Retinoid signaling distinguishes a subpopulation of olfactory receptor neurons in the developing and adult mouse

Retinoid signaling distinguishes a subpopulation of olfactory receptor neurons in the developing and adult mouse
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类维生素A信号传导区分发育中和成年小鼠的嗅觉受体神经元亚群

DOI:
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发表时间:
1998
期刊:
The Journal of comparative neurology
影响因子:
--
通讯作者:
A. LaMantia
A. LaMantia
中科院分区:
--
文献类型:
--
作者:
J. Whitesides;Miles S. Hall;R. Anchan;A. LaMantia

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我们问是否视黄酸(RA)影响嗅觉受体神经元(ORN)在发育和成熟的小鼠嗅上皮(oe)。视黄酸受体和结合蛋白在嗅鞘中的分布在胚胎11.5天和13.5天之间发生变化,这一时期是嗅神经元首次分化并将轴突送入新生的嗅神经的时期。与这种变化相一致的是,在这些年龄在额鼻间充质中产生的RA开始激活背外侧oE中双侧对称的ORN子集中的基因表达,这是通过RA应答转基因的表达来判断的。来自这些RA激活的ORN的轴突在嗅神经中分离,因为它穿过额鼻间充质向前脑延伸。在体外,RA增强ORN神经突在层粘连蛋白上的生长,在胚胎中,层粘连蛋白存在于与嗅神经直接相关的额鼻间充质条纹中。RA不改变纤维连接蛋白、IV型胶原或L1上的生长,嗅觉轴突在嗅觉上皮和大脑之间的不同区域遇到这些生长。RA介导的转录激活和轴突分离的模式在出生后早期的小鼠中持续存在,并且RA信号可以在背外侧oe. Thus的成年ORN的子集中被识别,RA介导的基因表达在嗅觉通路的早期发育期间区分了oe. Thus的不同区域中的ORN的亚群,并且可能在整个生命中影响该区域中的ORN的分化和轴突投射。神经学比较杂志394:445-461,1998.© 1998 Wiley利斯公司
We asked whether retinoic acid (RA) influences olfactory receptor neurons (ORNs) in the developing and mature mouse olfactory epithelium (oe). The distribution of retinoid receptors and binding proteins in the oe changes between embryonic days 11.5 and 13.5, the period when ORNs first differentiate and send axons into the nascent olfactory nerve. Coincident with this change, RA, which is produced in the frontonasal mesenchyme at these ages, begins to activate gene expression in a bilaterally symmetric subset of ORNs in the dorsolateral oe, as judged by the expression of an RA‐responsive transgene. Axons from these RA‐activated ORNs are segregated in the olfactory nerve as it extends through the frontonasal mesenchyme toward the forebrain. In vitro, RA potentiates ORN neurite growth on laminin, which, in the embryo, is found in a stripe of frontonasal mesenchyme directly associated with the olfactory nerve. RA does not modify growth on fibronectin, type IV collagen, or L1, which olfactory axons encounter in different regions of the territory between the olfactory epithelium and the brain. The pattern of RA‐mediated transcriptional activation and axon segregation persists in early postnatal mice, and RA signaling can be recognized in a subset of adult ORNs in the dorsolateral oe. Thus, RA‐mediated gene expression distinguishes a subpopulation of ORNs in a distinct region of the oe during the early development of the olfactory pathway, and may influence differentiation and axonal projections of ORNs in this region throughout life. J. Comp. Neurol. 394:445–461, 1998. © 1998 Wiley‐Liss, Inc.
DOI: 10.1073/pnas.89.8.3347
发表时间: 1992-04-15
影响因子: 11.1
作者:
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通讯作者: LINNEY, E
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期刊: The EMBO Journal
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发表时间: 1988
期刊: Development (Cambridge, England)
影响因子: --
作者:
Sulik,KK;Cook,CS;Webster,WS
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发表时间: 1993-07-15
影响因子: 11.1
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发表时间: 1995-03-01
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影响因子: 16.2
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