A novel ligand blot assay detects different hyaluronan-binding proteins in rat liver hepatocytes and sinusoidal endothelial cells. 1996

J Yannariello-Brown, and B Zhou, and D Ritchie, and J A Oka, and P H Weigel
Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City 73190, USA.

We have developed a sensitive ligand blot assay to detect hyaluronan (HA) binding proteins in cell extracts using 125I-HA. Samples to be tested are electrophoresed using standard, nonreducing SDS-PAGE conditions, electro-transferred to nitrocellulose then blocked in buffer containing Tween 20. After incubation with 125I-HA the nitrocellulose is washed and HA-binding proteins are detected by autoradiography. This method was used to detect different HA-binding proteins in isolated rat liver cell preparations. Two HA-binding bands of 175 kD and 350 kD were detected in sinusoidal endothelial cells. Both bands were competed virtually 100% with nonlabeled HA. Using rat hepatocytes, the assay detected major bands at 85 kD and 180 kD. In addition, histones present in both cell types were readily detected in the low MW region. Thus, two different liver cell types show different HA-binding patterns. The blocking procedure is critical for successful renaturation of HA-binding activity, since substitution of BSA for Tween 20 did not result in detectable 125I-HA-binding. This ligand blot assay will be a powerful tool to detect HA-binding proteins in various other tissues and cell types.

UI MeSH Term Description Entries
D007457 Iodine Radioisotopes Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes. Radioisotopes, Iodine
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D011136 Polysorbates Sorbitan mono-9-octadecanoate poly(oxy-1,2-ethanediyl) derivatives; complex mixtures of polyoxyethylene ethers used as emulsifiers or dispersing agents in pharmaceuticals. Polysorbate,Polysorbate 20,Polysorbate 80,Sorbitan Derivatives,Tween,Tweens,PSML,Polyoxyethylene Sorbitan Monolaurate,Tween 20,Tween 60,Tween 80,Tween 81,Tween 85,20s, Polysorbate,20s, Tween,60s, Tween,80s, Polysorbate,80s, Tween,81s, Tween,85s, Tween,Derivative, Sorbitan,Derivatives, Sorbitan,Monolaurate, Polyoxyethylene Sorbitan,Monolaurates, Polyoxyethylene Sorbitan,PSMLs,Polyoxyethylene Sorbitan Monolaurates,Polysorbate 20s,Polysorbate 80s,Sorbitan Derivative,Sorbitan Monolaurate, Polyoxyethylene,Sorbitan Monolaurates, Polyoxyethylene,Tween 20s,Tween 60s,Tween 80s,Tween 81s,Tween 85s
D002462 Cell Membrane The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells. Plasma Membrane,Cytoplasmic Membrane,Cell Membranes,Cytoplasmic Membranes,Membrane, Cell,Membrane, Cytoplasmic,Membrane, Plasma,Membranes, Cell,Membranes, Cytoplasmic,Membranes, Plasma,Plasma Membranes
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D004727 Endothelium A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body. Endotheliums
D006820 Hyaluronic Acid A natural high-viscosity mucopolysaccharide with alternating beta (1-3) glucuronide and beta (1-4) glucosaminidic bonds. It is found in the UMBILICAL CORD, in VITREOUS BODY and in SYNOVIAL FLUID. A high urinary level is found in PROGERIA. Amo Vitrax,Amvisc,Biolon,Etamucine,Healon,Hyaluronan,Hyaluronate Sodium,Hyvisc,Luronit,Sodium Hyaluronate,Acid, Hyaluronic,Hyaluronate, Sodium,Vitrax, Amo
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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