Journal
BIOCHEMISTRY-MOSCOW
Volume 68, Issue 7, Pages 711-717Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1023/A:1025051214001
Keywords
matrix metalloproteinases; membrane-bound metalloproteinases; tissue inhibitors of metalloproteinases; invasion and metastasis of tumor cells
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The role of various matrix metalloproteinases (MMP)-such as gelatinases, stromelysins, matrilysin, collagenase-3, and membrane-bound MMP (MB-MMP)-in tumor invasion and metastasis is discussed. Data suggesting significance for malignant growth of the expression level of these enzymes and also of their activators and inhibitors are presented. It is concluded that at different stages of tumor progression the activity of different MMPs is displayed, which is regulated by various growth factors and oncogenes. Different malignancies are characterized by changes in activities of specific MMPs. Data are presented which show significance of the ratio between the MMP activity and that of tissue inhibitors of metalloproteinases (TIMP) in tumor invasion and metastasis, especially in connection with a dual role of TIMP as both MMP inhibitors and activators.
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