Our study is the first to demonstrate that EGF regulates the melastatin subfamily of TRP channels. Furthermore, the effect is specific to member TRPM6, because no increase in TRPM7 current, the closest homologue, was observed upon EGF application. To confirm that EGF specifically activates the EGFR, we demonstrated the presence of this receptor in our model system and then showed an inhibition of the observed effect when the receptor was blocked with selective antagonists. Further evidence that EGFR engagement is required for TRPM6 activation was provided by the demonstration that inhibition of the receptor's tyrosine kinase activity prevented both EGF-induced increase in TRPM6 mobility and activity. Thus, EGF-mediated activation of TRPM6 is novel within this subfamily of channels and requires the specific engagement of the EGFR.