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Article Dans Une Revue Biologie Aujourd'hui Année : 2019

[Two-pore-domain potassium channels and molecular mechanisms underlying migraine].

Canaux potassiques à deux domaines P (K2P) et migraine

Résumé

Migraine is a common, disabling neurological disorder with genetic, environmental and hormonal components and a prevalence estimated at ∼15%. Migraine episodes are notably related, among several factors, to electric hyperexcitability in sensory neurons. Their electrical activity is controlled by ion channels that generate current, specifically by the two-pore-domain potassium, K2P, channels, which inhibit electrical activity. Mutation in the gene encoding TRESK, a K2P channel, causes the formation of TRESK-MT1, the expected non-functional C-terminal truncated TRESK channel, and an additional unexpected protein, TRESK-MT2, which corresponds to a non-functional N-terminal truncated TRESK channel, through a mechanism called frameshift mutation-induced Alternative Translation Initiation (fsATI). TRESK-MT1 is inactive but TRESK-M2 targets two other ion channels, TREK1 and TREK2, inducing a great stimulation of the neuronal electrical activity that may cause migraines. These findings identify TREK1 and TREK2 as potential molecular targets for migraine treatment and suggest that fsATI should be considered as a distinct class of mutations.

Dates et versions

hal-02189575 , version 1 (19-07-2019)

Identifiants

Citer

Perrine Royal, Pablo Ávalos Prado, Brigitte Wdziekonski, Guillaume Sandoz. [Two-pore-domain potassium channels and molecular mechanisms underlying migraine].. Biologie Aujourd'hui, 2019, 213 (1-2), pp.51-57. ⟨10.1051/jbio/2019020⟩. ⟨hal-02189575⟩
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