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首页> 外文期刊>Neuron >Runx1 determines nociceptive sensory neuron phenotype and is required for thermal and neuropathic pain.
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Runx1 determines nociceptive sensory neuron phenotype and is required for thermal and neuropathic pain.

机译:Runx1确定伤害性感觉神经元表型,是热性和神经性疼痛所必需的。

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摘要

In mammals, the perception of pain is initiated by the transduction of noxious stimuli through specialized ion channels and receptors expressed by nociceptive sensory neurons. The molecular mechanisms responsible for the specification of distinct sensory modality are, however, largely unknown. We show here that Runx1, a Runt domain transcription factor, is expressed in most nociceptors during embryonic development but in adult mice, becomes restricted to nociceptors marked by expression of the neurotrophin receptor Ret. In these neurons, Runx1 regulates the expression of many ion channels and receptors, including TRP class thermal receptors, Na+-gated, ATP-gated, and H+-gated channels, the opioid receptor MOR, and Mrgpr class G protein coupled receptors. Runx1 also controls the lamina-specific innervation pattern of nociceptive afferents in the spinal cord. Moreover, mice lacking Runx1 exhibit specific defects in thermal and neuropathic pain. Thus, Runx1 coordinates the phenotype of a large cohort of nociceptors, a finding with implications for pain therapy.
机译:在哺乳动物中,疼痛的感知是通过伤害性感觉神经元通过专门的离子通道和受体转导有害刺激而引发的。然而,很大程度上不清楚负责指定不同感觉方式的分子机制。我们在这里显示Runx1,一种Runt域转录因子,在胚胎发育过程中在大多数伤害感受器中表达,但在成年小鼠中变得局限于以神经营养蛋白受体Ret的表达为标志的伤害感受器。在这些神经元中,Runx1调节许多离子通道和受体的表达,包括TRP类热受体,Na +门控,ATP门控和H +门控通道,阿片类药物受体MOR和Mrgpr G类蛋白偶联受体。 Runx1还控制脊髓中伤害感受传入的层特定神经支配模式。此外,缺少Runx1的小鼠在热性和神经性疼痛中表现出特定的缺陷。因此,Runx1协调了一系列伤害感受器的表型,这一发现对疼痛治疗具有重要意义。

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