Cited by 453Autophagy in Disease and TherapyNerve injury and regenerationHereditary Neurological Disorders

Schwann cell autophagy, myelinophagy, initiates myelin clearance from injured nerves

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Gomez-Sanchez, Jose A., Carty, Lucy, Iruarrizaga-Lejarreta, Marta, Palomo-Irigoyen, Marta, Varela-Rey, Marta, Griffith, Megan, Hantke, Janina, Macias-Camara, Nuria +13 more·2015·Journal of Cell Biology

Abstract

Although Schwann cell myelin breakdown is the universal outcome of a remarkably wide range of conditions that cause disease or injury to peripheral nerves, the cellular and molecular mechanisms that make Schwann cell–mediated myelin digestion possible have not been established. We report that Schwann cells degrade myelin after injury by a novel form of selective autophagy, myelinophagy. Autophagy was up-regulated by myelinating Schwann cells after nerve injury, myelin debris was present in autophagosomes, and pharmacological and genetic inhibition of autophagy impaired myelin clearance. Myelinophagy was positively regulated by the Schwann cell JNK/c-Jun pathway, a central regulator of the Schwann cell reprogramming induced by nerve injury. We also present evidence that myelinophagy is defective in the injured central nervous system. These results reveal an important role for inductive autophagy during Wallerian degeneration, and point to potential mechanistic targets for accelerating myelin clearance and improving demyelinating disease.

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Crossref · 10.1083/jcb.201503019

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  • After nerve injury, Schwann cells oversee the capture of myelin debris in autophagosomes in a process termed myelinophagy.

    “After nerve injury, Schwann cells oversee the capture of myelin debris in autophagosomes in a process termed “myelinophagy” [459,462,463],”

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Authors
Gomez-Sanchez, J. A., Carty, L., Iruarrizaga-Lejarreta, M., Palomo-Irigoyen, M., Varela-Rey, M., Griffith, M., Hantke, J., Macias-Camara, N., Azkargorta, M., Aurrekoetxea, I., De Juan, V. G., Jefferies, H. B. J., Aspichueta, P., Elortza, F., Aransay, A. M., Martínez-Chantar, M. L., Baas, F., Mato, J. M., Mirsky, R., Woodhoo, A., & Jessen, K. R.
Affiliations
  • University College London (GB)
  • CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 48160 Derio, Bizkaia, Spain 2
  • CIC bioGUNE (ES)
  • Instituto de Salud Carlos III (ES)
  • University of the Basque Country (ES)
  • The Francis Crick Institute (GB)
  • Amsterdam UMC Location University of Amsterdam (NL)
  • Ikerbasque (ES)
Corresponding author
Woodhoo, Ashwin
Venue
Journal of Cell Biology
Published
2015-07-06
Volume
210
Issue
1
Pages
153-168
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W1655540037
Cited by
453
References
49
Citations by year
2026: 33 · 2025: 47 · 2024: 40 · 2023: 45 · 2022: 52 · 2021: 55 · 2020: 43 · 2019: 38 · 2018: 36 · 2017: 32 · 2016: 22 · 2015: 8
FWCI
25.61
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion, cc-by-nc-sa)
Funders
  • Wellcome Trust (FP7/2007–2013)
  • Francis Crick Institute (10187)
  • Cancer Research UK (15153)
  • Instituto de Salud Carlos III
  • National Center for Complementary and Integrative Health (R01AT001576)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
Schwann cells, selective autophagy, myelin debris clearance, nerve injury, Wallerian degeneration, JNK/c-Jun signaling, demyelinating disease, autophagosomes, myelin debris, central nervous system
MeSH terms
Animals, Autophagy, Cells, Cultured, Mice, Transgenic, Myelin Sheath, Sciatic Nerve, Wallerian Degeneration, Proto-Oncogene Proteins c-jun, JNK Mitogen-Activated Protein Kinases, Lipid Metabolism, TOR Serine-Threonine Kinases, Peripheral Nerve Injuries

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