. This paper reviews the literature and discusses the significance and possible implications of MMPs in head and neck squamous cell carcinoma.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
authors.forename: S J
authors.initials: SJ
authors.lastname: Charous
authors.forename: G P
authors.initials: GP
authors.lastname: Stricklin
authors.forename: L B
authors.initials: LB
authors.lastname: Nanney
authors.forename: J L
authors.initials: JL
authors.lastname: Netterville
authors.forename: B B
authors.initials: BB
authors.lastname: Burkey
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000201:enzymology* / Q000378:metabolism / Q000473:pathology*; D017364:Collagenases / Q000378:metabolism; D017931:DNA Primers; D018093:Gelatinases / Q000378:metabolism; D005784:Gene Amplification; D015870:Gene Expression; D006023:Glycoproteins / Q000378:metabolism; D006258:Head and Neck Neoplasms / Q000201:enzymology* / Q000378:metabolism / Q000473:pathology; D006651:Histocytochemistry; D006801:Humans; D017403:In Situ Hybridization; D020781:Matrix Metalloproteinase 1; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9; D061965:Matrix Metalloproteinase Inhibitors; D008666:Metalloendopeptidases / Q000096:biosynthesis / Q000378:metabolism*; D008875:Middle Aged; D009367:Neoplasm Staging; D016133:Polymerase Chain Reaction; D019714:Tissue Inhibitor of Metalloproteinases
chemical_list: D017931:DNA Primers; D006023:Glycoproteins; D061965:Matrix Metalloproteinase Inhibitors; D019714:Tissue Inhibitor of Metalloproteinases; D017364:Collagenases; D018093:Gelatinases; D008666:Metalloendopeptidases; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9; D020781:Matrix Metalloproteinase 1