The vomeronasal organ mediates interspecies defensive behaviors through detection of protein pheromone homologs.

The vomeronasal organ mediates interspecies defensive behaviors through detection of protein pheromone homologs.
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DOI:
10.1016/j.cell.2010.03.037
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发表时间:
2010-05-14
期刊:
影响因子:
64.5
通讯作者:
Stowers L
Stowers L
中科院分区:
生物学1区
文献类型:
--
作者:
Papes F;Logan DW;Stowers L

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潜在的捕食者会发出不具特征的化学信号,警告接收物种有危险。感知这些刺激的神经元仍然未知。本研究表明,猫、鼠和蛇发出的恐惧气味的检测和处理需要犁鼻器官中的感觉神经元的功能。为了研究捕食者发出的感觉信号的分子性质,我们使用naïve接受动物先天行为分析、钙成像和cFos诱导相结合的方法,从两个物种中分离出显著的配体。令人惊讶的是,其他动物释放的促进防御行为的活性是由属于主要尿蛋白(Mup)家族的物种特异性配体编码的,这是促进攻击的小鼠信息素的同系物。我们发现重组Mup蛋白足以激活感觉神经元并启动类似于天然气味的防御行为。这种现有感觉机制的共同选择为进化各种物种特异性分子探测器的难题提供了分子解决方案。
Potential predators emit uncharacterized chemosignals that warn receiving species of danger. Neurons that sense these stimuli remain unknown. Here we show that detection and processing of fear-evoking odors emitted from cat, rat, and snake require the function of sensory neurons in the vomeronasal organ. To investigate the molecular nature of the sensory cues emitted by predators, we isolated the salient ligands from two species using a combination of innate behavioral assays in naïve receiving animals, calcium imaging, and cFos induction. Surprisingly, the defensive behavior-promoting activity released by other animals is encoded by species-specific ligands belonging to the major urinary protein (Mup) family, homologs of aggression-promoting mouse pheromones. We show that recombinant Mup proteins are sufficient to activate sensory neurons and initiate defensive behavior similar to native odors. This co-option of existing sensory mechanisms provides a molecular solution to the difficult problem of evolving a variety of species-specific molecular detectors.
DOI: 10.1016/0031-9384(79)90274-9
发表时间: 1979-01-01
影响因子: 2.9
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