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Updated: Jun 7, 2025

Modeling Paracrine Noncanonical Wnt Signaling In Vitro
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Wnt signalosomes: What we know that we do not know

Heather Hartmann1, Ghalia Saad Siddiqui2, Jamal Bryant3

  • 1Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|November 9, 2024
PubMed

Insights

The Wnt/β-catenin pathway involves three key complexes. This review explores signalosome composition and assembly regulation, including biomolecular condensates and ubiquitylation, crucial for tissue homeostasis and cancer prevention.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Cancer Biology

Background:

  • The Wnt/β-catenin pathway is critical for tissue homeostasis.
  • Dysregulated Wnt signaling, driven by aberrant receptor activity, contributes to tumorigenesis.
  • Understanding signalosome assembly is vital for controlling Wnt signaling.

Purpose of the Study:

  • To review the composition of the Wnt/β-catenin signalosome.
  • To elucidate mechanisms regulating signalosome assembly.
  • To discuss Wnt ligand-independent signalosome formation.

Main Methods:

  • Literature review of Wnt/β-catenin signaling.
  • Analysis of studies on signalosome components and assembly.
  • Examination of roles for biomolecular condensates and ubiquitylation.

Main Results:

  • The Wnt/β-catenin pathway utilizes membrane-associated signalosome, cytoplasmic destruction complex, and nuclear enhanceosome.
  • Signalosome assembly is regulated by factors including biomolecular condensates and ubiquitylation.
  • Evidence suggests Wnt ligand-independent signalosome formation occurs.

Conclusions:

  • Signalosome composition and assembly regulation are key to Wnt/β-catenin pathway control.
  • Biomolecular condensates and ubiquitylation are important regulatory mechanisms.
  • Further research into Wnt ligand-independent formation may reveal new therapeutic targets.
Keywords:
Wnt signalingsignalosomeubiquitylation

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