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Nat Commun ; 7: 13791, 2016 12 19.
Article in English | MEDLINE | ID: mdl-27991499

ABSTRACT

Neuronal firing patterns, which are crucial for determining the nature of encoded information, have been widely studied; however, the molecular identity and cellular mechanisms of spike-frequency adaptation are still not fully understood. Here we show that spike-frequency adaptation in thalamocortical (TC) neurons is mediated by the Ca2+-activated Cl- channel (CACC) anoctamin-2 (ANO2). Knockdown of ANO2 in TC neurons results in significantly reduced spike-frequency adaptation along with increased tonic spiking. Moreover, thalamus-specific knockdown of ANO2 increases visceral pain responses. These results indicate that ANO2 contributes to reductions in spike generation in highly activated TC neurons and thereby restricts persistent information transmission.


Subject(s)
Anoctamins/metabolism , Calcium/pharmacology , Sensory Receptor Cells/physiology , Thalamus/physiology , Adenoviridae , Animals , Anoctamins/genetics , Bestrophins/genetics , Bestrophins/metabolism , Female , Gene Expression Regulation/drug effects , Gene Knockdown Techniques , HEK293 Cells , Humans , Male , Mice , Mice, Inbred BALB C , NIH 3T3 Cells , Patch-Clamp Techniques , ortho-Aminobenzoates/pharmacology
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