Sexual rejection via a vomeronasal receptor-triggered limbic circuit.

Sexual rejection via a vomeronasal receptor-triggered limbic circuit.
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DOI:
10.1038/s41467-018-07003-5
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发表时间:
2018-10-26
影响因子:
16.6
通讯作者:
Touhara K
Touhara K
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Osakada T;Ishii KK;Mori H;Eguchi R;Ferrero DM;Yoshihara Y;Liberles SD;Miyamichi K;Touhara K

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交配驱动力与保护后代资源的需要相平衡,但对交配负调节的神经基础仍然知之甚少。在啮齿类动物中,信息素严格地调节性行为。在这里,我们观察到抑制成年雌性小鼠的性行为外分泌腺分泌肽22(ESP22),泪腺蛋白从幼年小鼠。ESP22激活一个专用的犁鼻受体V2Rp4,V2Rp4敲除消除了ESP22对性行为的影响。ESP22反应神经回路的遗传追踪揭示了抑制生殖行为的关键边缘系统连接。此外,V2Rp4抵消高度相关的犁鼻受体,V2Rp5,检测男性性信息素ESP 1。有趣的是,V2Rp4和V2Rp5由相邻的基因编码,但与不同的回路耦合,并对女性性行为产生相反的影响。总的来说,我们的研究揭示了信息素介导的性排斥的分子和神经机制,以及更普遍的是,输入如何通过嗅觉回路来唤起特定的行为。性信息素,增加交配已被报道在许多不同的物种,但有很少知道的信息素,抑制女性交配驱动器。这项研究报告说,幼年雌性小鼠释放信息素,ESP 22,它抑制成年雌性小鼠的性接受性唤起一个强大的排斥行为后,男性安装。
Mating drive is balanced by a need to safeguard resources for offspring, yet the neural basis for negative regulation of mating remains poorly understood. In rodents, pheromones critically regulate sexual behavior. Here, we observe suppression of adult female sexual behavior in mice by exocrine gland-secreting peptide 22 (ESP22), a lacrimal protein from juvenile mice. ESP22 activates a dedicated vomeronasal receptor, V2Rp4, and V2Rp4 knockout eliminates ESP22 effects on sexual behavior. Genetic tracing of ESP22-responsive neural circuits reveals a critical limbic system connection that inhibits reproductive behavior. Furthermore, V2Rp4 counteracts a highly related vomeronasal receptor, V2Rp5, that detects the male sex pheromone ESP1. Interestingly, V2Rp4 and V2Rp5 are encoded by adjacent genes, yet couple to distinct circuits and mediate opposing effects on female sexual behavior. Collectively, our study reveals molecular and neural mechanisms underlying pheromone-mediated sexual rejection, and more generally, how inputs are routed through olfactory circuits to evoke specific behaviors. Sex pheromones that increase mating have been reported across a number of different species, yet there is little known about pheromones that suppress female mating drive. This study reports that juvenile female mice release a pheromone, ESP22, which suppresses sexual receptivity of adult female mice by evoking a robust rejection behavior upon male mounting.
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