Identification of the inhibitor of the plasminogen activator as the major protein secreted by endothelial rat liver cells

FEBS Letters
J KuiperT J Van Berkel

Abstract

Freshly isolated Kupffer and endothelial liver cells exhibit a rate of 'de novo' protein synthesis which is twice as high per mg cell protein as that of parenchymal liver cells and contribute significantly (7.5% and 5.9%, respectively) to total liver protein secretion. In parenchymal cells the main secretory protein is a 68 kDa protein (containing 19% fo the secreted radioactivity, presumably albumin). In Kupffer cells a 49 kDa protein contains 8% of the secreted radioactivity, while in endothelial liver cells a 55 kDa protein is the most prominent secretory protein (containing 11% of the secreted radioactivity). By aid of a specific antibody the 55 kDa protein was identified as the inhibitor of the plasminogen activator and in the liver this protein was only secreted by the endothelial cells.

References

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Citations

Jan 1, 1995·Journal of Gastroenterology and Hepatology·M J Arthur

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