We have constructed an artificial ligand for the hepatocyte-specific asialoglycoprotein receptor for the purpose of generating a synthetic delivery system for DNA. This ligand has a tetra-antennary structure, containing four terminal galactose residues on a branched carrier peptide. The carbohydrate residues of this glycopeptide were introduced by reductive coupling of lactose to the alpha- and...

The turnover of plasma membrane proteins in primary rat hepatocyte cultures was examined by following the loss of polypeptides labeled in situ by lactoperoxidase-catalyzed iodination using 125I and 131I. Most plasma membrane proteins had similar rates of degradation, having a half-life of approximately 85 h. By in situ labeling via lactoperoxidase-catalyzed iodination, as well as metabolically ...

The present study , was an attempt to develop galactosylated albumin nanoparticles of Simvastatin for treatment of hypercholesterolemia. By developing the galactosylated nanoparticulated delivery the required action of drug at the target site at liver can be provided. The advantage of targeting helps to reduce the systemic side effects which may be occur due to the distribution of the drug to t...

The present study , was an attempt to develop galactosylated albumin nanoparticles of Simvastatin for treatment of hypercholesterolemia. By developing the galactosylated nanoparticulated delivery the required action of drug at the target site at liver can be provided. The advantage of targeting helps to reduce the systemic side effects which may be occur due to the distribution of the drug to t...

The asialoglycoprotein (ASGP) receptor undergoes constitutive endocytosis through the coated pit/coated vesicle pathway in hepatocytes. Studies on HepG2 cells have shown that the receptor is phosphorylated at serine under control conditions and following protein kinase C stimulation. This study examined whether the ASGP receptor could also serve as a substrate for a tyrosine kinase in HepG2 cel...

Post-transcriptional regulation of the asialoglyco-protein receptor (ASGR) in the HepG2 cell line can be mediated by the presence of biotin in the culture medium. To determine if the induction by biotin of intracellular cGMP affects ASGR expression, HepG2 were grown in biotin-depleted medium with the cell-permeant 8-bromo-cGMP (8-Br-cGMP). Both cell-surface and total ASGR binding of iodinated a...