Nitric oxide/cyclic GMP signaling regulates motility of a microglial cell line and primary microglia in vitro

Related Experiment Video

Updated: May 1, 2026

Measurement of Cyclic Guanosine Monophosphate (cGMP) in Solid Tissues using Competitive Enzyme-Linked Immunosorbent Assay (ELISA)
07:15

Measurement of Cyclic Guanosine Monophosphate (cGMP) in Solid Tissues using Competitive Enzyme-Linked Immunosorbent Assay (ELISA)

Published on: July 3, 2025

846

Hannah Scheiblich1, Frank Roloff1, Vikramjeet Singh2

  • 1Division of Cell Biology, University of Veterinary Medicine Hannover, Bischofsholer Damm 15/102, D-30173 Hannover, Germany.

Brain Research
|April 10, 2014
PubMed

Insights

Nitric oxide (NO) signals through cyclic GMP (cGMP) to promote microglial cell migration during brain inflammation. This NO/cGMP pathway is crucial for immune cell movement in neurological conditions.

Area of Science:

  • Neuroimmunology
  • Cellular Neuroscience
  • Molecular Biology

Background:

  • Microglia are brain immune cells that activate and migrate during infection and disease.
  • Activated microglia produce nitric oxide (NO), a messenger molecule impacting cellular functions.
  • NO influences cyclic guanosine monophosphate (cGMP) levels via soluble guanylyl cyclase.

Purpose of the Study:

  • To investigate the mechanistic links between inflammation, NO signaling, and microglial cell migration.
  • To compare the migratory responses of primary microglia and the BV-2 microglial cell line.

Main Methods:

  • Utilized a scratch wound assay to monitor microglial cell migration.
  • Compared responses of BV-2 microglial cells and primary microglia.
  • Stimulated cells with lipopolysaccharide (LPS) and manipulated NO/cGMP pathways using donors, scavengers, and inhibitors.

Main Results:

  • Lipopolysaccharide (LPS) enhanced migration in both BV-2 and primary microglia.
  • NO donors increased migration, while NO scavengers reduced it, confirming NO's role.
  • Inhibition of soluble guanylyl cyclase impaired motility, which was rescued by a cGMP analog.

Conclusions:

  • Nitric oxide (NO) acts as a positive regulator of microglial migration via the NO/cGMP signaling pathway.
  • Microglial cell lines like BV-2 are suitable models for studying NO/cGMP signaling in migration and cytoskeletal changes.
  • Understanding this pathway is vital for addressing inflammatory responses in brain diseases.
Keywords:
BV-2 cellsCytoskeletonInflammationPrimary microgliaiNOS

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