Failures of nerve regeneration caused by aging or chronic denervation are rescued by restoring Schwann cell c-Jun
| Title: | Failures of nerve regeneration caused by aging or chronic denervation are rescued by restoring Schwann cell c-Jun |
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| Authors: | Laura J Wagstaff, Jose A Gomez-Sanchez, Shaline V Fazal, Georg W Otto, Alastair M Kilpatrick, Kirolos Michael, Liam YN Wong, Ki H Ma, Mark Turmaine, John Svaren, Tessa Gordon, Peter Arthur-Farraj, Sergio Velasco-Aviles, Hugo Cabedo, Cristina Benito, Rhona Mirsky, Kristjan R Jessen |
| Source: | eLife, Vol 10 (2021) |
| Publisher Information: | eLife Sciences Publications Ltd, 2021. |
| Publication Year: | 2021 |
| Collection: | LCC:Medicine LCC:Science LCC:Biology (General) |
| Subject Terms: | nerve regeneration, schwann cell, c-Jun, aging, chronic denervation, repair cell, Medicine, Science, Biology (General), QH301-705.5 |
| More Details: | After nerve injury, myelin and Remak Schwann cells reprogram to repair cells specialized for regeneration. Normally providing strong regenerative support, these cells fail in aging animals, and during chronic denervation that results from slow axon growth. This impairs axonal regeneration and causes significant clinical problems. In mice, we find that repair cells express reduced c-Jun protein as regenerative support provided by these cells declines during aging and chronic denervation. In both cases, genetically restoring Schwann cell c-Jun levels restores regeneration to control levels. We identify potential gene candidates mediating this effect and implicate Shh in the control of Schwann cell c-Jun levels. This establishes that a common mechanism, reduced c-Jun in Schwann cells, regulates success and failure of nerve repair both during aging and chronic denervation. This provides a molecular framework for addressing important clinical problems, suggesting molecular pathways that can be targeted to promote repair in the PNS. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2050-084X |
| Relation: | https://elifesciences.org/articles/62232; https://doaj.org/toc/2050-084X |
| DOI: | 10.7554/eLife.62232 |
| Access URL: | https://doaj.org/article/71cf5cebbc4d40f8b6b3a29c0b196abc |
| Accession Number: | edsdoj.71cf5cebbc4d40f8b6b3a29c0b196abc |
| Database: | Directory of Open Access Journals |
| ISSN: | 2050084X |
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| DOI: | 10.7554/eLife.62232 |
| Published in: | eLife |
| Language: | English |