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Method for Primary Epithelial Cell Culture from the Rat Choroid Plexus.

  • Author(s): Lallai, Valeria
  • Ahmed, Amina
  • Fowler, Christie D
  • et al.

The choroid plexus consists of a network of secretory epithelial cells localized throughout the lateral, third and fourth ventricles of the brain. Cerebrospinal fluid (CSF) is generated by the choroid plexus and released into the ventricular environment. This biofluid contains an enriched source of proteins, ions, and other signaling molecules for extracellular support of neurons and glial cells within the central nervous system. Given that other cells in the brain also release factors into the CSF, in vitro investigations of choroid plexus function are necessary to isolate processes selectively occurring within and released from this tissue. Here, we describe a protocol to isolate choroid plexus tissue from each of the ventricular locations, and the cell culture conditions required to support growth and maintenance of these epithelial cells. This technique allows for investigations of the functional significance of the choroid plexus, such as for the examination of stimuli promoting the release of growth factors and extracellular vesicles (e.g., exosomes and microvesicles) from ventricle-specific choroid plexus epithelial cells.

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