Characterization of subcellular localization and Ca2+ modulation of calsenilin/DREAM/KChIP3

Neuroreport. 2008 Aug 6;19(12):1193-7. doi: 10.1097/WNR.0b013e3283089209.

Abstract

Earlier reports found that calsenilin is a transcriptional repressor or a subunit of plasma membrane channel, and indicated that calsenilin was present in the nucleus or plasma membrane. Immunohistochemical and subcellular fractionation analysis, however, revealed that calsenilin/DREAM/KChIP3 was distributed throughout the cytoplasm of SK-N-BE2(C), Jurkat, and HeLa cells. In addition, the expression of calsenilin suppressed the ATP-induced increase in intracellular Ca2+ concentrations. By increase in intracellular calcium concentration, calsenilin was translocated into the nucleus.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • COS Cells
  • Calcium / analysis
  • Calcium / metabolism*
  • Cell Fractionation / methods
  • Cell Line, Tumor
  • Cell Nucleus / metabolism*
  • Chlorocebus aethiops
  • Green Fluorescent Proteins / genetics
  • Green Fluorescent Proteins / metabolism
  • HeLa Cells
  • Humans
  • Immunohistochemistry
  • Intracellular Space / metabolism
  • Jurkat Cells
  • Kv Channel-Interacting Proteins / genetics
  • Kv Channel-Interacting Proteins / metabolism*
  • Microscopy, Fluorescence
  • Plasmids / genetics
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / metabolism
  • Repressor Proteins / genetics
  • Repressor Proteins / metabolism*
  • Subcellular Fractions / metabolism

Substances

  • KCNIP3 protein, human
  • Kv Channel-Interacting Proteins
  • Recombinant Fusion Proteins
  • Repressor Proteins
  • Green Fluorescent Proteins
  • Calcium