Astrocyte-oligodendrocyte interaction regulates central nervous system regeneration

Irene Molina-Gonzalez, Rebecca K. Holloway, Zoeb Jiwaji, Owen Dando, Sarah A. Kent, Katie Emelianova, Amy F. Lloyd, Lindsey H. Forbes, Ayisha Mahmood, Thomas Skripuletz, Viktoria Gudi, James A. Febery, Jeffrey A. Johnson, Jill H. Fowler, Tanja Kuhlmann, Anna Williams, Siddharthan Chandran, Martin Stangel, Andrew J. M. Howden, Giles E. HardinghamVeronique E. Miron (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
117 Downloads (Pure)

Abstract

Failed regeneration of myelin around neuronal axons following central nervous system damage contributes to nerve dysfunction and clinical decline in various neurological conditions, for which there is an unmet therapeutic demand. Here, we show that interaction between glial cells - astrocytes and mature myelin-forming oligodendrocytes - is a determinant of remyelination. Using in vivo/ ex vivo/ in vitro rodent models, unbiased RNA sequencing, functional manipulation, and human brain lesion analyses, we discover that astrocytes support the survival of regenerating oligodendrocytes, via downregulation of the Nrf2 pathway associated with increased astrocytic cholesterol biosynthesis pathway activation. Remyelination fails following sustained astrocytic Nrf2 activation in focally-lesioned male mice yet is restored by either cholesterol biosynthesis/efflux stimulation, or Nrf2 inhibition using the existing therapeutic Luteolin. We identify that astrocyte-oligodendrocyte interaction regulates remyelination, and reveal a drug strategy for central nervous system regeneration centred on targeting this interaction.

Original languageEnglish
Article number3372
Number of pages18
JournalNature Communications
Volume14
DOIs
Publication statusPublished - 8 Jun 2023

Keywords

  • Male
  • Mice
  • Animals
  • Humans
  • Astrocytes/metabolism
  • NF-E2-Related Factor 2/genetics
  • Central Nervous System/metabolism
  • Oligodendroglia/metabolism
  • Myelin Sheath/metabolism
  • Nerve Regeneration/physiology
  • Cholesterol/metabolism

ASJC Scopus subject areas

  • General Physics and Astronomy
  • General Chemistry
  • General Biochemistry,Genetics and Molecular Biology

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