| First Author | Yokoi F | Year | 2010 |
| Journal | J Biochem | Volume | 148 |
| Issue | 4 | Pages | 459-66 |
| PubMed ID | 20627944 | Mgi Jnum | J:178131 |
| Mgi Id | MGI:5297324 | Doi | 10.1093/jb/mvq078 |
| Citation | Yokoi F, et al. (2010) Earlier onset of motor deficits in mice with double mutations in Dyt1 and Sgce. J Biochem 148(4):459-66 |
| abstractText | DYT1 early-onset generalized torsion dystonia is an inherited movement disorder caused by mutations in DYT1 coding for torsinA with approximately 30% penetrance. Most of the DYT1 dystonia patients exhibit symptoms during childhood and adolescence. On the other hand, DYT1 mutation carriers without symptoms during these periods mostly do not exhibit symptoms later in their life. Little is known about what controls the timing of the onset, a critical issue for DYT1 mutation carriers. DYT11 myoclonus-dystonia is caused by mutations in SGCE coding for epsilon-sarcoglycan. Two dystonia patients from a single family with double mutations in DYT1 and SGCE exhibited more severe symptoms. A recent study suggested that torsinA contributes to the quality control of epsilon-sarcoglycan. Here, we derived mice carrying mutations in both Dyt1 and Sgce and found that these double mutant mice showed earlier onset of motor deficits in beam-walking test. A novel monoclonal antibody against mouse epsilon-sarcoglycan was developed by using Sgce knock-out mice to avoid the immune tolerance. Western blot analysis suggested that functional deficits of torsinA and epsilon-sarcoglycan may independently cause motor deficits. Examining additional mutations in other dystonia genes may be beneficial to predict the onset in DYT1 mutation carriers. |
