The myopathy-causing mutation DNM2-S619L leads to defective tubulation in vitro and in developing zebrafish
DNM2 is a ubiquitously expressed GTPase that regulates multiple subcellular processes. Mutations in DNM2 are a common cause of centronuclear myopathy, a severe disorder characterized by altered skeletal muscle structure and function. The precise mechanisms underlying disease-associated DNM2 mutation...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Company of Biologists
2014-01-01
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| Series: | Disease Models & Mechanisms |
| Subjects: | |
| Online Access: | http://dmm.biologists.org/content/7/1/157 |
| Summary: | DNM2 is a ubiquitously expressed GTPase that regulates multiple subcellular processes. Mutations in DNM2 are a common cause of centronuclear myopathy, a severe disorder characterized by altered skeletal muscle structure and function. The precise mechanisms underlying disease-associated DNM2 mutations are unresolved. We examined the common DNM2-S619L mutation using both in vitro and in vivo approaches. Expression of DNM2-S619L in zebrafish led to the accumulation of aberrant vesicular structures and to defective excitation-contraction coupling. Expression of DNM2-S619L in COS7 cells resulted in defective BIN1-dependent tubule formation. These data suggest that DNM2-S619L causes disease, in part, by interfering with membrane tubulation. |
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| ISSN: | 1754-8403 1754-8411 |