Deficiency of microglial Hv1 channel is associated with activation of autophagic pathway and ROS production in LPC-induced demyelination mouse model

Man Chen, Lin Lin Yang, Zi Wei Hu, Chuan Qin, Luo Qi Zhou, Ya ling Duan, Dale B. Bosco, Long Jun Wu, Ke Bin Zhan, Sha Bei Xu, Dai Shi Tian

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Multiple sclerosis (MS) is an immune-mediated demyelinated disease of the central nervous system. Activation of microglia is involved in the pathogenesis of myelin loss. Objective: This study is focused on the role of Hv1 in regulating demyelination and microglial activation through reactive oxygen species (ROS) production after lysophosphatidylcholine (LPC)-mediated demyelination. We also explored autophagy in this process. Methods: A model of demyelination using two-point LPC injection into the corpus callosum was established. LFB staining, immunofluorescence, Western blot, and electron microscopy were used to study the severity of demyelination. Microglial phenotype and autophagy were detected by immunofluorescence and Western blot. Morris water maze was used to test spatial learning and memory ability. Results: We have identified that LPC-mediated myelin damage was reduced by Hv1 deficiency. Furthermore, we found that ROS and autophagy of microglia increased in the demyelination region, which was also inhibited by Hv1 knockout. Conclusion: These results suggested that microglial Hv1 deficiency ameliorates demyelination through inhibition of ROS-mediated autophagy and microglial phenotypic transformation.

Original languageEnglish (US)
Article number333
JournalJournal of Neuroinflammation
Volume17
Issue number1
DOIs
StatePublished - Dec 1 2020

Keywords

  • Autophagy
  • Demyelination
  • Microglia
  • Neuroinflammation
  • ROS

ASJC Scopus subject areas

  • Neuroscience(all)
  • Immunology
  • Neurology
  • Cellular and Molecular Neuroscience

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