A monoclonal antibody that targets a NaV1.7 channel voltage sensor for pain and itch relief.

A monoclonal antibody that targets a NaV1.7 channel voltage sensor for pain and itch relief.
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DOI:
10.1016/j.cell.2014.03.064
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发表时间:
2014-06-05
期刊:
影响因子:
64.5
通讯作者:
Lee SY
Lee SY
中科院分区:
生物学1区
文献类型:
--
作者:
Lee JH;Park CK;Chen G;Han Q;Xie RG;Liu T;Ji RR;Lee SY

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电压门控钠(NaV)通道控制可兴奋细胞中动作电位的上升。多项研究已经显示NaV通道亚型在人类生理学和疾病中的不同作用,但缺乏亚型特异性治疗,目前的努力仅限于小分子。在这里,我们提出了一种单克隆抗体,其靶向NaV1.7的电压传感器桨,该亚型对痛觉至关重要。该抗体不仅以高选择性抑制NaV1.7,而且还有效抑制小鼠的炎性和神经性疼痛。有趣的是,该抗体抑制急性和慢性瘙痒,尽管在疼痛和瘙痒调节方面存在有据可查的差异。利用该抗体,我们发现NaV1.7在脊髓伤害性和伤害性突触传递中起关键作用。我们的研究表明,NaV1.7是瘙痒管理的靶标,并且该抗体具有抑制疼痛和瘙痒的治疗潜力。我们的抗体策略可能对电压门控阳离子通道具有广泛的应用。
Voltage-gated sodium (NaV) channels control the upstroke of the action potentials in excitable cells. Multiple studies have shown distinct roles of NaV channel subtypes in human physiology and diseases, but subtype-specific therapeutics are lacking and the current efforts have been limited to small molecules. Here we present a monoclonal antibody that targets the voltage-sensor paddle of NaV1.7, the subtype critical for pain sensation. This antibody not only inhibits NaV1.7 with high selectivity but also effectively suppresses inflammatory and neuropathic pain in mice. Interestingly, the antibody inhibits acute and chronic itch, despite well-documented differences in pain and itch modulation. Using this antibody, we discovered that NaV1.7 plays a key role in spinal cord nociceptive and pruriceptive synaptic transmission. Our studies reveal that NaV1.7 is a target for itch management and the antibody has therapeutic potential for suppressing pain and itch. Our antibody strategy may have broad applications for voltage-gated cation channels.
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