Related Experiment Video
Updated: Aug 8, 2026

11:14
Modeling Paracrine Noncanonical Wnt Signaling In Vitro
Published on: December 10, 2021
WNT/Frizzled signaling in eye development and disease
Robbert U de Iongh1, Helen E Abud, Gary R Hime
1Department of Anatomy and Cell Biology, The University of Melbourne, Parkville VIC 3052, Australia. r.deIongh@unimelb.edu.au
Summary
Wnt/Fzd signaling pathways are crucial for eye development and function across species. Understanding these pathways offers potential for treating blinding eye diseases.
Area of Science:
- Developmental Biology
- Genetics
- Ophthalmology
Background:
- Wnt/Fzd signaling pathways are conserved across species and play roles in development.
- Both canonical and non-canonical Wnt pathways are implicated in vertebrate eye development.
- Drosophila studies have provided significant insights into Wnt/Fzd roles in ocular development.
Purpose of the Study:
- To review the conserved roles of Wnt/Fzd signaling in eye development across species.
- To highlight parallels between invertebrate and vertebrate eye development concerning Wnt/Fzd signaling.
- To explore the implications of Wnt/Fzd pathway dysfunction in human eye diseases.
Main Methods:
- Review of existing literature on Wnt/Fzd signaling in ocular development.
- Comparative analysis of genetic and functional studies in model organisms (Drosophila, vertebrates).
- Examination of genetic mutations associated with ocular diseases.
Main Results:
- Wnt/Fzd pathways regulate eye field formation, cell proliferation, polarity, and differentiation in both invertebrates and vertebrates.
- Components of Wnt/Fzd signaling are expressed in the developing vertebrate eye.
- Mutations in Wnt/Fzd pathways are linked to various human ocular diseases.
Conclusions:
- Wnt/Fzd signaling pathways are essential for normal human eye development and function.
- Dysregulation of these pathways contributes to significant ocular pathologies.
- Further research into Wnt/Fzd pathways may lead to novel therapeutic strategies for blindness-causing diseases.
Related Concept Videos
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
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...
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
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...
Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Hedgehog Signaling Pathway
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...