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Related Concept Videos

Cell Polarization by Rho Proteins01:21

Cell Polarization by Rho Proteins

Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
Polarity of the Cytoskeleton01:18

Polarity of the Cytoskeleton

The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory molecules and subcellular components across the cell and ii) the orientation of polar cytoskeletal filaments that make up the cytoskeletal networks, specifically microfilaments, and microtubules arranged along the axis of polarity. Interactions between the cytoskeletal filaments are crucial for the establishment and maintenance of the polar nature...

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Related Experiment Video

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The C. elegans Intestine As a Model for Intercellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis at the Single-cell Level: Labeling by Antibody Staining, RNAi Loss-of-function Analysis and Imaging
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Neuronal polarity in C. elegans.

Chan-Yen Ou1, Kang Shen

  • 1Department of Biology, Howard Hughes Medical Institute, Stanford University, 385 Serra Mall, CA 94305, USA.

Developmental Neurobiology
|May 11, 2011
PubMed
Summary
This summary is machine-generated.

Understanding neuronal polarity is key for brain function. This review explores how neurons establish distinct axons and dendrites using genetic tools in C. elegans, focusing on symmetry breaking and molecule recruitment.

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12:15

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Developmental Biology

Background:

  • Neuronal polarity, the development of distinct axons and dendrites, is crucial for neural network function.
  • The precise mechanisms governing axon-dendrite specification and maintenance remain incompletely understood.
  • Caenorhabditis elegans offers a powerful genetic model for in vivo studies of neuronal polarity.

Purpose of the Study:

  • To review recent advances in understanding neuronal polarity establishment and maintenance.
  • To highlight the role of extrinsic cues and intracellular molecules in axon-dendrite specification.
  • To discuss the utility of C. elegans as a model system for studying neuronal development.

Main Methods:

  • Review of recent scientific literature on neuronal polarity.
  • Focus on studies utilizing genetic approaches in C. elegans.
  • Analysis of molecular mechanisms underlying symmetry breaking and cell polarization.

Main Results:

  • Identification of critical polarity molecules involved in different stages of neuronal polarization.
  • Elucidation of how extrinsic cues guide neuronal asymmetry.
  • Understanding the recruitment of intracellular components to establish polarity.

Conclusions:

  • Neuronal polarity is a complex process involving coordinated signaling and molecular interactions.
  • C. elegans provides valuable insights into the fundamental principles of axon-dendrite formation.
  • Further research in model organisms will continue to unravel the intricacies of neuronal development.