دورية أكاديمية
Dexamethasone accelerates muscle regeneration by modulating kinesin-1-mediated focal adhesion signals
| العنوان: | Dexamethasone accelerates muscle regeneration by modulating kinesin-1-mediated focal adhesion signals |
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| المؤلفون: | Jong-Wei Lin, Yi-Man Huang, Yin-Quan Chen, Ting-Yun Chuang, Tien-Yun Lan, Yen-Wenn Liu, Hung-Wei Pan, Li-Ru You, Yang-Kao Wang, Keng-hui Lin, Arthur Chiou, Jean-Cheng Kuo |
| المصدر: | Cell Death Discovery, Vol 7, Iss 1, Pp 1-16 (2021) |
| بيانات النشر: | Nature Publishing Group, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Neoplasms. Tumors. Oncology. Including cancer and carcinogens LCC:Cytology |
| مصطلحات موضوعية: | Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282, Cytology, QH573-671 |
| الوصف: | Abstract During differentiation, skeletal muscle develops mature multinucleated muscle fibers, which could contract to exert force on a substrate. Muscle dysfunction occurs progressively in patients with muscular dystrophy, leading to a loss of the ability to walk and eventually to death. The synthetic glucocorticoid dexamethasone (Dex) has been used therapeutically to treat muscular dystrophy by an inhibition of inflammation, followed by slowing muscle degeneration and stabilizing muscle strength. Here, in mice with muscle injury, we found that Dex significantly promotes muscle regeneration via promoting kinesin-1 motor activity. Nevertheless, how Dex promotes myogenesis through kinesin-1 motors remains unclear. We found that Dex directly increases kinesin-1 motor activity, which is required for the expression of a myogenic marker (muscle myosin heavy chain 1/2), and also for the process of myoblast fusion and the formation of polarized myotubes. Upon differentiation, kinesin-1 mediates the recruitment of integrin β1 onto microtubules allowing delivery of the protein into focal adhesions. Integrin β1-mediated focal adhesion signaling then guides myoblast fusion towards a polarized morphology. By imposing geometric constrains via micropatterns, we have proved that cell adhesion is able to rescue the defects caused by kinesin-1 inhibition during the process of myogenesis. These discoveries reveal a mechanism by which Dex is able to promote myogenesis, and lead us towards approaches that are more efficient in improving skeletal muscle regeneration. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2058-7716 |
| Relation: | https://doaj.org/toc/2058-7716 |
| DOI: | 10.1038/s41420-021-00412-4 |
| URL الوصول: | https://doaj.org/article/cd301d2754094fefb84937d3722f7547 |
| رقم الأكسشن: | edsdoj.301d2754094fefb84937d3722f7547 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20587716 |
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| DOI: | 10.1038/s41420-021-00412-4 |