E A Baker1, D J Leaper, J P Hayter, A J Dickenson. 1. Clinical Research Scientist, Professorial Unit of Surgery, University Hospital of North Tees, Stockton on Tees, UK.
Abstract
BACKGROUND: The plasminogen activator system consists of two plasminogen activators, urokinase (uPA) and tissue (tPA); PA inhibitors (PAI-1, and -2), and a cell surface receptor for uPA (uPAR). The plasminogen activator system is involved at many stages of the metastatic cascade, including matrix remodelling, cell proliferation, and migration. AIMS: To compare tissue concentrations of the components of the plasminogen activator system in paired tumour tissue and normal tissue in patients with oral squamous cell carcinoma, and to correlate these with the histopathological grading of the tumour. METHODS: Thirty-eight paired tissue samples were analysed by enzyme-linked immunosorbent assays (ELISA; ng/mg protein) for uPA, tPA, uPAR, PAI-1, and PAI-2. RESULTS: Concentrations of uPA, uPAR, PAI-1, and PAI-2 were significantly higher in tumour than in normal oral tissue (median in uPAR tumour 1.6 (range; 0.1-7.5) ng/mg protein; normal=0.2 (0-2.3), p<0.05). There were strong correlations between the concentrations of certain components of the plasminogen activator system in particular between uPA, uPAR, and PAI-1 (p<0.05). Tissue concentrations of some components of the plasminogen activator system correlated with clinical and pathological indexes of aggression of tumours, including differentiation and T-stage. CONCLUSION: The relation between components of the plasminogen activator system, in particular uPA, uPAR, and PAI-1 in invasion, metastasis, prognosis, and survival, requires further investigation in oral squamous cell carcinomas.
BACKGROUND: The plasminogen activator system consists of two plasminogen activators, urokinase (uPA) and tissue (tPA); PA inhibitors (PAI-1, and -2), and a cell surface receptor for uPA (uPAR). The plasminogen activator system is involved at many stages of the metastatic cascade, including matrix remodelling, cell proliferation, and migration. AIMS: To compare tissue concentrations of the components of the plasminogen activator system in paired tumour tissue and normal tissue in patients with oral squamous cell carcinoma, and to correlate these with the histopathological grading of the tumour. METHODS: Thirty-eight paired tissue samples were analysed by enzyme-linked immunosorbent assays (ELISA; ng/mg protein) for uPA, tPA, uPAR, PAI-1, and PAI-2. RESULTS: Concentrations of uPA, uPAR, PAI-1, and PAI-2 were significantly higher in tumour than in normal oral tissue (median in uPARtumour 1.6 (range; 0.1-7.5) ng/mg protein; normal=0.2 (0-2.3), p<0.05). There were strong correlations between the concentrations of certain components of the plasminogen activator system in particular between uPA, uPAR, and PAI-1 (p<0.05). Tissue concentrations of some components of the plasminogen activator system correlated with clinical and pathological indexes of aggression of tumours, including differentiation and T-stage. CONCLUSION: The relation between components of the plasminogen activator system, in particular uPA, uPAR, and PAI-1 in invasion, metastasis, prognosis, and survival, requires further investigation in oral squamous cell carcinomas.
Authors: J Dhanda; A Triantafyllou; T Liloglou; H Kalirai; B Lloyd; R Hanlon; R J Shaw; D R Sibson; J M Risk Journal: Br J Cancer Date: 2014-09-30 Impact factor: 7.640
Authors: Tanguy Lechertier; Louise E Reynolds; Hyojin Kim; Ana Rita Pedrosa; Jesús Gómez-Escudero; José M Muñoz-Félix; Silvia Batista; Matthew Dukinfield; Fevzi Demircioglu; Ping Pui Wong; Kylie P Matchett; Neil C Henderson; Gabriela D'Amico; Maddy Parsons; Catherine Harwood; Pascal Meier; Kairbaan M Hodivala-Dilke Journal: Nat Commun Date: 2020-06-04 Impact factor: 14.919