An Olfactory Sensory Neuron Line, Odora, Properly Targets Olfactory Proteins and Responds to Odorants

An Olfactory Sensory Neuron Line, Odora, Properly Targets Olfactory Proteins and Responds to Odorants
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嗅觉感觉神经元线 Odora 正确定位嗅觉蛋白并对气味做出反应

DOI:
10.1523/jneurosci.19-19-08260.1999
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发表时间:
1999
期刊:
The Journal of Neuroscience
影响因子:
--
通讯作者:
D. D. Hunter
D. D. Hunter
中科院分区:
--
文献类型:
--
作者:
Julie R. Murrell;D. D. Hunter

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神经系统和大部分化学世界之间的相互作用的部位是在嗅觉感觉神经元(OSN)中。气味受体蛋白(ORP)被假定为介导这些相互作用。然而,大多数ORP的功能尚未在体内或体外得到证实。出于这个和其他原因,我们创建了一个条件永生化的细胞系来源于OSN谱系,我们称之为odora。在对照条件下,Odora细胞在表型上类似于OSN祖细胞,即球状基底细胞。分化后,气味细胞更接近OSN。分化的气味细胞表达神经元和嗅觉标记物,包括嗅觉信号传导途径的成分。与其他细胞系不同,它们还有效地将外源ORP靶向其表面。引人注目的是,分化的气味细胞表达的氧化还原电位响应气味,钙离子的流入。特别地,表达一种ORP的细胞仅对一种类型的测试气味剂表现出特异性响应。因此,嗅细胞是研究嗅感觉神经元发生和功能的理想模型。
The site for interactions between the nervous system and much of the chemical world is in the olfactory sensory neuron (OSN). Odorant receptor proteins (ORPs) are postulated to mediate these interactions. However, the function of most ORPs has not been demonstrated in vivo or in vitro. For this and other reasons, we created a conditionally immortalized cell line derived from the OSN lineage, which we term odora. Odora cells, under control conditions, are phenotypically similar to the OSN progenitor, the globose basal cell. After differentiation, odoracells more closely resemble OSNs. Differentiated odoracells express neuronal and olfactory markers, including components of the olfactory signal transduction pathway. Unlike other cell lines, they also efficiently target exogenous ORPs to their surface. Strikingly, differentiated odora cells expressing ORPs respond to odorants, as measured by an influx of calcium. In particular, cells expressing one ORP demonstrate a specific response to only one type of tested odorant. Odora cells, therefore, are ideal models to examine the genesis and function of olfactory sensory neurons.
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