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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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A novel and efficient method for the stable expression of heteromeric ion channels in mammalian cells.

The 5' untranslated leader sequence from the encephalomyocarditis virus was used to engineer bicistronic or tricistronic expression vectors encoding two subunits (P2X2 and P2X3) of an ATP-gated cation channel. Human embryonic kidney (293) and chinese hamster ovary (CHO-K1) cells were transfected with the vector, and stable cell lines were generated by single cell subcloning. Selection was made in a 96-well format on the basis of a sustained increase in intracellular calcium (fluorescence of Fluo3-loaded cells) evoked by the ATP analog alpha beta methylene ATP. A high proportion of transformants expressed heteromeric receptors containing both P2X2 and P2X3 subunits, as evidenced by a nondesensitizing current in response to alpha beta methylene ATP. The method is fast and simple and could be generally useful for the stable expression of heteromultimeric channel proteins.[1]

References

  1. A novel and efficient method for the stable expression of heteromeric ion channels in mammalian cells. Kawashima, E., Estoppey, D., Virginio, C., Fahmi, D., Rees, S., Surprenant, A., North, R.A. Recept. Channels (1998) [Pubmed]
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