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Electron microscopic observations of triple immunogold labelling for dystrophin, beta-dystroglycan and adhalin in human skeletal myofibers. 1996

M Inoue, and Y Wakayama, and M Murahashi, and S Shibuya, and T Jimi, and H Kojima, and H Oniki
Department of Medicine, Showa University Fujigaoka Hospital, Yokohama, Japan.

Dystrophin is the Duchenne muscular dystrophy gene product and is a membrane cytoskeletal protein present in the network of the plasma membrane undercoat. Adhalin (50 kDa dystrophin-associated glycoprotein) and beta-dystroglycan (43 kDa dystrophin-associated glycoprotein) are the transmembrane components of the normal muscle plasma membrane, and beta-dystroglycan has been demonstrated to bind dystrophin at the inside surface of normal muscle plasma membrane. This investigation was undertaken to test whether the epitopes of dystrophin, beta-dystroglycan and adhalin are closely associated with each other by using triple immunogold labelling electron microscopy on normal human skeletal myofibers. Although closely associated signals of triplet immunogold particles were observed, there were less numerous than expected. However, closely associated signals of two epitopes of dystrophin and beta-dystroglycan, dystrophin and adhalin, or adhalin and beta-dystroglycan were frequently observed. These ultrastructural findings are consistent with biochemical evidence implying that dystrophin, beta-dystroglycan and adhalin are closely associated with each other at the normal muscle plasma membrane.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008562 Membrane Glycoproteins Glycoproteins found on the membrane or surface of cells. Cell Surface Glycoproteins,Surface Glycoproteins,Cell Surface Glycoprotein,Membrane Glycoprotein,Surface Glycoprotein,Glycoprotein, Cell Surface,Glycoprotein, Membrane,Glycoprotein, Surface,Glycoproteins, Cell Surface,Glycoproteins, Membrane,Glycoproteins, Surface,Surface Glycoprotein, Cell,Surface Glycoproteins, Cell
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D003598 Cytoskeletal Proteins Major constituent of the cytoskeleton found in the cytoplasm of eukaryotic cells. They form a flexible framework for the cell, provide attachment points for organelles and formed bodies, and make communication between parts of the cell possible. Proteins, Cytoskeletal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015151 Immunoblotting Immunologic method used for detecting or quantifying immunoreactive substances. The substance is identified by first immobilizing it by blotting onto a membrane and then tagging it with labeled antibodies. Dot Immunoblotting,Electroimmunoblotting,Immunoelectroblotting,Reverse Immunoblotting,Immunoblotting, Dot,Immunoblotting, Reverse,Dot Immunoblottings,Electroimmunoblottings,Immunoblottings,Immunoblottings, Dot,Immunoblottings, Reverse,Immunoelectroblottings,Reverse Immunoblottings
D016189 Dystrophin A muscle protein localized in surface membranes which is the product of the Duchenne/Becker muscular dystrophy gene. Individuals with Duchenne muscular dystrophy usually lack dystrophin completely while those with Becker muscular dystrophy have dystrophin of an altered size. It shares features with other cytoskeletal proteins such as SPECTRIN and alpha-actinin but the precise function of dystrophin is not clear. One possible role might be to preserve the integrity and alignment of the plasma membrane to the myofibrils during muscle contraction and relaxation. MW 400 kDa.
D016253 Microscopy, Immunoelectron Microscopy in which the samples are first stained immunocytochemically and then examined using an electron microscope. Immunoelectron microscopy is used extensively in diagnostic virology as part of very sensitive immunoassays. Immunoelectron Microscopy,Microscopy, Immuno-Electron,Immuno-Electron Microscopies,Immuno-Electron Microscopy,Immunoelectron Microscopies,Microscopies, Immuno-Electron,Microscopies, Immunoelectron,Microscopy, Immuno Electron
D049030 Dystroglycans Dystrophin-associated proteins that play role in the formation of a transmembrane link between laminin-2 and DYSTROPHIN. Both the alpha and the beta subtypes of dystroglycan originate via POST-TRANSLATIONAL PROTEIN PROCESSING of a single precursor protein. Dystroglycan,Cranin,Dystroglycan 1,Dystrophin-Associated Glycoprotein 1,alpha-Dystroglycan,beta-Dystroglycan,Dystrophin Associated Glycoprotein 1,alpha Dystroglycan,beta Dystroglycan
D049031 Sarcoglycans A family of transmembrane dystrophin-associated proteins that play a role in the membrane association of the DYSTROPHIN-ASSOCIATED PROTEIN COMPLEX. Sarcoglycan,beta-Sarcoglycan,43-kDa Dystrophin-Associated Glycoprotein,50-kDa Dystrophin-Associated glycoprotein,Adhalin,Sarcoglycan Complex,Sarcoglycan Complexes,alpha-Sarcoglycan,delta-Sarcoglycan,epsilon-Sarcoglycan,gamma-Sarcoglycan,zeta-Sarcoglycan,43 kDa Dystrophin Associated Glycoprotein,50 kDa Dystrophin Associated glycoprotein,Complex, Sarcoglycan,Complexes, Sarcoglycan,Dystrophin-Associated Glycoprotein, 43-kDa,Dystrophin-Associated glycoprotein, 50-kDa,Glycoprotein, 43-kDa Dystrophin-Associated,alpha Sarcoglycan,beta Sarcoglycan,delta Sarcoglycan,epsilon Sarcoglycan,gamma Sarcoglycan,glycoprotein, 50-kDa Dystrophin-Associated,zeta Sarcoglycan

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