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Related Experiment Videos

Cilium-generated signaling: a cellular GPS?

Thomas Benzing1, Gerd Walz

  • 1Renal Division, University Hospital Freiburg, Freiburg, Germany. thomas.benzing@uniklinik-freiburg.de

Current Opinion in Nephrology and Hypertension
|April 13, 2006
PubMed
Summary
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Cilia and basal bodies are crucial for kidney biology, influencing signaling pathways like Hedgehog and Wnt. These cellular structures may act as positioning devices, ensuring proper kidney tubule development and cell organization.

Area of Science:

  • Cell Biology
  • Developmental Biology
  • Nephrology

Background:

  • Proteins localized to cilia and basal bodies are increasingly recognized for their role in human disorders, including cystic kidney disease.
  • The precise physiological function of cilium-generated signaling in kidney biology has remained largely unclear.
  • This review synthesizes recent advancements in understanding cilia's role in kidney function.

Purpose of the Study:

  • To review recent findings on the role of cilia in kidney biology.
  • To explore the involvement of cilium-generated signaling in developmental pathways.
  • To propose a novel hypothesis for cilia function in vertebrate epithelial organization.

Main Methods:

  • Review of recent scientific literature on cilia, basal bodies, and kidney biology.

Related Experiment Videos

  • Analysis of studies investigating signaling pathways (Hedgehog, Wnt) and their relation to ciliary function.
  • Examination of data on planar cell polarity and its connection to cilia in epithelial development.

    • Main Results:

    • Cilium-generated signaling is essential for the function of key developmental regulators, including Hedgehog signaling.
    • Disruption of ciliary targeting of Hedgehog receptors and effectors impairs signaling.
    • The ciliary protein inversin acts as a molecular switch regulating Wnt signaling cascades.

    Conclusions:

    • Cilia and basal body proteins are implicated in planar cell polarity.
    • A novel hypothesis suggests cilia function as cellular positioning devices.
    • This positioning role may enable subcellular asymmetry and epithelial cell polarization for organized tissue structures like kidney tubules.