Effect of endogenously produced parathyroid hormone-related peptide on growth of a human hepatoma cell line (Hep G2).
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Carboxypeptidase H. A regulatory peptide-processing enzyme produced by human hepatoma Hep G2 cells.
Human hepatoma (Hep G2) cells have been shown to secrete nanogram quantities of carboxypeptidase N (Grimwood, B. G., Plummer, T. H., Jr., and Tarentino, A. (1988) J. Biol. Chem. 263, 14397-14401). A second carboxypeptidase with an acidic pH optimum (pH 5.5) is also secreted at levels 2-3-fold greater than carboxypeptidase N. This enzyme was partially purified from the conditioned medium and com...
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Receptor-mediated endocytosis of tissue-type plasminogen activator (t-PA) was characterized with the human hepatoma cell line Hep G2. At 4 degrees C binding of 125I-t-PA to Hep G2 cells is rapid, specific, saturable, and reflective of a homogeneous population of 76,000 high-affinity surface sites per cell (Kd = 3.7 nM). The kinetics of 125I-t-PA binding to its receptor are characterized by rate...
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The human hepatoma cell line Hep-G2 has been shown to express the major enzymes of intra- and extracellular cholesterol metabolism. These include lecithin:cholesterol acyltransferase, acyl coenzyme A:cholesterol acyltransferase, 3-hydroxy-3-methylglutaryl coenzyme A reductase, and cholesterol-7 alpha-hydroxylase. Regulatory mechanisms that have been described in other hepatic systems also appea...
متن کاملCharacterization of lipoproteins produced by the human liver cell line, Hep G2, under defined conditions1
Confluent monolayers of the human hepatoblastoma-derived cell line, Hep G2, were incubated in serum-free medium. Conditioned medium was ultracentrifugally separated into d < 1.063 g/ml and d 1.063-1.20 g/ml fractions since very little VLDL was observed. The d < 1.063 g/ml fraction was examined by electron microscopy; it contained particles of 24.5 * 2.3 nm diameter, similar in size to plasma LD...
متن کاملCharacterization of lipoproteins produced by the human liver cell line, Hep G2, under defined conditions.
Confluent monolayers of the human hepatoblastoma-derived cell line, Hep G2, were incubated in serum-free medium. Conditioned medium was ultracentrifugally separated into d less than 1.063 g/ml and d 1.063-1.20 g/ml fractions since very little VLDL was observed. The d less than 1.063 g/ml fraction was examined by electron microscopy; it contained particles of 24.5 +/- 2.3 nm diameter, similar in...
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ژورنال
عنوان ژورنال: Endocrinology
سال: 1996
ISSN: 0013-7227,1945-7170
DOI: 10.1210/endo.137.6.8641188