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Forceps (2)

Company: Fine Science Tools
Catalog#: 11253-20
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Confocal Microscopy of Reovirus Transport in Living Dorsal Root Ganglion Neurons
Author:
Date:
2020-11-20
[Abstract]  

Neurotropic reoviruses repurpose host machinery to traffic over long distances in neuronal processes and access distal replication sites. Understanding mechanisms of neuronal transmission is facilitated by using simplified in vitro primary neuronal culture models. Advances in the design of compartmentalized microfluidic devices lend robustness to neuronal culture models by enabling compartmentalization and manipulation of distinct neuronal processes. Here, we describe a streamlined methodology to culture sensory neurons dissociated from dorsal root ganglia of embryonic rats in microfluidic devices. We further describe protocols to exogenously label reovirus and image, track, and analyze transport of single reovirus particles in living neurons. These techniques can be adapted to study

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[摘要]  [摘要] 嗜神经性呼肠孤病毒重新利用宿主机器在神经元过程中进行长距离的传输,并进入远端复制部位。简化的体外原代神经元培养模型有助于理解神经元传递机制。室化微流控装置设计的进展使得不同的神经元过程能够被划分和操作,从而为神经元培养模型提供了稳健性。在这里,我们描述了一种在微流控装置中培养胚胎大鼠背根神经节分离的感觉神经元的方法。我们进一步描述了外源性标记呼肠孤病毒的方法,并对单个呼肠孤病毒粒子在活神经元中的转运进行了成像、跟踪和分析。这些技术可应用于研究其他嗜神经病毒的轴突定向转运以及参与信号传导和病理学的神经因子。



[背景]来自不同家族的病毒,包括黄病毒科、疱疹病毒科、小角RNA病毒科和弹状病毒科,突破神经系统的保护屏障,造成严重的疾病和经济负担(Koyuncu等人,2013年;Bohmwald等人,2018年;Tyler,2018年)。哺乳动物正呼肠孤病毒(reovirus,reovirus)属于呼肠孤病毒科,在多种年轻哺乳动物中引起血清型依赖性神经元感染,可导致致命性脑炎(Tyler等人,1986年;Dermody等人,2013年)。呼肠孤病毒没有被两个同心蛋白壳包裹的片段dsRNA基因组包裹,是研究神经系统病毒感染的一种灵活工具(Dermody等人,2013年)。虽然呼肠孤病毒感染的细胞和分子机制已被广泛地利用转化细胞系进行研究,但这些系统并不能捕捉到极化神经元细胞的复杂性。感染神经元的病毒必须在轴突中长距离传播,才能到达复制和释放的远端。为了了解呼肠孤病毒进入神经元和长距离运输的机制,我们最近采用了一些技术来培养原代神经元,并对活细胞中荧光标记的呼肠孤病毒成像(Aravamudhan等人,2020年)。 ...

Spared Nerve Injury Model of Neuropathic Pain in Mice
Author:
Date:
2018-03-20
[Abstract]  Experimental models of peripheral nerve injury have been developed to study mechanisms of neuropathic pain in living animals. The spared nerve injury (SNI) model in rodents is a partial denervation model, in which the common peroneal and tibial nerves are injured, producing consistent and reproducible tactile hypersensitivity in the skin territory of the spared, intact sural nerve. SNI-operated mice require less force applied to the affected limb to elicit a withdrawal behavior as compared to sham mice. This effect is observed as early as 2 days after surgery and lasts for at least 1 month. We describe detailed surgical procedures to establish the SNI mouse model that has been widely used for investigating mechanisms of neuropathic pain. [摘要]  等人,1990; Kim和Chung,1992 )。部分去神经支配模型使研究人员能够研究不同组的神经元细胞和非神经元细胞的结构和功能变化。研究可以在神经性疼痛的起始,进展(也称为急性)和维持(慢性)阶段以及在沿着疼痛途径的不同解剖部位期间进行,包括远侧与近侧周围神经纤维,背根神经节,脊髓绳索,皮质下和皮层区域。备用神经损伤(SNI)模型包括部分神经损伤,其中腓总神经和胫神经受损,在腓肠神经部位产生一致且可再现的疼痛超敏反应(Decosterd和Woolf,2000; Shields等人, ,2003)。该模型已被证明是有力的,证明了机械敏感性和热响应性的行为测量值的实质和长期变化(Bourquin等人,2006)。这些特征与临床描述的神经性疼痛疾病的主要症状密切相似。

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