Confocal Imaging of GFP-Labeled Ion Channels

  • Bryan D. Moyer
  • Bruce A. Stanton
Part of the Methods in Pharmacology and Toxicology book series (MIPT)


The generation and maintenance of cell polarity is crucial for vectorial solute and fluid transport in epithelial cells and for the normal function of neurons. Epithelial cells must asymmetrically distribute receptors, transporters, and ion channels between the apical and basolateral membranes in order to establish and maintain polarity and function (1, 2, 3, 4). Neurons also must asymmetrically distribute proteins between axons and somatodendritic regions to propagate action potentials from one cell to the next (5). In general, proteins sorted to the apical membrane of epithelia are expressed in the axons of neurons, whereas proteins sorted to the basolateral membrane of epithelia are distributed to the somatodendritic region of neurons (5). To achieve this asymmetry, cells target newly synthesized transport proteins to the appropriate membrane —either apical (axon) or basolateral (dendritic)— and retain them there following their delivery.


Green Fluorescent Protein Cystic Fibrosis Transmembrane Conductance Regulator Apical Membrane MDCK Cell Basolateral Membrane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Humana Press Inc., Totowa, NJ 2001

Authors and Affiliations

  • Bryan D. Moyer
    • 1
  • Bruce A. Stanton
    • 2
  1. 1.Department of Cell BiologyThe Scripps Research InstituteSan Diego
  2. 2.Department of PhysiologyDartmouth Medical SchoolHanover

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