Kv7.2 regulates the function of peripheral sensory neurons.
Kv7.2 regulates the function of peripheral sensory neurons.
复制标题
KV7.2调节周围感觉神经元的功能。
DOI:
10.1002/cne.23595
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发表时间:
2014-10-01
影响因子:
2.5
通讯作者:
Scherer, Steven S.
中科院分区:
文献类型:
--
作者:
King, Chih H.;Lancaster, Eric;Salomon, Daniela;Peles, Elior;Scherer, Steven S.
The Kv7 (KCNQ) family of voltage-gated K+ channels regulates cellular excitability. The functional role of Kv7.2 has been hampered by the lack of a viable Kcnq2-null animal model. In this study, we generated homozygous Kcnq2-null sensory neurons using the Cre-Lox system; in these mice, Kv7.2 expression is absent in the peripheral sensory neurons, whereas the expression of other molecular components of nodes (including Kv7.3), paranodes, and juxtaparanodes is not altered. The conditional Kcnq2-null animals exhibit normal motor performance, but have increased thermal hyperalgesia and mechanical allodynia. Whole cell patch recording technique demonstrates that Kcnq2-null sensory neurons have increased excitability and reduced spike frequency adaptation. Taken together, our results suggest that the loss of Kv7.2 activity increases the excitability of primary sensory neurons.
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DOI:
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