Expression of plasminogen activator and plasminogen activator inhibitor by rat mesothelioma induced by asbestos

Cancer Letters
S P LenzD A Hart

Abstract

We have investigated the expression of plasminogen activators (PAs) and PA inhibitors (PAIs) by an asbestos-induced mesothelioma. Using zymographic, immunological and biochemical techniques it was demonstrated that cell lines derived from the tumor express high levels of PAI and low levels of a UK-like PA. Adherent and partially non-adherent variants of the mesothelioma expressed indistinguishable amounts of PAI and UK. Based on partial biochemical characterization, the PAI secreted by the mesothelioma cells was a set of PAIs which consisted of PAI-1 in addition to other species. These observations indicate that the difference in growth phenotype of the adherent and partially non-adherent lines was not due to detectable differences in PA and PAI expression.

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Citations

Oct 28, 1999·American Journal of Respiratory Cell and Molecular Biology·R C PerkinsS Idell

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