I routinely functionally assess the iPSC derived neurons using calcium imaging with Fluo-4/AM (490nm/510nm). However, have not been successful at using those same neuronal dishes for carrying out ICC. The reason that I think could be are as follows:

  • The calcium-sensitive dye fluo-4/AM has an emission at 510nm. As a reason why, there is a spectral overlap with my anti-bodies of interest.
  • As I try and wash out the dye from the dishes, the neurons detach as a matter of fact. These neurons have been subjected to constant washing before and after the calcium dye-loading process. Moreover, these neurons are first stimulated with TTX following ionomycin and EGTA+TX are added to the dishes as internal controls.
  • Any suggestions or references or direction to a protocol would be of a great help!

    Thanks!

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