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Regulation of RSPO3-LGR4 Signaling: Emerging Role in Inflammation Revealed by Network Analysis.

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  • 1Department of Translational Research, Western University of Health Sciences, Pomona, California 91766, USA.

Archives of Clinical and Biomedical Research
|December 3, 2025
PubMed
Summary
This summary is machine-generated.

RSPO3 and LGR4 interaction enhances Wnt signaling and inflammation. In silico analysis identified potential therapeutic targets for inflammatory conditions, paving the way for new anti-inflammatory agents.

Keywords:
CytokinesDownstream regulationIn silico analysisInflammationKinasesLGR4RSPO3Transcription factorsUpstream regulationWnt signalingmicroRNAs

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Area of Science:

  • Molecular Biology
  • Immunology
  • Systems Biology

Background:

  • RSPO3, a secreted R-spondin family member, potentiates the canonical Wnt signaling pathway.
  • RSPO3 binds LGR4 (GPR48), a G-protein-coupled receptor, to activate Wnt signaling, though LGR-independent activation also occurs.
  • Both RSPO3 and LGR4 are implicated in inflammatory processes, including NLRP3 inflammasome activation and NF-κB signaling.

Purpose of the Study:

  • To elucidate the signaling cascade between RSPO3 and LGR4 in the context of inflammation.
  • To identify potential therapeutic targets for inflammatory conditions through in silico analysis.

Main Methods:

  • In silico network analysis of protein-protein, transcription factor-gene, and microRNA-gene interactions.
  • Utilized a gene input list comprising Wnt pathway proteins, downstream molecules, and inflammatory mediators associated with RSPO3 and LGR4.

Main Results:

  • The RSPO3-LGR4 interaction activates the NLRP3 inflammasome and β-catenin-NF-κB signaling.
  • Endothelial RSPO3 promotes regeneration via the RSPO3-LGR4-ILK-AKT pathway in vitro.
  • Network analysis revealed potential molecular targets for anti-inflammatory therapies.

Conclusions:

  • The RSPO3-LGR4 axis plays a significant role in inflammatory signaling pathways.
  • In silico analysis provides a foundation for identifying novel therapeutic targets for inflammatory diseases.
  • Further in vitro and in vivo studies are required to validate predicted pathways and therapeutic potential.