109
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      TMEM16A, a membrane protein associated with calcium-dependent chloride channel activity.

      Science (New York, N.Y.)

      Alternative Splicing, Amino Acid Sequence, Animals, Bronchi, cytology, metabolism, Calcium, Cell Line, Cell Membrane, Cells, Cultured, Chloride Channels, Chlorides, Epithelial Cells, Humans, Interleukin-4, Membrane Proteins, chemistry, genetics, Molecular Sequence Data, Neoplasm Proteins, Oligonucleotide Array Sequence Analysis, Patch-Clamp Techniques, RNA, Small Interfering, Respiratory Mucosa, Transfection

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Calcium-dependent chloride channels are required for normal electrolyte and fluid secretion, olfactory perception, and neuronal and smooth muscle excitability. The molecular identity of these membrane proteins is still unclear. Treatment of bronchial epithelial cells with interleukin-4 (IL-4) causes increased calcium-dependent chloride channel activity, presumably by regulating expression of the corresponding genes. We performed a global gene expression analysis to identify membrane proteins that are regulated by IL-4. Transfection of epithelial cells with specific small interfering RNA against each of these proteins shows that TMEM16A, a member of a family of putative plasma membrane proteins with unknown function, is associated with calcium-dependent chloride current, as measured with halide-sensitive fluorescent proteins, short-circuit current, and patch-clamp techniques. Our results indicate that TMEM16A is an intrinsic constituent of the calcium-dependent chloride channel. Identification of a previously unknown family of membrane proteins associated with chloride channel function will improve our understanding of chloride transport physiopathology and allow for the development of pharmacological tools useful for basic research and drug development.

          Related collections

          Author and article information

          Journal
          18772398
          10.1126/science.1163518

          Comments

          Comment on this article