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Identification of sodium channel subtypes induced in cultured retinal pigment epithelium cells

  • Heather Dawes
  • , Gail Mandel
  • , Gary Matthews

Research output: Contribution to journalArticlepeer-review

Abstract

Recent electrophysiological experiments have shown that retinal pigment epithelium (RPE) cells begin to produce neuronal-type voltage-dependent sodium currents when placed in dissociated cell culture. In this study, the sodium channel types induced in cultured rat RPE cells were identified. Sodium channel mRNAs encoding two distinct alpha subunits were detected in the cultured RPE cells, brain type II/IIA, and a novel rat mRNA which we have termed RET1. These two sodium channel types may correspond to the TTX-sensitive and TTX-insensitive components of sodium current reported previously in cultured rat RPE cells.

Original languageEnglish (US)
Pages (from-to)1001-1005
Number of pages5
JournalVisual neuroscience
Volume12
Issue number5
DOIs
StatePublished - 1995
Externally publishedYes

Funding

This research was supported by NIH Grants NS22518 (G. Mandel) and EYO3821 (G. Matthews). We thank Stephanie Burke for excellent technical assistance.

FundersFunder number
Author National Institutes of Health National Institutes of Health National Institutes of Health National Institutes of Health The Bev Hartig Huntington's Disease Foundation National Institutes of HealthEYO3821
National Institute of Neurological Disorders and StrokeR01NS022518

    Keywords

    • Molecular biology
    • Retina
    • Retinal pigment epithelium
    • Sodium channel

    ASJC Scopus subject areas

    • Physiology
    • Sensory Systems

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