Related Experiment Video
Updated: Jun 27, 2026

08:06
Isolation and Culture of Cells from the Nephrogenic Zone of the Embryonic Mouse Kidney
Published on: April 22, 2011
Stimulatory and inhibitory signaling molecules that regulate renal branching morphogenesis
Darren Bridgewater1, Norman D Rosenblum
1Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.
Pediatric Nephrology (Berlin, Germany)
|December 17, 2008
Summary
Branching morphogenesis is key for kidney development. This review details the cellular events and signaling pathways controlling kidney tubule branching, crucial for preventing birth defects.
Area of Science:
- Developmental Biology
- Renal Physiology
- Cellular Morphogenesis
Background:
- Branching morphogenesis, the growth and branching of epithelial tubules, is essential for forming mammalian tissues like the kidney.
- Defects in renal branching can lead to congenital abnormalities such as renal agenesis, dysplasia, multiplex kidneys, and hypertension.
Purpose of the Study:
- To describe the morphological events driving the mammalian collecting system's tree-like structure.
- To highlight established and novel signaling systems regulating branching morphogenesis in the kidney.
Main Methods:
- Review of existing literature on renal development and branching.
- Analysis of morphological events in mammalian collecting system formation.
- Synthesis of knowledge on signaling pathways influencing branching morphogenesis.
Main Results:
- Detailed description of the morphological processes underlying kidney collecting system development.
- Identification of key signaling pathways that stimulate and inhibit renal branching.
- Integration of established and novel molecular mechanisms governing this process.
Conclusions:
- Understanding branching morphogenesis is critical for addressing renal developmental disorders.
- Signaling pathways play a pivotal role in regulating the formation of the kidney's complex architecture.
- Further research into these pathways may offer therapeutic targets for kidney abnormalities.
Related Concept Videos
Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Endocrine Signaling
Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
Hormonal Regulation
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
TGF - β Signaling Pathway
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
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...
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...
