IL-23/IL-17A/TRPV1 axis produces mechanical pain via macrophage-sensory neuron crosstalk in female mice.

IL-23/IL-17A/TRPV1 axis produces mechanical pain via macrophage-sensory neuron crosstalk in female mice.
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DOI:
10.1016/j.neuron.2021.06.015
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发表时间:
2021-09-01
期刊:
影响因子:
16.2
通讯作者:
Ji RR
Ji RR
中科院分区:
医学1区
文献类型:
--
作者:
Luo X;Chen O;Wang Z;Bang S;Ji J;Lee SH;Huh Y;Furutani K;He Q;Tao X;Ko MC;Bortsov A;Donnelly CR;Chen Y;Nackley A;Berta T;Ji RR

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尽管性别二态性越来越被认为是疼痛的重要因素,但女性特异性疼痛信号传导尚未得到充分研究。在这里,我们报告说,给予IL-23会在雌性小鼠而非雄性小鼠中产生机械性疼痛(机械性异常性疼痛),并且化疗引起的机械性疼痛在缺乏Il23或Il23r的雌性小鼠中选择性受损。 IL-23 引起的疼痛由雌激素促进,但被雄激素抑制,表明性激素参与其中。 IL-23 需要 C 纤维伤害感受器和 TRPV1 来产生疼痛,但不直接激活伤害感受器神经元。值得注意的是,IL-23 需要巨噬细胞释放 IL-17A 才能引起女性机械性疼痛。低剂量 IL-17A 直接激活伤害感受器并仅在女性中引起机械性疼痛。最后,删除 TRPV1+ 伤害感受器中的雌激素受体亚基 α (ERα) 可消除 IL-23 和 IL-17 引起的女性疼痛。这些发现表明 IL-23/IL-17A/TRPV1 轴通过神经免疫相互作用调节女性特异性机械疼痛。我们的研究还揭示了免疫和神经元水平上的性别二态性。在本期《Neuron》中,Luo 等人描述了巨噬细胞产生的 IL-23 如何通过 IL-17 释放以及随后伤害感受器中 IL-17 受体和 TRPV1 的激活来调节雌性小鼠的机械性疼痛,从而通过免疫和神经元调节提供对雌性疼痛性别二态性的机制见解。
Although sex dimorphism is increasingly recognized as an important factor in pain, female-specific pain signaling is not well-studied. Here we report that administration of IL-23 produces mechanical pain (mechanical allodynia) in female, but not male mice, and chemotherapy-induced mechanical pain is selectively impaired in female mice lacking Il23 or Il23r. IL-23-induced pain is promoted by estrogen but suppressed by androgen, suggesting an involvement of sex hormones. IL-23 requires C-fiber nociceptors and TRPV1 to produce pain but does not directly activate nociceptor neurons. Notably, IL-23 requires IL-17A release from macrophages to evoke mechanical pain in females. Low dose IL-17A directly activates nociceptors and induces mechanical pain only in females. Finally, deletion of estrogen receptor subunit α (ERα) in TRPV1+ nociceptors abolishes IL-23- and IL-17-induced pain in females. These findings demonstrate that the IL-23/IL-17A/TRPV1 axis regulates female-specific mechanical pain via neuro-immune interactions. Our study also reveals sex dimorphism at both immune and neuronal levels. In this issue of Neuron, Luo et al., describe how IL-23, produced by macrophages, regulates mechanical pain in female mice, via IL-17 release, and subsequent activation of IL-17 receptor and TRPV1 in nociceptors, and therefore, offer a mechanistic insight into sex dimorphism in female pain through immune and neuronal regulations.
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