Related Experiment Video
Updated: Aug 19, 2026
A Possible Zebrafish Model of Polycystic Kidney Disease: Knockdown of wnt5a Causes Cysts in Zebrafish Kidneys
Published on: December 2, 2014
Wilms' tumor suppressor gene WT1: from structure to renal pathophysiologic features
1Max Delbrück Center for Molecular Medicine, Humboldt University of Berlin, Berlin-Buch, Germany.
Abstract:
Normal development of the kidney is a highly complex process that requires precise orchestration of proliferation, differentiation, and apoptosis. In the past few years, a number of genes that regulate these processes, and hence play pivotal roles in kidney development, have been identified. The Wilms' tumor suppressor gene WT1 has been shown to be one of these essential regulators of kidney development, and mutations in this gene result in the formation of tumors and developmental abnormalities such as the Denys-Drash and Frasier syndromes. A fascinating aspect of the WT1 gene is the multitude of isoforms produced from its genomic locus. In this review, our current understanding of the structural features of WT1, how they modulate the transcriptional and post-transcriptional activities of the protein, and how mutations affecting individual isoforms can lead to diseased kidneys is summarized. In addition, results from transgenic experiments, which have yielded important findings regarding the function of WT1 in vivo, are discussed. Finally, data on the unusual feature of RNA editing of WT1 transcripts are presented, and the relevance of RNA editing for the normal functioning of the WT1 protein in the kidney is discussed.
Insights
The Wilms' tumor 1 (WT1) gene is crucial for kidney development, producing various protein forms. Mutations in WT1 cause kidney abnormalities and tumors, highlighting its essential regulatory role.
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- Kidney development involves complex regulation of cell proliferation, differentiation, and apoptosis.
- The Wilms' tumor suppressor gene (WT1) is essential for normal kidney development.
- Mutations in WT1 lead to developmental abnormalities like Denys-Drash and Frasier syndromes and kidney tumors.
Purpose of the Study:
- To review the structural features of WT1 isoforms.
- To summarize how WT1 structure influences its transcriptional and post-transcriptional activities.
- To discuss the impact of WT1 mutations and RNA editing on kidney disease.
Main Methods:
- Review of existing literature on WT1 gene structure, function, and mutations.
- Analysis of data from transgenic experiments to understand WT1 in vivo.
- Examination of RNA editing in WT1 transcripts.
Main Results:
- WT1 produces multiple isoforms with diverse functions.
- WT1 mutations affecting specific isoforms are linked to kidney diseases.
- Transgenic studies provide insights into WT1's in vivo roles.
- RNA editing of WT1 transcripts is an unusual feature with relevance to kidney function.
Conclusions:
- WT1 is a critical regulator of kidney development through its various isoforms.
- Understanding WT1 structure, isoforms, and RNA editing is key to comprehending kidney development and disease.
- Further research into WT1 is vital for potential therapeutic strategies for kidney disorders.
Related Concept Videos
02:54Canonical Wnt Signaling Pathway
01:12Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
01:41Non-Canonical Wnt Signaling Pathways
01:20The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
01:41Non-Canonical Wnt Signaling Pathways
01:20Renal Corpuscle
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...