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Identification of preoptic sleep neurons using retrograde labelling and gene profiling

机译:使用逆行标记和基因分析鉴定视前睡眠神经元

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摘要

In humans and other mammalian species, lesions in the preoptic area of the hypothalamus cause profound sleep impairment(1-5), indicating a crucial role of the preoptic area in sleep generation. However, the underlying circuit mechanism remains poorly understood. Electrophysiological recordings and c-Fos immunohistochemistry have shown the existence of sleep-active neurons in the preoptic area, especially in the ventrolateral preoptic area and median preoptic nucleus(6-9). Pharmacogenetic activation of c-Fos-labelled sleep-active neurons has been shown to induce sleep(10). However, the sleep-active neurons are spatially intermingled with wake-active neurons(6,7), making it difficult to target the sleep neurons specifically for circuit analysis. Here we identify a population of preoptic area sleep neurons on the basis of their projection target and discover their molecular markers. Using a lentivirus expressing channelrhodopsin-2 or a light-activated chloride channel for retrograde labelling, bidirectional optogenetic manipulation, and optrode recording, we show that the preoptic area GABAergic neurons projecting to the tuberomammillary nucleus are both sleep active and sleep promoting. Furthermore, translating ribosome affinity purification and single-cell RNA sequencing identify candidate markers for these neurons, and optogenetic and pharmacogenetic manipulations demonstrate that several peptide markers (cholecystokinin, corticotropin-releasing hormone, and tachykinin 1) label sleep-promoting neurons. Together, these findings provide easy genetic access to sleep-promoting preoptic area neurons and a valuable entry point for dissecting the sleep control circuit.
机译:在人类和其他哺乳动物物种中,下丘脑视前区的病变会导致严重的睡眠障碍(1-5),表明视前区在睡眠产生中的关键作用。但是,底层电路机制仍然知之甚少。电生理记录和c-Fos免疫组化显示,视前区,特别是腹侧前视区和正中视前核存在睡眠活动神经元(6-9)。已经证明c-Fos标记的睡眠活动神经元的药理学活化可诱导睡眠(10)。然而,睡眠活动神经元在空间上与唤醒活动神经元混合在一起(6,7),这使得很难将睡眠神经元专门用于电路分析。在这里,我们根据投射目标确定视前区域睡眠神经元的种群,并发现其分子标记。使用慢病毒表达channelrhodopsin-2或光激活的氯离子通道进行逆行标记,双向光遗传学操作和光极记录,我们显示投射到结核母乳核的视前区GABA能神经元既有睡眠活动性又有睡眠促进性。此外,翻译核糖体亲和纯化和单细胞RNA测序可识别这些神经元的候选标记,而光遗传学和药理学操作证明,几种肽标记(胆囊收缩素,促肾上腺皮质激素释放激素和速激肽1)可标记促进睡眠的神经元。在一起,这些发现提供了容易遗传的促进睡眠的视前区域神经元的遗传途径,并且是剖析睡眠控制回路的有价值的切入点。

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  • 来源
    《Nature》 |2017年第7655期|477-481|共5页
  • 作者单位

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif San Francisco, Dept Physiol, San Francisco, CA 94158 USA;

    Allen Inst Brain Sci, Seattle, WA 98103 USA;

    Stanford Univ, Howard Hughes Med Inst, Dept Biol, Stanford, CA 94305 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

    Allen Inst Brain Sci, Seattle, WA 98103 USA;

    NIDDKD, Diabet Endocrinol & Obes Branch, NIH, Bethesda, MD 20892 USA|NIDA, NIH, Baltimore, MD 21224 USA;

    Allen Inst Brain Sci, Seattle, WA 98103 USA;

    Allen Inst Brain Sci, Seattle, WA 98103 USA;

    Allen Inst Brain Sci, Seattle, WA 98103 USA;

    Univ Calif San Francisco, Dept Physiol, San Francisco, CA 94158 USA;

    Stanford Univ, Howard Hughes Med Inst, Dept Biol, Stanford, CA 94305 USA;

    Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Div Neurobiol,Helen Wills Neurosci Inst, Berkeley, CA 94720 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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