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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Bauer, Jan Fuchs, Peter Walko, Gernot Propst, Friedrich Lüscher, Bernhard Fischer, Irmgard Rezniczek, Günther A. Zörer, Michael Leschnik, Michael W. Lassmann, Hans Wiche, Gerhard Reipert, Siegfried Thalhammer, Johann G. |
| Description | Author Affiliation: Fuchs P ( Department of Biochemistry and Cell Biology, Max F Perutz Laboratories, University of Vienna, 1030 Vienna, Austria.) |
| Abstract | Cytolinker proteins stabilize cells mechanically, regulate cytoskeleton dynamics, and provide scaffolds for signaling molecules. For plectin, the prototype of these proteins, an unusual diversity of isoforms has been reported, which show distinct expression patterns, subcellular localizations, and functions. Plectin has been shown to have important functions in skin and muscle, but little is known about its role in neural cells. To address this issue, we generated two knock-out mouse lines, one which was selectively lacking plectin 1c (P1c), the major isoform expressed in neural cells, and another in which plectin was conditionally deleted in neuronal precursor cells. Using isoform-specific antibodies, we found P1c to be expressed late in development and to associate with postsynaptic dendrites of central nervous system neurons, motorneurons of spinal cord, sciatic nerve axons, and Schwann cells. Motor nerve conduction velocity was found significantly reduced in sciatic nerve from P1c-deficient as well as from conditional knock-out mice. This defect was traceable to an increased number of motor nerve fibers with small cross-sectional areas; the thicknesses of axons and of myelin sheaths were unaffected. This is the first report demonstrating an important role of plectin in a major nerve function. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 39 |
| Volume Number | 284 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2009-09-25 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Targeting Motor Neurons Physiology Neural Conduction Plectin Metabolism Animals Central Nervous System Genotype Immunoblotting Immunohistochemistry Mice Mice, Inbred C57BL Mice, Knockout Microscopy, Electron Microscopy, Fluorescence Genetics Protein Isoforms Ranvier's Nodes Ultrastructure Sciatic Nerve Spinal Cord Spinal Nerve Roots Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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