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Canonical Wnt Signaling Pathway

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 Pathway

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 Pathways

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 Pathways

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...

Dosage Compensation

Dosage Compensation

In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will have...

Catenins

Catenins

Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
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Related Experiment Video

Updated: Jun 2, 2026

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

Published on: December 14, 2015

Generating a Wnt switch: it's all about the right dosage.

Hans A Kestler¹, Michael Kühl

¹Institute for Neural Information Processing, Ulm University, D-89081 Ulm, Germany.

The Journal of Cell Biology

|May 4, 2011

Summary

This summary is machine-generated.

Different Wnt protein concentrations activate distinct Wnt signaling pathways. This concentration-dependent specificity provides insights into how Wnt gradients guide embryonic tissue patterning.

More Related Videos

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Published on: December 10, 2021

Related Experiment Videos

Last Updated: Jun 2, 2026

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

Published on: December 14, 2015

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Published on: December 10, 2021

Area of Science:

Cell Biology
Developmental Biology
Molecular Biology

Background:

Wnt proteins are crucial signaling molecules involved in various cellular processes.
The Wnt signaling pathway is complex, with multiple branches potentially activated by Wnt ligands.
Understanding the specificity of Wnt ligand activation is essential for deciphering its biological roles.

Discussion:

Nalesso et al. demonstrate that varying concentrations of Wnt ligands trigger different intracellular responses.
This concentration-dependent signaling mechanism addresses the question of specificity in Wnt pathway activation.
The findings highlight the intricate molecular mechanisms governing Wnt signal transduction.

Key Insights:

Different Wnt concentrations lead to distinct intracellular signaling outcomes.
Wnt signaling specificity is regulated by ligand concentration.
This provides a mechanistic explanation for how Wnt gradients pattern tissues.

Outlook:

Further research can explore the precise molecular players mediating concentration-dependent Wnt responses.
These insights can advance our understanding of developmental processes and diseases linked to Wnt signaling.
Investigating Wnt gradients in other developmental contexts will be crucial.