Related Experiment Video

Updated: May 7, 2026

Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning
11:11

Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning

Published on: February 17, 2016

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Pde4 mediates MHCII expression in oligodendroglia

Miguel M Madeira1,2,3, Zachary Hage1,2,3, Dimitris Koliatsis1,2

  • 1Molecular and Cellular Pharmacology Graduate Program, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY 11794.

Proceedings of the National Academy of Sciences of the United States of America
|May 5, 2026
PubMed

Insights

Chronic stress triggers immune-like oligodendrocytes (ImOLs) in the brain, linked to Major Depressive Disorder (MDD). Targeting Pde4b-cAMP-integrated stress response (ISR) signaling may offer new treatments for stress-related disorders.

Area of Science:

  • Neuroscience
  • Immunology
  • Molecular Biology

Background:

  • Chronic psychosocial stress is a key factor in Major Depressive Disorder (MDD) development.
  • The specific glial mechanisms linking stress to myelin and immune alterations in MDD are not fully understood.

Purpose of the Study:

  • To investigate the role of oligodendroglia in mediating the effects of chronic stress on brain function.
  • To identify molecular targets for potential therapeutic interventions in stress-related disorders.

Main Methods:

  • Utilized chronic social defeat stress model in mice.
  • Performed single-nucleus RNA sequencing on anterior medial prefrontal cortex (mPFC) oligodendroglia.
  • Integrated findings with human MDD single-nucleus RNA sequencing data.
  • Investigated PDE4 inhibition and integrated stress response (ISR) modulation in vivo.

Main Results:

  • Identified a novel oligodendrocyte subset (ImOL) expressing immune genes (MHCII) and Pde4b, predominantly in stress-susceptible animals.
  • Confirmed conserved ImOL subset in human MDD patients.
  • PDE4 inhibition modulated cAMP signaling and blocked IFNγ-induced MHCII expression.
  • In vivo ISR modulation affected ImOL prevalence and stress-related behaviors.

Conclusions:

  • Pde4b-cAMP-ISR signaling regulates oligodendroglial immune phenotypes.
  • This pathway represents a promising target for modulating myelination and neuroinflammation in MDD and other stress-related conditions.
Keywords:
hypomyelinationimmune oligodendrocytesmajor depressive disorderneuroinflammationoligodendroglia

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