Failures of nerve regeneration caused by aging or chronic denervation are rescued by restoring Schwann cell c-Jun
| Autor: | Wagstaff LJ, Gomez-Sanchez JA, Fazal SV, Otto GW, Kilpatrick AM, Michael K, Wong LYN, Ma KH, Turmaine M, Svaren J, Gordon T, Arthur-Farraj P, Velasco-Aviles S, Cabedo H, Benito C, Mirsky R, Jessen KR |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | eLife r-ISABIAL. Repositorio Institucional de Producción Científica del Instituto de Investigación Biomédica y Sanitaria de Alicante instname |
| ISSN: | 2050-084X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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