期刊
CANCER RESEARCH
卷 64, 期 11, 页码 3928-3933出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/0008-5472.CAN-03-2718
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The beta-endoglucuronidase heparanase plays an important role in tumor invasion, a process that is significantly enhanced by hypoxia. We have used a strategy of stable transfection with antisense to derive ovarian carcinoma cell lines that express different levels of heparanase and used these to demonstrate that invasion correlates with heparanase activity. Secreted heparanase activity was increased by reduction, hypoxia, and growth of cells under reduced oxygen (1%) augmented heparanase activity and invasion, both of which are inhibited by treatment with antiheparanase antibodies. This is the first demonstration that heparanase activity may be regulated by microenvironmental redox conditions, which influence invasion, and that invasion can be blocked with specific heparanase-neutralizing antibodies.
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