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Article
Nature Medicine 5, 803 - 809 (1999)
doi:10.1038/10525
Cloning of mammalian heparanase, an important enzyme in tumor invasion and metastasis
Mark D. Hulett1, Craig Freeman1, Brenton J. Hamdorf1, Rohan T. Baker2, Matthew J. Harris2 & Christopher R. Parish1
Abstract
The endoglycosidase heparanase is an important in the degradation of the extracellular matrix by invading cells, notably metastatic tumor cells and migrating leukocytes. Here we report the cDNA sequence of the human platelet enzyme, which encodes a unique protein of 543 amino acids, and the identification of highly homologous sequences in activated mouse T cells and in a highly metastatic rat adenocarcinoma. Furthermore, the expression of heparanase mRNA in rat tumor cells correlates with their metastatic potential. Exhaustive studies have shown only one heparanase sequence, consistent with the idea that this enzyme is the dominant endoglucuronidase in mammalian tissues.
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