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公司名称: Sigma-Aldrich
产品编号: 3610
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Generation of Mouse Primary Hypothalamic Neuronal Cultures for Circadian Bioluminescence Assays
Author:
Date:
2021-03-05
[Abstract]  

An endogenous circadian clock system enables organisms to adapt to time-of-day dependent environmental changes. In consequence, most physiological processes exhibit daily rhythms of, e.g., energy metabolism, immune function, sleep, or hormone production. Hypothalamic circadian clocks have been identified to play a particular role in coordinating many of these processes. Primary neuronal cultures are widely used as a physiologically relevant model to study molecular events within neurons. However, as circadian rhythms include dynamic molecular changes over longer timescales that vary between

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[摘要]  [摘要]内源性生物钟系统使生物能够适应与时间相关的环境变化。结果,大多数生理过程表现出例如能量代谢,免疫功能,睡眠或激素产生的每日节律。下丘脑生物钟已被确认在协调许多这些过程中起特定作用。 原代神经元文化被广泛用作研究神经元内分子事件的生理相关模型。然而,由于昼夜节律包括较长时间范围内的动态分子变化,而这种变化在各个细胞之间会有所不同,因此纵向测量方法对于研究下丘脑神经元昼夜节律的调节至关重要。在这里,我们提供了用于生成表达昼夜节律性荧光素酶报道基因的下丘脑神经元文化的协议。通过执行生物发光测量,此类报告细胞可用于以高时间分辨率纵向监测细胞昼夜节律。


[背景]为了适应重复在其环境中的时间-日期依赖性变化,许多生物已开发出一种内源性生物钟系统调节行为和生理过程的24小时的节律(夏尔马,2003)。在哺乳动物中,一个昼夜节律性起搏器主要位于下丘脑上视交叉上核(SCN)。它与外部时间协调整个身体的细胞时钟调节。睡眠,食欲和新陈代谢的每日模式由下丘脑神经元中的细胞昼夜节律调节(Cedernaes等,2019)。

在哺乳动物细胞中,昼夜节律时钟由互锁的转录-翻译反馈环(TTFL)组成。在核心TTFL中,转录因子昼夜运动输出周期kaput(CLOCK)和脑和肌肉芳基碳氢化合物受体核转运蛋白样蛋白1(BMAL1或ARNTL)激活其自身阻遏物,周期(PER1-3)和隐色蛋白的表达(CRY1 ...

Organotypic Brain Cultures: A Framework for Studying CNS Infection by Neurotropic Viruses and Screening Antiviral Drugs
Author:
Date:
2017-11-20
[Abstract]  According to the World Health Organization (WHO), at least 50% of emerging viruses endowed with pathogenicity in humans can infect the Central Nervous System (CNS) with induction of encephalitis and other neurologic diseases (Taylor et al., 2001; Olival and Daszak, 2005). While neurological diseases are progressively documented, the underlying cellular and molecular mechanisms involved in virus infection and dissemination within the CNS are still poorly understood (Swanson and McGavern, 2015; Ludlow et al., 2016). For example, measles virus (MeV) can infect neural cells, and ... [摘要]  根据世界卫生组织(WHO)的统计,至少有50%的新发病毒具有致病性,可感染中枢神经系统(CNS),并诱发脑炎和其他神经系统疾病(Taylor et al。 >,2001; Olival和Daszak,2005)。虽然神经系统疾病逐渐被记录下来,但涉及病毒感染和在CNS内传播的潜在细胞和分子机制仍然知之甚少(Swanson and McGavern,2015; Ludlow等人,2016)。例如,麻疹病毒(MeV)可以感染神经细胞,并在原发感染后几个月至数年导致持续的脑感染,导致致死性脑炎,而没有可用的治疗(Reuter和Schneider-Schaulies,2010; Laksono等人。,2016)。器官型脑文化(OBC)是病毒学领域的一个合适的模型,以更好地理解中枢神经系统感染。实际上,它不仅可以研究中枢神经系统内嗜神经病毒的感染和传播,而且还可以作为创新性抗病毒策略或分子的筛选模型,如我们最近发表的有关融合抑制肽和HSP90伴侣蛋白活性抑制剂的研究, 17-DMAG(Welsch等人,2013; ...

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