SLC4A3 Knockout Cell Line (HCT 116)

The choice depends on whether you are studying SLC4A3 (AE3)'s role in chloride-bicarbonate exchange or its specific functions in cardiac and neuronal pH regulation. The Knockout line is appropriate for asking whether AE3 is required for chloride/bicarbonate exchange in colorectal cancer contexts. Overexpression is useful for studying cardiac (cAE3) versus brain (bAE3) splice variants or for testing transport activity. For anion exchanger research, the EDITGENE SLC4A3 Knockout in HCT 116 provides a colorectal cancer-relevant context, though AE3's principal physiological sites are heart and brain. SLC4A3 variants have been associated with idiopathic generalized epilepsy susceptibility. Rescue with wild-type, splice variant-specific, or transport-deficient AE3 enables structure-function studies.

Primary applications: • Chloride/bicarbonate exchange: intracellular pH and chloride measurements following bicarbonate or chloride manipulation to quantify AE3 activity. • Splice variant studies: cAE3 (cardiac) versus bAE3 (brain) splice variant-specific rescue experiments. • Epilepsy susceptibility studies: rescue with idiopathic generalized epilepsy-associated SLC4A3 variants for functional characterization. • AE family comparison: SLC4A1 (AE1) and SLC4A2 (AE2) expression analysis to interpret anion exchanger network. EDITGENE recommends this model for researchers investigating anion exchanger biology, chloride/bicarbonate homeostasis, and AE3-related disease genetics.

Yes. AE3 rescue experiments require attention to splice variant and tissue-specific biology: • Construct design: use a codon-modified SLC4A3 sequence with a small C-terminal tag (FLAG, HA). The 14 transmembrane SLC4 architecture must be preserved. • Splice variant rescue: cAE3 (cardiac) and bAE3 (brain) variants have distinct N-termini; separate rescue with each variant enables isoform-specific functional studies. • Transport-deficient rescue: substrate-binding mutations or specific stilbene disulfonate-binding residue mutations enable mechanistic dissection. • Functional readout: rescue should restore chloride-bicarbonate exchange activity measured by intracellular pH and chloride imaging. HCT 116 transduces efficiently with lentivirus and supports stable rescue line generation.