Inhibition of the kinase WNK1/HSN2 ameliorates neuropathic pain by restoring GABA inhibition.

Inhibition of the kinase WNK1/HSN2 ameliorates neuropathic pain by restoring GABA inhibition.
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DOI:
10.1126/scisignal.aad0163
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发表时间:
2016-03-29
期刊:
影响因子:
7.3
通讯作者:
Rouleau GA
Rouleau GA
中科院分区:
生物学1区
文献类型:
--
作者:
Kahle KT;Schmouth JF;Lavastre V;Latremoliere A;Zhang J;Andrews N;Omura T;Laganière J;Rochefort D;Hince P;Castonguay G;Gaudet R;Mapplebeck JC;Sotocinal SG;Duan J;Ward C;Khanna AR;Mogil JS;Dion PA;Woolf CJ;Inquimbert P;Rouleau GA

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WNK 1/HSN 2激酶,突变的孟德尔形式的先天性疼痛不敏感性,有助于适应不良的减少KCC 2协同转运蛋白活性和损失GABA抑制在备用神经损伤(SNI)模型的神经性疼痛,通过增加KCC 2抑制磷酸化在Thr 906/Thr 1007。拮抗WNK 1/HSN 2信号减少SNI诱导的冷异常性疼痛和机械性痛觉过敏,降低上调的KCC 2 Thr 906/Thr 1007磷酸化,并使受损脊髓板层II神经元的病理性GABA去极化正常化。这些数据共同为神经损伤后的神经病理性疼痛提供了新的机制见解和令人信服的治疗靶点。
WNK1/HSN2 kinase, mutated in a Mendelian form of congenital pain insensitivity, contributes to a maladaptive decrease in KCC2 cotransporter activity and a loss of GABA inhibition in the spared nerve injury (SNI) model of neuropathic pain by increasing KCC2 inhibitory phosphorylation at Thr906/Thr1007. Antagonizing WNK1/HSN2 signaling reduces SNI-induced cold allodynia and mechanical hyperalgesia, decreases up-regulated KCC2 Thr906/Thr1007 phosphorylation, and normalizes pathological GABA depolarizations of injured spinal cord lamina II neurons. These data collectively provide novel mechanistic insight into, and a compelling therapeutic target for, neuropathic pain after nerve injury.
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