The WNT signaling pathway from ligand secretion to gene transcription: molecular mechanisms and pharmacological

Hoeke A Baarsma1, Melanie Königshoff, Reinoud Gosens

  • 1Department of Molecular Pharmacology, GRIAC research institute, University of Groningen, Groningen, The Netherlands.

Insights

Wingless/integrase-1 (WNT) signaling regulates development and disease. Understanding WNT pathway molecular processes offers new therapeutic targets for cancers and fibroproliferative diseases.

Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Cell Signaling

Background:

  • Wingless/integrase-1 (WNT) signaling is crucial for embryonic development.
  • Aberrant WNT signaling is implicated in human pathologies, including cancers and fibroproliferative diseases.

Purpose of the Study:

  • To elucidate the molecular mechanisms of canonical WNT signal transduction.
  • To identify potential therapeutic targets and pharmacological inhibitors for WNT pathway dysregulation.

Main Methods:

  • Review of WNT ligand biogenesis and secretion.
  • Comprehensive overview of intracellular WNT signaling events.
  • Analysis of WNT-mediated gene transcription.

Main Results:

  • Detailed description of WNT pathway activation from ligand secretion to target gene transcription.
  • Identification of key molecular players in WNT signal transduction.

Conclusions:

  • Understanding WNT signaling complexity is vital for developing targeted therapies.
  • Pharmacological targeting of the WNT pathway holds promise for treating WNT-driven diseases.

Related Concept Videos

Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...
Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...
Non-Canonical Wnt Signaling Pathways01:41

Non-Canonical Wnt Signaling Pathways

Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
Non-Canonical Wnt Signaling Pathways01:41

Non-Canonical Wnt Signaling Pathways

Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
Signal Transduction: Overview01:26

Signal Transduction: Overview

Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include: