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  • Articles  (389)
  • Chemistry  (381)
  • fibronectin  (9)
  • Wiley-Blackwell  (389)
  • Annual Reviews
  • Elsevier
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  • National Academy of Sciences
  • Periodicals Archive Online (PAO)
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  • 1985-1989  (347)
  • 1980-1984
  • 1970-1974  (42)
  • 1987  (178)
  • 1985  (169)
  • 1970  (42)
  • Medicine  (389)
  • Energy, Environment Protection, Nuclear Power Engineering
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  • Articles  (389)
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  • 1985-1989  (347)
  • 1980-1984
  • 1970-1974  (42)
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  • 1
    Electronic Resource
    Electronic Resource
    Comparisons of evolutionarily distinct fibronectins: Evidence for the origin of plasma and fibroblast cellular fibronectins from a single gene (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 27 (1985), S. 97-107 
    Details
    ISSN: 0730-2312
    Keywords: fibronectin ; peptide mapping ; ELISA ; evolution ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Plasma and fibroblast cellular fibronectins from three different species were compared for structural similarities and differences. Partial tryptic digestion of either human or chicken plasma and cellular fibronectins yields homologous protease-resistant domains within a species but few homologies between species regardless of the source. Within a species, human or chicken plasma and fibroblast cellular fibronectins are immunologically indistinguishable as determined by the ELISA technique. There is limited immunological cross-reactivity between species. Two-dimensional tryptic peptide maps of fibroblast cellular and plasma fibronectins from the same species are also very similar: 85-95% of the spots on such maps comigrate. When peptide maps from different species are compared no more than 10% of the spots comigrate.Three models for the genetic origin of cellular and plasma fibronectins in vertebrates are considered. A model in which both fibroblast cellular and plasma fibronectins arise from the same gene is the simplest that is consistent with the data.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240270204
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  • 2
    Electronic Resource
    Electronic Resource
    Basement membrane component changes in skeletal muscle transplants undergoing regeneration or rejection (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 27 (1985), S. 337-346 
    Details
    ISSN: 0730-2312
    Keywords: laminin ; fibronectin ; basement membrane ; regeneration ; immune rejection ; skeletal muscle ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The basement membrane of myofibers plays an important role during orderly regeneration of skeletal muscle after injury. In this report, changes in various basement membrane components were analyzed in skeletal muscle grafts undergoing regeneration (autografts) or immune rejection (allografts). The immunofluorescence technique using specific antibodies against laminin, types IV and V collagen, heparan sulfate proteoglycan, fibronectin, in combination with binding of concanavalin A (ConA) was used to monitor basement membranes. In normal muscle, these components were localized in the pericellular region of myofiber corresponding to its basement membrane, After transplantation, the majority of myofibers underwent degeneration as a result of is chemic injury, followed by regeneration from precursor myosatellite cells. Various components of basement membrane zone disappeared from the degenerating myofibers, leaving behind some unidentifiable component that still bound ConA. A new basement membrane appeared around the regenerated myotubes which persisted during maturation of the regenerating muscle, In rejected skeletal muscles, the immunoreactivity of various components persisted even after the disappearance of myotubes and myofiber cytoplasm. In addition, an accumulation of fibronectin was seen throughout the rejected muscle with the onset of immune rejection. These results demonstrate that the major basement membrane components disappear and reappear sequentially during myofiber degeneration and regeneration. Such a turnover is not seen in rejected skeletal muscles. Thus, the myofiber basement membrane is not a static structure as previously thought but one which changes chemically during degeneration and regeneration. This feature of basement membrane may be important in the orderly regeneration of skeletal muscle after injury.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240270404
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  • 3
    Electronic Resource
    Electronic Resource
    Amino acid sequence specificities of an adhesive recognition signal (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 99-104 
    Details
    ISSN: 0730-2312
    Keywords: fibronectin ; cell adhesion ; synthetic peptides ; fibroblasts ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Synthetic peptides derived from the cell-binding domain of fibronectin have previously been found to inhibit fibronectin-mediated adhesion in vitro competitively and reversibly, as well as inhibiting cell migratory events in vivo. The amino acid sequence specificity required for this inhibitory activity has been examined further using variations of the originally identified active peptide sequences. The most active small peptide was found to be the pentapeptide Gly-Arg-Gly-Asp-Ser. Although the tetrapeptide Arg-Gly-Asp-Ser was found to retain substantial activity, it was approximately threefold less active. An “inverted” peptide sequence with these same four amino acids arranged in the mirror sym-metrical sequence Ser-Asp-Gly-Arg was found to be nearly as active as the forward sequence. However, the same inverted tetrapeptide sequence embedded in a synthetic decapeptide derived from a sequence of histocompatibility antigens has minimal activity, suggesting the importance of adjacent sequences in modifying the activity of such peptides. Neither substitution of amino acids of the same charge nor reversal of the positions of the two charged amino acids retains biological activity. Decreasing the spacing between the charged residues also causes a loss of activity. Our results suggest the hypothesis that this adhesive recognition signal consists of a specific arrangement of one acidic and one basic charged group and additional information provided by adjacent amino acids.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280203
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  • 4
    Electronic Resource
    Electronic Resource
    The cell attachment determinant in fibronectin (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 115-126 
    Details
    ISSN: 0730-2312
    Keywords: cell adhesion ; fibronectin ; peptides ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Fibronectin possesses a domain that interacts with cell surfaces. The ability of fibronectin to promote cell attachment can be duplicated with a short amino acid sequence, glycyl-L-arginyl-glycyl-L-aspartyl-L-serine, taken from that domain. The tripeptide Arg-Gly-Asp appears to be irreplaceable for maintenance of the activity of this peptide, wheareas the serine residue can be replaced with some, but apparently not all, possible residues. This recognition sequence, or a closely related sequence, is present in a number of proteins other than fibronectin that interact with cells. These proteins include collagens, fibrinogen, thrombin, a bacterial surface protein, and two viral proteins, as well as discoidin-I, a protein implicated in the aggregation of Dictyostelium discoideum. A similar sequence is also repeated in some, but not all, fibronectin molecules, making it possible that some fibronectin molecules have more than a single cell attachment site. Synthetic peptides constructed from sequences taken from several of these other proteins have also been shown to promote cell attachment. The tripeptide sequence may, therefore, constitute an ancient cellular recognition mechanism common to many proteins.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280205
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  • 5
    Electronic Resource
    Electronic Resource
    Immunochemical and biochemical characterization of a glioma-associated extracellular matrix glycoprotein (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 183-195 
    Details
    ISSN: 0730-2312
    Keywords: extracellular matrix ; glioma-associated glycoprotein ; fibronectin ; GMEM ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: A novel human glioma-associated extracellular matrix (ECM) glycoprotein has been identified by murine monoclonal antibody 81C6. The glycoprotein, designated GMEM, is expressed in the ECM of glioma and mesenchymal cell cultures, in the perivascular matrix of endothelial proliferations of human gliomas, and in the stroma of human glioma xenografts in athyrnic mice, where it has been used as a target antigen for monoclonal antibody tumor localization and radioimaging. We report here on the immunochemical and biochemical characterization of GMEM. Polyacrylamide gel analysis of immunoprecipitated [3H]-leucine- and [3H]-glucosamine-labeled ECM from the human glioma cell line U-251MG has shown that GMEM is a high-molecular-weight macromolecule (Mr ∼ 1,000,000) composed of Mr ∼ 230,000 disulfide-bonded glycoprotein subunits. Immunoprecipitation, immunoblot, and one-dimensional peptide map analysis have shown that GMEM is distinct from human fibroblast and plasma fibronectin. These results support previous immunohistology and absorption analysis findings, indicating that GMEM is distinct from fibronectin, laminin, and glycosaminoglycans secreted by U-251MG.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280302
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  • 6
    Electronic Resource
    Electronic Resource
    Binding of antibodies in liposomes to extracellular matrix antigens (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 23-29 
    Details
    ISSN: 0730-2312
    Keywords: fibronectin ; laminin ; liposomes ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: We have incorporated antibodies against fibronectin or laminin into liposomes and studied their interaction with insoluble forms of these antigens. The antibodies, after modification by palmitoylchloride, were incorporated into the lipid bilayer by the cholate dialysis method. The antibodies in the liposomes recognized their specific antigen with little reaction to the alternative attachment protein or to albumin (〈2%). The binding of antibody-containing liposomes to insoluble antigen was inhibited by soluble antibodies to the respective antigens but not by antibodies to other antigens. The affinity constant of the liposome-antibody complex with the antigen was estimated at 1-10 × 10-9 M liposomes. Thus, antibodies in liposomes retain their reactivity and specificity, and the reaction constant is comparable to that observed for immune complexes.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280105
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  • 7
    Electronic Resource
    Electronic Resource
    Characterization of a membrane-associated glycoprotein complex implicated in cell adhesion to fibronectin (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 307-318 
    Details
    ISSN: 0730-2312
    Keywords: glycoprotein complex ; cell adhesion ; fibronectin ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: We have characterized a 140-kDa glycoprotein complex purified by a monoclonal antibody and implicated in cell adhesion to the extracellular molecule fibronectin. Three major polypeptide components were purified by monoclonal antibody JG22E, which had apparent molecular weights of 155,000 (band 1), 135,000 (band 2), and 120,000 (band 3). In two-dimensional gel electrophoresis, each subunit migrated as either a broad band or a series of spots at acidic isoelectric points. After treatment with neuraminidase, the spots became focused around pH 6.2 (band 1), pH 5.6 (band 2), and pH 5.3 (band 3). These three major bands were compared by two-dimensional peptide mapping in a series of pairwise combinations and were found to be distinct proteins. In sucrose gradients, these proteins co-migrated as a complex sedimenting at approximately 8.4 S either before or after affinity purification, whereas separated subunits migrated at 4.7 to 5.8 S. Amino acid analysis revealed no detectable hydroxyproline and a composition characterized by a substantial number of cysteine residues compared to the average protein. Our results suggest that a noncovalent complex of structurally distinct glycoproteins is involved in adhesive interactions of fibronectin with cells.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280409
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  • 8
    Electronic Resource
    Electronic Resource
    Human keratinocytes that have not terminally differentiated synthesize laminin and fibronectin but deposit only fibronectin in the pericellular matrix (1985)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 28 (1985), S. 127-141 
    Details
    ISSN: 0730-2312
    Keywords: keratinocytes ; fibronectin ; laminin ; extracellular matrix ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Fibronectin and laminin production by human keratinocytes cultured in serum-free, low-calcium medium without a fibroblast feeder layer were examined by several techniques. By indirect immunofluorescence, fibronectin but not laminin appeared as short radial fibrils between the cells and the substratum, and in the pericellular matrix. Synthesis of fibronectin and laminin by 7-day keratinocyte cultures was determined by 18 hr 35S-methionine metabolic labeling followed by sodium dodecyl sulfate polyacrylamide gel electrophoresis and autoradiography. Fibronectin accounted for 2.9% of total synthesized protein, 26.5% of fluid phase protein secretion, and 4.3% of deposited ECM protein. In contrast, only 0.1% of the total synthesized protein was laminin, little (6.3%) of this product was secreted, and none of this product was deposited in the ECM. Our results indicate that human keratinocytes under culture conditions that prevent terminal differentiation in vitro can synthesize, secrete, and deposit fibronectin in the extracellular matrix. Although these cells synthesize laminin, they secrete very little and deposit no detectable laminin in the matrix under these culture conditions. From these data we believe that fibronectin may play an important role in the interaction of epidermal cells with connective tissue matrix during wound healing or morphogenesis in in vivo situations in which the epidermis is not terminally differentiated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240280206
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  • 9
    Electronic Resource
    Electronic Resource
    Abstracts of the proceedings of a workshop on “Standardization of metal surgical implants for orthopedic surgery” Presented by the Subcommittee on Surgical Devices of the Committee on the Skeletal System, National Research Council, Washington, D.C., May 17-18, 1968. (1970)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 4 (1970), S. 245-258 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820040205
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  • 10
    Electronic Resource
    Electronic Resource
    Heparin sorptivity and blood compatibility of carbon surfaces (1970)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 4 (1970), S. 145-187 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The influences of the conditioning treatments, surface topography, and crystal structure of carbonaceous surfaces on their ability to sorb heparin and their in vivo compatibility with blood were investigated. The results of the sorption studies indicated that the adsorption of heparin on the surfaces of turbostratic and graphitic materials is not crystallographically selective and that the amount adsorbed on relatively smooth surfaces is near the amount expected for monolayer formation. Although the adsorption of heparin on relatively smooth carbon surfaces is not influenced by the presence of benzalkonium chloride, the sorption of heparin in porous carbons can be greatly increased by a pretreatment with benzalkonium chloride. This increase was found to be due to the formation and entrapment of the insoluble heparin-benzalkonium complex in the accessible porosity. Since the heparin sorptions in Dag-154 coatings were found to be enhanced by a pretreatment with benzalkonium chloride, it was inferred that these coatings contain accessible porosity and that their initial thromboresistance depends on the formation of the benzalkonium-heparin complex in pores. In vivo tests showed that polished and outgassed, impermeable isotropic carbons deposited at low temperatures were significantly thromboresistant without the exogenous application of heparin. There was no relationship between the amount of heparin sorbed on these materials and their compatibility with blood. Polishing, for example, which reduced heparin sorption, enhanced the thromboresistance of these carbons, and while chemisorption of oxygen markedly reduced their thromboresistance, it did not influence the amount of heparin that could be sorbed. Although the heparin-benzalkonium complex sorbed in a porous carbon conferred excellent thromoboresistance in a 2-hr test, the long-tern (14-day) compatibility was not as good as for carbon surfaces that were deposited at low temperatures and then polished and outgassed prior to implanting. In vivo tests of HTI carbon structures and annealed LTI carbons indicate that the blood compatibility of a turbostratic carbon is not significantly dependent on crystallite size, Le. Limited tests of surfaces that had a preponderance of c-faces oriented parallel to the blood-carbon interface at the surface suggest that orientations of this sort are better than others.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820040202
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