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Related Concept Videos

G-protein Coupled Receptors01:21

G-protein Coupled Receptors

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G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
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Neurogenesis and Regeneration of Nervous Tissue01:15

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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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G Protein-coupled Receptors01:15

G Protein-coupled Receptors

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G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
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IP3/DAG Signaling Pathway01:11

IP3/DAG Signaling Pathway

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Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
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GPCR Desensitization01:12

GPCR Desensitization

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G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
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Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

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Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
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Related Experiment Video

Updated: Jan 11, 2026

Experimental Demyelination and Remyelination of Murine Spinal Cord by Focal Injection of Lysolecithin
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G Protein-Coupled Receptor Signaling in CNS (Re)Myelination.

Jack K McDonald1,2, Sheng Yu Ang1,2, Christopher J Langmead1,2,3

  • 1Drug Discovery Biology and Neuroscience & Mental Health Therapeutic Program Area, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Australia.

Journal of Neurochemistry
|November 19, 2025
PubMed
Summary
This summary is machine-generated.

Oligodendroglial cells are vital for brain health and repair. Targeting G protein-coupled receptors (GPCRs) in these cells offers a promising strategy for developing new remyelination therapies for neurological diseases.

Keywords:
GPCR signalingmyelinationneuropharmacology

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Pharmacology

Background:

  • Oligodendroglial cells are crucial for maintaining brain function and repairing myelin damage in neurological disorders.
  • A reserve of oligodendrocyte precursor cells in the adult brain supports myelin network plasticity and repair.
  • G protein-coupled receptors (GPCRs) are widely expressed in oligodendroglia and represent key drug targets.

Purpose of the Study:

  • To explore the functional consequences of modulating GPCRs in oligodendroglia.
  • To identify potential therapeutic targets for promoting remyelination and treating demyelinating diseases.

Main Methods:

  • Investigated the role of GPCRs in oligodendroglial cell function.
  • Examined the effects of GPCR modulation on myelin repair mechanisms.

Main Results:

  • The functional outcomes of GPCR modulation in oligodendroglia are not yet fully understood.
  • This knowledge gap has impeded the development of effective remyelinating therapies.

Conclusions:

  • Targeting GPCRs in oligodendroglia is a viable therapeutic strategy for remyelination.
  • Further research into GPCR function is essential for advancing treatments for demyelinating and neurodegenerative diseases.