The kinetic and immunologic properties of phenylalanine hydroxylase of adult rat liver were compared to the properties of the similar enzyme present in cultured H4-II-E-C3 hepatoma cells. The enzymes from the two sources could not be distinguished by the Km values for either phenylalanine or 6,7-dimethyltetrahydropterin. Analysis by double immunodiffusion showed that phenylalanine hydroxylase f...

Single-walled carbon nanohorns (SWNHs) may be useful as carriers for anticancer drugs due to their particular structure. However, the interactions between the material itself and cancerous or normal cells have seldom been studied. To address this problem, the effects of raw SWNH material on the biological functions of human liver cell lines were studied. Our results showed that unmodified SWNHs...

The regulation of succinyl-CoA:acetoacetyl-CoA transferase (CoA transferase) has been studied in 8 rat hepatoma cell lines. Compared with normal rat hepatocytes, which have almost nondetectable activity of the enzyme, the hepatoma cell lines have a wide range of expression of CoA transferase activity, from as low as 45 nmol/min/mg to as high as 960 nmol/min/mg. Western blotting showed that the ...

RATIONALE Lipoprotein(a) [Lp(a)] is a low-density lipoprotein-like lipoprotein and important cardiovascular risk factor whose cognate receptor and intracellular fate remains unknown. OBJECTIVE Our study aimed to determine the intracellular trafficking pathway for Lp(a) and the receptor responsible for its uptake in liver cells. METHODS AND RESULTS Human hepatoma cells were treated with Lp(a...

Purpose: To examine the potential modulatory mechanisms of NORAD in hepatoma vitro. 
 Methods: In this study, four human cell lines (Bel7404, PLC5, HepG2, and HuH7), as well a immortalized Normal MIHA line were employed. Transfection was performed to up-or down-regulate miR-202-5p expression cells. RT-qPCR used measure expressions NORAD, miR-202-5p, biomarkers for cycle apoptosis HCC lines...

background: hepatitis c is a global health problem. the exact mechanisms by which hepatitis c virus (hcv) can evade the host immune system have become controversial. whether hcv polyproteins modulate ifn signalling pathways or hcv proteins are responsible for such a property is the subject of interest. therefore, an efficient baculovirus delivery system was developed to introduce the whole geno...

The synthesis of serum albumin has been studied in hybrids between well-differentiated rat hepatoma cells, which synthesize serum albumin, and mouse fibroblasts (3T3) that do not synthesize albumin. By immunodiffusion techniques with noncrossreacting antisera, the production of both rat and mouse albumin by the hybrids has been examined. Karyologically identified hybrids were produced between 3...

The kinetic and immunologic properties of phenylalanine hydroxylase of adult rat liver were compared to the properties of the similar enzyme present in cultured H4-II-E-C3 hepatoma cells. The enzymes from the two sources could not be distinguished by the K, values for either phenylalanine or 6,7-dimethyltetrahydropterin. Analysis by double immunodiffusion showed that phenylalanine hydroxylase f...

We have investigated expression of the S-adenosylmethionine decarboxylase (AdoMetDC) gene in H4-II-E rat hepatoma cells treated with growth factors (epidermal growth factor and transforming growth factor beta 1) and inducers (cAMP and insulin). Treatment with insulin caused a marked increase in both RNA level and enzyme activity. The stability of AdoMetDC mRNA was not altered by insulin treatme...

Previous studies have indicated that nitric oxide (NO) released from Kupffer cells modulates biological viability of cocultured hepatoma cells. This study was designed to evaluate the mechanisms by which Kupffer cells synthesize and release NO in reponse to cocultured hepatoma cells. Kupffer cells isolated from male Wistar rats were cocultured with rat hepatoma cell line, AH70 cells. The sum of...