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| Content Provider | MDPI |
|---|---|
| Author | Karlsson, Páll Droce, Aida Moser, Jakob Cuhlmann, Simon Padilla, Carolina Heimann, Peter Bartsch, Jörg Füchtbauer, Annette Füchtbauer, Ernst-Martin Schmitt-John, Thomas |
| Abstract | The identification of the mutation causing the phenotype of the amyotrophic lateral sclerosis (ALS) model mouse, wobbler, has linked motor neuron degeneration with retrograde vesicle traffic. The wobbler mutation affects protein stability of Vps54, a ubiquitously expressed vesicle-tethering factor and leads to partial loss of Vps54 function. Moreover, the Vps54 null mutation causes embryonic lethality, which is associated with extensive membrane blebbing in the neural tube and is most likely a consequence of impaired vesicle transport. Investigation of cells derived from wobbler and Vps54 null mutant embryos demonstrates impaired retrograde transport of the Cholera-toxin B subunit to the trans-Golgi network and mis-sorting of mannose-6-phosphate receptors and cargo proteins dependent on retrograde vesicle transport. Endocytosis assays demonstrate no difference between wobbler and wild type cells, indicating that the retrograde vesicle traffic to the trans-Golgi network, but not endocytosis, is affected in Vps54 mutant cells. The results obtained on wobbler cells were extended to test the use of cultured skin fibroblasts from human ALS patients to investigate the retrograde vesicle traffic. Analysis of skin fibroblasts of ALS patients will support the investigation of the critical role of the retrograde vesicle transport in ALS pathogenesis and might yield a diagnostic prospect. |
| File Size | 1780736 |
| Ending Page | 10925 |
| Page Count | 18 |
| Starting Page | 10908 |
| File Format | |
| e-ISSN | 14220067 |
| DOI | 10.3390/ijms140610908 |
| Journal | International Journal of Molecular Sciences |
| Issue Number | 6 |
| Volume Number | 14 |
| Language | English |
| Publisher Date | 2013-05-24 |
| Access Restriction | Open |
| Subject Keyword | Vps54 wobbler ALS GARP complex retrograde vesicle transport |
| Content Type | Text |
| Resource Type | Article |
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